Postural control in obese adolescents assessed by limits of stability and gait initiation
Postural control in obese adolescents assessed by limits of stability and gait initiation
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DOI：
10.1016/j.gaitpost.2007.11.006
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发表时间：
2008-07-01
期刊：
影响因子：
2.4
通讯作者：
Thoumie, P.
中科院分区：
文献类型：
--
作者：
Colne, P.;Frelut, M. L.;Thoumie, P.
与肥胖相关的姿势控制和运动活动的生物力学变化仍未完全了解。本研究的目的是评估当需要稳定和运动的体重因肥胖而增加时，静态和动态平衡控制的适应性。在一项包括一组肥胖青少年和一组正常体重青少年的病例对照研究中，比较了慢速和快速时的姿势稳定性极限和步态起始。超重的后果从肥胖组的动态稳定性的结果比静态平衡的结果更明显。表征步态进展速度的生物力学参数值较低，以及快速条件下摆动阶段持续时间较长，表明肥胖是一个减缓因素。然而，肥胖组的姿势稳定性极限降低，他们无法像对照组那样增加预期相持续时间，双支撑相持续时间的增加以及控制重心下降的一些困难表明，在这些受试者中，采用了一种适应性策略，通过限制前进速度来保持平衡。(C) 2007 Elsevier B.V.版权所有
The biomechanical changes in postural control and in motor activities linked to obesity are still not fully understood. The aim of this study was to assess the adaptation in static and dynamic control of equilibrium when the body mass to be stabilized and moved is increased through obesity. Postural stability limits and gait initiation at slow and fast velocities were compared in a case control study that included a group of obese adolescents and a control group of adolescents with normal weight.The consequences of overweight are more clearly evident from the results on dynamic stability of the obese group than those on static equilibrium. Both the lower values of the biomechanical parameters characterizing the progression velocity of gait and the longer duration of the swing phase for the fast velocity condition suggest that obesity acts as a slowing factor. However, the reduction of the postural stability limits of the obese group, their inability to increase the anticipatory phase duration unlike the control group, the increase in the double support phase duration as well as some difficulty in controlling the fall of the centre of gravity suggest that, in these subjects, an adaptive strategy is adopted to preserve equilibrium by limiting progression velocity. (C) 2007 Elsevier B.V. All rights reserved.