平衡能力
平衡能力是指一个人维持自己身体的重力线（穿过质心且与地面垂直的线）与地面垂直的能力[1]。当一个人的平衡能力不佳，他的身体就会出现剧烈摇摆，即这个人即使静止不动，他的质心依然会相对于地面移动。受各种因素影响，人体会不可避免的出现一定程度的摇摆。[2]
参考文献
- ^ Shumway-Cook A, Anson D, Haller S. Postural sway biofeedback: its effect on reestablishing stance stability in hemiplegic patients. Archives of Physical Medicine and Rehabilitation. June 1988, 69 (6): 395–400. PMID 3377664.
- ^ Davidson BS, Madigan ML, Nussbaum MA. Effects of lumbar extensor fatigue and fatigue rate on postural sway. European Journal of Applied Physiology. October 2004, 93 (1–2): 183–189. PMID 15549370. S2CID 10343160. doi:10.1007/s00421-004-1195-1.