Validation of Pure and Total Movement Dispersion Variables as Measures of the Distribution of Daily Activity Using Accelerometers: A Secondary Analysis of a Prospective Cohort.

ABSTRACT:

Aim

Physical activity (PA) positively impacts health, but the optimal manner to achieve PA remains unclear. Pure and total movement dispersion are novel metrics that quantify the spread of movement across the day, with (total) or without (pure) intensity. The purpose of the study is to evaluate whether pure and total movement dispersion are positively associated with established PA metrics and inversely associated with sedentary behavior (SB) metrics.

Subject and methods

This study involves a secondary analysis of accelerometer data collected within the Multicenter AIDS Cohort Study (MACS) from 2018 to 2020 in four U.S. cities (Boston, Chicago, Los Angeles, and Pittsburgh) as part of a sleep substudy. Of the data received on 638 participants who wore an ActiGraph GT9X on the

SUBMITTER: Klamm MM 

PROVIDER: S-EPMC13645366 | biostudies-literature | 2026 Oct

REPOSITORIES: biostudies-literature