6Rodgers SH. Ergonomic Design for People at Work//Appendix A. Human Capacities and Job Demands: Muscle Strength Date. 2nd Volume. New York: VAN NOSTRAND REINHOLD, 1986:453- 463.
7Jansen NW, van Amelsvoort LG, Kristensen TS, et al. Work schedules and fatigue: a prospective cohort study. Occup Environ Med, 2003, 60(Suppl 1): 47-53.
8Marras WS. Occupational low back disorder causation and control. Ergonomics, 2000, 43: 880-920.
9Sluiter JK, de Croon EM, Meijman TF, et al. Need for recovery from work related fatigue and its role in the development and prediction of subjective health complaints. Occup Environ Med, 2003, 60(Suppl): i62-70.
10Jin K, Sorock GS, Courtney T, et al. Risk factors for work-related low back pain in the People's Republic of China. Int J Occup Environ Health, 2000, 6: 26-33.
