8Olivier M, Denis M, Stephane P, et al. The role of cocontraction in the impairment of movement accuracy with fatigue[J]. Exp Brain Res, 2008, 185: 151-156.
9J Bergstrom, E Hultman, B Saltin, et al. Muscle Glycogen Consumption during Cross-Country Skiing (the Vasa Ski Race)[J]. Int. Z. angew. Physiol, 1973, 31: 71-75.
10Pekka O, Raija M T L, T Katrlina K, et al. Training effects of cross-country skiing and running on maximal aerobic cycle performance and on blood lipids[J]. Eur J Appl Physiol, 1991, 62: 400-404.