Measurement of Active and Sedentary Behavior in Context of Large Epidemiologic Studies.

ABSTRACT:

Introduction/purpose

To assess the utility of measurement methods that may be more accurate and precise than traditional questionnaire-based estimates of habitual physical activity and sedentary behavior we compared the measurement properties of a past year questionnaire (AARP) and more comprehensive measures: an internet-based 24-h recall (ACT24), and a variety of estimates from an accelerometer (ActiGraph).

Methods

Participants were 932 adults (50-74 yr) in a 12-month study that included reference measures of energy expenditure from doubly labeled water (DLW) and active and sedentary time via activPAL.

Results

Accuracy at the group level (mean differences) was generally better for both ACT24 and ActiGraph than the AARP questionnaire. The AARP accuracy for energy exp

SUBMITTER: Matthews CE 

PROVIDER: S-EPMC5768470 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature