Association between Objectively Measured Physical Activity and Mortality in NHANES.

ABSTRACT:

Purpose

We examined total activity, light activity, and moderate-to-vigorous physical activity (MVPA) as predictors of mortality in a nationally representative sample of older adults. Then we explored the theoretical consequences of replacing sedentary time with the same duration of light activity or MVPA.

Methods

Using accelerometer-measured activity, the associations between total activity, light activity (100-2019 counts per minute), and MVPA (>2019 counts per minute) counts and mortality were examined in adults age 50 to 79 yr in the National Health and Nutrition Examination Survey, 2003-2006 (n = 3029), with mortality follow-up through December 2011. Cox proportional hazard models were fitted to estimate mortality risks. An isotemporal substitution model was used to exa

SUBMITTER: Fishman EI 

PROVIDER: S-EPMC4911242 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature