Division of Physical Therapy, Long Island University, Brooklyn, New York 11201, USA.
Clin J Sport Med. 2011 Jul;21(4):325-9. doi: 10.1097/JSM.0b013e31821f5cfb.
To determine the effect of gender and inclined floor on time to stability (TTS) after landing from a vertical jump.
This study used a repeated measures design with male and female professional dancers landing on a flat and 4 inclined floors. A repeated measures univariate analysis of variance (gender × floor) was performed on TTS in the anterior-posterior and medial-lateral directions.
Biomechanics laboratory.
Twenty-three female and 13 male professional dancers.
Gender and floor inclination (flat, posterior, anterior, lateral, and medial).
Time to stability in the anterior-posterior and medial-lateral directions after landing from a vertical jump.
Female dancers exhibited longer TTS in both directions (P ≤ 0.05). Floor inclination or the interaction of gender × floor did not have an effect on TTS (P > 0.3).
Female dancers exhibited longer TTS after landing from a vertical jump compared with their male counterparts. This balance difference may be a factor related to the higher rate of ankle sprain among female dancers. Additionally, professional dancers exhibited similar TTS when landing on flat and inclined floors.
确定性别和倾斜角度对垂直跳跃落地后达到稳定状态所需时间（TTS）的影响。
本研究采用重复测量设计，让男性和女性专业舞者分别在平坦和 4 个倾斜的地板上进行着陆。对 TTS 在前后向和内外侧向的性别×地板重复测量单变量方差分析（gender × floor）。
生物力学实验室。
23 名女性和 13 名男性专业舞者。
性别和地板倾斜度（平坦、后倾、前倾、侧倾和内倾）。
垂直跳跃落地后在前后向和内外侧向达到稳定状态的时间。
女性舞者在两个方向上的 TTS 都更长（P≤0.05）。地板倾斜度或性别×地板的相互作用对 TTS 没有影响（P＞0.3）。
与男性相比，女性舞者在垂直跳跃落地后 TTS 更长。这种平衡差异可能是女性舞者踝关节扭伤发生率较高的一个相关因素。此外，专业舞者在平坦和倾斜的地板上着陆时 TTS 相似。
