Dipartimento di Elettronica e Telecomunicazioni, Politecnico di Torino, Torino, Italy.
Hum Mov Sci. 2013 Jun;32(3):445-56. doi: 10.1016/j.humov.2013.01.002. Epub 2013 Apr 28.
The aim of this work was to analyze the postural sway of volleyball players in bipedal quiet stance. The center of pressure (CoP) was measured in 46 athletes and 42 non-athlete controls. Each subject was tested in 10 different conditions, 5 with their eyes open and 5 with their eyes closed. Volleyball players showed greater CoP ellipses, suggesting a different model of sensory integration in their postural stability. A multivariate approach to data analysis demonstrated that the postural sway of the two groups was different when the subjects kept their eyes open, but it was not with visual deprivation. This could partially be explained by the better 'dynamic' visual acuity of athletes, since possible ('static') refractive errors were corrected for both groups. Furthermore, we expected that national players, engaged in more intensive training programs, were more different from controls than regional ones, and that defensive players, whose role requires the quickest reaction times, were more different from controls than hitters. Our results confirmed these hypothesis. The protocol presented might be useful to assess the efficacy of intensive sport training programs and/or to select elite players with an aptitude for a specific playing position.
本研究旨在分析排球运动员在双足静立姿势下的姿势摆动。对 46 名运动员和 42 名非运动员对照者的中心压力（CoP）进行了测量。每位受试者接受了 10 种不同条件的测试，其中 5 种睁眼，5 种闭眼。排球运动员的 CoP 椭圆更大，表明他们的姿势稳定性的感觉整合模式不同。对数据的多变量分析方法表明，当受试者睁眼时，两组的姿势摆动不同，但在视觉剥夺时则不同。这在一定程度上可以通过运动员更好的“动态”视力来解释，因为两组都对可能的（“静态”）屈光不正进行了矫正。此外，我们预计，参加更密集训练计划的国家级运动员比地区级运动员与对照组的差异更大，而需要最快反应时间的防守球员比击球手与对照组的差异更大。我们的结果证实了这些假设。提出的方案可能有助于评估强化运动训练计划的效果和/或选择具有特定比赛位置能力的精英运动员。
