RESUMO Introdução: A terapia antirretroviral de alta atividade (HAART) está associada ao surgimento de diversos efeitos adversos na população com HIV/Aids, dentre as quais, a lipodistrofia. Caracterizada pela reorganização anormal de gordura pelo corpo, é um dos efeitos mais relevantes, envolvendo riscos cardiometabólicos e prejuízos na imagem corporal. Objetivo: Analisar a somatotipia e a imagem corporal em pessoas vivendo com HIV/AIDS. Métodos: A amostra foi composta por cinco mulheres (47,8 ± 6,53 anos) em uso da HAART e fisicamente ativas. Foi realizada uma intervenção com o treinamento concorrente e aconselhamento dietético e avaliou-se a conformação corporal pelo somatótipo e a imagem corporal pela escala de silhuetas. Resultados: Não houve diferença na classificação do somatótipo, entretanto, os resultados apontaram diferença significativa para a análise da distância de dispersão entre somatótipos (DDS) na 1ª semana (DDS = 2,63) e 16ª semana de intervenção (DDS = 2,96), quando avaliado pelas médias; e quando avaliado individualmente, verificou-se diferença significativa tanto na DDS quanto na distância espacial entre somatótipos (DES) nos casos 1, na 8ª semana (DDS = 3,20 e DES = 1,01) e 16.a semana (DDS = 2,73); e caso 3, na 1ª semana (DDS = 9,25 e DES = 1,44) e 16ª semana (DDS = 8,06 e DES = 1,37). Quanto à imagem corporal, observou-se a aproximação da imagem atual à imagem ideal (imagem atual inicial = 6; imagem atual final = 5; e imagem ideal inicial e final = 3). Conclusão: O programa de treinamento concorrente associado à orientação nutricional produziu resultados positivos tanto no somatótipo quanto na percepção da imagem corporal das participantes, comprovando sua eficácia no controle da lipodistrofia e na satisfação da imagem corporal do grupo avaliado.
Although vitamin D is related to cardiorespiratory fitness and muscle strength, there is no evidence in the literature about the genetic influence of the response to vitamin D supplementation and improvements in these parameters. Therefore, we evaluate the effect of longitudinal supplementation of vitamin D on parameters of physical fitness in monozygotic twins. In total, 74 participants were included, with a mean age of 25 years, divided into two groups, one group received supplementation with cholecalciferol for 60 days and the other group did not. Cardiorespiratory fitness and muscle strength were measured before and after supplementation through maximal treadmill tests and dynamometry, respectively. Wilcoxon tests were used to compare intragroup results and the Mann–Whitney test to examine intergroup differences. There was an increase in the serum concentration of vitamin D in participants who ingested the supplementation. Cardiorespiratory fitness improved after supplementation through increases in the values of maximum oxygen consumption of 28% (p < .001). Muscle strength in left hand grip increased 18% in participants who received the supplement (p = .007). Sixty days of cholecalciferol supplementation improved cardiorespiratory fitness and upper limb muscle strength.
The aim of this study was to evaluate the differences in the metabolic profile and body composition of monozygotic (MZ) twins concordant and discordant for the practice of physical exercise. The sample consisted of 92 MZ twins (72.5% female and 27.5% male, mean age 25.4 ± 5.69 years), registered with the Brazilian Registry of Twins, residing in Natal, Brazil. Data collection was carried out between the years 2016 and 2018. On day 1, subjects underwent a whole-body fitness evaluation, including measures of weight, height, body composition by Dual-Energy X-ray Absorptiometry and the Cardiorespiratory Exercise Test. On day 2, 10 ml blood samples were collected (overnight fasting) to determine the lipid profile and fasting glucose. The sample was separated into three groups: Active Concordant twins (Concordant A, n = 44 subjects), Inactive Concordant twins (Concordant I, n = 22 subjects) and Discordant pairs for Physical Exercise (Discordant PE, n = 26 subjects). The results demonstrated a difference between the discordant twins for exercise and also between the active versus sedentary groups, indicating a causal effect of exercise on the fat percentage, maximum oxygen consumption (VO2max) and second ventilatory threshold variables. Between groups, a difference was also observed between the groups in ventilatory threshold, very low-density lipoprotein and triglycerides. We concluded that, regardless of genetics, the practice of physical exercise was sufficient to generate alterations in body composition and VO2max in MZ twins, but not in the lipid profile or fasting glucose.
El propósito de este estudio fue investigar la relación de la composición corporal y las variables bioquímicas con el POC, así como observar la tendencia de la heredabilidad. Estudio transversal con gemelos monocigóticos y dicigóticos adultos. Para obtener los valores del POC, la prueba de ejercicio cardiopulmonar fue realizada se realizó un protocolo con sobre cinta rodante. Para la composición corporal, se utilizaron laabsorciometríade energía dual y la antropometría. Para las inferencias, se realizaron la concordancia de Spearman y la prueba de hipótesisMann-Whitney.Los resultados mostraron que lasvariables de composición corporal no se correlacionaron significativamente con el punto óptimo cardiorrespiratorio. El Punto Óptimo Cardiorrespiratorio y las variables bioquímicas en general demostraron una mayor tendencia a ser influenciados por factores ambientales. El comportamiento de las variables de composición corporal demostró una mayor influencia de la heredabilidad.
Background: Although vitamin D is related to cardiorespiratory fitness and muscle strength, there is no evidence in the literature about the genetic influence of the response to the increase in body vitamin D. Therefore, we evaluate the effect of longitudinal supplementation of vitamin D on parameters of physical fitness in monozygotic twins.Methods: In total, 74 participants were included, with a mean age of 25 years, divided into two groups, one group received supplementation with cholecalciferol for 60 days and the other group did not. Cardiorespiratory fitness and muscle strength were measured before and after supplementation, through maximal treadmill tests and dynamometry, respectively. Wilcoxon tests were used to compare intra-group results and the Mann-Whitney test to examine intergroup differences.Results: There was an increase in the serum concentration of vitamin D in participants who ingested the supplementation. Cardiorespiratory fitness improved after supplementation through increases in the values of maximum oxygen consumption of 28% (P <0.001). Muscle strength in right hand grip significantly increased in participants who received the supplement to 33.0 (P = 0.007).Conclusion: 60 days of cholecalciferol supplementation improved cardiorespiratory fitness and upper limb muscle strength.Trial registration: RBR-3qy2f2. Registered 28 March 2016, http://www.ensaiosclinicos.gov.br/rg/RBR-3qy2f2/2
O objetivo do estudo foi desenvolver e validar equação preditiva de massa livre de gordura por bioimpedanciometria para homens da população brasileira. Foram avaliados 203 homens de 20 a 59 anos de idade, divididos aleatoriamente em dois grupos: desenvolvimento (102) e validação cruzada (101). A técnica padrão foi a Abortometria radiológica de dupla energia (DEXA). Teste t pareado, regressão múltipla e plotagem de Bland-Altman foram utilizados para testar a validade do modelo proposto. A equação derivada pelo estudo foi: MLG = 17,57 + 0,348 (Estatura2/Resistência) + 0,513 Massa Corporal – 0,283 Perímetro Abdominal + 0,079 Reatância – 0,038 idade; coeficiente de correlação de concordância – CCC = 0,937; r2= 0,89; erro padrão de estimativa – EPE = 2,55 kg; erro puro – EP = 2,51 kg. Com isso, a nova equação proposta proporciona estimativa válida da massa livre de gordura, sendo recomendada para homens com características semelhantes.
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