University of Valencia, Physical Education and Sports, Valencia, Spain.
Int J Sports Med. 2010 Feb;31(2):118-22. doi: 10.1055/s-0029-1242814. Epub 2009 Dec 17.
The current study was designed to quantify and compare the kinetic parameters of two-leg squat jumps carried out on dry land, in water and in water using area devices that increase drag force. Twelve junior female handball players who had been competing at national level for the previous two years volunteered to participate in the study. Intensity of the two-leg squat jump was examined using a force plate (9 253-B11, Kistler Instrument AG, Winterthur, Switzerland) in three different conditions: on dry land, in water and in water using devices. An ANOVA with repeated measurements (condition) was applied to establish differences between the three jumps. The results show that peak impact force and impact force rate for the water jumps was lower than for the dry land jumps (p<0.05), while peak concentric force was higher for the water jumps than the dry land jumps (p<0.05). In addition, no statistically significant differences were found between water jumps for these variables (p>0.05). These results indicate that water provides an ideal environment for carrying out jumps, as the variables associated with the exercise intensity are boosted, while those related to the impact force are reduced and this fact could be less harmful.
本研究旨在定量比较和比较在旱地、水中和使用增加阻力的区域设备的水中进行的两腿深蹲跳的动力学参数。12 名曾在过去两年参加过国家级比赛的年轻女性手球运动员自愿参加了这项研究。使用力板（9 253-B11，Kistler Instrument AG，Winterthur，瑞士）在三种不同条件下检查两腿深蹲跳的强度：在旱地、水中和使用设备的水中。应用具有重复测量（条件）的 ANOVA 来确定三种跳跃之间的差异。结果表明，水跳的峰值冲击力和冲击力速率低于旱地跳（p<0.05），而水跳的峰值向心力高于旱地跳（p<0.05）。此外，这些变量之间的水跳没有发现统计学上的显著差异（p>0.05）。这些结果表明，水为进行跳跃提供了理想的环境，因为与运动强度相关的变量得到了提高，而与冲击力相关的变量则降低了，这一事实可能危害较小。
