1 VU University Medical Center Amsterdam, The Netherlands.
2 University of Melbourne, Australia.
J Aging Health. 2018 Oct;30(9):1462-1481. doi: 10.1177/0898264317721554. Epub 2017 Jul 24.
Self-reported physical activity has shown to affect muscle-related parameters. As self-report is likely biased, this study aimed to assess the association between instrumented assessment of physical activity (I-PA) and muscle-related parameters in a general population.
Included were 156 young-to-middle-aged and 80 older community-dwelling adults. Seven days of trunk accelerometry (DynaPort MoveMonitor, McRoberts B.V.) quantified daily physical activity (i.e., active/inactive duration, number and mean duration of active/inactive periods, and number of steps per day). Muscle-related parameters included muscle mass, handgrip strength, and gait speed.
I-PA was associated with handgrip strength in young-to-middle-aged adults and with gait speed in older adults. I-PA was not associated with muscle mass in either age group.
The association between I-PA and muscle-related parameters was age dependent. The lack of an association between I-PA and muscle mass indicates the relevance of muscle function rather than muscle mass.
自我报告的身体活动已被证明会影响与肌肉相关的参数。由于自我报告可能存在偏差，本研究旨在评估仪器评估的身体活动（I-PA）与普通人群中与肌肉相关的参数之间的关联。
纳入了 156 名年轻到中年和 80 名老年社区居民。7 天躯干加速度计（DynaPort MoveMonitor，McRoberts B.V.）量化了日常身体活动（即活跃/不活跃持续时间、活跃/不活跃期的次数和平均持续时间以及每天的步数）。与肌肉相关的参数包括肌肉质量、握力和步态速度。
I-PA 与年轻到中年成年人的握力以及与老年人的步态速度相关。I-PA 与两个年龄组的肌肉质量均无关。
I-PA 与肌肉相关参数之间的关联取决于年龄。I-PA 与肌肉质量之间缺乏关联表明肌肉功能而不是肌肉质量的相关性。
