...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Gait & posture >Kinetic patterns of treadmill walking in preadolescents with and without Down syndrome
【24h】

Kinetic patterns of treadmill walking in preadolescents with and without Down syndrome

机译：患有和不患有唐氏综合症的青春期前跑步机的运动模式

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study investigated the effect of both walking speed and external ankle load on the kinetic patterns of treadmill walking in preadolescents with and without Down syndrome (DS). Ten preadolescents with DS and ten age- and gender-matched children with typical development (TD) participated in this study. We manipulated two treadmill speeds and two external ankle loads. Treadmill speeds were equal to 75% and 100% of the preferred overground walking speed. Two load conditions were with and without external ankle load which was equal to 2% of body weight on each side. We used an instrumented treadmill to collect vertical ground reaction force (GRF). Both timing and magnitude of peak GRFs, the loading and unloading rates, and various impulses were calculated from the GRF data. The results show that the DS group produced a shorter duration of propulsion, a lower FZ2 (second peak GRF) and vertical propulsive impulse, a higher loading rate and a lower unloading rate than the TD group. At a faster treadmill speed the DS group increased the duration of propulsion, the unloading rate and the vertical propulsive impulse, but reduced the magnitude of FZ2. External ankle load helped the DS group increase FZ2 and vertical propulsive impulse and might facilitate the push off and the initiation of leg swing during treadmill walking. External ankle load may therefore be included in the future physical intervention and exercise programs for the DS group to strengthen leg muscles and develop more efficient push off during locomotion.
机译：这项研究调查了步行速度和外部踝关节负荷对患有和不患有唐氏综合症（DS）的青春期前跑步机行走动力学模式的影响。十名DS青春期儿童和十名年龄和性别匹配的典型发育（TD）儿童参加了这项研究。我们操纵了两个跑步机速度和两个外部脚踝负载。跑步机速度等于首选地面行走速度的75％和100％。在有和没有外部脚踝负荷的情况下，有两种负荷条件，即每侧的重量等于体重的2％。我们使用仪器式跑步机来收集垂直地面反作用力（GRF）。从GRF数据中计算出了峰值GRF的时间和幅度，加载和卸载速率以及各种脉冲。结果表明，与TD组相比，DS组产生的推进时间更短，FZ2（第二峰值GRF）和垂直推进冲动更低，装载速率更高，卸载速率更低。在更快的跑步机速度下，DS组增加了推进的持续时间，卸载速率和垂直推进脉冲，但减小了FZ2的大小。外部踝关节负荷帮助DS组增加FZ2和垂直推进力，并可能有助于在跑步机行走过程中推开和引发腿部摆动。因此，外部踝关节负荷可能会包括在DS组将来的身体干预和锻炼计划中，以增强腿部肌肉并在运动过程中产生更有效的推举。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号