Estimating Sedentary Time from a Hip- and Wrist-Worn Accelerometer.

ABSTRACT:

Purpose

This study aimed to determine the validity of existing methods to estimate sedentary behavior (SB) under free-living conditions using ActiGraph GT3X+ accelerometers (AG).

Methods

Forty-eight young (18-25 yr) adults wore an AG on the right hip and nondominant wrist and were video recorded during four 1-h sessions in free-living settings (home, community, school, and exercise). Direct observation videos were coded for postural orientation, activity type (e.g., walking), and METs derived from the Compendium of Physical Activities, which served as the criterion measure of SB (sitting or lying posture, <1.5 METs). Thirteen methods using cut points from vertical counts per minute (CPM), counts per 15-s (CP15s), and vector magnitude (VM) counts (e.g., CPM1853VM), raw accele

SUBMITTER: Marcotte RT 

PROVIDER: S-EPMC9624389 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature