Objective measurement of physical activity outcomes in lifestyle interventions among adults: A systematic review.
Silfee VJ, Haughton CF, Jake-Schoffman DE, Lopez-Cepero A, May CN, Sreedhara M, Rosal MC, Lemon SC. Objective measurement of physical activity outcomes in lifestyle interventions among adults: A systematic review. Prev Med Rep. 2018 Sep; 11:74-80.