Maturation of gait dynamics: stride-to-stride variability and its temporal organization in children
Maturation of gait dynamics: stride-to-stride variability and its temporal organization in children
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DOI：
10.1152/jappl.1999.86.3.1040
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发表时间：
1999-03-01
影响因子：
3.3
通讯作者：
Goldberger, AL
中科院分区：
文献类型：
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作者：
Hausdorff, JM;Zemany, L;Goldberger, AL
在非常年幼的儿童中，不成熟的姿势和步态控制导致不稳定的运动。在3岁以下的儿童中，步态似乎相对成熟;然而，尚不清楚超过这个年龄后行走的动力学是否会发生变化。由于步幅动力学依赖于神经控制，我们假设运动控制将在3岁以后继续发展。为了验证这一假设，我们测量了50名健康的3至14岁儿童（25名女孩）的步态周期持续时间的基础上一步一步的。3岁和4岁儿童的步幅变异性测量值显著大于6岁和7岁儿童，6岁和7岁儿童的步幅变异性测量值显著大于11岁至14岁儿童。步态的时间组织的测量也显示了显着的年龄依赖性变化。年龄的影响甚至在调整身高后仍然存在。这些研究结果表明，成熟的步幅动力学可能没有完全发展，即使在健康的7岁儿童和步幅动力学的不同方面在不同的年龄成熟。
In very young children, immature control of posture and gait results in unsteady locomotion. In children of similar to 3 yr of age, gait appears relatively mature; however, it is unknown whether the dynamics of walking change beyond this age. Because stride dynamics depend on neural control, we hypothesized that motor control would continue to develop beyond age 3. To test this hypothesis, we measured the gait cycle duration on a stride-by-stride basis in 50 healthy 3- to 14-yr-old children (25 girls). Measurements of stride-to-stride variability were significantly larger both in the 3- and 4-yr-old children, compared with the 6- and 7-yr-old children, and in the 6- and 7-yr-old children, compared with the 11- to 14-yr-old children. Measurements of the temporal organization of gait also revealed significant age-dependent changes. The effects of age persisted even after adjusting for height. These findings indicate that mature stride dynamics may not be completely developed even in healthy 7-yr-old children and that different aspects of stride dynamics mature at different ages.