Muscle contributions to propulsion and support during running.
Muscle contributions to propulsion and support during running.
复制标题
跑步过程中肌肉对推进和支撑的贡献。
DOI：
10.1016/j.jbiomech.2010.06.025
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发表时间：
2010-10-19
影响因子：
2.4
通讯作者：
Delp, Scott L.
中科院分区：
文献类型：
--
作者：
Hamner, Samuel R.;Seth, Ajay;Delp, Scott L.
关键词：
肌肉通过产生推动身体前进的力量来驱动跑步，同时支撑身体的重量。为了了解肌肉如何促进推进力（即，质心的向前加速度）和支撑（即，质心的向上加速度），我们开发了跑步步态周期的三维肌肉驱动模拟。该模拟由下肢和躯干的92个肌肉肌腱致动器驱动，包括手臂运动的动力学。我们分析了模拟，以确定每块肌肉对身体质量中心加速度的贡献。在站立阶段的早期，股四头肌群是制动的最大贡献者（即，质量中心的向后加速度）和支撑。在站立阶段的后半部分，比目鱼肌和腓肠肌是最大的推动力和支持。这些手臂对推进力和支撑力都没有实质性的贡献，产生的加速度不到峰值质心加速度的1%。然而，手臂有效地平衡了下肢的垂直角动量。我们的分析显示，股四头肌和跖屈肌是在运行过程中的身体质量中心的加速度的主要贡献者。
Muscles actuate running by developing forces that propel the body forward while supporting the body's weight. To understand how muscles contribute to propulsion (i.e., forward acceleration of the mass center) and support (i.e., upward acceleration of the mass center) during running we developed a three-dimensional muscle-actuated simulation of the running gait cycle. The simulation is driven by 92 musculotendon actuators of the lower extremities and torso and includes the dynamics of arm motion. We analyzed the simulation to determine how each muscle contributed to the acceleration of the body mass center. During the early part of the stance phase, the quadriceps muscle group was the largest contributor to braking (i.e., backward acceleration of the mass center) and support. During the second half of the stance phase, the soleus and gastrocnemius muscles were the greatest contributors to propulsion and support. The arms did not contribute substantially to either propulsion or support, generating less than 1% of the peak mass center acceleration. However, the arms effectively counterbalanced the vertical angular momentum of the lower extremities. Our analysis reveals that the quadriceps and plantarflexors are the major contributors to acceleration of the body mass center during running.
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影响因子：
2.4
作者：
Liu, May Q.;Anderson, Frank C.;Schwartz, Michael H.;Delp, Scott L.
通讯作者：
Delp, Scott L.
影响因子：
2.4
作者：
CAVANAGH, PR;LAFORTUNE, MA
通讯作者：
LAFORTUNE, MA
DOI：
10.1123/ijsb.3.3.222
发表时间：
1987-08-01
期刊：
INTERNATIONAL JOURNAL OF SPORT BIOMECHANICS
影响因子：
--
作者：
HINRICHS, RN;CAVANAGH, PR;WILLIAMS, KR
通讯作者：
WILLIAMS, KR
DOI：
10.1123/ijsb.3.3.242
发表时间：
1987-08-01
期刊：
INTERNATIONAL JOURNAL OF SPORT BIOMECHANICS
影响因子：
--
作者：
HINRICHS, RN
通讯作者：
HINRICHS, RN
影响因子：
3.8
作者：
Holzbaur, KRS;Murray, WM;Delp, SL
通讯作者：
Delp, SL