Wikstrom Erik A, Tillman Mark D, Schenker Scott M, Borsa Paul A
Center for Exercise Science, University of Florida, Florida, USA.
J Sci Med Sport. 2008 Apr;11(2):106-11. doi: 10.1016/j.jsams.2007.02.014. Epub 2007 Jun 1.
The purpose of this investigation was to determine dynamic postural stability differences among forward, diagonal, and lateral single leg-hop-stabilization protocols in healthy subjects. A one-within repeated measures design was used to determine the effects of jump direction on dynamic postural stability during landing. Subjects were required to perform a two-legged forward, diagonal, and lateral jump to a height equivalent to 50% of their maximum vertical leap, land on a single leg and balance for three seconds. Twenty-six subjects [10 males (22+/-3.9 years of age, 70.9+/-7.6kg, and 176.8+/-6.5cm) and 16 females (20.6+/-.5 years of age, 65.6+/-9.1kg, and 166.4+/-5.9cm)] volunteered to participate in this investigation. Dynamic postural stability indices for the anterior/posterior, medial/lateral, and vertical planes were collected during jump-landing trials of each direction. The results of the investigation show that medial/lateral and vertical dynamic postural stability were significantly affected by the direction of the jump. More specifically, lateral and diagonal jump-landings produce increased medial/lateral stability index (MLSI) scores and forward jump-landings produce increased vertical stability index (VSI) scores. The results suggest that in a healthy population, jump protocol direction will statistically affect dynamic postural stability in the frontal and vertical planes. These alterations could be exacerbated in individuals with lower extremity impairments and further research is warranted.
本研究的目的是确定健康受试者在向前、对角和侧向单腿跳跃稳定方案中的动态姿势稳定性差异。采用单因素重复测量设计来确定跳跃方向对着陆时动态姿势稳定性的影响。受试者被要求进行双腿向前、对角和侧向跳跃，高度相当于其最大垂直跳跃高度的50%，单腿落地并保持平衡三秒。26名受试者[10名男性（年龄22±3.9岁，体重70.9±7.6kg，身高176.8±6.5cm）和16名女性（年龄20.6±0.5岁，体重65.6±9.1kg，身高166.4±5.9cm）]自愿参与本研究。在每个方向的跳跃着陆试验中收集前后、内外侧和垂直平面的动态姿势稳定性指标。研究结果表明，内外侧和垂直方向的动态姿势稳定性受跳跃方向的显著影响。更具体地说，侧向和对角跳跃着陆会使内外侧稳定性指数（MLSI）得分增加，向前跳跃着陆会使垂直稳定性指数（VSI）得分增加。结果表明，在健康人群中，跳跃方案方向在统计学上会影响额面和垂直平面的动态姿势稳定性。在下肢有损伤的个体中，这些改变可能会加剧，因此有必要进行进一步的研究。
