Validity and reliability of SEIS-3: An instrument for subjective measuring of strength in older adults.

The use of rating of perceived exertion (RPE) has grown substantially, providing a valuable alternative for exercise intensity monitoring, especially for older adults. However, some challenges, such as cross-cultural validity, age-related differences, and reliability issues, necessitate the development of a concise and user-friendly RPE instrument, particularly for strength training in this population. This study aimed to validate the Subjective Effort Induction Scale (SEIS-3), a simplified tool for measuring effort during strength training. SEIS-3 is a graded instrument with three exertion levels: 1) Light effort, 2) Moderate effort, and 3) Strong effort. Twenty seniors, aged 71±7 years, of both genders participated in the study (CEP/Unimontes 2,741,071/2018). We collected maximal isometric voluntary contraction (MIVC) data using a digital dynamometer. Subsequently, participants underwent the initial test, following the three SEIS-3 categories in a randomly assigned order of induced subjective effort. SEIS-3 instrument was evaluated by the approaches:•Linear regression analysis: employed to assess the validity of the instrument.•Intraclass Correlation Coefficient (ICC): employed to assess the reliability of the instrument.SEIS-3 effort categories correlated with MIVC in both hands (R2=0.80, F = 25.596, df=3, p < 0.01 for right hand; R2=0.56, F = 9.132, p < 0.01 for left hand). Test-retest reliability for grip strength across effort categories was excellent (ICC > 0.9). SEIS-3 is a valid and reliable user-friendly tool for accurately assessing and regulating exercise intensity in older adults during strength tasks, benefiting their health, functional capacity, and overall quality of life. This low-cost instrument can help health professionals in their activities.

Floor Maze Test is capable of differentiating spatial navigation between frail and pre-frail institutionalized older persons.

Investigation of the association between physical frailty and cognitive performance through spatial navigation is important to enable the identification of individuals with cognitive impairment and physical comorbidity. Objective: To analyze the association between spatial navigation and frailty in frail and pre-frail institutionalized older adults. Methods: Forty older people of both sexes, aged 60 years or over, residing in four Brazilian Long-Term Care Facilities (LTCFs) participated in this study. The following tests were applied: Mini-Mental State Examination (MMSE), 2.44m Timed Up and Go, Floor Maze Test (FMT), and Fried's frailty criteria. For data analysis, the Mann-Whitney and independent t-tests were used to compare the groups (frail x pre-frail), principal component analysis was used to explore the main variables related to the data variance, and binary logistic regression to estimate associations. Results: There was a significant difference in performance in the FMT immediate maze time (IMT) (p=0.02) and in the delayed maze time (DMT) (p=0.009) between the pre-frail and frail older adults. An association between FMT DMT performance and frailty was found, showing that older people with shorter times on the DMT (better performance) had approximately four times the chance of not being frail (odds ratio - OR=4.219, 95% confidence interval - 95%CI 1.084-16.426, p=0.038). Conclusion: Frailty is associated with impaired spatial navigation ability in institutionalized older adults, regardless of gait speed performance.

A investigação da associação entre fragilidade física e desempenho cognitivo por meio da navegação espacial é importante para possibilitar a identificação de indivíduos com déficit cognitivo e comorbidade física. Objetivo: Analisar a associação entre navegação espacial e fragilidade em idosos institucionalizados frágeis e pré-frágeis. Métodos: Participaram deste estudo 40 idosos de ambos os sexos, com idade igual ou superior a 60 anos, residentes em quatro instituições de longa permanência (ILPI) brasileiras. Foram aplicados os seguintes testes: Miniexame do Estado Mental (MEEM), 2,44m Timed Up and Go, Floor Maze Test (FMT) e os critérios de fragilidade de Fried. Para a análise dos dados, foram utilizados os testes t independente e de Mann-Whitney para comparar os grupos (frágeis x pré-frágeis), foi feita análise de componentes principais para explorar as principais variáveis relacionadas à variância dos dados e regressão logística binária para estimar associações. Resultados: Houve diferença significativa no desempenho do FMT no tempo imediato do labirinto (TIL) (p=0,02) e no tempo posterior do labirinto (TPL) (p=0,009) entre os idosos pré-frágeis e frágeis. Encontrou-se associação entre o desempenho no FMT TPL e fragilidade, mostrando que idosos com menor tempo de TPL (melhor desempenho) tiveram aproximadamente quatro vezes mais chance de não serem frágeis (odds ratio ­ OR=4,219, intervalo de confiança de 95% ­ IC95% 1,084­16,426, p=0,038). Conclusão: A fragilidade está associada à habilidade de navegação espacial prejudicada em idosos institucionalizados, independentemente do desempenho da velocidade da marcha.

Different criteria for body mass index classification for excess weight screening in children aged six to ten years.

OBJECTIVE: To evaluate the agreement between body mass index (BMI) parameters applied to children aged six to ten years in the city of Montes Claros (MG), Brazil with national and international criteria, also calculating their sensitivity and specificity regarding excess weight screening. METHODS: A sample comprising 4151 children aged six to ten years was assessed, with height and body mass determined for BMI calculation. The obtained values were classified according to cutoff points established by the World Health Organization (WHO), International Obesity Task Force (IOTF), Centers for Disease Control and Prevention (CDC), Conde & Monteiro, and a recent local proposal. The agreement index between the mentioned criteria was calculated and thereafter the sensitivity and specificity. RESULTS: The local proposal was proven to be highly consistent in most combinations, especially concerning the excess weight criteria of the World Health Organization (WHO) (k=0.895). Regarding excess weight, the local proposal presented sensitivity and specificity values of 0.8680 and 0.9956, respectively, indicating high BMI discrimination power. CONCLUSIONS: The locally applied BMI parameters for children aged six to ten years represent a valid, highly viable and practical proposal for excess weight screening in this population group, improving professional decision-making in their follow-up.

Body morphology and bone age in girls with obesity and without obesity aged 8 to 15 years: a cross-sectional study / Morfologia corporal e idade óssea em meninas com obesidade e sem obesidade de 8 a 15 anos: um estudo transversal

Introduction: childhood obesity is one of the main public health problems worldwide, leading to health status repercussions and growth and maturation process implications in both children and adolescents. Objective: the aim of this study was to verify body morphology and bone age variations in girls with obesity and without obesity. Methodology: this comprises a cross-sectional study conducted with 140 girls aged 8 to 15 years old, 70 with obesity and 70 without obesity. Hip and waist circumferences, body mass, height and and Body Mass Index (BMI) were determined. For maturation status determinations, bone ages were determined by a left wrist and hand radiography employing the Fels method. Results: the findigs indicate significant correlations between nutritional and maturation statuses (r=0.80; p˂0.01). Girls with obesity presented higher weight and BMI values, larger waist and hip circumferences and more advanced bone age compared to girls without obesity (p˂0.01). The same significant differences (p˂0.01) were noted in the contrasting maturational group analysis, where girls presenting advanced maturation always exhibited the highest parameter values. Conclusion: nutritional status is associated to maturation status, and girls with obesity exhibit more advanced bone age than girls without obesity.

Introdução: a obesidade infantil é um dos principais problemas de saúde pública mundial, com repercussões no estado de saúde e implicações no processo de crescimento e maturação de crianças e adolescentes. Objetivo: verificar a variação da morfologia corporal e da idade óssea em meninas com e sem obesidade. Metodologia: estudo transversal conduzido com 140 meninas de 8 a 15 anos de idade, sendo 70 meninas com obesidade e 70 sem obesidade. Foram mensuradas as circunferências do quadril e da cintura, massa corporal, altura e o Índice de Massa Corporal (IMC). Para o status maturacional foi determinada a idade óssea por meio de radiografia de punho e mão esquerdos pelo Método Fels. Resultados: os resultados apontaram a existência de correlação entre o status nutricional e o status maturacional (r=0,80; p˂0,01). As meninas com obesidade apresentaram maior peso, IMC mais elevado, circunferências maiores e idade óssea mais avançada quando comparadas às meninas sem obesidade (p˂0,01). Na análise dos grupos maturacionais contrastantes as mesmas diferenças se apresentaram com valores significativos (p˂0,01), sendo as meninas avançadas maturacionalmente sempre com valores superiores. Conclusão: o status nutricional apresentou correlação com o status maturacional, e as meninas com obesidade apresentam idade óssea mais avançada que aquelas sem obesidade

Different criteria for body mass index classification for excess weight screening in children aged six to ten years / Diferentes critérios de classificação do índice de massa corporal para o rastreio do excesso de peso em crianças de seis a dez anos

ABSTRACT Objective: To evaluate the agreement between body mass index (BMI) parameters applied to children aged six to ten years in the city of Montes Claros (MG), Brazil with national and international criteria, also calculating their sensitivity and specificity regarding excess weight screening. Methods: A sample comprising 4151 children aged six to ten years was assessed, with height and body mass determined for BMI calculation. The obtained values were classified according to cutoff points established by the World Health Organization (WHO), International Obesity Task Force (IOTF), Centers for Disease Control and Prevention (CDC), Conde & Monteiro, and a recent local proposal. The agreement index between the mentioned criteria was calculated and thereafter the sensitivity and specificity. Results: The local proposal was proven to be highly consistent in most combinations, especially concerning the excess weight criteria of the World Health Organization (WHO) (k=0.895). Regarding excess weight, the local proposal presented sensitivity and specificity values of 0.8680 and 0.9956, respectively, indicating high BMI discrimination power. Conclusions: The locally applied BMI parameters for children aged six to ten years represent a valid, highly viable and practical proposal for excess weight screening in this population group, improving professional decision-making in their follow-up.

RESUMO Objetivo: Analisar a concordância dos parâmetros de índice de massa corporal (IMC) para crianças com idade de seis a dez anos da cidade de Montes Claros/MG com os demais critérios de abrangência nacional e internacional, bem como sua sensibilidade e especificidade no rastreio do excesso de peso. Métodos: Foi utilizada uma amostra de 4.151 crianças de seis a dez anos, sendo mensuradas estatura e massa corporal para a determinação do IMC. Os valores obtidos foram classificados de acordo com os pontos de corte da World Health Organization (WHO), International Obesity Task Force (IOTF), Centers for Disease Control and Prevention (CDC), Conde & Monteiro e uma recente proposta local. Calculou-se o índice de concordância entre os critérios mencionados e, em seguida, a sensibilidade e a especificidade. Resultados: A proposta local mostrou-se altamente concordante na maioria das combinações, principalmente para o excesso de peso com a WHO (k=0,895). Com relação ao excesso de peso, a proposta local apresentou valores de 0,8680 e 0,9956 para a sensibilidade e especificidade respectivamente, mostrando alto poder de discriminação do IMC. Conclusões: Conclui-se que os parâmetros locais de IMC para crianças de seis a dez anos representam uma proposta válida, altamente viável e utilizável para o rastreio do excesso de peso desse grupo populacional, melhorando a tomada de decisão profissional no acompanhamento de tais indivíduos.

Floor Maze Test is capable of differentiating spatial navigation between frail and pre-frail institutionalized older persons / Floor Maze Test é capaz de diferenciar a navegação espacial entre idosos institucionalizados frágeis e pré-frágeis

ABSTRACT. Investigation of the association between physical frailty and cognitive performance through spatial navigation is important to enable the identification of individuals with cognitive impairment and physical comorbidity. Objective: To analyze the association between spatial navigation and frailty in frail and pre-frail institutionalized older adults. Methods: Forty older people of both sexes, aged 60 years or over, residing in four Brazilian Long-Term Care Facilities (LTCFs) participated in this study. The following tests were applied: Mini-Mental State Examination (MMSE), 2.44m Timed Up and Go, Floor Maze Test (FMT), and Fried's frailty criteria. For data analysis, the Mann-Whitney and independent t-tests were used to compare the groups (frail x pre-frail), principal component analysis was used to explore the main variables related to the data variance, and binary logistic regression to estimate associations. Results: There was a significant difference in performance in the FMT immediate maze time (IMT) (p=0.02) and in the delayed maze time (DMT) (p=0.009) between the pre-frail and frail older adults. An association between FMT DMT performance and frailty was found, showing that older people with shorter times on the DMT (better performance) had approximately four times the chance of not being frail (odds ratio - OR=4.219, 95% confidence interval - 95%CI 1.084-16.426, p=0.038). Conclusion: Frailty is associated with impaired spatial navigation ability in institutionalized older adults, regardless of gait speed performance.

RESUMO. A investigação da associação entre fragilidade física e desempenho cognitivo por meio da navegação espacial é importante para possibilitar a identificação de indivíduos com déficit cognitivo e comorbidade física. Objetivo: Analisar a associação entre navegação espacial e fragilidade em idosos institucionalizados frágeis e pré-frágeis. Métodos: Participaram deste estudo 40 idosos de ambos os sexos, com idade igual ou superior a 60 anos, residentes em quatro instituições de longa permanência (ILPI) brasileiras. Foram aplicados os seguintes testes: Miniexame do Estado Mental (MEEM), 2,44m Timed Up and Go, Floor Maze Test (FMT) e os critérios de fragilidade de Fried. Para a análise dos dados, foram utilizados os testes t independente e de Mann-Whitney para comparar os grupos (frágeis x pré-frágeis), foi feita análise de componentes principais para explorar as principais variáveis relacionadas à variância dos dados e regressão logística binária para estimar associações. Resultados: Houve diferença significativa no desempenho do FMT no tempo imediato do labirinto (TIL) (p=0,02) e no tempo posterior do labirinto (TPL) (p=0,009) entre os idosos pré-frágeis e frágeis. Encontrou-se associação entre o desempenho no FMT TPL e fragilidade, mostrando que idosos com menor tempo de TPL (melhor desempenho) tiveram aproximadamente quatro vezes mais chance de não serem frágeis (odds ratio - OR=4,219, intervalo de confiança de 95% - IC95% 1,084-16,426, p=0,038). Conclusão: A fragilidade está associada à habilidade de navegação espacial prejudicada em idosos institucionalizados, independentemente do desempenho da velocidade da marcha.

Acute response of prefrontal cortex in institutionalized older adults undergoing a single exergames session.

Virtual reality-based exercise (exergames) improves cognition of the elderly but the neurophysiological effects are poorly understood. The hypothesis herein established is that an ultrafast neurophysiological adaptation occurs in prefrontal cortex of elderly after completion of a single exergames session. To reinforce the aforementioned hypothesis, individuals living in a Long-Term Care Home (LTCH) participated in the study and were randomly allocated into two groups (Virtual Reality Group, VRG, n = 5; and Active Control Group, ACG n = 5). VRG performed six exercises with exergames and ACG performed exercises with the same VRG movements but with no virtual reality. Assessment of frontal cortical activity at rest and during cognitive testing via electroencephalographic activity (EEG) was performed before and immediately after the intervention. Significant decrease in relative power of EEG (RPEEG) Beta brainwave (-29 ± 18%) in the left prefrontal cortex of VRG compared to ACG (4 ± 9%) (p = 0.007). A slight improvement on semantic fluency in VRG (ES=0.21) was noted. An ultrafast prefrontal cortical adaptation may occur as an effect of a single exergames session, causing a small improvement on cognition of institutionalized elderly.

Efeito do treinamento resistido na sobrevida de camundongos c57bl/6 com caquexia associada ao melanoma cutâneo / Effect of resisted training on survival of c57bl / 6 mice with cachexia associated with cutaneous melanoma

OBJETIVO: O objetivo desse estudo foi verificar o efeito do treinamento resistido na sobrevida de camundongos C57BL/6 com caquexia associada ao melanoma cutâneo. MATERIAL E MÉTODOS: A amostra foi constituída por 64 (camundongos C57BL/6 fêmeas, com idade entre 10 e 12 semanas, com cerca de 50 ± 5 gramas de peso corporal. Os camundongos foram distribuídos aleatoriamente em quatros grupos: i. camundongos controle, com indução de tumor, inativos fisicamente (Controle, n = 16); ii. camundongos submetidos ao treinamento resistido diário somente antes da indução tumoral (Treino 1, n = 16); iii. camundongos submetidos ao treinamento resistido diário antes e após da indução tumoral (Treino 2, n = 16); iv. camundongos submetidos ao treinamento resistido diário após a indução tumoral e apresentado quadro caquético (Treino 3, n = 16). No procedimento para treinamento resistido (TR) com choque, foi utilizada uma escada com 110 cm de altura, 18 cm de largura, 2 cm entre os degraus e 80 graus de inclinação. No procedimento para TR com choque, foi utilizada uma escada 110 cm de altura, 18 cm de largura, 2 cm entre os degraus e 80 graus de inclinação. O exercício resistido baseia-se na subida dos camundongos. Na plataforma de saída, aplicava-se um choque elétrico como estímulo para subir as escadas, nesta etapa era aplicada o choque nas quatro patas do animal com uma tensão elétrica de 20 volts a uma frequência de 45 Hertz durante seis séries de oito repetições, cada uma com noventa segundos de intervalo entre as séries. Os grupos de camundongos foram submetidos a acompanhamento por no máximo 15 dias após o diagnóstico da caquexia a fim de comparar a sobrevida geral relacionada ao câncer entre os grupos de estudo. As curvas de sobrevivência de KaplanMeier foram estimadas para cada evento e as curvas dos diferentes grupos foram comparadas usando o teste de Log-rank. O tempo de sobrevida proposta foi de 25 dias após inoculação. RESULTADOS: Os resultados apresentados nesse estudo mostraram que não houve diferença significativa (p <0,05) entre as propostas de treino. CONCLUSÃO: Não houve diferença na sobrevida de animais com caquexia associada ao modelo tumoral singênico de melanoma cutâneo com intervenção de exercício resistido ou sedentários.

OBJECTIVE: The objective of this study was to verify the effect of resistance training on the survival of C57BL / 6 mice with cachexia associated with cutaneous melanoma. MATERIAL AND METHODS: The sample consisted of 64 (female C57BL/6 mice, aged between 10 and 12 weeks, with approximately 50 ± 5 grams of body weight. The mice were randomly distributed into four groups: i. control mice, with tumor induction, physically inactive (Control, n = 16); ii. mice submitted to daily resistance training only before tumor induction (Training 1, n = 16); iii. Mice submitted to daily resistance training before and after tumor induction (Training 2, n = 16); iv. Mice submitted to daily resistance training after tumor induction and presented a cachectic condition (Training 3, n = 16). In the resistance training procedure (RT) with shock, a 110 cm high, 18 cm wide, 2 cm between the steps, and 80 degrees inclination ladder was used. In the procedure for shock resistance training (TR), a ladder 110 cm high, 18 cm wide, 2 cm between the rungs, and 80 degrees of inclination was used. The resisted exercise is based on the climbing of the mice. On the exit platform, an electric shock was applied as a stimulus to climb the stairs. In this step, the shock was applied to the four legs of the animal with an electric voltage of 20 volts at a frequency of 45 Hertz during six series of eight repetitions, each with ninety-seconds intervals between the series. The mice groups underwent follow-up for no more than 15 days after diagnosis of cachexia to compare overall cancer-related survival between the study groups. Kaplan-Meier survival curves were estimated for each event, and the curves of the different groups were compared using the Log-rank test. The proposed survival time was 25 days after inoculation. RESULTS: The results presented in this study showed no significant difference (p <0.05) between the training proposals. CONCLUSION: There was no difference in animals' survival with cachexia associated with the syngeneic melanoma skin tumor model with either resistance exercise or sedentary intervention.

Efeitos do exercício resistido sobre o tecido adiposo marrom em camundongos C57BL/6 / Effects of resisted exercise on brown adipous tissue in C57BL/6 mice

OBJETIVO: Verificar os efeitos do treinamento de escada e atividade física na histomorfometria do tecido adiposo marrom em camundongos C57BL/6. MATERIAIS E MÉTODOS: Amostra composta por 16 camundongos, divididos aleatoriamente: controle (n=4), exercício de escada com estímulo elétrico (n=4), exercício de escada (n=4) e atividade física em ambiente enriquecido (n=4). Grupo de atividade física em ambiente enriquecido foi realizada em caixa com brinquedos. Grupo exercício de escada e escada com estímulo elétrico foram realizadas com escada vertical. Com a utilização da escada os animais realizaram 6 séries, 8 repetições com intervalos de 90 segundos entre séries, sendo 10 sessões. No exercício de escada com estimulo elétrico, o animal foi estimulado a subir usando uma placa de aço na base da escada, com uma corrente elétrica de 20V de intensidade e 45 hz de frequência. A coleta de tecido adiposo marrom foi feita na região escapular e manchado em Hematoxilina-Eosina (HE). O nível de significância das análises era 95% (p < 0.05). RESULTADOS: Não houve diferença significativa no comparativo do tamanho da célula de TAM em comparação com o tecido recolhido dos camundongos dos quatro grupos. CONCLUSÃO: A atividade física e o exercício resistido não promoveram diferenças morfometricas no TAM dos camundongos C57BL/6.

OBJECTIVE: To verify the effects of stair training and physical activity on brown adipose tissue histomorphometry in C57BL / 6 mice. MATERIALS AND METHODS: Sample composed of 16 mice, randomly divided: control (n = 4), stair exercise with electrical stimulus (n = 4), stair exercise (n = 4) and physical activity in an enriched environment (n = 4). A Group of physical activity in an enriched environment was performed in a box with toys. Ladder exercise group and ladder with electrical stimulus were performed with vertical ladder. With the ladder's use, the animals performed six sets, eight repetitions with 90-second intervals between sets, with ten sessions. In the stairway exercise with electrical stimulation, the animal was encouraged to climb using a steel plate at the base of the stairs, with an electric current of 20V intensity and 45Hz frequency. Brown adipose tissue collection was performed in the scapular region and stained with Hematoxylin-Eosin (HE). The level of significance of the analyzes was 95% (p <0.05). RESULTS: There was no significant difference when comparing the TAM cell size compared to the tissue collected from the mice in the four groups. CONCLUSION: Physical activity and resistance exercise did not promote morphometric differences in the TAM of C57BL/6 mice.

Acute effects of 2D exergame on cognitive functions and frontal cortical activity / Efeitos agudos do exergame 2D nas funções cognitivas e na atividade do córtex frontal / Efectos agudos del exergame 2D sobre las funciones cognitivas y la actividad cortical frontal

ABSTRACT This study aims to evaluate the effect of an exercise with a 2D virtual reality session on the cognition and cortical activity of young males. This is a randomized controlled trial with ten men aged 18 to 23 years. They were randomly assigned under two conditions: 1) exercise session with 2D virtual reality games and 2) control, which consisted of watching a two-episode video of a comic TV show. Cognition and frontal cortical activity were assessed immediately before and after the intervention, using the Mindset, performing the Digit Span Test, semantic verbal fluency, and executive function. Executive function improved with the exergame session (p=0.025). Exergames partially promote an immediate increase in the executive function of young people.

RESUMO Este estudo tem como objetivo avaliar o efeito de um exercício com sessão de realidade virtual 2D na cognição e atividade cortical de jovens do sexo masculino. Trata-se de um ensaio controlado randomizado com dez homens de 18 a 23 anos. Os participantes foram distribuídos aleatoriamente em duas condições: 1) sessão de exercícios com jogos de realidade virtual 2D e 2) controle, que consistia em assistir a um vídeo de dois episódios de um programa de TV. A cognição e a atividade cortical frontal foram avaliadas imediatamente antes e após a intervenção, por meio do Mindset, realização do Digit Span Test, fluência verbal e função executiva. A função executiva melhorou com a sessão de exergame (p=0,025). Exergames promove parcialmente um aumento imediato na função executiva dos jovens.

RESUMEN Este estudio tiene como objetivo evaluar el efecto de un ejercicio con sesión de realidad virtual 2D sobre la cognición y la actividad cortical de varones jóvenes. Este es un ensayo controlado aleatorio con diez hombres de 18 a 23 años. Fueron asignados aleatoriamente bajo dos condiciones: 1) sesión de ejercicios con juegos de realidad virtual 2D y 2) control, que consistía en ver dos episodios de un programa de televisión. Se evaluó la cognición y la actividad cortical frontal inmediatamente antes y después de la intervención, utilizando el Mindset, realizando el Digit Span Test, la fluidez verbal y la función ejecutiva. La función ejecutiva mejoró con la sesión de exergame (p=0.025). Exergames promueven parcialmente un aumento de la función ejecutiva de los jóvenes.

The effect of dual-task training on cognition of people with different clinical conditions: An overview of systematic reviews.

BACKGROUND: The number of patients with cognitive impairment increases as the population becomes older. This perspective may persist a burden on health care systems unless considered new options of prevention and treatment. The aim of this meta-synthesis is to analyze different systematic reviews on the effectiveness of dual-task training (DTT) on cognition and motor function of different people. METHODS: A systematic search of systematic reviews published until October 2019 was conducted in PubMed/Medline, Scopus and Cochrane databases addressing studies which investigated the effect of DTT compared to control or other intervention on cognitive functions of healthy or unhealthy individuals. Three steps were followed to retrieve studies: reading title, abstract and full text. Checklist Assessing the Methodological Quality of Systematic Reviews (AMSTAR) was used to assess the quality of selected articles. RESULTS: In terms of quality of evidence, according to AMSTAR, 62.5 % of the reviews were rated as being "low" and 37.5 % were graded as "moderate" quality. Two main themes were identified among the studies' outcomes: Improvement on mobility performance or postural stability; and beneficial effect on cognitive function. In terms of effect size, there were reported an important variation, having more significant results for findings involving mobility and modest effect for findings regarding cognitive function. CONCLUSION: People with different clinical conditions could benefit from dual-task training. The benefits may encompass general cognitive functions, memory, physical performance, gait and balance, to name a few aspects.

Efeitos da atividade física na histomorfometria muscular esquelética de modelo tumoral murino de caquexia / Effects of physical activity on skeletal muscle histomorphometry of murine cachexia tumor model

A caquexia associada ao câncer (CAC) é uma síndrome paraneoplásica que ocorre com indivíduos com câncer que é caracterizada pela diminuição gradual de tecidos muscular esquelética e de tecido adiposo, promovendo um quadro de consumação física do indivíduo. A ocorrência de CAC determina de forma significativa a uma pior qualidade de vida e de sobrevida de indivíduos com câncer. A CAC não pode ser revertida pelo amparo nutricional convencional. Tratamentos não-farmacológicos empregados para a CAC tem reportado a realização de atividade física para possibilitar adaptações neurais e de hipertrofia muscular em indivíduos com a síndrome. OBJETIVO: Verificar os efeitos da atividade física em ambiente enriquecido na histomorfometria da musculatura esquelética de camundongos C57BL/6 submetidos ao modelo tumoral murino de caquexia associada ao câncer (CAC). MÉTODOS: Foram utilizados 38 camundongos C57BL/6 fêmeas, distribuídos aleatoriamente nos grupos de estudo. Todos os animais foram submetidos ao modelo tumoral murino singênico de Melanoma Cutâneo (MTMSMC) com a inoculação subcutânea de células B16F10. Os grupos de estudo são animais do experimento diagnostico CRC (n = 12), animais sedentários (n = 11) e animais submetidos à prática de atividade física em ambiente enriquecido (n = 15). O seguimento do estudo ocorreu por um período de dez dias. Após esse momento, todos os animais foram sacrificados e amostras de tecido muscular esquelético do gastrocnêmio foram submetidas às análises histomorfométricas. RESULTADOS: Os resultados da análise inferencial do peso absoluto e relativo muscular esquelético não diferiram entre os grupos do estudo. Todas as comparações das variáveis apresentaram tamanho do efeito pequeno. A análise histomorfométrica muscular revelou que a área da fibra muscular não diferiu entre os grupos do estudo. Contudo, essa área muscular, apresentou tamanho do efeito pequeno. CONCLUSÃO: Os resultados apresentados mostraram que a realização de atividade física no ambiente enriquecido não influenciou na área da fibra do músculo do gastrocnêmio de camundongos C57BL/6 submetidos ao MTMSMC, associada à CAC.

Cancer-associated cachexia (CAC) is a paraneoplastic syndrome that occurs in individuals with cancer, which is characterized by the gradual decrease in skeletal muscle and fat tissue, promoting an individual's physical consumption. The occurrence of CAC significantly determines a worse quality of life and survival for individuals with cancer. CAC cannot be reversed by conventional nutritional support. Non-pharmacological treatments used for CAC have reported physical activity to enable neural adaptations and muscle hypertrophy in individuals with the syndrome. OBJECTIVE: To verify the effects of physical activity in an enriched environment on the histomorphometry of skeletal musculature of C57BL/6 mice submitted to the murine tumor model of cancer-associated cachexia (CAC). METHODS: 38 female C57BL/6 mice were used, randomly distributed in groups of study. All animals were subjected to the cutaneous murine tumor model of Cutaneous Melanoma (MTMSMC) with subcutaneous inoculation of B16F10 cells. The study groups are CRC diagnostic experiment animals (n = 12), sedentary animals (n = 11) and animals submitted to physical activity in an enriched environment (n = 15). The study was followed up for a period of ten days. After that moment, all animals were sacrificed and samples of skeletal muscle tissue from the gastrocnemius were submitted to histomorphometric analyzes. RESULTS: The results of inferential analysis of absolute and relative skeletal muscle weight did not differ between the study groups. All comparisons of the variables showed a small effect size. Muscle histomorphometric analysis revealed that the muscle fiber area did differ between the study groups. However, this muscular area had a small effect size. CONCLUSION: The results presented showed that physical activity in the enriched environment did not influence the fiber area of the gastrocnemius muscle of C57BL/6 mice submitted to MTMSMC, associated with CAC.

Pre-Exercise Screening Questionnaire: tradução do instrumento de triagem relacionado à COVID-19 / Pre-Exercise Screening Questionnaire: translation of the screening instrument related to COVID-19

A pandemia causada pela doença do coronavírus 2019 (COVID-19) e as medidas de distanciamento social provocaram reduções nos níveis de atividade física das pessoas. A atividade física está associada a uma melhor saúde física e mental, e manter a população ativa durante a pandemia é essencial. No entanto, ainda não se sabe se exercícios podem, em pessoas infectadas, causar uma potencial exacerbação de sintomas da COVID-19. O presente estudo objetivou traduzir o Pre-exercise screening questionnaire (PESQ) para o Português Brasileiro e de Portugal, para facilitar a sua utilização por profissionais ligados ao exercício físico não fluentes na língua inglesa. O PESQ contém sete perguntas diretas sobre os sintomas mais comuns de COVID-19 mais comumente encontrado em adultos e idosos, para orientação segura para prática de exercício físico. A tradução foi feita em 5 etapas: Tradução inicial, tradução cega, revisão da tradução, adequação da língua Portuguesa e ajustes e finalização. As etapas foram realizadas por pesquisadores experientes, com fluência em língua inglesa e nativos em português Brasileiro e de Portugal. No processo de tradução não houve divergências importantes entre os tradutores. A adaptação transcultural foi importante, pois, o português de Portugal difere-se do brasileiro. O instrumento foi devidamente traduzido e pode ser utilizado como ferramenta de screening para os sintomas da COVID-19 por profissionais do exercício durante a pandemia. No momento, o PESQ é a principal ferramenta disponível para prevenir danos relacionados à COVID-19 e a prática de exercícios

The 2019 pandemic caused by coronavirus disease (COVID-19) and measures of social detachment caused reductions in people's physical activity levels. Physical activity is associated with better physical and mental health, and keeping the population active during the pandemic is essential. However, it remains to be determined whether exercise can potentially exacerbate symptoms of COVID-19 in infected people. This study aimed to translate the Pre-exercise screening questionnaire (PESQ) into Brazilian Portuguese and Portugal, to facilitate its use by professionals linked to physical exercise who are not fluent in the English language. The PESQ has seven questions about the most common symptoms of COVID-19 seen in adults and older adults, providing safety to perform exercise. The translation was done in 5 steps: initial translation, blind translation, revision of the translation, adequacy of the Portuguese language and adjustments and finalization. The stages were carried out by experienced researchers, fluent in English and native speakers in Brazilian and Portuguese. There was no relevant disagreement within assessor in the translating procedure. The transcultural adaptation was crucial because Portuguese language varies across Brazil and Portugal. The instrument has been properly translated and can be used as a screening tool for the symptoms of COVID-19 by exercise professionals during the pandemic. Nowadays, the PESQ is the main available tool to prevent burden regarding COVID-19 and exercise practice

Condicionamento Cardiorrespiratório de idosos: há diferença em praticante de exercício físico e não praticantes? / Cardiorespiratory fitness in the elderly: is there a difference in physical activity practitioners and nonpractitioners?

As mudanças no sistema cardiorrespiratório são evidentes durante o processo de envelhecimento. A aptidão cardiorrespiratória (ACR) tem sido considerada um dos principais fatores responsáveis pela perda de independência em idosos. OBJETIVO: verificar a capacidade cardiorrespiratória em idosos praticantes e não praticantes de atividade física sistematizada. MÉTODOS: Trata-se de um estudo com delineamento transversal. A amostra foi composta por 30 idosas, do sexo feminino com idade entre 65 a 75 anos independentes, divididas em praticantes e não praticantes de exercício físico. Definiu-se como critério de exclusão da pesquisa ausência das participantes durante o período de coleta dos dados. Como instrumento de coleta utilizou-se o teste de marcha estacionária para a avaliação cardiorrespiratória. O avaliador conta uma passada de cada vez, sendo que só foram computadas as passadas em que o joelho atinja a altura correta ao nível ponto médio entre a patela e a espinha ilíaca ântero-superior. RESULTADOS: obteve como resultado média de 43,40 ± 10,08 para indivíduos não praticantes de exercício físico, com peso corporal de 59,26 ± 10, 09kg. No entanto, para indivíduos praticantes de exercício físico com peso corporal de 69,73 ± 11,48kg obteve-se média de 43,73 ± 9,29 ciclos completos. CONCLUSÃO: Nessa amostra não houve uma diferença da aptidão cardiorrespiratória em idosos praticantes e não praticantes de exercício físico.

Changes in the cardiorespiratory system are evident during the aging process. Cardiorespiratory fitness (ACR) has been considered one of the main factors responsible for the loss of independence in the elderly. AIM: The goal of this study was to verify the cardiorespiratory capacity in elders practitioners and non-practitioners of systematic physical activity. METHODS: This is a cross-sectional study. The sample consisted of 30 elderly women, female aged between 65 and 75 years independent, divided into practitioners and non-practitioners of physical exercise and the absence of participants during the period of data collection was defined as a criterion for exclusion from the research. As a collection instrument, a stationary gait test was used for cardiorespiratory assessment. The evaluator counts one step at a time, and only the steps in which the knee reaches the correct height at the midpoint between the patella and the anterior superior iliac spine will be computed. RESULTS: obtained an average result of 43.40 ± 10.08 for individuals who did not exercise, with a body weight of 59.26 ± 10, 09kg. However, for individuals practicing physical exercise with a body weight of 69.73 ± 11.48kg, an average of 43.73 ± 9.29 complete cycles were obtained. CONCLUSION: In this sample, there was no difference in cardiorespiratory fitness in elderly practitioners and non-practitioners of physical exercise.

Efeitos do ultrassom terapêutico no ingurgitamento mamário: estudo piloto / Effects of therapeutic ultrasound in mammary engagement: pilot study

INTRODUÇÃO: A amamentação constitui uma importante etapa no processo reprodutivo, oferecendo benefícios tanto para mãe como para a criança. O Ingurgitamento mamário é uma complicação que ocorre do terceiro ao quinto dia de pós-parto. O Ultrassom Terapêutico (UST) é amplamente utilizado, e consiste em um aparelho capaz de produzir energia acústica de alta frequência. OBJETIVO: verificar o efeito agudo do ultrassom no processo terapêutico do ingurgitamento mamário. METODOLOGIA: Estudo transversal, que avaliou a mama e classificou o ingurgitamento, além de realizar avaliação da dor e da percepção subjetiva das mamas. Foi administrado o protocolo com ultrassom terapêutico na frequência de 1Mh, modo pulsado, intensidade/ dose de 0,5w/cm2, ciclo ativo de 20% com tempo de aplicação de 02 minutos por área de radiação efetiva (ERA). Após aplicação, a lactente foi submetida à amamentação e realizada nova avaliação das mamas. RESULTADOS: A amostra foi composta por 4 mulheres entre 20 e 30 anos com quadro de ingurgitamento mamário. O valor inicial do ingurgitamento mamário foi de 2 a mediana e a final foi de 1 a mediana. Em relação à dor mamária, inicialmente foi de 5 mediana e a final 2 a mediana. Em todos os casos analisados houve melhora na dor, na disponibilidade do leite e no aspecto de ingurgitamento da mama. CONCLUSÃO: O ultrassom terapêutico se mostrou eficaz na redução da dor, no aumento da disponibilidade do leite e na melhora do enrijecimento característico do ingurgitamento mamário.

INTRODUCTION: Breastfeeding is an important step in the reproductive process, providing benefits for both mother and child. Breast engorgement is a complication that occurs from the third to the fifth postpartum day. Therapeutic Ultrasound (UST) is widely used, and consists of an apparatus capable of producing high frequency acoustic energy. OBJECTIVE: to verify the acute effect of ultrasound in the therapeutic process of breast engorgement. METHODOLOGY: Cross-sectional study, which evaluated the breast and classified the engorgement, besides evaluating the pain and the subjective perception of the breasts. The protocol with therapeutic ultrasound was administered at a frequency of 1Mh, pulsed mode, intensity / dose of 0.5w / cm2, active cycle of 20% with application time of 02 minutes per effective Radiation Area (ERA). After application, the infant was submitted to breastfeeding and a new breast evaluation was performed. RESULTS: The sample consisted of 4 women between 20 and 30 years of age with breast engorgement. The initial value of breast engorgement was 2 the median and the final value was 1 to median. Regarding breast pain, it was initially 5 median and the final 2 median. In all the analyzed cases there was improvement in pain, milk availability and breast engorgement aspect. CONCLUSION: Therapeutic ultrasound has been shown to be effective in reducing pain, increasing milk availability and improving the stiffness characteristic of breast engorgement.

Comparison of cognitive functions among frail and prefrail older adults: a clinical perspective.

ABSTRACTObjective:To compare cognitive function among frail and prefrail older adults. DESIGN: Cross-sectional clinical study. PARTICIPANTS: Fifty-one non-institutionalized older individuals participated in this study. MEASUREMENTS: Cognitive functions were evaluated through Mini-Mental State Examination (Global Cognition), Digit Span Forward (short-term memory), Digit Span Backward (working memory), Verbal Fluency Test (semantic memory/executive function). Data were compared using parametric and non-parametric bivariate tests. Binary logistic regression was used to test a frailty prediction model. Statistical significance was defined as p ≤ 0.01 to compare groups. In the regression model, the p value was set to be ≤0.05. RESULTS: Statistically significant differences were observed in global cognition, and short-term memory between frail and prefrail individuals (p ≤ 0.01). Global cognition explained 14-19% of frailty's model. CONCLUSION: According to our findings, the evaluation of cognitive functions among older persons with frailty and prefrailty provides important complementary information to better manage frailty and its progression.

Effect of Exercise on Inflammatory Profile of Older Persons: Systematic Review and Meta-Analyses.

BACKGROUND: Inflammatory cytokines and acute phase proteins increase with aging, promoting a chronic low-grade inflammation. Studies have shown a positive effect of exercise on inflammatory markers in older persons. Interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and C-reactive protein (CRP) are the main biomarkers investigated. However, it is unclear if exercise could decrease all these biomarkers. PURPOSE: The aim was to analyze the effect of chronic exercise on IL-6, TNF-α, and CRP levels in older persons. METHODS: Preferred Reporting Items in Systematic Reviews and Meta-analyses guidelines were adopted. Original articles that investigated the effect of chronic exercise on inflammatory profile of the elderly persons were eligible for this review. The databases PubMed, PEDro, EBSCO, and BioMed Central were searched. Three reviewers evaluated each publication for reducing bias. Data about IL-6, TNF-α, and CRP were collected and analyzed. A standardized mean difference based on estimated pooled effect size was calculated considering heterogeneity index (I2) and random effect. RESULTS: Seventy-six studies were retrieved from databases, and 8 of them were analyzed. IL-6 and CRP levels decreased after chronic exercise (overall effect P < .05). CONCLUSION: Regular exercise decreases IL-6 and CRP levels in older persons. The effect of exercise on TNF-α remains unclear.