首页> 外文期刊>Frontiers in Medicine >Kinematic Changes during Prolonged Fast-Walking in Old and Young Adults
【24h】

Kinematic Changes during Prolonged Fast-Walking in Old and Young Adults

机译:老年人和年轻人长时间快走时的运动学变化

获取原文
       

摘要

Walking biomechanics is known to be influenced by speed. However, most of the research examining the effects of walking speed and gait characteristics has been conducted after a fast-walking task, neglecting the changes that may occur during the task. The aim of the present study was to determine the impact of fast-walking over time on kinematics in young and old adults. Twenty-seven young adults (26.6 ± 6.0 years) and 23 old adults (71.0 ± 5.6 years) walked at 70% of their maximum heart rate for 20 min or until exhaustion, and the effects of fast-walking on temporospatial parameters and on angular kinematics were analyzed during the activity. During the protocol, both age-groups increased step-width variability. Significant effects of time were found for the ankle and hip at toe off for the older group. For the younger group, only the ankle angle at heel strike changed over time. For both groups, fast-walking induced changes in the coordination among the lower-limb angles that were more prominent during the swing phase of the gait. In conclusion, lower-limb kinematics changes in young adults were compatible with early signs of fatigue. The increased step-width variability in older adults may indicate an augmented risk of falling. Changes in the lower-limb walking kinematics of old adults suggest that the adjustments for weight acceptance and body propulsion were restricted to the hip and ankle joints. The kinematic changes among the lower-limb joint angles during the swing phase may compromise the quality of gait. These findings provide a foundation for future studies in the assessment of the risk of falls in older adults associated with walking at a faster pace.
机译:步行生物力学受速度影响。但是,大多数检查步行速度和步态特征影响的研究都是在快速步行任务之后进行的,而忽略了在任务期间可能发生的变化。本研究的目的是确定随着时间的推移快步走对年轻人和老年人的运动学的影响。二十七岁的年轻人(26.6±6.0岁)和23岁的成年人(71.0±5.6岁)以最大心率的70%行走20分钟或直至疲惫,以及快步走对颞pat参数和成角的影响活动期间对运动学进行了分析。在协议期间,两个年龄组均增加步长变异性。对于年龄较大的组,时间对脚踝和髋部的影响显着。对于较年轻的组,只有脚后跟触角会随时间改变。对于这两组,快步走都引起下肢角度协调性的变化,而步态的摆动阶段则更为明显。总之,青年人的下肢运动学变化与疲劳的早期迹象相吻合。老年人步长变异性的增加可能表明跌倒的风险增加。老年人下肢行走运动学的变化表明,体重接受和身体推进的调整仅限于髋关节和踝关节。摆动阶段下肢关节角度之间的运动变化可能会损害步态的质量。这些发现为将来评估与较快步伐相关的老年人跌倒风险提供了基础。

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