Influence of age on neuromuscular control during a dynamic weight-bearing task.

Influence of age on neuromuscular control during a dynamic weight-bearing task.
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DOI:
10.1123/japa.17.3.327
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发表时间:
2009-07
影响因子:
1.5
通讯作者:
Shields RK
Shields RK
中科院分区:
医学4区
文献类型:
--
作者:
Madhavan S;Burkart S;Baggett G;Nelson K;Teckenburg T;Zwanziger M;Shields RK

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神经肌肉控制策略可能会随着年龄的增长而变化,并使老年人容易遭受膝关节损伤。本研究的目的是确定在新的单肢深蹲(SLS)任务中,年轻人和老年人的长潜伏反应(LLR)、肌肉激活模式和运动准确性是否存在差异。 10 名年轻人和 10 名老年受试者在匹配计算机生成的正弦目标时执行了一系列电阻 SLS(~0-30 度)。 SLS 装置对膝盖运动提供 16% 体重的阻力。当膝盖受到干扰时,年轻人和老年人都表现出显着的超调误差(p < 0.05)。年轻人和老年人的跟踪任务准确性相似 (p=0.34),但与年轻受试者相比,老年人需要更多的肌肉活动 (p < 0.05)。老年组的长潜伏期反应 (LLR) 大于年轻组 (p < 0.05)。这些结果支持膝盖的神经肌肉控制随着年龄的增长而变化,并可能导致损伤。
Neuromuscular control strategies may change with age and predispose elderly to knee joint injury. The purposes of this study were to determine if long latency responses (LLR), muscle activation patterns, and movement accuracy differs between the young and elderly during a novel single limb squat (SLS) task. Ten young and ten elderly subjects performed a series of resistive SLS (~0–30 degrees) while matching a computer-generated sinusoidal target. The SLS device provided a 16% body weight resistance to knee movement. Both young and elderly showed significant overshoot error when the knee was perturbed (p < 0.05). Accuracy of the tracking task was similar between the young and elderly (p=0.34), but the elderly required more muscle activity compared to the younger subjects (p < 0.05). The elderly group had larger long latency responses (LLRs) than the younger group (p < 0.05). These results support that neuromuscular control of the knee changes with age, and may contribute to injury.
DOI: 10.1249/00005768-198205000-00012
发表时间: 1982-01-01
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