Silva Cristiane R, Saraiva Bruno, Nascimento Dahan D C, Oliveira Samuel C, Neto Ivo Sousa, Valduga Renato, Santos Nayara G, Tibana Ramires A, Prestes Jonato, Willardson Jeffrey M, Pereira Guilherme B
Programa de Pós-Graduação em Educação Física, Universidade Católica de Brasília, Brasília, DF, BRASIL.
Centro Universitário do Distrito Federal, Brasília, DF, BRASIL.
Int J Exerc Sci. 2018 Jun 1;11(2):844-855. doi: 10.70252/WYJH9813. eCollection 2018.
The aim of the present study was to compare differences in heart rate response following a treadmill exercise test in elderly obese women categorized into groups based on relative handgrip strength. Eighty-eight obese elderly women who were between the ages of 60 and 87 participated in the study and were categorized and enrolled to one of two groups based on lower (< 1.51 m2) or higher (≥ 1.51 m2) relative handgrip strength, respectively. The heart rate recovery in the first and second minutes following the treadmill exercise test and the chronotropic index were compared between groups. The higher relative handgrip strength group presented a significantly higher peak heart rate during exercise and a quicker heart rate recovery following exercise versus the lower relative handgrip strength group (<0.05). Furthermore, there was a tendency (=0.059) toward a significantly greater chronotropic index in the higher versus the lower relative handgrip strength group. In conclusion, elderly women with greater relative handgrip strength also demonstrated a better heart rate response during and following exercise, possibly indicating better autonomic balance. The relative handgrip strength might be an important and inexpensive tool for the elderly obese women to indirect assess cardiovascular health
本研究的目的是比较根据相对握力分为不同组别的老年肥胖女性在进行跑步机运动试验后心率反应的差异。88名年龄在60至87岁之间的肥胖老年女性参与了该研究，并分别根据较低（<1.51 m²）或较高（≥1.51 m²）的相对握力被分类并纳入两组之一。比较了两组在跑步机运动试验后第一分钟和第二分钟的心率恢复情况以及变时指数。与相对握力较低的组相比，相对握力较高的组在运动期间表现出显著更高的心率峰值，并且运动后心率恢复更快（<0.05）。此外，相对握力较高的组与相对握力较低的组相比，变时指数有显著更高的趋势（=0.059）。总之，相对握力较大的老年女性在运动期间和运动后的心率反应也更好，这可能表明自主神经平衡更好。相对握力可能是老年肥胖女性间接评估心血管健康的一种重要且廉价的工具。
