Combat sport in the body composition of the elderly: A systematic review and meta-analysis study.

OBJECTIVE: To analyze possible changes in body composition in elderly individuals with combat sports as an intervention. METHODS: This study is characterized as a systematic review and meta-analysis. The PRISMA criteria were followed, and the study was registered in PROSPERO under the number CRD42023392613. The databases used were MEDLINE (via PubMed), Scopus, SPORTDiscus, Web of Science, and Science Direct. The risk of bias and methodological quality were assessed using Robins-I, Cochrane, and Testex tools. RESULTS: Of the 126 publications found, 9 studies were included (5 controlled and randomized studies and 4 intervention studies). Of these studies, 6 provided data for the meta-analysis. A total of 126 publications were found and, the studies included in this systematic review had an average of 51 weeks, 3 times a week, and 50 min per session. In the results presented by the meta-analysis the variable body fat showed a reduction (SMD: -0.11; 95% CI: -0.99 to 0.09; p = 0.02; I2 = 0%). CONCLUSION: Combat sports showed an improvement in the body composition of the elderly, with a reduction in the percentage of body fat.

The Association between Physical Activity and Anxiety in Aging: A Comparative Analysis.

(1) Background: As the worldwide aging population is growing, there is a need to embrace the role of physical activity in the anxiety of older people. Objectives: To analyze anxiety in older people practitioners and non-practitioners of physical activity; (2) Methods: ample composed of 690 older people of both genders, unselected volunteers, residing in Brazil, present (as participants or observers) in selected street races in the state of Rio de Janeiro, Brazil, between 30 October 2019, and 12 March 2020. An instrument composed of the sociodemographic questionnaire and questions from the Beck Anxiety Inventory, BAI, and the Physical Activity Inventory for older people, Baecke-Old. Design: Ex-post-facto observational analytical descriptive research; (3) Results: The average age of the sample was in the range of 65 to 69y, 74% female, 94% completed high school, 69% living with the family, 84% practicing physical activity. Anxiety levels were 26% (without), 35% (mild), 21% (moderate), and 18% (severe). The comparison of anxiety showed a difference between the groups of active and sedentary elderly. Logistic regression analysis considering anxiety (yes or no; dichotomous variable) and physical activity (yes or no; dichotomous variable) and Odds Ratio were performed to identify possible influences of the independent variables PA, gender, marital status, and education on anxiety. Only physical activity was associated with anxiety. (4) Conclusions: The sample data of this research point to the conclusion that physical activity influences anxiety levels with 98% certainty, and it is suggested that it be enriched in the future with different studies with different designs. The older people practitioners of physical activity with a high level of education presented as 26% without, 35% mild, 21% moderate, and 18% severe anxiety. More active individuals are less likely to develop anxiety.

Hemodynamic and motion demands of soccer referees: a comparison between series A and B of the State Championship of Rio de Janeiro, Brazil / Las demandas hemodinámicas y de movimiento de los árbitros de fútbol: una comparación entre las series A y B del Campeonato Estatal de Río de Janeiro, Brasil

Introduction: Soccer referees need excellent conditioning to withstand the physical and psychological demands of games.Objective: To compare the hemodynamic variables, speed, cadence, and distance coursed of referees during soccer gamesof series A and B in Rio de Janeiro, Brazil. Material and method: The total number of decisions made during the 10 soccer matches evaluated was 1,224 observabledecisions of 10 professional Soccer referees (one per soccer match: 5 in series A and 5 in series B). We used a frequency meter(Polar, model V800, PolarFlow software) and video footage of the games (Sony, model PXW-Z150, 4K). The moments considered were: the decision, 15 seconds that preceded it, and the period from the beginning of each stage to each decision. Were studied the hemodynamic [average heat rate (mean HR), maximum heart rate (HRmax), and minimum heart rate (HRmin)]and motion variables [average speed (Vmed), maximum speed (Vmax), average cadence (cadencemed), maximum cadence(cadencemax), minimum cadence (cadencemin), and distance covered]. Descriptive measures were used to present the resultsof the variables studied and the Student’s T-Test for independent samples to test the study hypotheses. The significance levelwas set at 95% (P <0.05). Results: The matches of series A had a greater number of interventions and greater hemodynamic load at the exact momentof the decision than those of series B. significantly (P <0.05): mean HR, HRmax, HRmin, Vmax, Cadencemed, and Cadencemax in seriesA were higher compared to series B. In the 15 seconds before the decisions: mean HR, HRmax, and HRmin in series A were higherthan in series B, and Vmed in series B was higher in relation to series A. At the exact moment of the decisions: mean HR in seriesA was higher in relation to series B...(AU)

Introducción: Los árbitros de fútbol necesitan un excelente acondicionamiento para soportar las exigencias físicas y psicológicas de los partidos. Objetivo: Comparar las variables hemodinámicas [frecuencia cardíaca media (mean HR), frecuencia cardíaca máxima (HRmax)y frecuencia cardíaca mínima (HRmin)] y desplazamiento [velocidad media (Vmed), velocidad máxima (Vmax), cadencia media(cadencemed), cadencia máxima (cadencemax), cadencia mínima (cadencemin) y distancia recorrida] durante intervencionesarbitrales en partidos entre las series A y B en Río de Janeiro, Brasil. Material y método: Se analizaron 1.224 decisiones observables de 10 árbitros profesionales de fútbol cada uno en 1 partido(10 partidos del Campeonato Carioca: 5 en la serie A y 5 en la B). Se utilizaron frecuencímetros (Polar, modelo V800, softwarePolarFlow) y secuencias de video de los juegos (Sony, modelo PXW-Z150, 4K). Los momentos considerados fueron: la decisión,los 15 segundos que la precedieron y el tiempo desde el inicio de cada etapa hasta cada decisión. Resultados: Los partidos de la serie A tuvieron mayor número de intervenciones y mayor carga hemodinámica en el momentoexacto de la decisión que los de la serie B. significativamente (p <0,05): mean HR, HRmax, HRmin, Vmax, cadencemed y cadencemaxin la serie A fueron mayores que en la serie B. En los 15 segundos previos a las decisiones: mean HR, HRmax y HRmin en la serieA fueron mayores con relación a la serie B, la Vmed en la serie B fue mayor en relación a la serie A. Conclusión: Las intervenciones de los árbitros generalmente se realizan bajo presión hemodinámica elevada. Los partidosdisputados en la serie A requieren un número de intervenciones e intensidad hemodinámica superior a los partidos de laserie B...(AU)

Influence of resistance training on muscle architecture in older adults: A systematic review and meta-analysis of randomized controlled trials.

BACKGROUND: Resistance training (RT) consists of planned exercise programs to increase muscle strength capacity through neural and structural adaptations, such as changes in the geometric arrangement of muscle fibers. This study aimed to analyze the influence of RT on muscle architecture in older people. METHODS: This PROSPERO-registered systematic review and meta-analysis (identification number CRD42022340477) followed the PRISMA guidelines. Four electronic databases were searched for eligible randomized controlled trials (RCTs) that observed older individuals submitted to RT programs that reported muscle architecture outcomes. RESULTS: Seventeen RCTs met the eligibility criteria with a total of 488 participants. The main results of the meta-analysis showed that RT interventions had a significant effect on the thickness of the medial gastrocnemius (SMD = 0.12; 95% CI: - 0.07 to 0.17; p < 0.00001; I2 = 0%). CONCLUSION: Based on available evidence, studies included in this review showed improvement in maximum isometric force, pennation angle, fascicle length, thickness, and muscle activation after RT interventions. In turn, the meta-analysis suggested a potential for improving the thickness of the medial gastrocnemius after the intervention. However, any clinical implications drawn from the analyses should be interpreted with caution, as these findings are substantially limited due to a low number of included studies and a potential heterogeneity between studies.

Analysis of physiological markers and risk factors for the development of rhabdomyolysis in military personnel: a systematic review.

OBJECTIVES: To analyze case reports with individual patient data belonging to the Armed Forces submitted to specific physical or military combat training that was affected by rhabdomyolysis and identify factors that influenced the diagnosis and clinical evolution of the syndrome. CONTENT: We conducted a systematic review following the PRISMA guidelines and registered on PROSPERO (CRD42021242465). We searched MedLine (via PubMed), Scopus, Cochrane, Lilacs, SciELO, CINAHL, Web of Science, SPORTDiscus, ScienceDirect, and PEDro databases for studies that reported cases of military personnel affected by rhabdomyolysis. SUMMARY AND OUTLOOK: Thirteen studies met the inclusion criteria. Forty-nine individual cases of rhabdomyolysis were analyzed. From them, it was possible to identify several associated factors, which were responsible for developing rhabdomyolysis in military personnel. Thirty military personnel (60%) practiced physical training and 20 (40%) practiced specific military combat training. The creatine kinase (CK) peak ranged from 1,040 to 410,755 U/L, with an average of 44.991 U/L, and 14 (28%) of the cases reported alteration of renal function and four militaries (8%) evolved to death condition. Physical activities performed strenuously and without proper planning conditions such as room temperature, the period without adequate water intake, the amount of equipment used during the activity contributed to the development of rhabdomyolysis in the cases of military personnel analyzed in the present study. Therefore, it is recommended that future studies investigate the relationship between the prevalence of rhabdomyolysis cases and the severity of its consequence when associated with progressive methods of training, hydration control, acclimatization to austere environments, monitoring for the existence of hereditary diseases, and control of the use of supplementary nutritional substances.

Effects of Multicomponent Exercise Training on the Health of Older Women with Osteoporosis: A Systematic Review and Meta-Analysis.

This study aimed to analyze the effects of multicomponent exercise training in older women with osteoporosis. We conducted a systematic review following the PRISMA guidelines and registered on PROSPERO (number CRD42022331137). We searched MEDLINE (via PubMed), Web of Science, Scopus, and CINHAL databases for randomized experimental trials that analyzed the effects of physical exercise on health-related variables in older women with osteoporosis. The risk of bias in the studies was verified using the Cochrane Collaboration tool and the Jadad scale was used to assess the methodological quality of the studies. Fourteen randomized controlled trials were included, with a total of 544 participants in the experimental group and 495 in the control group. The mean age of all participants was 68.4 years. The studies combined two to four different exercise types, including strength, aerobic, balance, flexibility, and/or functional fitness training. The practice of multicomponent training with an average of 27.2 weeks, 2.6 sessions per week, and 45 min per session showed improvements in strength, flexibility, quality of life, bone mineral density, balance, and functional fitness and reduced the risk of falls in older women with osteoporosis. Multicomponent training was shown to be effective in improving health-related variables in older women with osteoporosis.

Resistance Circuit Training or Walking Training: Which Program Improves Muscle Strength and Functional Autonomy More in Older Women?

To evaluate the effects of two programs (resistance and walking training) on the functional autonomy and muscle strength (isometric and dynamic) of older women, 67 subjects were divided randomly into three groups: resistance training (RTG; Mean = 64.70 ± 6.74 years), walking (WG, Mean = 65.56 ± 7.82 years), and control (CG; Mean = 64.81 ± 4.34). The experimental groups underwent a 16-week intervention. Muscle strength (isometric and dynamic) and functional autonomy were assessed. The subjects participating in the RTG showed improvements in the comparison pre to post-test in the maximal forces of upper limb (MULS) (Δ% = 49.48%; p = 0.001) and lower limb (MLLS) (Δ% = 56.70%; p = 0.001), isometric biceps forces (BIS) (Δ% = 30.13%; p = 0.001) and quadriceps forces (QIS) (Δ% = 65.92%; p = 0.001), and in the general index (GI) of functional autonomy (Δ% = −18.32%; p = 0.002). The WG improved in all functional autonomy tests, except for the standing up from prone position test (SVDP). In strength tests, the WG obtained improvements only in the QIS (Δ% = 41.80%; p = 0.001) and MLLS (Δ% = 49.13%; p = 0.001) tests. The RTG obtained better results (p < 0.05) when compared to the WG and CG. The results allow us to infer that resistance exercise programs are more effective in increasing strength and functional autonomy, a fact that may mitigate the deleterious effects on health of aging.

Effects of two training programs on health variables in adults with chronic low back pain: a randomized clinical trial.

Aim: To analyze the effects of two training programs on health variables in adults with low back pain (LBP). Methods: Thirty-eight adults were randomly divided into three groups: resistance training (RG); resistance training with core training (RCG) and control (CG). Results: There were reductions in body mass index (BMI) in RG and RCG, waist circumference in RG and RCG, pain in RG, RCG and CG, CK in RCG, stress in RG and RCG, functional deficiency in RG and RCG and increases in trunk flexor and extensor strength in the RG and RCG. Conclusion: Resistance training, with or without core training exercises, reduced the levels of LBP, functional disability, stress and CK, and increased the strength of trunk flexors and extensors. Trial registration: Brazilian Clinical Trials Registry: ReBEC (RBR-5khzxz).

Resistance and core exercises can be an alternative treatment for adults with low back pain (LBP) that does not require any medicines. This study was designed to test the effectiveness of different exercise regimens on the health of people with low back pain. We divided adults with LBP into three groups: resistance training, resistance training with core training and a control group. We assessed the health of the participants by measuring certain chemicals in their blood samples, pain intensity, functional disability, perceived stress level and muscle strength. After 4 weeks, there were reductions in body mass index, waist circumference, pain, creatine kinase (CK ­ a natural chemical found in the bloodstream that may be higher when muscles are stressed or damaged), stress, functional impairment and increases in the strength of muscles involved in flexing the trunk (torso) in both intervention groups. Therefore, resistance training, with or without basic training exercises, is an effective form of treatment to reduce LBP.

Rhabdomyolysis Episode in an Individual with McArdle's Disease after Low Aerobic Exercise.

McArdle's disease, known as blockage of muscle glycogen metabolism, is characterized by glycogen accumulation of chains in skeletal striated muscles. One of the typical symptoms of the disease is the feeling of intolerance to exercise. Severe muscle cram and contracture, which often cause stiffness, occur due to a lack of muscle energy substrate during the exercise. These factors can lead to muscle damage, myoglobinuria, and, in severe cases, renal failure and rhabdomyolysis. Rhabdomyolysis is a syndrome that presents injury and necrosis of muscle cells leading to the release of intracellular material to the circulatory system. The present study aimed to report rhabdomyolysis in an individual with McArdle's disease after exercise of walking with low intensity. Patient, aged 33 years, was treated in the emergency room of a hospital located in the State of Rio de Janeiro, Brazil. After performing a full lap on the block of home (~500 m in ~4 min 37 s), walking at a moderate speed (~6.5 km/h), the individual felt sick and was rescued, later being hospitalized. The examinations collected presented hematocrit (HCT) compatible with chronic disease anemia and myoglobinuria. The patient was discharged from the intensive care center on the 3rd day, after a 45% drop in creatine kinase. The patient described in the present study achieved full recovery. Attention to symptoms, early diagnosis, and immediate treatment made it possible to interrupt the development of complications caused by rhabdomyolysis, not allowing progression to acute renal failure.

Philosophy of physical education and sports in Brazil: an analysis of the philosophical foundations in the work of Inezil Penna Marinho / Filosofia da educação física e do esporte no Brasil: uma análise dos fundamentos filosóficos na obra de Inezil Penna Marinho

ABSTRACT The present study aimed to investigate the historical origins of the Philosophy of Physical Education and Sports in Brazil. The writings of Inezil Penna Marinho, former Professor of the University of Brazil between 1945 and 1984, were the first on this specific content in Brazil. Data collection resulted in six thematic categories, namely "Comments on Translated Fragments", "Philology of Physical Education and Sports", "Games, Hedonism and Transfiguration", "Leisure and Axiology", "Philosophy of Curricular Physical Education", and "Metaphysics of Brain". Marinho was an Eclectic, Foundationalist, and Casuistic philosopher. In his texts, Physical Education got ethical, axiological, aesthetical, epistemic, psychoanalytical, educational, political, and metaphysical attributes. Additionally, Marinho developed dialogues with authors from Aristotelianism, Platonism, Renaissance, Enlightenment, Evolutionism, Empirism, Freudism, Critical Theory, Hedonism, Platonic Theology, Stoicism, Cartesianism, and Bergsonism. Five classical issues appeared in his production: happiness as a transcendental demand; nature of the correspondence between language and reality; duality mind-body; historical conflict between freedom and domination; constitution of the subject. For him, gymnastics seemed to be higher in axiological importance than sports, games, and general physical activity. This result shows that the Philosophy of Physical Education and Sports in Brazil has its own traditions.

RESUMO O presente estudo objetivou investigar as origens históricas da Filosofia da Educação Física e do Esporte no Brasil. Os escritos de Inezil Penna Marinho, ex-professor da Universidade do Brasil entre 1945 e 1984, foram os primeiros sobre esse conteúdo específico no Brasil. A coleta de dados resultou em seis categorias temáticas, nomeadamente "Comentários sobre Fragmentos Traduzidos", "Filologia da Educação Física e Desporto", "Jogos, Hedonismo e Transfiguração", "Lazer e Axiologia", "Filosofia da Educação Física Curricular" e "Metafísica do cérebro". Marinho foi um filósofo eclético, fundacionalista e casuístico. Nos textos de Marinho, a Educação Física tem atributos éticos, axiológicos, estéticos, epistêmicos, psicanalíticos, educacionais, políticos e metafísicos. Adicionalmente, Marinho desenvolveu diálogos com autores do Aristotelismo, Platonismo, Renascimento, Iluminismo, Evolucionismo, Empirismo, Freudismo, Teoria Crítica, Hedonismo, Teologia Platônica, Estoicismo, Cartesianismo e Bergsonismo. Cinco questões clássicas apareceram em sua produção: a felicidade como demanda transcendental; natureza da correspondência entre linguagem e realidade; dualidade mente-corpo; conflito histórico entre liberdade e dominação; constituição do sujeito. Para Marinho, a ginástica parecia ter maior importância axiológica do que esportes, jogos e atividade física geral. Esse resultado mostra que a Filosofia da Educação Física e do Esporte no Brasil possui tradições próprias.

Effect of 6 Months of Physical Training on the Physical Fitness of Young Brazilian Army Cadets.

Following the increase in the employment of women in conflicts around the world, the federal government of Brazil enacted a law which determines the participation of women in the military. The aim of this study was to analyze the effect of six months of physical training (PT) on the physical fitness of young Brazilian Army cadets to carry out the physical assessments provided in military training. Sixty-eight members of the (19.4 ± 1.0 years) military from the Brazilian Army (BA), with BMI of (23.61 ± 2.17/21.81 ± 2.26) respectively and divided in two groups (men/women) participated in the study. PT was conducted by Manual EB20-MC10.350. Anthropometric measurements and assessment of body composition by dual X-ray absorptiometry were performed. The Student's t test, percentage evolution equation, and Levene test were used. Results showedasignificant increase in anthropometric variables and cardiorespiratory fitness in both groups. Bone health variables and visceral fat presented a significant increase in the malegroup. In terms of muscle fitness handgrip and isometric strength there was no significant variation between the groups and push-up and pull-up there was significant variation between the groups. Percentage evolution was greater in female group. The conclusion shows PT was able to cause beneficial changes, promoting positive improvement in bone health, especially in women. Also, PT was shown to enhance cardiorespiratory capacity, and muscle fitness of the upper limbs in all participants.

The acute effect of two massage techniques on functional capability and balance in recreationally trained older adult women: A cross-over study.

With aging comes a reduction in neuromuscular and neuromotor function. Different strategies have been used to mitigate these functional losses. Certain manual therapy techniques and interventions have been explored with regard to their ability to improve functional capability and balance in an older adult population. The purpose of this study was to analyze the acute effects of two massage techniques on functional capability and balance performance in recreationally trained older adult women. Twenty-eight older adult women (66.74 ± 4.61 years) completed three interventions: a) stick massage followed by functional capability and balance performance tests (MMS), b) manual massage followed by functional capability and balance performance tests (MM), c) no MMS or MM (control condition (CC)) - only performed the functional capability and balance performance tests. Functional capability was assessed by four tests that are part of the Senior Fitness Test: the 6-min walk (W6), the chair sit-and-reach (CSR), the 8-foot up-and-go (8FUG), and the 30s-chair stand (30s-CS). Balance was assessed using the Berg Balance Scale (BBS). Significant differences (p < 0.001) were observed between MM and MMS compared to CC among 30s-CS, W6, CSR, and 8FUG. BBS showed a significant difference between MM and CC (p = 0.041). Both MM and MMS demonstrated significant acute improvements in the functional capability of recreationally trained elderly women and may be included in an exercise program.

Correlation between pain, anthropometric measurements, stress and biochemical markers in women with low back pain.

Aim: To analyze the associations between pain duration, pain levels, anthropometric measures, perceived stress and biochemical markers in women with low back pain. Materials & methods: Forty-two participants were submitted to body mass, height, abdominal circumference, cortisol and creatine kinase (CK) collections. Pain duration, pain levels and stress were analyzed through specific questionnaires. Results: There were positive correlations between abdominal circumference and body mass, duration of pain and age, abdominal circumference, CK and age, CK and BMI, CK and abdominal circumference, and CK and duration of pain (p < 0.05). Conclusion: The higher the level of tissue damage over the years, the greater the tendency for higher levels of low back pain perception. Central fat was related to greater load on the spine.

Lay abstract Low back pain (LBP) is one of the factors that hinders the routine and productivity of women. LBP can cause functional disability and negatively interfere with work activities. The increase in pain can be caused by mechanical postural factors (such as behavioral habits), traumatic (such as accidents), and psychosocial factors (such as physical inactivity). Chronic LBP can influence behavioral aspects due to adaptations of pain feedback, such as postures to avoid pain and sedentary lifestyle. In this study, we observed that duration of LBP was related to higher levels of creatine kinase, which is an enzyme of our body that can be related to tissue damage. Moreover, the abdominal circumference, due to the accumulation of fat in this region, presented correlation with higher levels of tissue damage by creatine kinase and longer exposure time with LBP.

Effects of Motor Imagery as a Complementary Resource on the Rehabilitation of Stroke Patients: A Meta-Analysis of Randomized Trials.

BACKGROUND: Stroke is the second leading cause of death and a leading cause of disability worldwide. Motor imagery is a technique that can be utilized in the rehabilitation process to improve the lives of patients with a functional disability acquired by this pathology. AIM: To evaluate the effects of motor imagery as a complementary intervention for the rehabilitation of stroke patients. METHODS: We conducted a systematic review in MEDLINE/PubMed, Scopus, Web of Science, and PEDro databases. We included randomized controlled trials (RCTs) that used motor imagery as a complementary resource for the rehabilitation of patients affected by stroke, who had motor function and functional independence as outcomes. RESULTS: Of the 1,473 studies found, ten RCTs were included. Regarding the interventions, motor imagery was associated with traditional rehabilitation, virtual reality, physical practice, structured progressive circuit class therapy, and electromyography. The upper and lower extremity performance were accessed through the Fugl-Meyer Assessment (FMA) and gait speed, respectively. Although the practice of motor imagery at least twice a week during three weeks showed to be effective in improving the motor performance of post-stroke patients, the studies' protocols present a high heterogeneity, with training session times lasting between 30 to 180 minutes and a post-stroke invention window of one to 12 months. CONCLUSIONS: Motor imagery has been shown to be an efficacious technique in the treatment of post-stroke patients when used as a complement to traditional rehabilitation techniques. However, greater standardization of interventions and studies with higher methodological quality are required to determine further conclusions.

Evaluation methods and objectives for neuromuscular and hemodynamic responses subsequent to different rest intervals in resistance training: a systematic review / Métodos de evaluación y objetivos para las respuestas neuromusculares y hemodinámicas posteriores a diferentes intervalos de descanso en el entrenamiento de resistencia: una revisión sistemática

Introduction: The training routine planned, and performed correctly results in exercises that, systematically organized,influence the levels of strength, and muscle hypertrophy. However, the magnitudes of these gains vary considerably. Tooptimize these gains, it is important to underst, and the interaction between training variables such as external load, volume,number of exercises, number of repetitions, duration of repetitions, the order of exercises, number of series, recovery intervalbetween series, and the exercises, as well as the time under tension. The influence of the recovery interval on the responsefollowing exercise on neuromuscular components is very important. However, different objectives, and instruments are usedto evaluate these responses.Objective: The purpose of this study is to conduct a systematic review of the assessment methods, and objectives for respon-ses after different recovery intervals in strength training. METHODS: The present study is characterized by a systematic reviewstudy. Articles found in the following databases were considered for the systematic review: Scopus, PubMed / MEDLINE, Webof Science, Cochrane Library. The following descriptors, and their respective synonyms according to the terms MeSH wereused in the databases, both singular, and plural: “Resistance Training”, “Rest Interval”, and “Bech Press”. As filters were used: a)species (humans), and type of study (original).Results: Seven studies were analyzed that met the established criteria.Conclusion: The studies presented have verified the influence of different recovery intervals on muscle, and hemodynamicresponses. Evaluating image measurements such as ultrasound, and resonance, blood measurements such as GH, Testosterone,IGF-1, and Lactate, number of repetitions for performance, and fatigue, as well as heart rate, and blood pressure.(AU)

Introducción: La rutina de entrenamiento planificada y realizada correctamente da como resultado ejercicios que, organizadossistemáticamente, influyen en los niveles de fuerza e hipertrofia muscular. Sin embargo, las magnitudes de estas gananciasvarían considerablemente. Para optimizar estas ganancias, es importante comprender la interacción entre las variables deentrenamiento como la carga externa, el volumen, el número de ejercicios, el número de repeticiones, la duración de lasrepeticiones, el orden de los ejercicios, el número de series, el intervalo de recuperación entre series y los ejercicios, así comoel tiempo bajo tensión. La influencia del intervalo de recuperación en la respuesta después del ejercicio en los componentesneuromusculares es muy importante. Sin embargo, se utilizan diferentes objetivos e instrumentos para evaluar estas respuestas.Objetivo: El propósito de este estudio es realizar una revisión sistemática de los métodos y objetivos de evaluación paralas respuestas posteriores a los diferentes intervalos de recuperación en el entrenamiento de fuerza. MÉTODOS: El presenteestudio se caracteriza por un estudio de revisión sistemática. Los artículos encontrados en las siguientes bases de datos seconsideraron para la revisión sistemática: Scopus, PubMed / MEDLINE, Web of Science, Cochrane Library. Los siguientes des-criptores y sus respectivos sinónimos según los términos MeSH se utilizaron en las bases de datos, tanto en singular como enplural: “Entrenamiento de resistencia”, “Intervalo de descanso” y “Bench Press”. Como filtros se utilizaron: a) especies (humanos)y tipo de estudio (original).Resultados: Se analizaron siete estudios que cumplieron con los criterios establecidos.Conclusión: Los estudios presentados han verificado la influencia de diferentes intervalos de recuperación en las respuestasmusculares y hemodinámicas. Evaluación de mediciones de imagen como ultrasonido y resonancia...(AU)

The reproducibility of the 1hz gps in the aciclic displacement with intermittent intensity / La reproducibilidad del gps de 1 hz en desplazamiento acíclico con intensidad intermitente

Objective: the aim of this study was to verify the reproducibility index of the frequency meter with GPS technology with recording speed of 1Hz in acyclic displacement and intermittent intensity, performed by soccer referees. Materials and methods: it was characterized by a field study with a quantitative trait involving 14 men, aged 20.42 ± 2.78 years, from a barracks in the city of Rio de Janeiro. Polar heart rate monitor with 1Hz GPS model V800 was used. The protocol used was adapted from the FIFA test protocol for soccer referees, so that 10 "shots" of 75m in 15s were accomplished by 25m in 20 of recovery. Testing and retest were applied with 7 days interval and identical protocols: heating, ambiance (4 "shots" following the model of the protocol above) and then the test. Since the circuit covered in the test protocol was 1000 m. Results: a mean of 1002.5 ± 17.12 m was obtained in the test and in the test 1010.83 ± 32.88 m, the coefficients of variation were respectively 1% and 3%. The difference was not significant between the test and the retest (P-value> 0.05), and the intraclass correlation coefficient indicated a moderate association between the measures. Conclusion: therefore, it is suggested that it is acceptable to use a frequency gauge with a recording speed of 1Hz to monitor displacements of soccer referees in acyclic displacement and intermittent intensity..Au

Objetivo: el objetivo de este estudio fue verificar el índice de reproducibilidad del medidor de frecuencia con tecnología GPS con velocidad de grabación de 1Hz en desplazamiento acíclico e intensidad intermitente, realizado por árbitros de fútbol. Materiales y métodos: se caracterizó por un estudio de campo con un rasgo cuantitativo que involucró a 14 hombres, de 20.42 ± 2.78 años, de un cuartel en la ciudad de Río de Janeiro. Se utilizó un monitor de frecuencia cardíaca polar con GPS 1Hz modelo V800. El protocolo utilizado fue adaptado del protocolo de prueba de la FIFA para los árbitros de fútbol, de modo que se lograron 10 "tiros" de 75 m en 15 segundos por 25 m en 20 de recuperación. La prueba y la nueva prueba se aplicaron con un intervalo de 7 días y protocolos idénticos: calentamiento, ambiente (4 "disparos" siguiendo el modelo del protocolo anterior) y luego la prueba. Dado que el circuito cubierto en el protocolo de prueba fue de 1000 m. Resultados: se obtuvo una media de 1002.5 ± 17.12 m en la prueba y en la prueba 1010.83 ± 32.88 m, los coeficientes de variación fueron respectivamente 1% y 3%. La diferencia no fue significativa entre la prueba y la nueva prueba (valor P> 0.05), y el coeficiente de correlación intraclase indicó una asociación moderada entre las medidas. Conclusión: por lo tanto, se sugiere que sea aceptable usar un medidor de frecuencia con una velocidad de grabación de 1Hz para monitorear los desplazamientos de los árbitros de fútbol en desplazamiento acíclico e intensidad intermitente..Au

Effects of physical exercise on low back pain and cortisol levels: a systematic review with meta-analysis of randomized controlled trials.

Aim: To verify the effects of physical exercise on low back pain (LBP) and serum cortisol levels in individuals with chronic LBP. Materials & methods: Randomized controlled trials evaluating the effects of exercise on LBP perception and cortisol levels in adults with nonspecific chronic LBP were included. Results: Four randomized controlled trials were included, with a total of 85 participants in the exercise group and 84 in the control group. The interventions reduced -1.61 (95% CI: -2.36 to -0.85) with inconsistency I2 = 72% (p = 0.031) the LBP level and increased 1.05 (95% CI: 0.22-2.32) with inconsistency I2 = 86% (p < 0.0001) the cortisol levels. Conclusion: The practice of physical exercise for 6 weeks or more reduced LBP levels, whereas the rate of progression of an exercise-training program in people with chronic LBP is greater than 4 weeks, but increased the cortisol serum levels in individuals with LBP.

Crawl technique observation sheet for beginning swimmers: an evaluation proposal for swimming teachers

Abstract Aims: This study aimed to present a technical evaluation proposal for the crawl stroke that can be used with large groups of swimmers, based on an observation sheet. Methods: Fifteen healthy university students aged between 18 and 30 years were chosen to participate in the study. The subjects were recorded swimming at a distance of 50 meters using the crawl technique at a comfortable and self-determined speed. The recordings simulated docent observation capacity. Five swimming teachers were selected to evaluate the proposed checklist and the subjects' technique. An observation sheet was created based on references present in literature containing ten items that are considered fundamental for swimming movements. The study was divided into (i) checklist validation, (ii) intra-evaluator consistency, and (iii) inter-evaluator consistency. Results: The proposed checklist fulfilled the validity criteria, with intra-evaluator consistency varying between reasonable and substantial, with k varying between 0.36 and 0.73 respectively, while inter-evaluator consistency was deemed reasonable (k = 0.24). Conclusion: According to the results that were obtained, the suggested list is valid and adequate for what it proposes to do.

Kinesiophobia and functionality perception in postmenopausal women with chronic low back pain / Cinesiofobia e percepção de funcionalidade em mulheres na pós-menopausa portadoras de lombalgia crônica

ABSTRACT BACKGROUND AND OBJECTIVES: Low back pain is the main cause of global disability and is prevalent in women, tending to increase after menopause. The present study aimed to analyze the correlation between body mass index, muscle strength, kinesiophobia, estradiol, functional disability, and low back pain perception in postmenopausal women with chronic low back pain. METHODS: Twenty-two postmenopausal women with chronic low back pain were evaluated. Abdominal and lower back strength were assessed using isometric tests. Basal serum estradiol levels were analyzed using the chemiluminescence method. Kinesiophobia, low back pain perception, and low back functional disability were determined using the Tampa Scale for Kinesiophobia, the visual analog scale, and the Roland Morris Questionnaire, respectively. RESULTS: The Spearman correlation test showed correlations between the levels of kinesiophobia and the value of body mass (rho= -0.513; p=0.015) and the levels of kinesiophobia and the values of body mass index (rho= -0.576; p=0.005). There was correlation between the levels of kinesiophobia and perception of lumbar functional disability (rho= 0.434; p=0.043). No significant correlations were found between the variables of muscle strength, estradiol, and low back pain perception. CONCLUSION: Postmenopausal women with low back pain who have higher body mass and body mass index values tend to present lower levels of kinesiophobia. There is a direct relationship between the fear of moving or maintaining a specific position and the perception of the functionality and safety of the lumbar spine.

RESUMO JUSTIFICATIVA E OBJETIVOS: A dor lombar é a principal causa de incapacidade global e possui prevalência em mulheres, tendendo a aumentar após a menopausa. O presente estudo objetivou analisar as associações entre índice de massa corporal, força muscular, cinesiofobia, estradiol, incapacidade funcional e percepção de dor lombar em mulheres na pós-menopausa com dor lombar crônica. MÉTODOS: Foram avaliadas 22 mulheres na pós-menopausa diagnosticadas com dor lombar crônica. A força abdominal e dos extensores da coluna foi avaliada por meio de testes isométricos. Os níveis séricos basais de estradiol foram analisados pelo método de quimiluminescência. A cinesiofobia, a percepção de dor e a incapacidade funcional lombar foram determinadas pela Tampa Scale for Kinesiophobia, escala analógica visual e Roland Morris Questionnaire, respectivamente. RESULTADOS: O teste de correlação de Spearman mostrou associações entre os níveis de cinesiofobia e os valores de massa corporal total (rho=-0,513; p=0,015) e os níveis de cinesiofobia e os valores de índice de massa corporal (rho=-0,576; p=0,005). Foi encontrada correlação entre os níveis de cinesiofobia e de percepção de incapacidade funcional lombar (rho=0,434; p=0,043). Não houve correlações significativas entre as variáveis força muscular, estradiol e percepção de dor. CONCLUSÃO: Mulheres na pós-menopausa com dor lombar crônica que apresentam maiores valores de massa corporal total e índice de massa corporal tendem a apresentar menores níveis de cinesiofobia. Existe relação direta entre o medo de se movimentar ou permanecer em uma posição específica e a percepção de funcionalidade e segurança da coluna lombar.

Cortisol and serotonin levels in schizophrenic inpatients undergoing aerobic training / Níveis de cortisol e serotonina em pacientes esquizofrênicos submetidos a treinamento aeróbico / Niveles de cortisol y serotonina en pacientes esquizofrénicos sometidos a entrenamiento aeróbico

ABSTRACT Introduction Individuals with schizophrenia tend to have high levels of cortisol and changes in the serotonergic mechanism. However, the effects of aerobic exercises on cortisol and serotonin levels in schizophrenic inpatients are not well established. Objective To evaluate the effects of an aerobic training program on serotonin and cortisol levels in schizophrenic inpatients. Methods Thirty schizophrenic subjects were randomly assigned to an exercise group (EG; n = 15; age: 29 ± 9.08 years; BMI: 23.57 ± 4.33 kg/m2) or a control group (CG; n = 15; age: 33.17 ± 12.8 years; BMI: 22.89 ± 5.68 kg/m2). EG performed an aerobic training program in a cycle ergometer (57% to 67% of the maximum heart rate) for 30 minutes, five days a week, with a total of twenty sessions. The analysis of cortisol (Chemiluminescence Method) and serotonin (High Performance Liquid Chromatography) was performed before and after testing in both groups. The level of significance was of p<0.05. Results After the exercise sessions, EG showed a significant reduction in cortisol levels (Δ = -5.68 mcg/dl%, p < 0.0001) and a significant increase in serotonin levels (Δ = 47.63 ng/ml, p = 0.015) compared to CG. Conclusion The aerobic training program was effective in reducing cortisol levels and increasing serotonin levels in schizophrenic inpatients. Level of evidence I; Randomized clinical trial.

RESUMO Introdução Indivíduos com esquizofrenia tendem a apresentar níveis elevados de cortisol e alterações no mecanismo serotoninérgico. Entretanto, os efeitos dos exercícios aeróbicos sobre os níveis de cortisol e serotonina em pacientes esquizofrênicos não estão bem estabelecidos. Objetivos Avaliar os efeitos de um programa de treinamento aeróbico sobre os níveis de serotonina e cortisol em pacientes esquizofrênicos internados. Métodos Trinta indivíduos esquizofrênicos foram randomicamente designados para um grupo de exercícios (GE; n = 15; idade: 29 ± 9,08 anos; IMC: 23,57 ± 4,33 kg/m2) ou para um grupo controle (GC; n = 15; idade: 33,17 ± 12,8 anos, IMC: 22,89 ± 5,68 kg/m2). O GE realizou um programa de treinamento aeróbico em cicloergômetro (57% a 67% da frequência cardíaca máxima) por 30 minutos, cinco dias por semana, totalizando 20 sessões. A análise de cortisol (método quimioluminescente) e serotonina (cromatografia líquida de alta eficiência) foi realizada antes e depois do teste em ambos os grupos. O nível de significância foi de p < 0,05. Resultados Depois das sessões de exercício, o GE mostrou redução significativa do nível de cortisol (Δ = -5,68 mcg/dl%, p < 0,0001) e aumento significativo do nível de serotonina (Δ = 47,63 ng/ml, p = 0,015) em comparação com o GC. Conclusão O programa de treinamento aeróbico foi efetivo para a redução dos níveis de cortisol e aumento dos níveis de serotonina em pacientes esquizofrênicos. Nível de evidência I; Estudo clínico randomizado.

RESUMEN Introducción Las personas con esquizofrenia tienden a tener altos niveles de cortisol y cambios en el mecanismo serotoninérgico. Sin embargo, los efectos del ejercicio aeróbico sobre los niveles de cortisol y serotonina en pacientes esquizofrénicos no están bien establecidos. Objetivos Evaluar los efectos de un programa de entrenamiento aeróbico sobre los niveles de serotonina y cortisol en pacientes esquizofrénicos internados. Métodos Treinta individuos esquizofrénicos fueron asignados aleatoriamente a un grupo de ejercicio (GE; n = 15; edad: 29 ± 9,08 años; IMC: 23,57 ± 4,33 kg/m2) o a un grupo control (GC; n = 15; edad: 33,17 ± 12,8 años, IMC: 22,89 ± 5,68 kg/m2). GE realizó un programa de entrenamiento aeróbico en cicloergómetro (57% a 67% de la frecuencia cardíaca máxima) durante 30 minutos, cinco días a la semana, totalizando 20 sesiones. El análisis de cortisol (método quimioluminiscente) y serotonina (cromatografía líquida de alta resolución) se realizó antes y después de la prueba en ambos grupos. El nivel de significación fue p < 0,05. Resultados Después de las sesiones de ejercicio, el GE mostró una reducción significativa en el nivel de cortisol (Δ = -5,68 mcg/dl٪, p < 0,0001) y un aumento significativo en el nivel de serotonina (Δ = 47,63 ng/ml, p = 0,015) en comparación al GC. Conclusión El programa de entrenamiento aeróbico fue efectivo para reducir los niveles de cortisol y aumentar los niveles de serotonina en pacientes esquizofrénicos. Nivel de evidencia I; Estudio clínico aleatorizado.