10-year changes in accelerometer-based physical activity and sedentary time during midlife: CARDIA Study.

10-year changes in accelerometer-based physical activity and sedentary time during midlife: CARDIA Study.
Am J Epidemiol. 2018 Jun 11;:
Authors: Gabriel KP, Sidney S, Jacobs DR, Whitaker KM, Carnethon MR, Lewis CE, Schreiner PJ, Malkani RI, Shikany JM, Reis JP, Sternfeld B
Abstract
To describe 10-year changes in accelerometer-determined physical activity (PA) and sedentary time in a midlife cohort, within and by race/sex groups. Coronary Artery Risk Development in Young Adults participants (n = 962) who wore the accelerometer with valid wear (≥4 of 7 days, ≥10 hours per day) at baseline (2005-06; ages 38-50; ActiGraph 7164) and 10-year follow-up (2015-16; ages 48-60; ActiGraph wGT3X-BT). Data were calibrated to account for accelerometer model differences. Participants (aged 45.0 ± 3.5 years at baseline) experienced reductions in accelerometer counts overall [-65.5 (10.2) ct·min·d-1], and within race/sex groups (all p < 0.001). Sedentary time increased overall [37.9 (3.7) min∙d-1], and within race/sex groups, while light intensity PA [-30.6 (2.7) min∙d-1] and moderate to vigorous intensity PA both declined overall [-7.5 (0.8) min∙d-1], and within race/sex groups (all p < 0.001). Significant differences in 10-year change estimates were noted by race/sex groups for accelerometer counts, sedentary time, and moderate to vigorous intensity PA bouts with black men experiencing the greatest reductions in PA compa...

Source: Am J Epidemiol - June 11, 2018 Category: Epidemiology Authors: Gabriel KP, Sidney S, Jacobs DR, Whitaker KM, Carnethon MR, Lewis CE, Schreiner PJ, Malkani RI, Shikany JM, Reis JP, Sternfeld B Tags: Am J Epidemiol Source Type: research