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首页> 外文期刊>Gait & posture >Effect of walking velocity on segment coordination during pre-planned turns in healthy older adults.
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Effect of walking velocity on segment coordination during pre-planned turns in healthy older adults.

机译：健康老年人在计划转弯期间步行速度对节段协调的影响。

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BACKGROUND: Despite the prevalence of turning in daily activities and the challenges it poses to mobility-impaired individuals, far less is known about the multi-segmental control of turning than the control of straight walking. Gait slows with aging and neurological disorders such as Parkinson's disease and falls in these populations frequently occur when turning. Nevertheless, the influence of walking velocity on the complex inter-segmental coordination of the head, trunk and lower limbs during turning has not been examined. The purpose of this study was to examine the effect of walking velocity on the coordination of segment reorientation during turns embedded in locomotion in healthy older adults. METHODS: Nineteen healthy older adults volunteered to participate. Participants made a 45 degrees or 90 degrees turn to their right while walking either at their natural self-selected speed or slower or faster than their natural speed. We quantified the timing and sequence of segments reorientation during the turns. RESULTS: There was a top-down temporal sequence in initiation of segments reorientation during turning, i.e., head turned first, followed by shoulder, pelvis, and mediolateral foot displacement. Furthermore, results indicate that the top-down temporal sequence in segments reorientation during turning was a robust behavior which was not affected by the walking velocity or magnitude of the turn. CONCLUSIONS: Walking velocity does not affect segment coordination during pre-planned turns in healthy elderly. Therefore, we conclude that changes in coordination of segments reorientation during pre-planned turns in individuals with neurological disorders such as Parkinson's disease is not due to their slower gait.
机译：背景：尽管日常活动中普遍存在转弯，并且给行动不便的人带来了挑战，但对多段转弯控制的了解要比对直走控制的了解少得多。步态随着衰老和神经系统疾病（如帕金森氏病）而减慢，转弯时经常发生这些人群的跌倒。然而，尚未研究步行速度对转弯时头部，躯干和下肢复杂的节间协调的影响。这项研究的目的是检查健康的成年人在运动过程中嵌入的转弯期间步行速度对节段重新定向的协调的影响。方法：十九名健康的老年人自愿参加。参与者以自然选择的速度或更慢或比自然速度快的速度行走时，向右转45度或90度。我们量化了转弯期间段重新定向的时间和顺序。结果：在转弯过程中，即先转头，然后是肩膀，骨盆和中外侧足移位的段开始重新定向时，存在自上而下的时间顺序。此外，结果表明，转弯过程中段重新定向的自上而下的时间顺序是一种鲁棒的行为，不受步行速度或转弯幅度的影响。结论：健康老年人在预先计划的转弯过程中步行速度不会影响节段的协调性。因此，我们得出结论，在患有神经系统疾病（如帕金森氏病）的个体的预先计划的转弯过程中，节段重新定向的协调性变化并非由于步态较慢而引起。

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