Karim Annette, Roddey Toni, Mitchell Katy, Ortiz Alexis, Olson Sharon
Azusa Pacific University, Azusa, California, USA, Department of Physical Therapy, Azusa Pacific University, 901 Easet Alosta Avenue, PO Box 7000, Azusa, California 91702-7000, USA;, Email:
Texas Woman's University, Houston, Texas, USA.
J Dance Med Sci. 2019 Mar 15;23(1):3-10. doi: 10.12678/1089-313X.23.1.3.
This randomized controlled trial examined the immediate effect of whole body vibration (WBV) on first position sauté height, and on static and dynamic balance, in 59 female professional contemporary dancers. Following instruction, a warm-up, and a training session, participants received a 75-second randomly assigned WBV intervention under four conditions: static demi-plié (0 Hz), static demi-plié (30 Hz), dynamic demi-plié (0 Hz), and dynamic demi-plié (30 Hz). Before and immediately after intervention, participants performed three sautés on the Just Jump Mat System, provided dynamic balance data via the Star Excursion Balance Test, and static balance data via the Balance Error Scoring System. A two-way split-plot multivariate approach ANOVA was used to analyze sauté height (α = 0.025). Balance was examined with a 4 x 2 x 2 split-plot MANOVA (α = 0.025). Follow-up two-way split plot multivariate approach ANOVAs were also conducted (α = 0.0125). Dancers from the static first position demi-plié group were found to jump higher than those from the dynamic first position demi-plié group, regardless of WBV frequency (p = 0.001). The 30 Hz frequency resulted in significantly improved static balance (p = 0.001) for both static and dynamic demi-plié. Therefore, the use of WBV is worthy of consideration as a quick method of improving static balance, and use of the static first position demi-plié may be beneficial for improving sauté height.
这项随机对照试验研究了全身振动（WBV）对59名女性专业现代舞者的第一位 sauté 高度以及静态和动态平衡的即时影响。在接受指导、热身和训练课程后，参与者在四种条件下接受了75秒的随机分配的WBV干预：静态半蹲（0赫兹）、静态半蹲（30赫兹）、动态半蹲（0赫兹）和动态半蹲（30赫兹）。在干预前和干预后立即，参与者在Just Jump Mat系统上进行三次 sauté，通过Star Excursion Balance Test提供动态平衡数据，并通过Balance Error Scoring System提供静态平衡数据。使用双向裂区多元方差分析方法分析sauté高度（α = 0.025）。使用4×2×2裂区多变量方差分析（α = 0.025）检查平衡情况。还进行了后续的双向裂区多元方差分析（α = 0.0125）。结果发现，无论WBV频率如何，来自静态第一位半蹲组的舞者比来自动态第一位半蹲组的舞者跳得更高（p = 0.001）。30赫兹频率导致静态和动态半蹲的静态平衡均有显著改善（p = 0.001）。因此，WBV作为一种改善静态平衡的快速方法值得考虑，并且使用静态第一位半蹲可能有利于提高sauté高度。
