Validity of combining heart rate and uniaxial acceleration to measure free-living physical activity energy expenditure in young men.
Villars C, Bergouignan A, Dugas J, Antoun E, Schoeller DA, Roth H, Maingon AC, Lefai E, Blanc S, Simon C. Validity of combining heart rate and uniaxial acceleration to measure free-living physical activity energy expenditure in young men. J Appl Physiol (1985). 2012 Dec 01; 113(11):1763-71.