不同弹性绳助力水平对垂直跳跃的影响。

Effects of different elastic cord assistance levels on vertical jump.

机构信息

Center for Sport Performance, Human Performance Laboratory, Department of Kinesiology, California State University, Fullerton, California, USA.

出版信息

J Strength Cond Res. 2011 Dec;25(12):3472-8. doi: 10.1519/JSC.0b013e318217664c.

DOI:10.1519/JSC.0b013e318217664c

PMID:21804422

Abstract

Tran, TT, Brown, LE, Coburn, JW, Lynn, SK, Dabbs, NC, Schick, MK, Schick, EE, Khamoui, AV, Uribe, BP, and Noffal, GJ. Effects of different elastic cord assistance levels on vertical jump. J Strength Cond Res 25(12): 3472-3478, 2011-Currently, little research has been conducted using body weight reduction (BWR) as a means to enhance vertical jump. The purpose of this study was to determine the effects of different elastic cord assistance levels on vertical jump height (JH), takeoff velocity (TOV), relative ground reaction force (rGRF), relative impact force (RIF), and descent velocity (DV). Thirty recreationally trained college men and women (M = 15, W = 15) completed 3 testing sessions consisting of 5 conditions: 0, 10, 20, 30, and 40% BWR. In all BWR conditions, the subjects wore a full body harness while being attached to 2 elastic cords suspended from the ceiling and a linear velocity transducer. They then performed 3 maximal countermovement jumps with arm swing on a force plate. The results indicated no interaction of condition by sex for any variable; however, there was a significant (p < 0.05) main effect for condition for each variable. The JH significantly increased across all conditions (0%: 43.73 ± 1.62 cm, 40%: 64.77 ± 2.36 cm). The TOV at 30% (2.73 ± 0.34 m·s) was significantly greater than that at 0% (2.59 ± 0.39 m·s) and 10% (2.63 ± 0.34 m·s), whereas that at 40% (2.79 ± 0.43 m·s) was significantly greater than that at >0, 10, and 20%. The rGRF at 30% (18.62 ± 4.35 N·kg) was significantly greater than that at >0, 10, and 20%, whereas that at 40% (21.38 ± 5.21 N·kg) was significantly greater than in all conditions. The RIF at 20, 30, and 40% (40%: 61.60 ± 18.53 N·kg) was significantly greater than that at 0% (44.46 ± 9.12 N·kg). The DV at 20% (2.61 ± 0.31 m·s) was significantly greater than at 10%, whereas those at 30 and 40% (2.8 ± 0.41 m·s) were significantly greater than at 0, 10, and 20%. These results demonstrate that using different elastic cord levels to reduce body weight appears effective for increasing ascent and descent force and velocity variables. Future research should investigate greater BWR% and chronic training.

摘要

陈，TT，布朗，LE，科本，JW，林恩，SK，达布斯，NC，希克，MK，希克，EE，卡莫伊，AV，乌里韦，BP，和诺法尔，GJ。不同弹性绳辅助水平对垂直跳跃的影响。J 力量与调节研究 25(12):3472-3478，2011-目前，很少有研究使用体重减轻（BWR）作为增强垂直跳跃的手段。本研究的目的是确定不同弹性绳辅助水平对垂直跳跃高度（JH）、起跳速度（TOV）、相对地面反作用力（rGRF）、相对冲击力（RIF）和下降速度（DV）的影响。30 名有经验的大学生（男性 15 名，女性 15 名）完成了 3 次测试，包括 5 种条件：0、10、20、30 和 40%BWR。在所有 BWR 条件下，受试者穿着全身安全带，同时连接到 2 根悬挂在天花板上的弹性绳和一个线性速度传感器。然后，他们在力台上进行了 3 次最大的反跳，带有手臂摆动。结果表明，在任何变量中，条件与性别的相互作用均不显著；然而，对于每个变量，条件都有显著的（p<0.05）主要影响。在所有条件下，JH 均显著增加（0%：43.73±1.62cm，40%：64.77±2.36cm）。30%的 TOV（2.73±0.34m·s）明显大于 0%（2.59±0.39m·s）和 10%（2.63±0.34m·s），而 40%的 TOV（2.79±0.43m·s）明显大于>0、10 和 20%。30%的 rGRF（18.62±4.35N·kg）明显大于>0、10 和 20%，而 40%的 rGRF（21.38±5.21N·kg）明显大于所有条件。20%、30%和 40%的 RIF（40%：61.60±18.53N·kg）明显大于 0%（44.46±9.12N·kg）。20%的 DV（2.61±0.31m·s）明显大于 10%，而 30%和 40%的 DV（2.8±0.41m·s）明显大于 0%、10%和 20%。这些结果表明，使用不同的弹性绳水平来减轻体重似乎可以有效地增加上升和下降力和速度变量。未来的研究应该调查更大的 BWR%和慢性训练。