Issues in accelerometer methodology: the role of epoch length on estimates of physical activity and relationships with health outcomes in overweight, post-menopausal women.

ABSTRACT:

Background

Current accelerometer technology allows for data collection using brief time sampling intervals (i.e., epochs). The study aims were to examine the role of epoch length on physical activity estimates and subsequent relationships with clinically-meaningful health outcomes in post-menopausal women.

Methods

Data was obtained from the Woman On the Move through Activity and Nutrition Study (n = 102). Differences in activity estimates presented as 60s and 10s epochs were evaluated using paired t-tests. Relationships with health outcomes were examined using correlational and regression analyses to evaluate differences by epoch length.

Results

Inactivity, moderate- and vigorous-intensity activity (MVPA) were significantly higher and light-intensity activity was sign

SUBMITTER: Gabriel KP 

PROVIDER: S-EPMC2900223 | biostudies-literature | 2010 Jun

REPOSITORIES: biostudies-literature