Instrumented Assessment of Physical Activity Is Associated With Muscle Function but Not With Muscle Mass in a General Population
Research output: Contribution to journal › Article › Academic › peer-review
Objectives: 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. Method: 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. Results: 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. Discussion: 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.
Rojer, A. G. M., Reijnierse, E. M., Trappenburg, M. C., van Lummel, R. C., Niessen, M., van Schooten, K. S., ... Maier, A. B. (2018). Instrumented Assessment of Physical Activity Is Associated With Muscle Function but Not With Muscle Mass in a General Population. Journal of Aging and Health, 30(9), 1462-1481. https://doi.org/10.1177/0898264317721554