Jackicic, J. M.,Polley, B. A.,Wing, R. R.(1998).Accuracy of self-reported exercise and the relationship with weight loss in overweight women.Medicine and Science in Sports and Exercise.30,634-638.
LaPorte, R. E.,Montoye, H. J.,Caspersen, C. J.(1985).Assessment of physical activity in epidemiologic research: Problems and prospects.Public Health Rep..100,131-146.
Nichols, J. F.,Morgan, C. G.,Sarkin, J. A.,Sallis, J. F.,Calfas, K. J.(1999).Validity, reliability, and calibration of the TriTrac accelerometer as a measure of physical activity.Med Sci Sports Exerc.31(6),908-912.
Saelens, B. E.,Epstein, L. H.,O''Brien, J. G.(1995).The TriTrac-R3D activity monitor and behavioral observation: A validity study.Annal of Behavioral Medicine.17,s113.