Relative and absolute intensity accelerometer metrics decipher the effects of age, sex, and occupation on physical activity.

ABSTRACT:

Background

To investigate whether quantifying both the absolute and relative intensity of physical activity (PA) improves understanding of age, sex, and occupation-related differences in PA in healthy adults aged 20-89.

Methods

In the cross-sectional COmPLETE study, participants (N = 460, 48% women, age 55 [IQR 37, 71]) wore accelerometers for up to 14 days and underwent cardiopulmonary exercise testing. Average acceleration (AvAcc) and distribution of intensity (IG) of PA across the day were expressed in absolute terms (__ABS) and relative (__REL) to the acceleration at the individual´s maximum intensity, predicted from cardiorespiratory fitness.

Results

After initial increases, AvAcc__ABS and IG__ABS continuously declined beyo

SUBMITTER: Schwendinger F 

PROVIDER: S-EPMC11884089 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature