MRC Epidemiology Unit
Mechanical and free living comparisons of four generations of the Actigraph activity monitor.
Ried-Larsen M, Brønd JC, Brage S, Hansen BH, Grydeland M, Andersen LB, Møller NC
The international journal of behavioral nutrition and physical activity. Mar 2012
(DOI : 10.1186/1479-5868-9-113)
