Short-Term Landing Training Attenuates Landing Impact and Improves Jump Height in Landing-to-Jump Movement
Short-Term Landing Training Attenuates Landing Impact and Improves Jump Height in Landing-to-Jump Movement
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DOI：
10.1519/jsc.0b013e318271276e
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发表时间：
2013-06-01
影响因子：
3.2
通讯作者：
Nakazawa, Kimitaka
中科院分区：
文献类型：
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作者：
Iida, Yoshiaki;Kanehisa, Hiroaki;Nakazawa, Kimitaka
Iida，Y，Kanehisa，H，Inaba，Y，and Nakazawa，K.短时落地训练可减弱落地冲击力，提高起跳高度。J Strength Cond Res 27（6）：1560-1567，2013落地技术是影响落地-跳跃（L-J）动作跳跃成绩的重要因素。本研究探讨短期落地训练对L-J跳跃表现的影响。我们假设，不跳跃的落地训练降低了L-J的落地冲击力，增加了跳跃高度。20名健康成年男性被随机分配到对照组（CG：n = 10）或训练组（TG：n = 10）。TG进行了为期2周的着陆训练（每周3次，6次），旨在减少冲击力。在训练期前后，两组都进行了35厘米高度的落地和L-J以及蹲跳（SJS）。在着陆、L-J和SJ期间获得了地面反作用力和运动学数据。CG显示所有测量变量均无显著变化。在TG中，L-J中地面接触后100毫秒内的峰值垂直地面反作用力（相对于体重表示）显著降低（术前：3.04 [0.77] vs.术后：2.35 [0.37]，p < 0.01），L-J高度显著增加（术前：47.2 [5.6] cm vs.术后：48.2 [5.5] cm，p < 0.05）SJ高度无增加。此外，在推进阶段，TG显示髋关节功率显著增加（p < 0.01）。目前的研究结果支持我们的假设，并表明短期着陆训练改善了吸收着陆冲击和增加L-J高度的技术。L-J高度增加可能是髋关节周围发电量增加的结果。
Iida, Y, Kanehisa, H, Inaba, Y, and Nakazawa, K. Short-term landing training attenuates landing impact and improves jump height in landing-to-jump movement. J Strength Cond Res 27(6): 1560-1567, 2013Landing technique is an important factor influencing jump performance in landing-to-jump (L-J) movement. This study examined the effects of short-term landing training on jump performance in L-J. We hypothesized that landing training without jumping decreases landing impact and increases jump height in L-J. Twenty healthy adult men were randomly assigned to the control (CG: n = 10) or the training (TG: n = 10) group. The TG performed a 2-week landing training (3 times per week, 6 sessions) that aims to decrease impact force. Before and after the training period, both groups performed landing and L-J from a 35-cm height and also squat jumps (SJs). Ground reaction forces and kinematic data were obtained during the landing, L-J, and SJ. The CG showed no significant changes in all measured variables. In the TG, the peak vertical ground reaction force up to 100 mseconds after ground contact in L-J, expressed relative to body mass, significantly decreased (pre: 3.04 [0.77] vs. post: 2.35 [0.37], p < 0.01), and the L-J height significantly increased (pre: 47.2 [5.6] cm vs. post: 48.2 [5.5] cm, p < 0.05) without gain in SJ height. Furthermore, the TG showed significant gains (p < 0.01) in hip joint power during the propulsive phase. The current results support our hypothesis and indicate that short-term landing training improves the technique for absorbing landing impact and increasing L-J height. The increased L-J height may be a result of an increase in power generation around the hip joint.