Mechanical power flow from trunk and lower limb joint power to external horizontal power in the track and field block start
Mechanical power flow from trunk and lower limb joint power to external horizontal power in the track and field block start
复制标题
田径区块起跑中从躯干和下肢关节动力到外部水平动力的机械动力流
DOI：
10.1080/17461391.2022.2109067
复制
发表时间：
2022
影响因子：
3.2
通讯作者：
Fukashiro Senshi
中科院分区：
文献类型：
--
作者：
Sado Natsuki;Yoshioka Shinsuke;Fukashiro Senshi
短跑起步性能是以水平外功率、水平动能产生的时间平均速率来衡量的。虽然联合功率已被检查，并不是所有的部分旋转施加的正功率必然有助于向前推进;有关水平功率的细节仍然不清楚。在这里，我们显示的部分旋转的贡献，向前和向上的推进。我们计算了12名男性短跑运动员在短跑开始时施加在每个节段上的联合功率以及节段旋转对标准化平均水平和垂直外部功率（和）的贡献。超过一半（55 ± 6%）是由于前大腿旋转（0.30 ± 0.04），髋关节和膝关节施加正功率。骨盆旋转对（0.00 ± 0.01）无贡献。这突出了髋伸肌力量的重要性，并需要它伴随着腰部伸肌力量抵消髋伸肌对骨盆的作用，并促进髋伸肌引起的大腿旋转。前大腿旋转减少（−0.08 ± 0.02），主要由胸部（0.04 ± 0.01）、腰部（0.06 ± 0.02）和骨盆（0.04 ± 0.01）的旋转引起。下肢节段的旋转并不有助于向上推进。因此，前大腿引起向下的运动，这是由躯干部分平衡。我们弥合了目前理解上的差距，从联合力量到。我们提出了一个案例，涉及段上的积极的联合权力施加类似的，但发挥不同的作用：向前或向上推进，从而提供洞察方向控制机制，在爆炸引发motion.HighLIGHTSWe审查的贡献段旋转的归一化平均水平和垂直的外部功率（，）：超过一半（55 ± 6%）是由于前大腿旋转，而前大腿旋转减少，这是由胸部旋转抵消，我们弥合了目前从关节动力到关节动力的理解中的差距，并进一步提出了一个涉及关节段的病例，关节段被施加了正的关节动力，但发挥着不同的作用：向前或向上推进。
Sprint start performance is measured as the horizontal external power, the time-average rate of horizontal kinetic energy generation. Although joint powers have been examined, not all segment rotations on which positive powers are exerted necessarily contribute to forward propulsion; details regarding horizontal power remain unclear. Here we show the contributions of segment rotations to the forward and upward propulsion. We calculated the joint power exerted on each segment and the contributions from segment rotations to the normalised average horizontal and vertical external powers (and) during the sprint start by 12 male sprinters. Over half(55 ± 6%) is due to the front thigh rotation (0.30 ± 0.04), on which the hip and knee exert positive power. Pelvic rotation does not contribute to(0.00 ± 0.01). This highlights the importance of the hip-extensors strength and the need for it accompanied by the lumbar-extensors strength cancelling out the hip-extensors action on the pelvis and promoting hip-extensor-induced thigh rotation. The front thigh rotation decreases(−0.08 ± 0.02).is primarily induced by rotations of the thorax (0.04 ± 0.01), lumbar region (0.06 ± 0.02), and pelvis (0.04 ± 0.01). Rotations of the lower-limb segments did not contribute to upward propulsion. Therefore, the front thigh induces downward movement, which is counterbalanced by the trunk segments. We bridge the gap in the current understanding from joint power to. We present a case involving segments on which positive joint powers are exerted similarly but play different roles: forward or upward propulsion, thereby providing insights into directional control mechanisms in explosive initiation of motion.HIGHLIGHTSWe examined the contributions of segment rotations to the normalised average horizontal and vertical external powers (,): the sprint start performance and the parameter to assess upward propulsion.Over half the total(55 ± 6%) is due to the front thigh rotation, while the front thigh rotation decreases, which was counterbalanced by rotations of the thorax, lumbar region, and pelvis.We bridge the gap in the current understanding from joint power toand further present a case involving segments on which positive joint powers are exerted but play different roles: forward or upward propulsion.
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冲刺期间的肌电图和机械变化从不同的前块倾斜度开始。
影响因子：
4.1
作者：
N. Guissard;J. Duchateau;K. Hainaut
通讯作者：
K. Hainaut
第二版
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
Fujita J. Springer;Berlin;Schwab;M.(ed.)
通讯作者：
M.(ed.)
影响因子：
2.2
作者：
Ohshima, Yuji;Bezodis, Neil E.;Nagahara, Ryu
通讯作者：
Nagahara, Ryu
影响因子：
3.7
作者：
Willwacher S;Herrmann V;Heinrich K;Funken J;Strutzenberger G;Goldmann JP;Braunstein B;Brazil A;Irwin G;Potthast W;Brüggemann GP
通讯作者：
Brüggemann GP
影响因子：
2.2
作者：
Bezodis, Neil E.;Salo, Aki I. T.;Trewartha, Grant
通讯作者：
Trewartha, Grant