Instrumented Assessment of Physical Activity Is Associated With Muscle Function but Not With Muscle Mass in a General Population

Anna G.M. Rojer, Esmee M. Reijnierse, Marijke C. Trappenburg, Rob C. van Lummel, Martijn Niessen, Kim S. van Schooten, Mirjam Pijnappels, Carel G.M. Meskers, Andrea B. Maier*

*Corresponding author for this work

Research output: Contribution to JournalArticleAcademicpeer-review

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Abstract

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.

Original languageEnglish
Pages (from-to)1462-1481
Number of pages20
JournalJournal of Aging and Health
Volume30
Issue number9
Early online date24 Jul 2017
DOIs
Publication statusPublished - Oct 2018

Keywords

  • activity monitoring
  • aged
  • motor activity
  • muscle strength
  • physical performance
  • sarcopenia

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