Individual profiles of spatio-temporal coordination in high intensity swimming
Individual profiles of spatio-temporal coordination in high intensity swimming
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DOI：
10.1016/j.humov.2012.01.006
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发表时间：
2012-10-01
影响因子：
2.1
通讯作者：
Fernandes, Ricardo J.
中科院分区：
文献类型：
--
作者：
Figueiredo, Pedro;Seifert, Ludovic;Fernandes, Ricardo J.
本研究的目的是检查高强度自由泳期间臂间协调性的受试者间差异。 10 名男子游泳运动员以比赛配速游了 200 米自由泳。两台水上摄像机和四台水下摄像机对测试进行了录像，并使用 APAS 评估 3D 解剖点位置，并随后计算角位置、速度和连续相对相位，用于分析 200 m 前泳项目每 50 m 圈的两个手臂划水周期期间的上肢耦合。对两个手臂划动周期的运动学进行过滤并标准化为总周期持续时间。观察到由疲劳引起的生物力学和协调（时间）参数显着下降。平均连续相对相位曲线的地形显示两组之间较高的受试者间变异性（63.1 度与 76.0 度；p < .05），表明存在多种肢体间协调特征。协调分析产生了两个集群，这主要源于有机体限制（即游泳者的技术）。 (C) 2012 Elsevier B.V. 保留所有权利。
The aim of the present study was to examine the inter-subject variability in inter-arm coordination during front crawl swimming at high intensity. Ten male competitive swimmers swam 200 m front crawl at race pace. Two above water and four underwater cameras videotaped the test and APAS was used to assess the 3D anatomical points position and to calculate, afterwards, the angular position, velocity and the continuous relative phase, which was used to analyze upper limbs coupling during two arm stroke cycles for each 50 m lap of the 200 m front crawl event. The kinematics of the two arm stroke cycles was filtered and normalized to the total cycle duration. A significant decrease, caused by fatigue, was observed in the biomechanical and coordinative (temporal) parameters. The topography of the mean continuous relative phase curve showed a higher inter-subject variability between two groups (63.1 degrees vs. 76.0 degrees; p < .05), suggesting that several profiles of inter-limb coordination exist. Two clusters arose from the coordination profiling, which mainly stemmed from organismic constraints (i.e., the swimmer's technique). (C) 2012 Elsevier B.V. All rights reserved.