Skeletal Muscle and Physical Activity in Portuguese Community-Dwelling Older Adults.
J Aging Phys Act
; 24(4): 567-574, 2016 10.
Article
em En
| MEDLINE
| ID: mdl-26964484
ABSTRACT
The aims of this study were to describe age- and sex-related differences in total body skeletal muscle (TB-SM) mass and to determine the variance explained by physical activity (PA). This cross-sectional study included 401 males and 402 females, aged 60-79 years. TB-SM was determined by dual-energy x-ray absorptiometry (DXA) and PA by Baecke questionnaire. Statistical analysis included t test, ANOVAs, Pearson correlations, and multiple regression analysis. TB-SM mass was higher in the youngest age group when compared with the oldest in males and females. Males had greater TB-SM values than females. PA made a significant and positive contribution to the variation in TB-SM, ß = 0.071; p = .016. Sex, height, fat mass, and PA explained 77% of the variance in TB-SM. The oldest cohorts and females had lower TB-SM than the younger cohorts and males. This study suggests that PA exerts a significant role in the explanation of TB-SM.
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Base de dados:
MEDLINE
Assunto principal:
Exercício Físico
/
Músculo Esquelético
/
Sarcopenia
Tipo de estudo:
Observational_studies
/
Prevalence_studies
/
Risk_factors_studies
Limite:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
País/Região como assunto:
Europa
Idioma:
En
Revista:
J Aging Phys Act
Ano de publicação:
2016
Tipo de documento:
Article