Hamstrings to quadriceps peak torque ratios diverge between sexes with increasing isokinetic angular velocity
Hamstrings to quadriceps peak torque ratios diverge between sexes with increasing isokinetic angular velocity
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DOI：
10.1016/j.jsams.2007.04.009
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发表时间：
2008-09-01
影响因子：
4
通讯作者：
Zazulak, Bohdanna T.
中科院分区：
文献类型：
--
作者：
Hewett, Timothy E.;Myer, Gregory D.;Zazulak, Bohdanna T.
我们的目的是确定女性是否表现出降低的腿筋股四头肌峰值扭矩（H/Q）比相比，交配，如果H/Q比增加等速在两种性别。在高速运动中，成熟的肌肉张力增加了配偶的腘绳肌峰值扭矩，但对雌性没有影响。因此，我们假设，成熟的女性将表现出降低H/Q比相比，交配和性别之间的H/Q比的差异将增加等速速度增加。在我们的回顾和分析中包括了1967年至2004年期间报告的重力校正等速力量测试的H/Q比分析研究。关键词是腘绳肌/股四头肌，等速肌力，峰值扭矩和重力校正。检索Medline和Smart数据库，并结合交叉检查的出版物参考书目列表，以确定纳入的研究。纳入了22项研究，共1568例受试者（1145例男性，423例女性）。交配动物的H/Q比与等速运动速度之间存在显著相关性（R = 0.634，p < 0.0001），最低角速度（30度/s时为47.8 +/- 2.2%）与最高角速度（360度/s时为81.4 +/- 1.1%，p < 0.001）下的等速运动H/Q比存在显著差异。相比之下，女性没有表现出H/Q比和等速运动速度（R = 0.065，p = 0.77）之间的显著关系，也没有表现出随着速度增加相对腿筋强度的变化（30度/秒时为49.5 +/- 8.8%; 360度/秒时为51.0 +/- 5.7%，p = 0.84）。在较慢的角速度下，没有观察到等速H/Q比的性别差异。然而，在高膝关节屈曲/伸展角速度，接近那些发生在体育活动中，显着的性别差异，观察到的H/Q比。女性，不像配偶，不增加腿筋股四头肌扭矩比的速度接近功能活动。(c)2007年澳大利亚运动医学。由爱思唯尔有限公司出版。保留所有权利。
Our purpose was to determine if females demonstrate decreased hamstrings to quadriceps peak torque (H/Q) ratios compared to mates and if H/Q ratios increase with increased isokinetic velocity in both sexes. Maturation disproportionatety increases hamstrings peak torque at high velocity in mates, but not females. Therefore, we hypothesised that mature females would demonstrate decreased H/Q ratios compared to mates and the difference in H/Q ratio between sexes would increase as isokinetic velocity increased. Studies that analysed the H/Q ratio with gravity corrected isokinetic strength testing reported between 1967 and 2004 were included in our review and analysis. Keywords were hamstrings/quadriceps, isokinetics, peak torque and gravity corrected. Medline and Smart databases were searched combined with cross-checked bibliographic reference lists of the publications to determine studies to be included. Twenty-two studies were included with a total of 1568 subjects (1145 mate, 423 female). Mates demonstrated a significant correlation between H/Q ratio and isokinetic velocity (R = 0.634, p < 0.0001), and a significant difference in the isokinetic H/Q ratio at the lowest angular velocity (47.8 +/- 2.2% at 30 degrees/s) compared to the highest velocity (81.4 +/- 1.1% at 360 degrees/s, p < 0.001). In contrast, females did not demonstrate a significant relationship between H/Q ratio and isokinetic velocity (R = 0.065, p = 0.77) or a change in relative hamstrings strength as the speed increased (49.5 +/- 8.8% at 30 degrees/s; 51.0 +/- 5.7% at 360 degrees/s, p = 0.84). Gender differences in isokinetic H/Q ratios were not observed at slower angular velocities. However, at high knee flexion/extension angular velocities, approaching those that occur during sports activities, significant gender differences were observed in the H/Q ratio. Females, unlike mates, do not increase hamstrings to quadriceps torque ratios at velocities that approach those of functional activities. (c) 2007 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.