Test-retest reliability and agreement of remote home-based functional capacity self-administered assessments in community-dwelling, socially isolated older adults.

Objectives: To determine the test-retest reliability and agreement of home-based functional capacity self-administered assessments in socially isolated older adults. Methods: Fourteen community-dwelling older adults (eight females, 67.9 ± 7.7 years) volunteered for this study. Before testing, participants were screened online for eligibility and received instructional videos explaining test set-up and execution. Participants underwent the 30-second sit-to-standing test, gait speed tests at the usual pace, and timed-up-and-go tests administered 4 weeks apart. For the 30-second sit-to-standing protocol, participants were instructed to repeatedly sit and stand from a chair (with a height of ∼ 43 cm and without armrests) for 30 s, with the number of repetitions recorded. In the gait speed test protocol, participants were instructed to walk at their usual and comfortable pace, with the time taken recorded (seconds). In the timed-up-and-go, participants stood up from a chair, walked as fast as possible for 3 m, circled a marked point, and returned to the chair to sit down, completing the test, with the score recorded (seconds). A trained researcher conducted the scoring virtually via synchronous video. Results: 30-second sit-to-standing, gait speed test, and timed-up-and-go showed excellent mean coefficient of variation values (2.0-4.9), small standard error of measurement (0.08-1.27), excellent intraclass coefficient (0.97-0.99), very strong correlations (0.97-0.99) and good agreement between the two days of testing. Conclusion: Self-administered functional capacity tests performed by older adults at home were reliable with good agreement. Healthcare professionals and older adults should take advantage of simple remote self-administered assessments performed at home to evaluate older adults' health status.

A cross-sectional analysis of risk factors for cardiovascular diseases in older females: association between body fat distribution and physical fitness.

This study aimed to determine whether body fat distribution and physical fitness would be associated with risk factors for cardiovascular diseases (CVDs) in post-menopausal females. Android fat distribution were more likely to have altered total cholesterol (TC), high-density lipoprotein (HDL-C), triglycerides (TG), glycemic levels (GL) body fat percentage (%BF), and body mass index (BMI), and those with inadequate physical fitness showed clear alterations in TC, HDL-C, and TG. Gynoid fat distribution group fared better regarding CVD risk. In conclusion, adequate physical fitness demonstrates a protective factor against CVDs, with the greatest benefit to those with gynoid fat distribution.

Efeitos de um programa de exercícios remoto em ambiente domiciliar na capacidade funcional e a percepção da solidão em idosos socialmente isolados durante a covid-19 / Effects of remote home-based exercise program on functional capacity and perceived loneliness in older adults during COVID-19 lockdown

Resumo Objetivo Determinar os efeitos de um programa de exercício físico remoto realizado em ambiente domiciliar na capacidade funcional e percepção de solidão de idosos socialmente isolados, devido a pandemia da covid-19. Método Vinte e nove (29) idosos foram divididos aleatoriamente em dois grupos: (1) grupo controle (GC) e grupo de exercício em ambiente domiciliar (GEAD). A força muscular dos membros inferiores, a capacidade funcional e a percepção de solidão foram avaliadas no início (pré-teste), 4 semanas e 8 semanas (pós-teste). As avaliações consistiram no teste de sentar e levantar da cadeira (TSL), teste de velocidade de marcha (TVM), Timed Up and Go (TUG) e teste de percepção de solidão (TPS). Resultados O número de repetições durante o TSL foi estatisticamente diferente entre os grupos (GC vs. GEAD, p=0,006 e entre os momentos (Pré vs. 4S vs. 8S, p=0,043.). No teste de TUG, dentro do GC, o momento pré foi estatisticamente menor em relação ao momento de 8 semanas (p<0,021), indicando maior tempo para completar o TUG (pré 12,0±5,9 s vs. 8W 12,7±6,5 s). Essa mesma comparação não foi estatisticamente diferente dentro do GEAD. Não houve diferenças estatísticas no TVM e TPS entre os grupos e entre os momentos. Conclusão O programa de exercício domiciliar melhorou a capacidade funcional após 8 semanas de treinamento, mas a percepção de solidão e o teste de velocidade de marcha não foram afetados pelo programa de exercícios físico remoto em idosos isolados devido à pandemia de covid-19.

Abstract Objective to determine the effects of a simple home-based exercise program on functional capacity and perceived loneliness of older adults in lockdown due to the COVID-19 pandemic. Method Twenty-nine volunteers were randomly divided into two groups: (1) control group (CG); and (2) home-based exercise group (HBEG). Lower limb muscle strength, functional capacity, and perceived loneliness were assessed at baseline (pre-test), 4 weeks, and 8 weeks (post-test) using the Chair Standing Test (CST), Gait Speed Test (GST), Timed Up and Go test (TUG), and Perceived Loneliness Scale (PLS). Results The number of repetitions on the CST differed statistically between the groups (CG vs. HBEP, p=0.006) and among timepoints (Pre vs. 4W vs. 8W, p=0.043.). In the CG group, TUG test completion time was statistically lower at baseline than at 8 weeks (p=0.021) (pre 12.0±5.9 s vs. 8W 12.7±6.5 s). There was no statistical difference in TUG time in the HBEG. No statistical differences were found on the GST and PSL between groups or among timepoints. Conclusion The home-based exercise program improved general functional capacity after 8 weeks of training, but perceived loneliness and gait speed were unchanged in the older adults experiencing lockdown due to the COVID-19 pandemic.

Association between endothelial nitric oxide synthase and the renin-angiotensin-aldosterone system polymorphisms, blood pressure and training status in normotensive/pre-hypertension and hypertensive older adults: a pilot study.

Introduction:Variations in blood pressure (BP) are, in part, genetically determined and some polymorphisms of renin-angiotensin- aldosterone system (RAAS) and synthase of endothelial nitric oxide (eNOS) have been related to hypertension (HT). Conversely, physical exercise is considered a non-pharmacological tool for HT control, treatment, and prevention.Objective: The purpose of this study is to investigate the relationship between eNOS and RAAS polymorphisms, their epistatic interaction, and the respective humoral factors in the BP control in normotensive/pre-hypertension and hypertensive older adults and how this relationship can be modulated by training status (TS) level.Methods:A total of 155 older adults (66.94 ± 6.83 years old) performed the following evaluations: AAHPERD battery test to determine the general functional fitness index (GFFI), systolic and diastolic blood pressure (SBP and DBP), blood collection for DNA extraction, analysis of eNOS gene polymorphisms rs2070744; rs61722009 and rs1799983 and RAAS polymorphisms rs699; rs1799752 and rs5186, and quantification of ACE activity (Fluorimetric Assay) and nitrite concentration (Chemiluminescence Method).Results and Conclusion:Good TS level appears to exert greater influence on SBP for G2 and G3 (G1: 125.79 ± 14.03/ G2: 119.91 ± 11.72/G3: 119.71 ± 10.85) and on NO2 for G3 (G1: 0.42 ± 0.25/ G2: 0.54 ± 0.45/ G3: 0.71 ± 0.52). No associations were observed between eNOS and RAAS polymorphisms, but the epistasis was identified between eNOS polymorphism, rs2070744, and RAAS polymorphism, rs699, revealing a statistically significant interaction (p = .0235) with training score of 0.63, a training test accuracy of 0.61 and a cross-validation consistency of 10/10. This result suggests an increased risk of hypertension.

NOS3 Polymorphisms Can Influence the Effect of Multicomponent Training on Blood Pressure, Nitrite Concentration and Physical Fitness in Prehypertensive and Hypertensive Older Adult Women.

Associations of endothelial nitric oxide synthase (NOS3) polymorphisms with hypertension and response to exercise training in prehypertensive and hypertensive older adult women remain unclear. This study used a multicomponent program (various capacities and motor skills) in the physical training intervention. It analyzed the influence of NOS3 polymorphisms [-786T > C, 894G > T (Glu298Asp), and intron 4b/a] on the response of blood pressure (BP), nitrite concentration, and physical fitness in older adult women. Fifty-two participants aged between 50 and 80 underwent body mass index, BP, 6-min walk, elbow flexion, and sit and stand-up tests to assess physical fitness. The intervention duration was 12 weeks, twice a week, on non-consecutive days. Each session lasted 90 min, maintaining an intensity between 13 (moderate) and 15 (intense), controlled by the Subjective Effort Perception Scale. Plasma/blood samples were collected to assess nitrite concentration and genotyping. The statistical analysis included Fisher's exact test and linear mixed-effects models. The multicomponent training's positive effect was observed with a similar response in both prehypertensive and hypertensive groups. However, carriers of different genotypes demonstrated different responses to training: the decreases in systolic and diastolic BP and increases in nitrite expected from the physical training were smaller in variant genotype than ancestral genotype carriers, especially in the hypertensive group. At positions -786T > C and Glu298Asp, only the ancestral genotypes showed a decrease in diastolic BP (Δ% = -8.1, and Δ% = -6.5, respectively) and an increase on nitrite (Δ% = 19.1, and Δ% = 24.1, respectively) in the hypertensive group. Our results show that the benefits of a multicomponent training intervention seem to be genotype-dependent. It should be possible to consider genetic variants when selecting an exercise treatment intervention.

Acute Exercise, Plasma Nitric Oxide, and Blood Pressure in Older Adults With Different Levels of Training Status: The Influence of Polymorphisms of Endothelial Nitric Oxide Synthase.

BACKGROUND: This study aimed to analyze the acute effect of physical exercise on nitric oxide concentration and blood pressure (BP) in older adults with different levels of training status (TS) and verified the influence of endothelial nitric oxide synthase polymorphisms on these variables. METHODS: A total of 145 older adults were divided into good TS (G1) and weak TS (G2). Participants were subjected to a 40-minute treadmill walk (40%-60% of maximum oxygen consumption) with BP measurements and blood collections for plasma nitrite and oxidative stress biomarkers at pretest and posttest moments. Data were analyzed by 2-way repeated-measures with Sidak post hoc test (P < .05) and multivariate linear analysis. RESULTS: After acute exercise, G2 showed an increase in oxidative stress biomarkers (P = .008), and both groups showed an increase in systolic BP (P < .001). Polymorphisms 894G > T and intron 4b/a had no association with nitrite and BP. However, -786T > C polymorphism showed an association with reduced systolic and diastolic BP (TT genotype) and increased diastolic BP (TC genotype). Higher TS level was also associated with lower BP. CONCLUSION: The maintenance of good TS levels may have a protective effect on cardiovascular risks regardless of the genetic profile.

Comparação da aptidão física de mulheres adultas e idosas de acordo com o histórico de quedas e a prática regular de diferentes modalidades de exercícios físicos / Comparison of the physical fitness of older adult women according to the history of falls and the regular practice of different physical exercises

RESUMO: Objetivos:Comparar a aptidão física de mulheres de acordo com o histórico de quedas e a prática regular de diferentes modalidades de exercícios físicos (treinamento combinado: musculação e resistência aeróbia; treinamento funcional: multicomponente; e treinamento multimodal: duas ou mais modalidades). Métodos: Estudo transversalcom 44 mulheres (idade entre 50 e 80 anos). Foram coletados dados sociodemográficos e sobre o histórico de quedas no último ano, além da avaliação antropométrica e testes motores (flexibilidade, força de membros superiores e inferiores, capacidade aeróbia e agilidade e equilíbrio dinâmico) para avaliar a aptidão física. Na análise estatística, foram realizados o Teste t para amostras independentes e a ANCOVA utilizando idade, índice de massa corporal e tempo de exercício físico como covariáveis. Resultados: As participantes que tiveram ocorrência de quedas no último ano apresentaram piores resultados nos testes de flexibilidade (sentar e alcançar e mãos nas costas), força de membros superiores (flexão de cotovelo) e de membros inferiores (sentar e levantar), bem como capacidade aeróbia (teste de caminhada de seis minutos). Em relação às diferentes modalidades de exercícios físicos, não foi possível observar diferença estatística para nenhuma das variáveis estudadas. Entretanto, resultados satisfatórios de acordo com os valores normativos foram observados nos três grupos. Conclusões: O grupo com histórico de quedas apresentou piores resultados na aptidão física. Em relação às diferentes modalidades de treinamento, não houve diferença entre os grupos para nenhuma variável analisada. Entretanto, observa-se que estas modalidades são importantes para a manutenção de bons níveis de aptidão física no contexto do envelhecimento

ABSTRACT: Objectives: Comparing women's physical fitness according to the history of falls and regular practice of different physical exercises (combined training: strength and aerobic training; functional training: multicomponent; and multimodal training: two or more styles). Methods: A cross-sectional study was conducted with 44 women (aged between 50 and 80 years old). Sociodemographic data and history of falls in the last year were collected, in addition to anthropometric assessment and motor tests (flexibility, upper and lower limb strength, aerobic capacityand agility, and dynamic balance) to assess physical fitness. In the statistical analysis, independent samples t-test and ANCOVA using age, body mass index, and time of physical exercise as covariates were performed. Results: The participants who had falls in the last year presented worse outcomes in the flexibility tests (sit and reach and hands-on-the back), strength tests of upper limbs (elbow flexion), and lower limbs (sit and stand up), as well as aerobic capacity (six-minute walking test). Regarding the different modalities of exercises, it was not possibleto observe statistical differences for any of the variables studied. However, satisfactory results according to the normative values were observed in the three groups. Conclusions: The group with a history of falls had worse outcomes in physical fitness. Regarding the different modalities of training, there was no difference between the groups for any variable analyzed. However, it seems that these modalities are essential to maintain satisfactorylevels of physical fitness in the context of aging.

Acute physical exercise and hypertension in the elderly: a systematic review / Exercício físico agudo e hipertensão arterial em idosos: revisão sistemática / Ejercicio físico agudo e hipertensión arterial en ancianos: revisión sistemática

ABSTRACT As the population ages, health conditions, including hypertension (HT), which is one of the most prevalent diseases in the elderly population, increase. Regular physical exercise has been recommended for hypertensive individuals; however, due to the variety of factors involved in exercise, different acute responses can be achieved. Accordingly, the purpose of this study was to perform a systematic review of the acute effect of physical exercise on blood pressure (BP) in elderly hypertensive patients and of its applicability to the treatment of HT. The search was performed in electronic databases available at Pubmed/Medline, Scopus and Bireme from 2008 to 2018, using the terms "acute physical exercise and hypertension and elderly". A total of 592 articles were found, and after applying the inclusion criteria, 9 articles were selected to form the analysis. All studies evaluated the acute effect of the exercise session and the acute effect of the session after a training period in male and female hypertensive individuals aged 60 years or over. The results indicate that in spite of the heterogeneity of training methods, all intervention protocols used in these studies were effective in promoting BP reduction post exercise when compared to the control group. However, there is still a gap in the reviewed literature regarding the maintenance time of post exercise hypotension (PEH) in the elderly. This information could suggest how long individuals undergoing physical exercise would be "protected" from high blood pressure values and their health risks, and help plan physical exercise sessions at the precise time the hypotensive effect ceases to be present. Level of evidence II; Therapeutic studies-Investigation of treatment results.

RESUMO À medida que a população envelhece, aumentam os agravos de saúde, entre eles, a hipertensão arterial (HA) destaca-se como uma das doenças de maior prevalência na população idosa. O exercício físico regular tem sido recomendado para indivíduos hipertensos, entretanto devido à variedade com que o exercício pode ser realizado, diferentes respostas agudas podem ser obtidas. Sendo assim, o objetivo do presente estudo consistiu em realizar uma revisão sistemática sobre o efeito agudo do exercício físico na pressão arterial (PA) em idosos hipertensos e sua aplicabilidade para o tratamento da HA. A busca foi realizada a partir de bancos de dados eletrônicos disponíveis no Pubmed/Medline, Scopus e Bireme de 2008 a 2018, utilizando os termos "acute physical exercise and hypertension and elderly". Foram encontrados 592 artigos e, após aplicar os critérios de inclusão, foram selecionados nove artigos que fizeram parte da análise, os quais avaliaram o efeito agudo da sessão de exercício e o efeito agudo da sessão após um período de treinamento em indivíduos hipertensos, com idade a partir de 60 anos, de ambos os sexos. Os resultados apontam que apesar da heterogeneidade nos métodos de treinamento, todos os protocolos de intervenção utilizados nesses estudos foram eficazes na promoção da redução da PA pós-exercício quando comparados ao grupo controle. No entanto, ainda existe uma lacuna na literatura revisada em relação ao tempo de manutenção da hipotensão pós-exercício (HPE) em idosos. Essa informação poderia sugerir por quanto tempo os praticantes estariam "protegidos" dos elevados valores pressóricos e seus riscos para a saúde e auxiliar no planejamento das sessões de exercício físico, justamente quando o efeito hipotensor estivesse deixando de se manifestar. Nível de evidência II; Estudos terapêuticos-Investigação dos resultados do tratamento.

RESUMEN A medida que la población envejece, aumentan los agravios de salud, entre ellos, la hipertensión arterial (HA) se destaca como una de las enfermedades de mayor prevalencia en la población anciana. El ejercicio físico regular ha sido recomendado para individuos hipertensos, sin embargo, debido a la variedad con que el ejercicio puede ser realizado, diferentes respuestas agudas pueden ser obtenidas. Siendo así, el objetivo del presente estudio consistió en realizar una revisión sistemática sobre el efecto agudo del ejercicio físico en la presión arterial (PA) en ancianos hipertensos y su aplicabilidad para el tratamiento de la HA. La búsqueda fue realizada a partir de bancos de datos electrónicos disponibles en el Pubmed/Medline, Scopus y Bireme de 2008 a 2018, utilizando los términos "acute physical exercise and hypertension and elderly".Se encontraron 592 artículos y, después de aplicar los criterios de inclusión, se seleccionaron nueve artículos que formaron parte del análisis, los cuales evaluaron el efecto agudo de la sesión de ejercicio y efecto agudo de la sesión después de un período de entrenamiento en individuos hipertensos, con edad a partir de 60 años, de ambos sexos. Los resultados apuntan que, a pesar de la heterogeneidad en los métodos de entrenamiento, todos los protocolos de intervención utilizados en estos estudios fueron eficaces en la promoción de la reducción de la PA postejercicio cuando comparados con el grupo control. Sin embargo, todavía existe un vacío en la literatura revisada con relación al tiempo de mantenimiento de la hipotensión postejercicio (HPE) en ancianos. Esta información podría sugerir por cuánto tiempo los practicantes estarían "protegidos" de los elevados valores presóricos y sus riesgos para la salud y auxiliar en la planificación de las sesiones de ejercicio físico, justamente cuando el efecto hipotensor estuviera dejando de manifestarse. Nivel de evidencia II; Estudios terapéuticos-Investigación de los resultados del tratamiento.

Photobiomodulation 30 min or 6 h Prior to Cycling Does Not Alter Resting Blood Flow Velocity, Exercise-Induced Physiological Responses or Time to Exhaustion in Healthy Men.

PURPOSE: The aim of the current study was to investigate the effects of photobiomodulation therapy (PBMT) applied 30 min or 6 h prior to cycling on blood flow velocity and plasma nitrite concentrations at rest, time to exhaustion, cardiorespiratory responses, blood acid-base balance, and K+ and lactate concentrations during exercise. METHODS: In a randomized, crossover design, 13 healthy untrained men randomly completed four cycling bouts until exhaustion at the severe-intensity domain (i.e., above respiratory compensation point). Thirty minutes or 6 h prior to the cycling trials, participants were treated with PBMT on the quadriceps, hamstrings, and gastrocnemius muscles of both limbs using a multi-diode array (11 cm × 30 cm with 264 diodes) at doses of 152 J or a sham irradiation (with device turned off, placebo). Blood samples were collected before and 30 min or 6 h after treatments to measure plasmatic nitrite concentrations. Doppler ultrasound exams of the femoral artery were also performed at the same time points. Cardiorespiratory responses, blood acid-base balance, and K+ and lactate concentrations were monitored during exercise sessions. RESULTS: PBMT did not improve the time to exhaustion (p = 0.30). At rest, no differences were found in the peak systolic velocity (p = 0.97) or pulsatility index (p = 0.83) in the femoral artery, and in plasma nitrite concentrations (p = 0.47). During exercise, there were no differences for any cardiorespiratory response monitored (heart rate, p = 0.15; oxygen uptake, p = 0.15; pulmonary ventilation, p = 0.67; carbon dioxide output, p = 0.93; and respiratory exchange ratio, p = 0.32), any blood acid-base balance indicator (pH, p = 0.74; base excess, p = 0.33; bicarbonate concentration, p = 0.54), or K+ (p = 0.22) and lactate (p = 0.55) concentrations. CONCLUSIONS: PBMT at 152 J applied 30 min or 6 h before cycling at severe-intensity did not alter resting plasma nitrite and blood flow velocity in the femoral artery, exercise-induced physiological responses, or time to exhaustion in healthy untrained men.

Association of endothelial nitric oxide synthase (eNOS) gene polymorphisms and physical fitness levels with plasma nitrite concentrations and arterial blood pressure values in older adults.

Endothelial nitric oxide synthase (eNOS) gene polymorphisms are associated with reduced eNOS activity and nitric oxide (NO) production leading to an increase in blood pressure (BP). Regular exercise is the main strategy to minimize the deleterious effects of polymorphisms. However, due to the differences that physical exercise can be performed, some controversial results are found. Therefore it seems reasonable to evaluate the training status (TS). Thus, this study aimed to investigate the association of eNOS gene haplotypes and different levels of TS on nitrite concentrations (NO2-) and BP values in older adult. 424 elderly performed the following assessments: General Functional Fitness Index (GFFI) to estimate TS, systolic and diastolic blood pressure (SBP and DBP), blood collection for analysis of NO2- and g.-786T>C, intron 4b/a (VNTR) and 894G>T polymorphisms. Multivariate logistic regression showed that NO2- was influenced by GFFI and 4b/4a Intron 4. Regarding BP, GFFI influenced SBP and DBP, and just intron 4 was associated with variations in DBP. It can be observed that GFFI affected the NO2-, SBP and DBP independently of haplotypes. Therefore, maintenance of good level of TS can overcome the negative influence of genetics factors (intron 4) by increasing NO2- concentration and decreasing BP values.

Regional body composition and muscle strength are related to bone mineral content in elderly / Composição corporal regional e força muscular se relacionam com o conteúdo mineral ósseo em idosos / Composición regional y fuerza muscular si relacionan con él contenido mineral óseo de mayores

ABSTRACT Introduction: The increase, or maintenance, of lean body mass and muscle strength are major determinants of functional independence in the elderly, since they are associated with bone remodeling, and therefore with a reduced risk of falls and fractures. However, the regional relationship between lean body mass/strength and bone mineral content (BMC) has not sufficient theoretical support. Objective: To analyze whether regional body composition and muscle strength are factors potentially related to BMC. Methods: Ten older men (63.3±6.4 years, 169.4±6.8 cm and 79.3±10.5 kg) underwent body composition assessments using dual energy X-ray absorptiometry (DXA) to obtain regional and whole-body lean mass and BMC measures. The subjects also underwent the one-repetition maximum (1RM) test involving flat bench press, 45° leg press, arm curl and knee extension. Regional/whole-body composition and 1RM values were correlated to BMC using Pearson's coefficient (r). The level of significance for the correlations was p ≤0.05, the confidence interval was 95% (Z1-a/2=1.96), and the sample power was 80% (1-b). Results: The flat bench press 1RM was related to BMC in the left (r=0.764) and right (r=0.748) arms, while the 45° leg press 1RM was associated with BMC in the left (r=0.677) and right (r=0.714) legs and trunk (r=0.810), with sample power of 77.7%, 66.8%, 12.7%, 40.4% and 97.0%, respectively. Whole-body BMC was related to abdominal skinfold (r=0.819), lean mass of left arm (r=0.834), left (r=0.845) and right (r=0.868) legs, and whole-body lean mass (r=0.787), with sample power of 98.4%, 99.6%, 99.9%, 100.0% and 90.1%, respectively. Conclusion: The results supported regional lean body mass as a parameter related to BMC, with potential similar to that consistently reported for whole-body lean mass. Results also suggested that muscle strength plays an important role in improving or maintaining regional and whole-body BMC. Level of Evidence II; Development of diagnostic criteria in consecutive patients (with "gold" benchmark standard applied).

RESUMO Introdução: O aumento ou a manutenção, da massa magra e da força muscular são importantes fatores que determinam a independência funcional em idosos, uma vez que se associam ao remodelamento ósseo e, assim, à redução dos riscos de quedas e fraturas. Todavia, a relação regional da massa magra e da força muscular com o conteúdo mineral ósseo (BMC) não apresenta suficiente apoio teórico. Objetivo: Analisar se a composição regional e a força muscular são fatores possivelmente relacionados à BMC. Métodos: Dez homens idosos (63,3 ± 6,4 anos; 169,4 ± 6,8 cm e 79,3 ± 10,5 kg) submeteram-se às avaliações de composição por meio de absorciometria por feixe duplo de raio-X (DEXA) para obter a massa magra e BMC regionais e corporais. Os participantes também foram submetidos ao teste de uma repetição máxima (1RM) com supino horizontal, leg press 45°, rosca direta e extensão de joelho. Os valores de composição regional e corporal e de 1RM foram relacionados ao BMC pelo coeficiente de Pearson (r). O nível de significância para as correlações foi p ≤ 0,05, o intervalo de confiança foi 95% (Z1-α/2=1,96) e o poder da amostra foi 80% (1-b). Resultados: A 1RM no supino horizontal relacionou-se ao BMC do braço esquerdo (r = 0,764) e direito (r = 0,748), assim como 1RM no leg press 45° associou-se ao BMC da perna esquerda (r = 0,677), direita (r = 0,714) e do tronco (r = 0,810), com poder de amostra de 77,7%, 66,8%, 12,7%, 40,4% e 97,0%, respectivamente. O BMC corporal relacionou-se a prega cutânea abdominal (r = 0,819), massa magra do braço esquerdo (r = 0,834), perna esquerda (r = 0,845) e direita (r = 0,868) e massa magra corporal (r = 0,787), com poder de amostra de 98,4%, 99,6%, 99,9%, 100,0% e 90,1%, respectivamente. Conclusão: Os resultados confirmaram a massa magra regional como parâmetro relacionado ao BMC, com potencial similar ao da massa magra corporal e também sugerem que a força muscular tem papel importante no aumento ou manutenção do BMC regional e corporal. Nível de Evidência II; Desenvolvimento de critérios diagnósticos em pacientes consecutivos (com aplicação do padrão de referência).

RESUMEN Introducción: El aumento o mantenimiento de la masa delgada y fuerza son determinantes de independencia funcional de adultos mayores, debido a asociaciones con la modulación ósea y, de la misma forma, con la reducción de riesgos de fracturas y caídas. Sin embargo, las relaciones regionales de masa delgada y fuerza con el contenido mineral óseo (CMO) no tienen suficiente apoyo teórico. Objetivo: Analizar si la composición regional y la fuerza están potencialmente relacionadas con CMO. Métodos: Diez adultos mayores (63,3±6,4 años, 169,4±6,8cm y 79,3±10,5kg) se sometieron a las evaluaciones de composición corporal por absorciometría de doble rayos-X (DXA) que proveyó la masa delgada para y CMO regional y corporal, así como el test de repetición máxima (1RM) en supino horizontal, leg press 45°, flexión de brazo y extensión rodilla. Los valores de la composición regional, corporal y de 1RM se relacionaron con CMO por el coeficiente de Pearson (r). El nivel de significancia fue p≤0,05 para las correlaciones, y el índice de seguridad de 95% (Z1-α/2=1,96) y potencia de muestra de 80% (1-β) para evaluar el poder de la muestra. Resultados: El 1RM en supino horizontal se relacionó con CMO del brazo izquierdo (r=0,764) y derecho (r=0,748), así como el 1RM en leg press 45° se relacionó al CMO de la pierna izquierda (r=0,677), derecha (r=0,714), y tronco (r=0,810), con poder de muestra, respectivamente, de 77,7%, 66,8%, 12,7%, 40,4% y 97,0%. El parámetro CMO corporal se relacionó con el pliegue cutáneo abdominal (r=0,819), masa delgada del brazo izquierdo (r=0,834), pierna izquierda (r=0,845), derecha (r=0,868) y masa delgada corporal (r = 0,787), con poder de muestra, respectivamente, de 98,4%, 99,6%, 99,9%, 100,0% y 90,1%. Conclusión: Los resultados confirman haber relación entre masa delgada regional e CMO, con potencial similar a la masa delgada corporal, sugiriendo también que la fuerza muscular ejerce un papel promisor en el aumento, o manutención, del CMO regional y corporal. Nivel de Evidencia II; Desarrollo de criterios diagnósticos en pacientes consecutivos (con estándar de referencia "oro" aplicado).

Preliminary study about the relationship between estimated training status and RAS polymorphisms on blood pressure and ACE activity in the elderly.

OBJECTIVE: Polymorphisms of the renin angiotensin system (RAS) are associated with increases in blood pressure (BP). Physical exercise has been considered the main strategy to prevent this increase. This study aimed to investigate the relationship between estimated training status (TS), BP and angiotensin-converting enzyme (ACE) activity in elderly people classified as low or high risk to develop hypertension according to genetic profile. METHODS: A total of 155 elderly participants performed the following assessments: general functional fitness index (GFFI), systolic BP (SBP) and diastolic BP (DBP), blood collection for ACE activity and analyses of the RAS polymorphisms. RESULTS: Uncontrolled hypertensive (UHT) participants presented higher values of SBP and DBP compared with normotensive (NT) and controlled hypertensive (CHT) participants. No differences were found in ACE activity and GFFI between groups. In the high risk group, UHT presented higher values of SBP and DBP compared with other groups. CHT presented higher values of SBP compared with NT. Furthermore, UHT presented higher values of ACE activity compared with CHT and lower values of GFFI compared with NT. CONCLUSION: MDA, TIA and TIC genetic combinations were associated with high risk of developing hypertension while the maintenance of good levels of TS was associated with lower BP values and ACE activity.

Photobiomodulation by Led Does Not Alter Muscle Recovery Indicators and Presents Similar Outcomes to Cold-Water Immersion and Active Recovery.

Purpose: The aim of the present study was to investigate the effectiveness of photobiomodulation therapy (PBMT) on muscle recovery based on inflammation (interleukin-10 [IL-10]; tumor necrosis factor-α [TNFα]), muscle damage markers (creatine kinase [CK]; lactate dehydrogenase [LDH]), delay onset muscle soreness (DOMS), and countermovement jump performance (CMJ) after two sprint interval training (SIT) sessions compared with a placebo condition (part-I), as well as to compare the effectiveness of PBMT with active recovery (AR) and cold-water immersion (CWI) (part-II). Methods: Part-I was conducted as a double-blind, randomized and placebo-controlled study and part-II as a parallel-group study. Thirty-six men participated in the studies (12 participants in part-I and 36 participants in part-II). Volunteers performed two SITs interspaced by 24-h (SIT1 and SIT2) to mimic the effect of accumulating 2 consecutive days of SIT. In part-I, only after SIT2, PBMT [Total energy: 600J (300J per leg in 5 spots); wavelength: 660-850 nm] or placebo interventions were performed, while in part-II PBMT (part-I data), AR (15-min; 50% of the maximal aerobic power), or CWI (10-min; 10°C) were carried out, also after SIT2. Blood samples were collected before (i.e., baseline), and 0.5, 1, 24, 48, and 72-h after SIT2, while CMJ and DOMS were measured before, 24, 48, and 72-h after SIT2. Results: In part-I, there were no interactions between PBMT and placebo conditions for any blood markers (P ≥ 0.313), DOMS (P = 0.052), and CMJ (P = 0.295). However, an effect of time was found with increases in LDH, CK, and IL-10 (P ≤ 0.043) as well as a decrease in DOMS at 72-h compared with 24-h (P = 0.012). In part-II, there were no interactions between the PBMT, AR, and CWI groups for any markers at the same moments (P ≥ 0.189) and for the peak and integral values (P ≥ 0.193), for DOMS (P = 0.314) and CMJ (P = 0.264). However, an effect of time was found with an increase in CK and IL-10 (P = 0.003), while DOMS decreased at 48 and 72-h compared with 24-h (P = 0.001). Conclusion: In summary, PBMT had no effect on inflammation, muscle damage, CMJ performance, or DOMS after two consecutive sprint interval training sessions compared to placebo, CWI, and AR strategies.

Exercício Físico Supervisionado, Aptidão Física e Fatores de Risco para Doenças Cardiovasculares em Adultos e Idosos / Supervised Physical Exercise, Physical Fitness and Risk Factors for Cardiovascular Diseases in Adults and Elderly

Objetivos: Verificar se o tempo de prática de exercícios físicos e a supervisão do profissional de Educação Física estão relacionados à melhores resultados na aptidão física e, investigar a relação entre aptidão física e fatores de risco para doenças cardiovasculares (DCVs) em adultos e idosos. Método: 213 participantes (idade entre 50 e 80 anos) realizaram as seguintes avaliações: índice de massa corporal (IMC), perfil lipídico sanguíneo, pressão arterial sistólica (PAS) e diastólica (PAD); e, aptidão física (bateria de testes motores que permitiu o cálculo índice de aptidão funcional geral (IAFG). A análise estatística foi realizada por meio de modelo linear generalizado (IAFG) e Análise de Variância (tempo de prática e supervisão). Resultados: Os dois grupos com tempo de prática de exercícios físicos >6 meses apresentaram melhores resultados no IAFG em comparação ao grupo com prática <6 meses (<6 meses ­ 228 (88,4) pontos; >6 meses sem supervisão - 274,6 (116,9) pontos; > 6 meses com supervisão - 355,2 (80,9) pontos), sendo possível observar resultados melhores para o grupo com supervisão em comparação ao grupo sem supervisão (p<0,05). Observou-se ainda diferenças entre os grupos quanto ao IAFG, para IMC, triglicerídeos, PAS e PAD, sendo que os grupos com maior IAFG apresentaram melhores resultados. Conclusão: Os melhores resultados do IAFG estão associados ao tempo de prática e à supervisão; bons níveis aptidão física estão associados com melhor saúde cardiovascular. Sugerem-se estratégias objetivando melhoras na aptidão física, destacando o profissional de Educação Física para uma prática eficaz e segura. (AU)

Objective: To determine whether the physical exercise time and the supervision by a physical education professional are related to better results in physical fitness. This study further investigated the relationship between physical fitness and risk factors for cardiovascular diseases (CVD) in adults and elderly people. Material and Methods: 213 participants (aged between 50 and 80 years) underwent the following assessments: variables related to risk factors for CVD - body mass index (BMI), blood lipid profile, systolic (SBP) and diastolic blood pressure (DBP); and factors related to physical fitness - motor test battery which allowed calculation of general functional fitness index (GFFI). Statistical analysis was performed using generalized linear model (GFFI) and Analysis of Variance (practice time and supervision). Results: The two groups with physical exercise time >6 months presented better results in the GFFI compared to the group with practice <6 months (<6 months - 228 (88.4) points; >6 months without supervision ­ 274.6 (116.9) points, >6 months with supervision - 355.2 (80.9) points, with better results for the group with supervision compared to the group without supervision (p <0.05). Higher values in GFFI groups were associated with better results in BMI, triglycerides, SBP and DBP. Conclusion: High values of GFFI are associated with the practice time and the supervision, and good levels of physical fitness are associated with better cardiovascular health. Strategies aiming at improvement in physical fitness are suggested, highlighting the physical education professional as a supervisor for an effective and safe practice. (AU)

Association between insufficient practice of physical exercise, walking, and other modalities in healthy elderly / Associação entre a prática insuficiente de exercício físico, caminhada e outras modalidades em idosos saudáveis

ABSTRACT The objective was to compare functional capacity and health parameters of older adults with insufficient practice of physical exercise (IPPE) and older practitioners of different modalities of physical exercise. A cross-sectional study with 113 older people divided into the following groups: G1 - IPPE; G2 - walking practitioners; G3 - walking practitioners associated with one or more modalities; G4 - practitioners of one modality; and G5 - practitioners of two or more modalities. The AAHPERD test battery was used to evaluate functional capacity and the body fat percentage and blood pressure health parameters were analyzed. Analysis of Variance and the Odds Ratio were used. The results show differences at the level of p <0.05 in coordination and strength (G3> G1 and G4), agility (G2, G3 and G5 <G1 and G4), aerobic endurance (G3 and G5 <G1 and G4), the General Functional Fitness Index (G2> G1 and G3, G5> G1 and G4), and diastolic blood pressure (G1> G4 and G5). The practice of walking and practice of two or more physical exercise modalities are associated with better functional capacity in older adults.

RESUMO O principal objetivo foicomparar a capacidade funcional e parâmetros de saúde de idosos com prática insuficiente de exercício físico (IPPE) e idosos praticantes de diferentes modalidades de exercício físico. Trata-se de um estudo transversal, com 113 idosos, divididos nos seguintes grupos: G1 - IPPE; G2 -praticantes de caminhada; G3 - praticantes de caminhada associada a uma ou mais modalidades; G4 - praticantes de uma modalidade; G5 - praticantes de duas ou mais modalidades. A capacidade funcional foi avaliada pela bateria de testes da AAHPERD, e nos parâmetros de saúde foram analisados o percentual de gordura corporal e a pressão arterial. Para análise estatística utilizou-se Anova e OddsRatio. Os resultadosmostraramque diferenças ao nível de p<0,05 foram encontradas na coordenação e resistência de força, (G3 > G1 e G4) na agilidade (G2, G3 e G5 < G1 e G4) na resistência aeróbia (G3 e G5 < G1 e G4); no Índice de Aptidão Funcional Geral (G2 > G1 e G3; G5 > G1 e G4) e na pressão arterial diastólica (G1 > G4 e G5). A prática de caminhada e a prática de duas ou mais modalidades de exercícios físicos estão associadas a melhor aptidão funcional em idosos.

Effect of Multicomponent Training on Blood Pressure, Nitric Oxide, Redox Status, and Physical Fitness in Older Adult Women: Influence of Endothelial Nitric Oxide Synthase (NOS3) Haplotypes.

The purpose of this study was to verify the influence of the genotype or haplotype (interaction) of the NOS3 polymorphisms [-786T>C, 894G>T (Glu298Asp), and intron 4b/a] on the response to multicomponent training (various capacities and motor skills) on blood pressure (BP), nitrite concentration, redox status, and physical fitness in older adult women. The sample consisted of 52 participants, who underwent body mass index and BP assessments. Physical fitness was evaluated by six-minute walk, elbow flexion, and sit and stand up tests. Plasma/blood samples were used to evaluate redox status, nitrite concentration, and genotyping. Associations were observed between isolated polymorphisms and the response of decreased systolic and diastolic BP and increased nitrite concentration and antioxidant activity. In the haplotype analysis, the group composed of ancestral alleles (H1) was the only one to present improvement in all variables studied (decrease in systolic and diastolic BP, improvement in nitrite concentration, redox status, and physical fitness), while the group composed of variant alleles (H8) only demonstrated improvement in some variables of redox status and physical fitness. These findings suggest that NOS3 polymorphisms and physical training are important interacting variables to consider in evaluating redox status, nitric oxide availability and production, and BP control.

Association between demographic and socioeconomic conditions with exercise practice and physical fitness in community projects participants aged 50 years or more in Ribeirão Preto, São Paulo. / Associação entre condições demográficas e socioeconômicas com a prática de exercícios e aptidão física em participantes de projetos comunitários com idade acima de 50 anos em Ribeirão Preto, São Paulo.

OBJECTIVE:: To investigate the association between both demographic and socioeconomic conditions with physical fitness and regular practice of physical exercises in participants of community projects, supervised by a physical education teacher. This enabled to investigate whether the adoption of an active lifestyle depends only on the personal choice or has any influence of socioeconomic factors. METHODS:: 213 individuals aged over 50 years joined the study, and provided information about their socioeconomic status (age, gender, education/years of study, and income); usual level of physical activity (ULPA); and physical fitness, by a physical battery tests which allowed the calculation of general functional fitness index (GFFI). RESULTS:: The generalized linear model showed that participants ranked in the highest GFFI groups (good and very good) had more years of study and higher income (p < 0.05). The multiple linear regression model complements the previous analysis, demonstrating the magnitude of the change in the GFFI in association with the years of study (group > 15), income (all groups) and age (p < 0.05). By means of analysis of variance, a difference between the groups was verified and longer practice of exercises (> 6 months) were also associated with education and income (p < 0.05); among the groups with exercise practice whether greater than or equal to six months, that supervised showed better results in the GFFI (p < 0.05). CONCLUSION:: The association between variables strengthens the hypothesis that adherence and maintenance of physical exercise might not be only dependent of individual's choice, but also the socioeconomic factors, which can influence the choice for any active lifestyle.

Associação entre condições demográficas e socioeconômicas com a prática de exercícios e aptidão física em participantes de projetos comunitários com idade acima de 50 anos em Ribeirão Preto, São Paulo / Association between demographic and socioeconomic conditions with exercise practice and physical fitness in community projects participants aged 50 years or more in Ribeirão Preto, São Paulo

RESUMO: Objetivo: Verificar a associação entre condições demográficas e socioeconômicas com a aptidão física e a prática regular de exercícios físicos supervisionados em participantes de projetos comunitários, possibilitando investigar se a adoção de um estilo de vida ativo depende apenas da escolha pessoal ou sofre influência de fatores socioeconômicos. Métodos: 213 indivíduos com idades acima de 50 anos com informações sobre condição socioeconômica (idade, sexo, escolaridade/anos de estudos e renda); nível habitual de atividade física; e aptidão física por meio de testes motores que permitiram o cálculo do Índice de Aptidão Funcional Geral (IAFG). Resultados: O modelo linear generalizado de comparação de grupos evidenciou que os participantes classificados nos grupos de IAFG mais elevado (bom e muito bom) apresentaram maiores escolaridade e renda (p < 0,05). O modelo de regressão linear complementa a análise anterior, evidenciando a magnitude da modificação da pontuação do IAFG na associação com os anos de estudos (grupo ≥ 15), a renda (todos os grupos) e a idade (p < 0,05). Pela Análise de Variância, verificou-se diferença entre os grupos e, com isso, associação entre maior tempo de prática de exercícios (> 6 meses) com a escolaridade e a renda; entre os grupos com prática de exercícios igual ou superior a seis meses, o grupo supervisionado apresentou os melhores resultados no IAFG (p < 0,05). Conclusão: A associação entre as variáveis fortalece a hipótese de que a adesão e manutenção da prática de exercícios podem não ser dependentes apenas da escolha do indivíduo, mas também de fatores socioeconômicos que podem influenciar a escolha pelo estilo de vida ativo.

ABSTRACT: Objective: To investigate the association between both demographic and socioeconomic conditions with physical fitness and regular practice of physical exercises in participants of community projects, supervised by a physical education teacher. This enabled to investigate whether the adoption of an active lifestyle depends only on the personal choice or has any influence of socioeconomic factors. Methods: 213 individuals aged over 50 years joined the study, and provided information about their socioeconomic status (age, gender, education/years of study, and income); usual level of physical activity (ULPA); and physical fitness, by a physical battery tests which allowed the calculation of general functional fitness index (GFFI). Results: The generalized linear model showed that participants ranked in the highest GFFI groups (good and very good) had more years of study and higher income (p < 0.05). The multiple linear regression model complements the previous analysis, demonstrating the magnitude of the change in the GFFI in association with the years of study (group > 15), income (all groups) and age (p < 0.05). By means of analysis of variance, a difference between the groups was verified and longer practice of exercises (> 6 months) were also associated with education and income (p < 0.05); among the groups with exercise practice whether greater than or equal to six months, that supervised showed better results in the GFFI (p < 0.05). Conclusion: The association between variables strengthens the hypothesis that adherence and maintenance of physical exercise might not be only dependent of individual's choice, but also the socioeconomic factors, which can influence the choice for any active lifestyle.

Training Status as a Marker of the Relationship between Nitric Oxide, Oxidative Stress, and Blood Pressure in Older Adult Women.

The purpose of this study was to evaluate the influence of functional fitness and oxidative capacity on the nitric oxide concentration associated with hemodynamic control in older adult women. The sample consisted of 134 women (65.73 ± 6.14 years old). All subjects underwent a physical examination to assess body mass index, waist-hip ratio, body fat measurement by dual energy X-ray absorptiometry, and blood pressure (BP). Training status (TS) was evaluated by indirect determination of maximal oxygen uptake by a treadmill test using Balke protocol modified for older adults. Functional fitness was also evaluated through a "Functional Fitness Battery Test" to determine the general fitness functional index (GFFI). All participants were separated according to the functional fitness (TS1, very weak and weak; TS2, regular; TS3, good and very good). Plasma blood samples were used to evaluate prooxidant and antioxidant activity and nitrite and nitrate concentrations. The general results of this study showed that good levels of TS were related to lower levels of lipoperoxidation and protein damage, higher levels of antioxidant, and higher concentration of nitrite and nitrate. This combination may be responsible for the lower levels of BP in subjects with better TS.

Influence of training status and eNOS haplotypes on plasma nitrite concentrations in normotensive older adults: a hypothesis-generating study.

The purpose of this study was to evaluate the relationship between 3 eNOS gene polymorphisms and training status (TS) in affecting plasma nitrite concentration (NO2) in normotensive adults over 50 years old. Resting blood pressure (BP) was measured in all participants (n = 101). Plasma was taken to analyze: lipid profile, nitrite concentration (NO2) and lipid peroxide levels (T-BARS). Also, genomic DNA was extracted from plasma for genotyping NOS3 polymorphisms (-786T>C; 894G>T; and VNTR in intron 4). TS was determined by one-mile walk test and Functional Fitness Test Battery from AAHPERD (TS1-regular TS; TS2-good TS; and TS3-very good TS). BP was not influenced by TS, but NO2 was 15% higher in TS3 (123 ± 27 nM) compared to TS-2 (106 ± 22 nM). No differences were found in plasma NO2 in the haplotype analyses. However, the presence of the C allele (T-786C) and ASP allele (Glu298Asp) was found to enhance the correlation between TS and NO2 levels (r = 0.492 in C/4b/ASP haplotype and r = 0.855 in C/4a/ASP haplotype). This study thus identifies NOS3 polymorphism-dependent sensitivity to the effects of physical training on plasma NO2. Maintenance of good levels of training status, in carriers of C allele for T-786C polymorphism, combined with ASP allele for Glu298Asp polymorphism, may result in an increase in the NO2 plasma concentrations, which may reflect improved NO bioavailability in older adult normotensive individuals.