The use of uniaxial accelerometry for the assessment of physical-activity-related energy expenditure: a validation study against whole-body indirect calorimetry - Kumahara,H.; Schutz,Y.; Ayabe,M.; Yoshioka,M.; Yoshitake,Y.; Shindo,M.; Ishii,K.; Tanaka,H. (Br J Nutr, 2004)