Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 229
Filtrar
1.
Clin. transl. oncol. (Print) ; 26(2): 338-351, feb. 2024.
Artigo em Inglês | IBECS | ID: ibc-230180

RESUMO

Gastric cancer is the fifth most common malignancy worldwide having the fourth highest mortality rate. Energy metabolism is key and closely linked to tumour development. Most important in the reprogramming of cancer metabolism is the Warburg effect, which suggests that tumour cells will utilise glycolysis even with normal oxygen levels. Various molecules exert their effects by acting on enzymes in the glycolytic pathway, integral to glycolysis. Second, mitochondrial abnormalities in the reprogramming of energy metabolism, with consequences for glutamine metabolism, the tricarboxylic acid cycle and oxidative phosphorylation, abnormal fatty acid oxidation and plasma lipoprotein metabolism are important components of tumour metabolism. Third, inflammation-induced oxidative stress is a danger signal for cancer. Fourth, patterns of signalling pathways involve all aspects of metabolic transduction, and many clinical drugs exert their anticancer effects through energy metabolic signalling. This review summarises research on energy metabolism genes, enzymes and proteins and transduction pathways associated with gastric cancer, and discusses the mechanisms affecting their effects on postoperative treatment resistance and prognoses of gastric cancer. We believe that an in-depth understanding of energy metabolism reprogramming will aid the diagnosis and subsequent treatment of gastric cancer (AU)


Assuntos
Neoplasias/patologia , Neoplasias Gástricas/tratamento farmacológico , Ciclo do Ácido Cítrico , Metabolismo Energético/fisiologia , Glicólise/genética , Fosforilação Oxidativa
2.
Nutr. hosp ; 41(1): 230-243, Ene-Feb, 2024. tab
Artigo em Espanhol | IBECS | ID: ibc-230903

RESUMO

Introducción: los esquemas de ayuno intermitente (AI) proponen limitar la ingestión de alimentos durante periodos específicos. Se han propuestocomo estrategia dietoterapéutica para tratar distintas condiciones metabólicas en diversos padecimientos, sin embargo, la heterogeneidad entrecada contexto de ayuno intermitente pudiera generar diferentes resultados en parámetros metabólicos.Objetivo: evaluar la aplicación clínica del ayuno intermitente y discernir si ofrece ventajas sobre otras estrategias tradicionales.Métodos: se formularon preguntas estructuradas (PICO) y la metodología se apegó a las guías establecidas por la declaración PRISMA 2020.Se realizó una búsqueda de literatura científica en las plataformas de PubMed, Cochrane Library y Google Scholar.Resultados: se encontraron 3.962 artículos, de los cuales se incluyeron finalmente 56, eliminando 3.906 trabajos que no contestaban directao indirectamente las preguntas estructuradas.Conclusiones: frente a las dietas convencionales, los diversos esquemas de AI no generan ventajas ni desventajas en cuanto a pérdida de pesoo perfil lipídico, aunque en la variante a días alternos se producen mayores reducciones de insulina a las observadas en la restricción energéticacontinua. La heterogeneidad de las intervenciones y poblaciones estudiadas, así como los comparadores, los desenlaces y el tipo de diseñoimposibilitan extrapolar los efectos a todos los escenarios clínicos y generalizar las recomendaciones.(AU)


Introduction: intermittent fasting plans propose to limit food intake during specific periods as nutritional therapeutic strategies to treat differentmetabolic conditions in various clinical entities. However, the heterogeneity between each context of intermittent fasting could generate differentresults in metabolic parameters.Objective: to evaluate the clinical application of intermittent fasting and to discern whether it offers advantages over other traditional strategies.Methods: structured questions were formulated (PICO), and the methodology followed the guidelines established by the PRISMA 2020 statement.The search was conducted in different databases (PubMed, Cochrane Library and Google Scholar).Results: we found 3,962 articles, of which 56 were finally included; 3,906 articles that did not directly or indirectly answer the structuredquestions were excluded.Conclusions: compared to conventional diets, the various AI schemes do not generate advantages or disadvantages in terms of weight loss andlipid profile, although in the alternate-day variant there are greater insulin reductions than those observed in the continuous energy restriction. Theheterogeneity of the interventions, the populations studied, the comparators, the results, and the type of design make it impossible to extrapolatethe effects found in all clinical scenarios and generalize the recommendations.(AU)


Assuntos
Humanos , Masculino , Feminino , Jejum/efeitos adversos , Metabolismo Energético , Dieta com Restrição de Carboidratos , Dietoterapia
3.
Nutr. hosp ; 40(6): 1199-1206, nov.-dic. 2023. ilus, tab, graf
Artigo em Inglês | IBECS | ID: ibc-228507

RESUMO

Introduction: energy metabolism in cancer patients is influenced by different factors. However, the effect of antineoplastic treatment is not clear, especially in women. Objective: to evaluate resting energy expenditure (REE) by indirect calorimetry (IC) before (T0) and after (T1) first cycle period of antineoplastic therapy: radiotherapy (RT), chemotherapy (CT), and concomitant chemoradiation therapy (CRT), quality of life (QoL) and accuracy of REE were compared with international guidelines recommendations per kilogram (European Society for Clinical Nutrition and Metabolism [ESPEN]). Methods: an observational, longitudinal study was conducted in women with gynecological cancer diagnosis undergoing antineoplastic treatment: RT, CT and CRT. Weight loss, actual body weight and height were measured. REE was evaluated in T0-T1 and compared with ESPEN recommendations. Kruskal-Wallis test and Bland-Alman analysis were used to determine the agreement (± 10 % of energy predicted) of REE adjusted by physical activity (TEE) compared with ESPEN recommendations, respectively. Results: fifty-four women with cancer were included: 31.5 % (n = 17) for RT group, 31.5 % (n = 17) for CT group and 37 % (n = 20) for CRT group. REE showed statistical differences between T0 and T1 in the total population (p = 0.018), but these were not associated with anticancer therapy groups (p > 0.05). QoL had no significant changes after treatment (p > 0.05). Accuracy of 25 and 30 kcal/kg compared to TEE was less than 30 %. Conclusion: REE in women with gynecological cancer decreased after antineoplastic treatments but this is not associated with a particular antineoplastic therapy. It is needed to develop research to determine the accuracy of ESPEN recommendations with TEE estimated by IC and clinical factors in women with cancer. (AU)


Antecedentes: el metabolismo energético en pacientes con cáncer está influenciado por diferentes factores. Sin embargo, el efecto sobre el tratamiento antineoplásico no es claro, especialmente en mujeres. Objetivo: evaluar el gasto energético en reposo (GER) mediante calorimetría indirecta (CI) antes (T0) y después (T1) del primer ciclo del tratamiento antineoplásico: radioterapia (RT), quimioterapia (QT) y quimio-radioterapia concomitante (QRT), calidad de vida (CdV) y precisión del GER con las con las recomendaciones internacionales por kilogramo de peso (European Society for Clinical Nutrition and Metabolism [ESPEN]). Métodos: se realizó un estudio longitudinal, observacional en mujeres con diagnóstico de cáncer ginecológico en tratamiento antineoplásico. Se evaluó el GER en T0 y T1. Se midieron la pérdida de peso, el peso corporal y la talla. Se usaron las pruebas de Kruskal-Wallis y el análisis Bland-Altman para determinar la concordancia (± 10 % de GER) del REE ajustado por actividad física (TEE) en comparación con las recomendaciones de ESPEN. Resultados: se incluyeron 54 mujeres con cáncer; 31,5 % (n = 17) en el grupo RT, 31,5 % (n = 17) en el de QT y 37 % (n = 20) en el de QRT. GER mostró diferencias estadísticas entre T0 y T1 en la población total (p = 0,018); no se asoció con la terapia contra el cáncer (p > 0,05). La calidad de vida no tuvo cambios significativos después del tratamiento (p > 0,05). La precisión de 25 y 30 kcal/kg en comparación con TEE fue inferior al 30 %. Conclusión: el GER en mujeres con cáncer ginecológico disminuyó después del tratamiento antineoplásico, pero no se asoció a una terapia antineoplásica en particular. Es fundamental desarrollar más investigaciones que compare las recomendaciones de ESPEN y con los valores de la CI comparando más factores clínicos para ofrecer una intervención nutricional precisa (AU)


Assuntos
Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Metabolismo Energético , Antineoplásicos , Estudos de Coortes , Estudos Prospectivos , Neoplasias dos Genitais Femininos/tratamento farmacológico , Neoplasias dos Genitais Femininos/radioterapia , Qualidade de Vida
4.
J. physiol. biochem ; 79(3): 529-541, ago. 2023.
Artigo em Inglês | IBECS | ID: ibc-223746

RESUMO

Acacetin (ACA), a flavone isolated from Chinese traditional medical herbs, has numerous pharmacological activities. However, little is known about the roles in white fat browning and energy metabolism. In the present study, we investigated whether and how ACA would improve energy metabolism in vivo and in vitro. ACA (20 mg/kg) was intraperitoneally injected to the mice with obesity induced by HFD for 14 consecutive days (in vivo); differentiated 3T3-L1 adipocytes were treated with ACA (20 µmol/L and 40 µmol/L) for 24 h (in vitro). The metabolic profile, lipid accumulation, fat-browning and mitochondrial contents, and so on were respectively detected. The results in vivo showed that ACA significantly reduced the body weight and visceral adipose tissue weight, alleviated the energy metabolism disorder, and enhanced the browning-related protein expressions in adipose tissue of rats. Besides, the data in vitro revealed that ACA significantly reduced the lipid accumulation, induced the expressions of the browning-related proteins and cAMP-dependent protein kinase A (PKA), and increased the mitochondrium contents, especially enhanced the energy metabolism of adipocytes; however, treatment with beta-adrenergic receptor blocker (propranolol, Pro) or adenyl cyclase (AC) inhibitor (SQ22536, SQ) abrogated the ACA-mediated effects. The data demonstrate that ACA alleviates the energy metabolism disorder through the pro-browning effects mediated by the AC-cAMP pathway. The findings would provide the experimental foundation for ACA to prevent and treat obesity and related metabolism disorders. (AU)


Assuntos
Animais , Camundongos , Ratos , Flavonas/metabolismo , Flavonas/farmacologia , Flavonas/uso terapêutico , Doenças Metabólicas/metabolismo , Células 3T3-L1 , Adipócitos Brancos/metabolismo , Tecido Adiposo Marrom/metabolismo , Tecido Adiposo Branco/metabolismo , Dieta Hiperlipídica/efeitos adversos , Metabolismo Energético , Lipídeos/uso terapêutico , Obesidade/metabolismo
5.
J. physiol. biochem ; 79(2): 441-450, may. 2023.
Artigo em Inglês | IBECS | ID: ibc-222554

RESUMO

Alterations in adipose tissue (AT) metabolism related to inflammation and adipokine’s production lead to perturbations in its capacity to store lipids and release fatty acids (FA) during feeding/fasting transition or during exercise. Exercise has a beneficial effect on AT metabolism, but conventional trainings are not always suitable for patients with functional limitations. Dynamic eccentric (ECC) exercise prevents the accumulation of AT and may then overcome those limitations. Consequently, this study aimed at investigating AT’s adaptations after ECC training. Nine-week-old male rats were randomly assigned to a control sedentary or three-trained groups for which treadmill slopes modulated exercise oxygen consumption (VO2) and mechanical work (n = 15 per group): (1) + 15% uphill-concentric group (CONC), (2) − 15% downhill group (ECC15, same mechanical work as CONC) and (3) − 30% downhill group (ECC30, same VO2, or oxygen cost as CONC). Body composition and energy expenditure (EE) were measured before and after 8 weeks of training. Subcutaneous AT was collected to study total FA profile and gene expression. Higher total EE was driven by lean mass gain in trained animals. In AT, there was a decrease in arachidonic acid with CONC or ECC15 training. Increased adiponectin, leptin, lipases, Glut4 and Igf1 mRNA levels in ECC15 group suggested major metabolic adaption in AT. In conclusion, ECC could induce beneficial modifications in AT fatty acid profile and the expression of key genes related to metabolism and insulin sensitivity. (AU)


Assuntos
Animais , Ratos , Tecido Adiposo/metabolismo , Condicionamento Físico Animal , Biologia , Metabolismo Energético , Músculo Esquelético/metabolismo , Consumo de Oxigênio
6.
Rev. andal. med. deporte ; 15(3): 107-113, Sep. 2022. ilus, graf, tab
Artigo em Inglês | IBECS | ID: ibc-209912

RESUMO

Objective: Anaerobic work capacity (AWC) is understood as the maximum power that the athlete can withstand over time, conditioned by high intensityeffort and it is important to interpret it for the performance improvement. In addition, the muscle oxygen saturation (SmO2) provides information onmuscle metabolism and hemodynamics. Likewise, critical oxygenation (CO) is the highest metabolic rate that results in a fully oxidative energy supplythat reaches a stable state at the substrate level. The main problem is that SmO2 generally offers a traditional laboratory interpretation withoutapplication in field tests, Therefore, the purpose of this study is to provide the use of CO as an indicator of AWC performance in high intensity exercise. Methods: Twenty-two male rugby players participated. Peak torques during an isokinetic fatigue test and muscle oxygen consumption (mVO2) and SmO2in the vastus lateralis were measured. A correlation and multiple regression analysis were applied to find an explanatory prediction model of the AWC. Results: A greater SmO2 amplitude and CO would mean less anaerobic work (r = -0.58 and r=-0.63) and less force production. In addition, CO along withweight (kg) can explain the AWC by 64% during high intensity exercise. Conclusion: The measurement of critical oxygenation is associated with the AWC, so should be considered a performance factor. These parameters couldbe included in NIRS sensors to evaluate muscle metabolism.(AU)


Objetivo: La capacidad de trabajo anaeróbico (AWC) se entiende como la potencia máxima que el deportista puede soportar a lo largo del tiempo,condicionada por un esfuerzo de alta intensidad y es importante interpretarla para la mejora del rendimiento. Además, la saturación de oxígenomuscular (SmO2) proporciona información sobre el metabolismo muscular y la hemodinámica. Asimismo, la oxigenación crítica (OC) es la tasametabólica más alta que da como resultado un suministro de energía completamente oxidativo que alcanza un estado estable a nivel de sustrato. Elprincipal problema es que SmO2 generalmente ofrece una interpretación de laboratorio tradicional sin aplicación en pruebas de campo, por lo tanto, elpropósito de este estudio es proporcionar el uso de OC como indicador del rendimiento de AWC en ejercicio de alta intensidad. Métodos: Participaron 22 jugadores masculinos de rugby. Se midieron los picos máximos después de una prueba de fatiga isocinética y el consumo deoxígeno muscular (mVO2) y SmO2 en el musculo vasto lateral. Se aplicó un análisis de correlación y regresión múltiple para encontrar un modelo depredicción explicativo del AWC. Resultados: Una mayor amplitud de SmO2 y OC supondría un menor trabajo anaeróbico (r = -0,58 y r=-0,63) y una menor producción de fuerza. Además,el CO junto con el peso (kg) pueden explicar el AWC en un 64 % durante el ejercicio de alta intensidad. Conclusión: La medición de la oxigenación crítica está asociada a la AWC, por lo que debe considerarse un factor de rendimiento. Estos parámetrospodrían incluirse en sensores NIRS para valorar el metabolismo muscular.(AU)


Objetivo: A capacidade anaeróbica de trabalho (AWC) é entendida como a potência máxima que o atleta pode suportar ao longo do tempo, condicionadapor um esforço de alta intensidade, sendo importante interpretá-la para melhorar o desempenho. Além disso, a saturação muscular de oxigênio (SmO2)fornece informações sobre o metabolismo muscular e a hemodinâmica. Da mesma forma, a oxigenação crítica (OC) é a taxa metabólica mais alta queresulta em um suprimento de energia totalmente oxidativo atingindo um estado estável no nível do substrato. O principal problema é que o SmO2geralmente oferece uma interpretação laboratorial tradicional sem aplicação em testes de campo, portanto, o objetivo deste estudo é fornecer o uso doCO como indicador de desempenho de AWC em exercícios de alta intensidade. Métodos:Participaram 22 jogadores de rugby do sexo masculino. Foram medidos os picos máximos após um teste de fadiga isocinética e o consumo deoxigênio muscular (mVO2) e SmO2 no músculo vasto lateral. Uma análise de correlação e regressão múltipla foi aplicada para encontrar um modeloexplicativo de predição do AWC. Resultados: Uma maior amplitude de SmO2 e CO implicaria em menor trabalho anaeróbio (r = -0,58 er = -0,63) e menor produção de força. Além disso, oCO junto com o peso (kg) pode explicar a AWC em 64% durante o exercício de alta intensidade. Conclusão: A medida oxigenação crítica prevê AWC, portanto, deve ser considerada um fator de desempenho. Esses parâmetros podem ser incluídos emsensores NIRS para a medição do metabolismo muscular.(AU)


Assuntos
Humanos , Masculino , Adulto Jovem , Adulto , Anaerobiose , Limiar Anaeróbio , Oxigenação , Consumo de Oxigênio , Análise da Demanda Biológica de Oxigênio , Hemodinâmica , Músculo Esquelético , Metabolismo Energético , Fluxo Sanguíneo Regional , Medicina Esportiva , Desempenho Atlético , Desempenho Físico Funcional , 51654 , Teste de Esforço , Treinamento de Força , Exercício Físico , Futebol Americano , Fadiga
8.
Nutr. hosp ; 38(sup. 2)abr. 2021. ilus, tab
Artigo em Inglês | IBECS | ID: ibc-225117

RESUMO

The human body, particularly the brain, requires energy, stored in the form of adenosine triphosphate. Energy metabolism during cellular respiration is dependent on the presence of multiple micronutrients, which act as essential components, coenzymes, or precursors at every stage. An adequate supply of multiple micronutrients is vital for efficient energy production. However, micronutrient intakes below the recommended dietary allowance are common, even in industrialized countries. Intakes of vitamins A, D, E, folate, iron, zinc, and selenium are suboptimal across all age groups. Suboptimal micronutrient levels have been shown to contribute to low energy levels, physical and mental fatigue, and impaired cognitive performance and wellbeing – symptoms frequently present in the general population. When supplemented in combination in well-conducted trials, multiple micronutrients ± coenzyme Q10 reduced oxidative stress in chronic fatigue syndrome; in healthy people they increased cerebral blood-flow hemodynamic response, energy expenditure, and fat oxidation; reduced mental and physical fatigue; improved the speed and accuracy of cognitive function during demanding tasks; and reduced stress. The results from these clinical trials suggest that even in industrialized countries, where adults might be assumed to have a healthy, balanced diet, there is a rationale to supplement with multiple micronutrients, including coenzyme Q10, to improve nutritional status, support energy metabolism, and improve subjective wellbeing. (AU)


El cuerpo humano, particularmente el cerebro, requiere energía, almacenada en forma de adenosina trifosfato. El metabolismo de la energía durante la respiración celular depende de la presencia de múltiples micronutrientes, que actúan como componentes esenciales, coenzimas o precursores en cada etapa. Un aporte adecuado de múltiples micronutrientes es vital para una producción eficiente de energía. Sin embargo, la ingesta de micronutrientes inferior a la recomendada es frecuente, incluso en los países industrializados. Las ingestas de vitaminas A, D, E, folato, hierro, zinc y selenio son subóptimas en todos los grupos de edad. Se ha demostrado que las situaciones subóptimas en relación con diversos micronutrientes contribuyen a tener niveles bajos de energía, fatiga física y mental, y deterioro del rendimiento cognitivo y el bienestar, síntomas presentes a menudo en la población general. Sin embargo, cuando se suplementa en ensayos bien controlados, con una combinación de diversos micronutrientes ± coenzima Q10, se constata una reducción del estrés oxidativo en el síndrome de fatiga crónica y, en las personas sanas, se observa un aumento de la respuesta hemodinámica del flujo sanguíneo cerebral, el gasto energético y la oxidación de la grasa; una reducción de la fatiga mental y física; una mejora de la velocidad y la precisión de la función cognitiva durante la realización de tareas exigentes, y una reducción del estrés. Los resultados de estos ensayos clínicos sugieren que, incluso en los países industrializados, donde se podría suponer que los adultos tienen una dieta saludable y equilibrada, hay motivos para complementarla con múltiples micronutrientes, incluida la coenzima Q10, con el fin de mejorar el estado nutricional, respaldar el metabolismo energético y mejorar el bienestar subjetivo. (AU)


Assuntos
Humanos , Suplementos Nutricionais , Estado Nutricional , Micronutrientes , Fadiga , Metabolismo Energético
9.
Enferm. glob ; 20(61): 464-475, ene. 2021. ilus, tab
Artigo em Espanhol | IBECS | ID: ibc-201470

RESUMO

OBJETIVOS: El objetivo es describir los métodos de calentamiento y su aplicación para el mantenimiento de la temperatura corporal en el paciente gran quemado. METODOLOGÍA: Revisión bibliográfica realizada entre septiembre de 2019 y febrero de 2020 acerca de la termorregulación y calentamiento del paciente quemado en las bases de datos CINAHL, CUIDEN, PUBMED, MEDES y WOS en español e inglés, de los últimos 10 años, de los cuales fueron analizados 24 documentos. RESULTADOS: La respuesta hipermetabólica y la reprogramación hipotalámica provocan un aumento de la temperatura basal en los pacientes quemados, entre 37 y 38,5ºC sin origen infeccioso. Para disminuir el gasto energético en reposo y la repuesta hipermetabólica se puede aplicar una temperatura ambiental elevada, como calentamiento externo pasivo, entre 28 y 32ºC. DISCUSIÓN: Existen otros métodos de calentamiento externo activo que pueden conseguir el mismo objetivo como las mantas de aire convectivo, placas térmicas o sistemas de superficie. CONCLUSIÓN: Debe revisarse la recomendación de calentamiento mediante temperatura ambiental elevada, que crea ambientes hostiles para los trabajadores y los pacientes, a través del estudio de la inclusión de métodos de calentamiento externo activo


OBJECTIVES: To describe the heating methods and their application to maintain body temperature in majors burn patients. METHODOLOGY: Bibliographic review carried out between September 2019 and February 2020 about the thermoregulation and heating of the burn patient in the CINHAL, CUIDEN, PUBMED, MEDES and WOS databases in Spanish and English, documents from the last 10 years, from which 26 were analyzed. RESULTS: Hypermetabolic response and hypothalamic reprogramming cause an increase in basal temperature in burn patients between 37 and 38.5ºC without infectious origin. To decrease the energy expenditure at rest and the hypermetabolic response, it is possible to act through a high ambient temperature between 28 and 32ºC as passive external heating. DISCUSSION: Other external heating methods can achieve this goal such as convective air blankets, heating plates, or surface systems. CONCLUSIONS: The recommendation of warming by means of high ambient temperature, which creates hostile environments for workers and patients, should be reviewed through the study of the inclusion of active external warming methods


Assuntos
Humanos , Queimaduras/terapia , Temperatura Corporal/fisiologia , Regulação da Temperatura Corporal/fisiologia , Metabolismo Energético/fisiologia , Queimaduras/enfermagem , Hipertermia Induzida/enfermagem
10.
Nutr. clín. diet. hosp ; 41(3): 89-96, 2021. tab, graf
Artigo em Inglês | IBECS | ID: ibc-225822

RESUMO

Our aim was to develop and validate an equation to predict total energy expenditure (TEE) based on anthropometric measurements and physical activity questionnaires that can be applied among non-institutionalized Mexican adults. To meet this aim, a validation study was conducted with a sample of Mexican adults (n=115, 37% men) that were randomly divided into two groups to develop and validate new equations to estimate TEE. TEE was measured by indirect calorimetry and heart rate monitoring for at least three days. These measurements were considered as the reference method. The predictors of TEE were age, sex, fat and fatfreemass, body weight and physical activity level (PAL), which was assessed with two questions. The accuracy of factorial methods (e.g. FAO/WHO or Ainsworth’s metabolic equivalents list) and empirical equations to estimate TEE was compared. Multiple linear regression and Intra-class correlation coefficients were estimate as agreement measurement. The equation developed is as follows: TEE (kcal / d) = 1331.712 - (686.344 x sex, men: 1, women: 2) + (18,051 x body weight, kg) - (16.020 x age, years) + (894.007 x PAL). The accuracy of the equation was modest in the development (R2 = 54.4, standard error = 511.3) and validation (R2 = 59.2, standard error = 372.8) samples. However, this equation had higher accuracy than factorial methods or empirical equations. The equation was developed to estimate the TEE of Mexican adults, which can be used as a general guide to provide nutritional counselling. (AU)


Assuntos
Humanos , Masculino , Feminino , Adulto Jovem , Adulto , Metabolismo Energético , Antropometria , Atividade Motora , México , Inquéritos e Questionários , Calorimetria Indireta
11.
Nutr. clín. diet. hosp ; 41(1): 38-46, 2021. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-202470

RESUMO

Pese a que el fútbol es el deporte más popular del planeta, la nutrición del futbolista está ciertamente descuidada. La actividad física exige una utilización mixta de los sistemas fisiológicos de obtención de energía, aeróbico y anaeróbico, requiriéndose una completa ingesta de nutrientes; siendo de sobra conocido el papel de los carbohidratos en el rendimiento deportivo. OBJETIVOS: El objetivo de este estudio es determinar la ingesta nutricional de macronutrientes en un equipo de fútbol profesional. MATERIAL Y MÉTODOS: Realizamos un estudio epidemiológico, descriptivo y prospectivo de la primera plantilla de un equipo de la Segunda División B española. Se trata de 22 jugadores masculinos, con edad media de 26,19 (19,5-31,6). Elaboramos un protocolo de recogida de alimentos ingeridos durante 7 días, contabilizando la ingesta de macronutrientes y cuantificándose el gasto energético total, variable en función del día de entrenamiento y posición del jugador. RESULTADOS: El total de carbohidratos globales consumidos fue de 305,07 +/- 56 gr (48,78% de las calorías). Estos valores varían entre el día de actividad moderada: 213,6 +/- 37 gr (39,93%) y el día de actividad intensa: 361,84 +/- 28 gr (49,21%). Existen diferencias significativas en el total de carbohidratos según la actividad diaria. Además, encontramos diferencias significativas en la altura del jugador, su tasa metabólica basal y gasto energético total, entre las posiciones de portero y jugador de banda avanzado (p < 0,05). DISCUSIÓN Y CONCLUSIONES: Tanto el aporte de carbohidratos como la cantidad global de calorías consumidas por el futbolista se encuentran por debajo del estándar recomendado (3600 kcal/día)


Despite soccer is the most popular sport on the planet, soccer player nutrition is certainly neglected. Physical activity requires a mixed use of the physiological systems for obtaining energy, requiring a complete intake of nutrients; and the role of carbohydrates in sports performance is well known. OBJECTIVES: The objective of this study is to determine the nutritional intake of macronutrients in a professional soccer team. MATERIAL AND METHODS: We carried out an epidemiological, descriptive and prospective study of a Spanish Second Division B team. They were 22 male players, with a mean age of 26.19 (19.5-31.6). We elaborated a protocol for collecting food eaten for 7 days, counting the macronutrient intake and quantifying the total energy expenditure, which varies depending on the training day and the player's position. RESULTS: The global carbohydrates consumed was 305.07+/- 56 gr (48.78% of calories). These values vary between the moderate activity day: 213.6 +/- 37 grams (39.93%) and the intense activity day: 361.84 +/- 28 grams (49.21%). We found significant differences in total carbohydrates based on daily activity. In addition, we found significant differences in the player height, their basal metabolic rate and total energy expenditure, between the positions of goal keeper and advanced band player (p <0.05). DISCUSSION AND CONCLUSIONS: Both carbohydrate intake and the overall amount of calories consumed by the footballer are below the recommended standard (3600 kcal / day)


Assuntos
Humanos , Masculino , Adulto Jovem , Adulto , Estado Nutricional/fisiologia , Comportamento Alimentar/fisiologia , Futebol , Nutrientes/administração & dosagem , Carboidratos da Dieta/administração & dosagem , Atividade Motora , Estudos Prospectivos , Metabolismo Energético/fisiologia , Análise de Variância
12.
Nutr. hosp ; 37(5): 1052-1060, sept.-oct. 2020. tab, graf
Artigo em Inglês | IBECS | ID: ibc-198022

RESUMO

INTRODUCTION: the restriction of nocturnal sleep has immediate effects, including the presence of excessive daytime sleepiness, general fatigue, or impaired concentration. In the long term, it increases the risk of death from cardiac, respiratory, and metabolic disorders, and the prevalence of obesity in healthy populations. However, despite the existence of a large number of studies on this topic, results have been controversial. OBJECTIVE: to discuss and analyze the evidence on the effects of nocturnal sleep restriction versus habitual sleep on dietary energy intake, including specific meals, as well as the relationship between ghrelin and leptin levels in a healthy population. METHODS: a systematic search of the literature was conducted in October 2016 and February 2019 using the PubMed, Scopus, Lilacs, and Embase databases. Terms used were "sleep," "feeding behavior," "dietary energy intake," "energy intake," "meal," "ghrelin," and "leptin." RESULTS: the bibliographic search identified 384 potential articles. Of a total of eight articles accepted in the review, six contain information available for the analysis of total energy intake. The overall result shows a significant difference in energy intake between study groups (149.86 (95 % CI: 10.09-289.63); p = 0.04), and a higher intake of all macronutrients. CONCLUSIONS: the present systematic review and meta-analysis demonstrated that partial sleep deprivation increases total energy intake, as well as all macronutrients, when compared to habitual sleep


INTRODUCCIÓN: la restricción del sueño nocturno tiene efectos inmediatos, como la presencia de somnolencia diurna excesiva, fatiga general o alteraciones en la concentración; a largo plazo, aumenta el riesgo de muerte por trastornos cardíacos, respiratorios y metabólicos, y aumenta la prevalencia de la obesidad en las poblaciones sanas. Sin embargo, a pesar de la existencia de una gran cantidad de estudios, los resultados siguen siendo controvertidos. OBJETIVO: discutir y analizar la evidencia sobre la restricción parcial del sueño frente al sueño habitual y su efecto en la ingesta dietética de energía, incluyendo comidas específicas, así como en las concentraciones de ghrelina y leptina en una población sana. MÉTODOS: se realizó una búsqueda electrónica de la literatura entre octubre de 2016 y febrero de 2019 en PubMed, Scopus, Lilacs y Embase. Los términos utilizados fueron "sleep", "feeding behavior", "dietary energy intake", "energy intake", "meal", "ghrelin" y "leptin". RESULTADOS: la búsqueda bibliográfica identificó 384 artículos potenciales. De un total de 8 artículos aceptados en la revisión, 6 tenían información disponible para el análisis de la ingesta total de energía. El resultado general mostró una diferencia significativa en la ingesta de energía (149,86 (IC 95 %: 10,09-289,63); p = 0,04) y una mayor ingesta de todos los macronutrientes. CONCLUSIONES: la presente revisión sistemática y meta-análisis indicó que la restricción del sueño aumenta la ingesta total de energía, así como la de todos los macronutrientes, en comparación con el sueño habitual


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Metabolismo Energético , Privação do Sono/fisiopatologia , Ingestão de Energia , Privação do Sono/metabolismo , Sono/fisiologia , Grelina/uso terapêutico , Leptina/uso terapêutico , Nutrientes/uso terapêutico
13.
Rev. andal. med. deporte ; 13(3): 122-126, sept. 2020. tab, graf
Artigo em Inglês | IBECS | ID: ibc-199822

RESUMO

OBJECTIVE: To estimate total energy expenditure and intensity of a low impact BodyattackTM session using combined heart rate and movement sensing technology. METHOD: Participants were 10 (8 males) normal-weight adults (33 ± 3 years-old). Maximal oxygen capacity and heart rate were determined by the performance on a treadmill maximal exercise test using indirect calorimetric method. Heart rate and energy expenditure values were monitored during a Bodyattack™ routine using a combined heart rate and movement sensor. The manufacturer's combined activity and heart rate algorithm was used to estimate Total and Physical activity energy expenditure. RESULTS: A 60 min low impact BodyattackTM session demands a Total energy expenditure of 469.4 ± 170.8 kcal at an average intensity of 64% of maximal heart rate, from which approximately 27.2 min are spent at moderate to vigorous physical activity intensities. Compared to a high impact BodyattackTM session as reported by the trademark company, Total energy expenditure was lower in the low impact option (-194.8 Kcal, p = 0.006), but no significant differences were found in average intensity (-9.4%, p = 0.707). CONCLUSION: Bodyattack™ routines performed at a low impact option may be sufficient to meet minimal recommendations for developing and maintaining cardiorespiratory fitness, if practiced beyond three days.week-1. Although appropriate for untrained individuals and those with orthopedic limitations, energy requirements of low impact Bodyattack™ may not be enough to elicit an effective weight loss


OBJETIVO: Estimar el gasto total de energía y la intensidad de una rutina de BodyattackTM de bajo impacto. MÉTODOS: Los participantes fueron 10 adultos de peso normal (33 ± 3 años). La potencia máxima de oxígeno y la frecuencia cardíaca (FC) se determinaron por el rendimiento en una prueba de ejercicio máxima utilizando el método calorimétrico indirecto. Los valores de la frecuencia cardíaca y del gasto total de energía se monitorearon durante una rutina utilizando un sensor combinado de frecuencia cardíaca y movimiento. RESULTADOS: Una clase de BodyattackTM de bajo impacto de 60 minutos exige un gasto total de energía de 469.4 ± 170.8 kcal a una intensidad promedio del 64% de la frecuencia cardíaca máxima, de los cuales 27.2 minutos se gastan en actividad física de intensidad moderada a vigorosa. En comparación con una clase de alto impacto, el gasto total de energía fue menor en la opción de bajo impacto (-194.8 Kcal, p = 0.006), pero no se encontraron diferencias en la intensidad promedio (-9.4%, p = 0.707). CONCLUSIÓN: Las clases de Bodyattack™ de bajo impacto pueden cumplir con las recomendaciones mínimas para desarrollar y mantener la aptitud cardiorrespiratoria, si se practican más de tres días por semana. Sin embargo, los requisitos de energía de Bodyattack ™ de bajo impacto pueden no provocar una pérdida de peso efectiva


Assuntos
Humanos , Masculino , Feminino , Adulto , Exercício Físico/fisiologia , Terapia por Exercício/métodos , Monitorização Fisiológica/métodos , Acelerometria/métodos , Metabolismo Energético/fisiologia , Frequência Cardíaca/fisiologia , Dança/fisiologia
16.
Enferm. clín. (Ed. impr.) ; 30(supl.5): 144-146, jun. 2020. tab
Artigo em Inglês | IBECS | ID: ibc-196655

RESUMO

The objective of the research was to identify the effect of the simulation of Maena dance on housewives' knowledge of balanced nutrition in 3-5 year-old children at Hiliwaele I Village, Botomuzoi Sub-district, Nias Regency, in the year of 2018. The study employed a quasi-experimental method with one-group pretest-post-test design. The measurement and assessment of the research subjects were done before and after the simulation. The samples included 45 respondents selected through purposive sampling technique which fulfilled inclusion and exclusion criteria. The result of paired t-test obtained p-value=0.000 with the average score of knowledge before the dance simulation was 11.60, and after the simulation was 19.31 (post-test) indicating that score increase of knowledge post the simulation was 7.71. It is recommended that the health promoters in Botomuzoi Sub-district provide counseling about nutrition to women who have children with the age range 3-5 years old by using Maena dance simulation


No disponible


Assuntos
Humanos , Masculino , Feminino , Pré-Escolar , Dança , Conhecimentos, Atitudes e Prática em Saúde , Fenômenos Fisiológicos da Nutrição , Avaliação Nutricional , Metabolismo Energético , Cônjuges/educação , Comportamento Alimentar/fisiologia
17.
Cuad. psicol. deporte ; 20(2): 276-285, mayo 2020. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-198056

RESUMO

Por cuestiones culturales, para muchas mujeres en México la adopción de una conducta activa fue restringida a la ejecución de tareas en el hogar. Se propuso analizar las propiedades psicométricas de la Escala de Autoeficacia para el Ejercicio. Como objetivo secundario, se analiza la asociación de las dimensiones de la escala por tipo de actividad física en adultas mayores independientes de la comunidad. Investigación instrumental y empírica con dos muestras que suman 614 mujeres mayores (M= 70.27 años, DE= 6.3). Las participantes presentan independencia funcional e integridad cognitiva y son asistentes de clubes de adultos mayores del área urbana. Se aplicaron la Escala de Autoeficacia para el Ejercicio y el Cuestionario de Actividad Física de Adultos Mayores. Se presentan propiedades psicométricas de la escala, análisis descriptivos e inferenciales con matriz de correlación de Spearman. Se utilizaron SPSS versión 21,0 y LISREL 8,80. La adaptación al castellano en esta población presenta cuatro dimensiones con propiedades psicométricas aceptables: estrés, demandas en competencia, influencias externas y el clima. Se estimó un gasto de 1,25 METs (DE= ,54) de actividad física en el hogar, 5,83 METs (DE= 4,40) de ejercicio y 2,09 METs (DE= 1,90) del tiempo libre. Se presenta modelo de ajuste y propiedades psicométricas de la Escala de Autoeficacia para el Ejercicio. Dirigir estrategias para incrementar la autoeficacia secundaria a influencias externas pudiera incrementar la actividad física de este creciente grupo poblacional


It was proposed to analyze the psychometric properties of the Self-efficacy to Regulate Exercise Scale. As a secondary objective, the association of scale dimensions by type of physical activity in older adults independent of the community was analyzed. Instrumental and empirical research with two samples totaling 614 older women (M= 70,27 years, SD= 6,3). The participants present functional independence and cognitive integrity and were assistants of seniors clubs in the urban area. The Self-efficacy to Regulate Exercise Scale and the Physical Activity Scale of the Elderly were applied.SPSS version 21,0 and LISREL 8,80 were used. The adaptation to Spanish in this population has four dimensions with acceptable psychometric properties: stress, competing demands, external influencesand climate. Directing strategies to increase self-efficacy secondary to external influences could increase the physical activity of this growing population group


Foi proposto analisar as propriedades psicométricas da Escala de Autoeficácia para o Exercício. Como objetivo secundário, analisa-se a associação das dimensões da escala por tipode atividade física em idosos independentes da comunidade. Pesquisa instrumental e empírica com duas amostras, totalizando 614 mulheres mais velhas (M= 70,27 anos, DP= 6,3). Os participantes apresentam independência funcional e integridade cognitiva e são assistentes de clubes idosos na área urbana. Foram aplicadas a Escala de Autoeficácia para Exercício e o Questionário de Atividade Física para Idosos. São apresentadas propriedades psicométricas da escala, análises descritivas e inferenciais com a matriz de correlação de Spearman.Foram utilizadas as versões 21,0 e LISREL 8,80 do SPSS. A adaptação ao espanhol nessa população possui quatro dimensões com propriedades psicométricas aceitáveis: estresse, demandas concorrentes, influências externas e clima. Omodelo de ajuste e as propriedades psicométricas da Escala de Autoeficácia para o Exercício são apresentados


Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Idoso , Inquéritos e Questionários , Exercício Físico/fisiologia , Metabolismo Energético/fisiologia , Avaliação Geriátrica , Autoeficácia , Psicometria
19.
An. sist. sanit. Navar ; 42(2): 147-157, mayo-ago. 2019. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-188875

RESUMO

Fundamento: Los cuestionarios Versión reducida en español del cuestionario de actividad física en el tiempo libre de Minnesota (VREM) y Cuestionario internacional de actividad física adaptado a las personas mayores (IPAQ-E) se consideran herramientas de utilidad cuando se pretende cuantificar la actividad física (AF) que la población geriátrica realiza en nuestro país. Sin embargo, son escasos los estudios realizados al respecto de sus propiedades psicométricas. Por ello, esta investigación pretende aportar información sobre la validez convergente de ambos cuestionarios, analizando el grado de asociación que muestran con la condición física (CF). Material y Métodos: Un total de 105 personas (edad media: 76,77 (DE=6,01) años; 84,8% mujeres), contestaron ambos cuestionarios y realizaron la batería Senior Fitness Test (SFT) al objeto de recoger información sobre su nivel de CF. Resultados: Se encontraron correlaciones significativas entre la SFT y los ítems del VREM relativos al gasto energético derivado de caminar (r=0,227) o de realizar actividades deportivas o baile (r=0,235), y el gasto energético total estimado (r=0,314). El IPAQ-E no estableció asociaciones significativas con ninguna de las variables analizadas. Aunque a priori se observó una cierta correlación entre el VREM y el IPAQ-E (r=0,447, p<0,001), y la diferencia media entre ambos parámetros fue nula (p=0,553), se consideró que los cuestionarios mostraron un grado de concordancia escaso, debido a la gran amplitud encontrada en el rango de diferencias. Conclusiones: Se aconseja el empleo del cuestionario VREM para estimar la cantidad de AF en población geriátrica, ya que presenta cierto grado de asociación, si bien débil, con el nivel de CF


Background: In our country the Spanish short version of the Minnesota Leisure Time Physical Activity Questionnaire (VREM) and the International Physical Activity Questionnaire in elderly people (IPAQ-E) are considered useful tools for estimating the amount of physical activity (PA) performed by the geriatric population. However, few studies have been carried out on their psychometric properties. Therefore, this research aims to provide information on their convergent validity by analysing the degree of association that both questionnaires show with physical fitness level. Material and Methods: A total of 105 people (mean age: 76.77 (SD=6.01) years; 84.8% women), answered both questionnaires and performed the Senior Fitness Test (SFT), in order to assess their physical fitness level. Results: Significant correlations were found between the SFT and the VREM items related to energy expenditure derived from walking (r=0.227) or from performing sports activities or dancing (r=0.235), and the estimated total energy expenditure (r=0.314). The IPAQ-E did not establish significant associations with any of the variables analysed. Although a certain a priori correlation was observed between the VREM and the IPAQ-E (r=0.447, p<0.001) and the mean difference between both parameters was nil (p=0.553), it was considered that the questionnaires showed a lack of agreement due to the great width found in the range of differences. Conclusions: The use of the VREM questionnaire is recommended for estimating the amount of PA performed by the geriatric population, as it shows a certain degree of association, albeit weak, with the level of physical fitness


Assuntos
Humanos , Masculino , Feminino , Idoso , Idoso de 80 Anos ou mais , Exercício Físico , Atividades de Lazer , Inquéritos e Questionários , Metabolismo Energético , Psicometria , Reprodutibilidade dos Testes , Espanha
20.
Rev. andal. med. deporte ; 11(4): 199-204, dic. 2018. tab, graf
Artigo em Espanhol | IBECS | ID: ibc-181213

RESUMO

Objetivo: Determinar los hábitos de alimentación y actividad física de forma comparada entre niños y niñas, en un estudio longitudinal a seis años y empleando técnicas de calorimetría para valorar el nivel de actividad física y poderlo contrastar con la información proporcionada por los cuestionarios clásicos. Método: A lo largo de seis cursos de primaria 155 sujetos (86 niñas y 69 niños) cumplimentaron un cuestionario de actividad física y otro de dieta mediterránea. A 41 sujetos (25 niñas y 16 niños) se les midió anualmente el gasto energético total (GET) y en actividad (GEA) durante 48 horas con un medidor ArmBand(R). Resultados: Se registraron GEA de 600 kcal/dia en niñas y 900 kcal/dia en niños (40 y 50 % del GET respectivamente). Dado que ArmBand considera GEA todo el gasto por encima de 2.5 METs, las niñas y niños del estudio tuvieron gastos energéticos por encima de 2.5 METs durante el 40 y 50 % del tiempo respectivamente. Los niños realizan 18000 pasos diarios y las niñas 14.000. Todo ello representa un nivel medio de actividad que podemos calificar del moderado-alto. Conclusiones: La actividad física medida por calorimetría muestra mejor información que los cuestionarios. El nivel de actividad es claramente mayor en niños que en niñas y se mantiene estable durante los 6 años. La adherencia a la dieta mediterránea puede calificarse de media, necesitando mejoras


Objective: To determine the habits of nutrition and physical activity in a comparative way between boys and girls, in a longitudinal study to six years and using calorimetry techniques to assess the level of physical activity and to be able to contrast with the information by the classic questionnaires. Method: Throughout six primary courses, 155 children (86 girls and 69 boys) completed a physical activity questionnaire and a Mediterranean diet questionnaire. Total energy expenditure (GET) and activity (GEA) were measured annually for 48 hours with an ArmBand(R) device in 41 subjects (25 girls and 16 boys). Results: GEA of 600 kcal / day in girls and 900 kcal / day in boys were recorded (40 and 50% of GET respectively). Since ArmBand considers GEA to be all expenses above 2.5 METs, the children in the study had energy costs above 2.5 METs during 40 and 50% of the time respectively. The children perform 18000 daily steps and the girls 14000. All this represents a level of activity that we can qualify as moderate-high. Conclusions: Physical activity measured by calorimetry shows better information than questionnaires. The level of activity is clearly higher in boys than in girls and it remains stable during the 6 years. The adherence to the Mediterranean diet can be described as medium, needing improvements


Objetivo: Determinar os hábitos de alimentação e atividade física de forma comparativa entre meninos e meninas, em um estudo longitudinal de seis anos com utilização técnicas de calorimetria para avaliar o nível de atividade física e contrastá-la com as informações fornecidas pelos questionários clássicos. Método: Ao longo de seis anos primários, 155 indivíduos (86 meninas e 69 meninos) responderam um questionário de atividade física e um questionário sobre dieta mediterrânea. Desses, 41 indivíduos (25 meninas e 16 meninos) foram avaliados anualmente quanto ao gasto energético total (GET) e de atividade (GEA) por 48 horas com um medidor ArmBand(R). Resultados: GEA de 600 kcal/dia em meninas e 900 kcal/dia em meninos foram registrados (40 e 50% do GET, respectivamente). Como a ArmBand considera a GEA todas as despesas acima de 2,5 METs, as crianças do estudo tiveram gastos de energia acima de 2,5 METs durante 40 e 50% do tempo, respectivamente. Os meninos do estudo realizaram 18.000 passos diários e as meninas 14.000. Tudo isso representa um nível médio de atividade que podemos qualificar como moderado-alto. Conclusões: A atividade física medida pela calorimetria mostra melhor informação do que os questionários. O nível de atividade é claramente maior em meninos do que em meninas e permanece estável durante os 6 anos. A adesão à dieta mediterrânea pode ser descrita como moderada, necessitando de melhorias


Assuntos
Humanos , Masculino , Feminino , Criança , Comportamento Alimentar/classificação , Atividade Motora , Exercício Físico , Metabolismo Energético/fisiologia , Distribuição por Sexo , Calorimetria/estatística & dados numéricos , Dieta Mediterrânea/estatística & dados numéricos , Estudos Longitudinais , Cooperação do Paciente/estatística & dados numéricos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...