Estimation of Physical Activity Energy Expenditure during Free-Living from Wrist Accelerometry in UK Adults.

ABSTRACT:

Background

Wrist-worn accelerometers are emerging as the most common instrument for measuring physical activity in large-scale epidemiological studies, though little is known about the relationship between wrist acceleration and physical activity energy expenditure (PAEE).

Methods

1695 UK adults wore two devices simultaneously for six days; a combined sensor and a wrist accelerometer. The combined sensor measured heart rate and trunk acceleration, which was combined with a treadmill test to yield a signal of individually-calibrated PAEE. Multi-level regression models were used to characterise the relationship between the two time-series, and their estimations were evaluated in an independent holdout sample. Finally, the relationship between PAEE and BMI was described separat

SUBMITTER: White T 

PROVIDER: S-EPMC5147924 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature