Criterion validity of a 10-category scale for ranking physical activity in Norwegian women.

ABSTRACT:

Background

Accurate measurement of physical activity (PA) is critical to establish dose-response relationships with various health outcomes. We compared the self-administered PA questionnaire from the Norwegian Women and Cancer Study (NOWAC) with a criterion method in middle-aged Norwegian women.

Methods

A sample of 177 randomly recruited healthy women attended two clinical visits approximately 4-6 months apart. At each visit, the women completed the NOWAC PA questionnaire (NOPAQ), rating their overall PA level on a 10-category scale (1 being a "very low" and 10 being a "very high" PA level) and performed an 8-minute step-test to estimate aerobic fitness (VO2max). After each visit, the women wore a combined heart rate and movement sensor for 4 consecutive days of free-living

SUBMITTER: Borch KB 

PROVIDER: S-EPMC3398334 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature