Approaches to estimating physical activity in the community: calorimetric validation of actometers and heart rate monitoring
Avons, P.; Garthwaite, P.; Davies, H.L.; Murgatroyd, P.R.; James, W.P.
European Journal of Clinical Nutrition 42(3): 185-196
1988
ISSN/ISBN: 0954-3007 PMID: 3383823 Document Number: 306376
The relation between actometer measurements, heart rate monitoring and energy expenditure during exercise and resting periods was assessed in a whole-body indirect calorimeter on 12 young men. Equations derived from these studies were applied to actometer measurements taken during a further 7 days recording in free-living conditions to predict daily energy expenditure during 1 week on an individual basis. Actometers were a satisfactory means of estimating energy expenditure and heart rate monitoring improved the estimates in a few selected subjects. Indirect measures of energy expenditure could be developed by this approach but individual calibration is essential.