Fitness, fatness and the reallocation of time between children's daily movement behaviours: an analysis of compositional data.

ABSTRACT:

Background

Movement behaviours performed over a finite period such as a 24 h day are compositional data. Compositional data exist in a constrained simplex geometry that is incongruent with traditional multivariate analytical techniques. However, the expression of compositional data as log-ratio co-ordinate systems transfers them to the unconstrained real space, where standard multivariate statistics can be used. This study aimed to use a compositional data analysis approach to examine the adiposity and cardiorespiratory fitness predictions of time reallocations between children's daily movement behaviours.

Methods

This study used cross-sectional data from the Active Schools: Skelmersdale study, which involved Year 5 children from a low-income community in northwest England (

SUBMITTER: Fairclough SJ 

PROVIDER: S-EPMC5424384 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature