Th e purpose of this study was to examine the acute eff ects of jumping exercise (JE) immediately aft er diff erent stretching protocols on fl exibility and power in healthy adults. Th is study was conducted with a balanced crossover design. Th irteen healthy males (25.4±3.46 years old) voluntarily participated in this study. All participants randomly completed four trials, including three diff erent stretching protocols; 1) static stretching (SS), 2) dynamic stretching (DS), 3) proprioceptive neuromuscular facilitation stretching (PNFS), and 4) a non-stretching control (NS) followed by the JE with seven-day intervals between tests. JE was composed of three sets of fi ve tuck jumps. Flexibility was determined by the ability to perform a straight leg raise (SLR) and power by vertical jump performance (VJP). Both SLR and VJP were measured at four time points; 1) baseline, 2) post-jogging, 3) post-stretching, and 4) post-JE; 4 × 4 repeated measures analysis of variances were applied. Th ere were signifi cant interaction eff ects on SLR (F=8.935, p<.001) and VJP (F=3.965, p=.009). Th e SLR score increased in all stretching protocols except the NS protocol post-stretching and postJE. Aft er stretching, the VJP score decreased in the NS (-2.6%), SS (-3.6%), and PNFS (-4.4%) protocols but maintained a positive score for the DS (1.8%) protocol. However, the VJP score recovered to the previous value in the SS (3.2%) and PNFS (6.5%) protocols aft er the jumping exercise. Th e present study suggests that jumping exercise immediately aft er SS and PNFS protocols could be an effi cient program for restoring stretching-induced power loss in healthy adults.

中文翻译：

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跳跃运动可恢复健康成年人的伸展运动引起的功率损失

这项研究的目的是研究在健康成年人的不同柔韧性和力量之后立即进行跳跃运动（JE）的急性效果。该研究是采用平衡分频设计进行的。13名健康男性（25.4±3.46岁）自愿参加了这项研究。所有参与者随机完成了四个试验，包括三个不同的拉伸方案。1）静态拉伸（SS），2）动态拉伸（DS），3）本体感觉神经肌肉促进拉伸（PNFS）和4）非拉伸对照（NS），然后是JE，每次测试之间间隔7天。JE由三组五只uck弹跳组成。柔韧性取决于进行直腿抬高（SLR）的能力和垂直跳跃性能（VJP）的力量。在四个时间点对SLR和VJP进行了测量。1）基准，2）慢跑后，3）伸展后和4）JE后；应用4×4重复测量方差分析。这对SLR（F = 8.935，p <.001）和VJP（F = 3.965，p = .009）有显着的交互作用。在所有拉伸方案中，除了NS方案在拉伸后和JE后，SLR评分均升高。在拉伸后，NS（-2.6％），SS（-3.6％）和PNFS（-4.4％）方案中的VJP评分降低，但DS（1.8％）方案中的评分保持正值。但是，在跳台运动后，SS（3.2％）和PNFS（6.5％）协议中的VJP分数恢复到先前的值。目前的研究表明，在SS和PNFS方案后立即进行跳跃运动可能是恢复健康成年人因拉伸引起的力量丧失的有效程序。