Lean Mass Asymmetry Influences Force and Power Asymmetry During Jumping in Collegiate Athletes
Lean Mass Asymmetry Influences Force and Power Asymmetry During Jumping in Collegiate Athletes
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DOI：
10.1519/jsc.0000000000000367
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发表时间：
2014-04-01
影响因子：
3.2
通讯作者：
Heiderscheit, Bryan C.
中科院分区：
文献类型：
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作者：
Bell, David R.;Sanfilippo, Jennifer L.;Heiderscheit, Bryan C.
Bell, DR、Sanfilippo, JL、Binkley, N 和 Heiderscheit, BC。瘦质量不对称影响大学运动员跳跃过程中的力量和功率不对称。 J Strength Cond Res 28(4): 884-891, 2014 - 这项调查的目的是 (a) 检查下肢瘦体重的不对称性如何影响跳跃过程中的力量和力量不对称性，(b) 确定力量和力量不对称性如何影响跳跃高度，以及 (c) 报告大学运动员的标准值。在 167 名 1 级运动员（体重 = 85.7 +/- 20.3 公斤，年龄 = 20.0 +/- 1.2 岁；103 名男性和 64 名女性）进行反向运动跳跃期间，使用双侧测力板评估了每个肢体的力量和爆发力。使用双能 X 射线吸收测定法评估骨盆、大腿和小腿的去脂质量。计算每个区域（骨盆、大腿和小腿）的瘦体重以及力量和功率的不对称百分比。进行前向逐步回归以确定瘦质量不对称对力和功率不对称的影响。大腿和小腿的瘦肉质量不对称解释了 20% 的力不对称方差（R-2 = 0.20，p < 0.001），而骨盆、大腿和小腿的瘦肉质量不对称解释了 25% 的力不对称方差（R-2 = 0.25，p < 0.001）。跳跃高度在力和功率不对称水平上进行比较 (p > 0.05)，功率不对称性超过 10% 往往会降低表现（效应大小 >1.0）。该人群中 95%（第 2.5 至 97.5 个百分点）的力不对称性在 -11.8% 至 16.8% 之间，功率不对称性在 -9.9% 至 11.5% 之间。一小部分（
Bell, DR, Sanfilippo, JL, Binkley, N, and Heiderscheit, BC. Lean mass asymmetry influences force and power asymmetry during jumping in collegiate athletes. J Strength Cond Res 28(4): 884-891, 2014-The purpose of this investigation was to (a) examine how asymmetry in lower extremity lean mass influenced force and power asymmetry during jumping, (b) determine how power and force asymmetry affected jump height, and (c) report normative values in collegiate athletes. Force and power were assessed from each limb using bilateral force plates during a countermovement jump in 167 division 1 athletes (mass = 85.7 +/- 20.3 kg, age = 20.0 +/- 1.2 years; 103 men and 64 women). Lean mass of the pelvis, thigh, and shank was assessed using dual-energy x-ray absorptiometry. Percent asymmetry was calculated for lean mass at each region (pelvis, thigh, and shank) as well as force and power. Forward stepwise regressions were performed to determine the influence of lean mass asymmetry on force and power asymmetry. Thigh and shank lean mass asymmetry explained 20% of the variance in force asymmetry (R-2 = 0.20, p < 0.001), whereas lean mass asymmetry of the pelvis, thigh, and shank explained 25% of the variance in power asymmetry (R-2 = 0.25, p < 0.001). Jump height was compared across level of force and power asymmetry (p > 0.05) and greater than 10% asymmetry in power tended to decrease the performance (effect size >1.0). Ninety-five percent of this population (2.5th to 97.5th percentile) displayed force asymmetry between -11.8 and 16.8% and a power asymmetry between -9.9 and 11.5%. A small percentage (