de Lira Claudio, Vargas Valentine, Silva Wallace, Bachi André, Vancini Rodrigo, Andrade Marilia
Laboratório de Avaliação do Movimento Humano, Faculdade de Educação Física e Dança, Universidade Federal de Goiás, Goiânia 74690-900, Brazil.
Departamento de Fisiologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04023-062, Brazil.
Sports (Basel). 2019 Jan 10;7(1):19. doi: 10.3390/sports7010019.
Exercise has been suggested for older adults. However, there is no consensus whether exercising older adults present better strength levels and body composition indexes compared with inactive counterparts. Our aim was to compare absolute and relative isokinetic muscular knee strength and body composition between exercising and non-exercising older women. Exercising (n = 20) and non-exercising (n = 21) groups were evaluated for body mass index (BMI), body composition, and isokinetic muscular knee strength. BMI ( = 0.005), total body mass ( = 0.01), fat mass ( = 0.01), and fat mass percentage ( = 0.01) were higher in non-exercising women, and the lean mass percentage was lower in the non-exercising group ( = 0.01). Isokinetic extensor and flexor knee muscle strength for dominant limbs presented higher peak torque values when corrected for total body mass (Nm·kg) in the exercising group ( < 0.05). Exercising older women presented better body composition and higher strength relative to total body mass, but not maximum absolute strength.
已有建议鼓励老年人进行锻炼。然而，对于与不锻炼的同龄人相比，锻炼的老年人是否具有更好的力量水平和身体成分指标，目前尚无共识。我们的目的是比较锻炼和不锻炼的老年女性之间的绝对和相对等速肌肉膝关节力量以及身体成分。对锻炼组（n = 20）和不锻炼组（n = 21）的体重指数（BMI）、身体成分和等速肌肉膝关节力量进行了评估。不锻炼女性的BMI（P = 0.005）、总体重（P = 0.01）、脂肪量（P = 0.01）和脂肪量百分比（P = 0.01）更高，而不锻炼组的瘦体重百分比更低（P = 0.01）。当根据总体重进行校正（Nm·kg）时，锻炼组优势肢体的等速伸膝和屈膝肌肉力量呈现出更高的峰值扭矩值（P < 0.05）。与总体重相比，锻炼的老年女性具有更好的身体成分和更高的力量，但不是最大绝对力量。
