Kinematic covariation in pediatric, adult and elderly subjects : Is gait control influenced by age?
(2012) Clinical Biomechanics — Vol. 27, n° 6, p. 568-572 (2012)
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- BACKGROUND: In human walking, kinematics of lower limb segments covary. Our objective was to assess the impact of age at different speeds (slow, medium and fast) on kinematic segmental covariation in normal subjects. METHODS: Thirty subjects ranged into 6 age groups ("5years", "10years", "15years", "20years" and "70years") were included. We performed a gait analysis on a treadmill at 3 predetermined speeds: 1 (slow), 3 (medium) and 5 (fast) kmh(-1), except for the 5years group who was unable to walk at 5kmh(-1). Kinematic segmental covariation was computed and represented by a 3D-loop, described by a principal component analysis (Borghese's methodology). We studied the percentage of variance of each component of the principal component analysis, knowing that the percentage of variance of the first and the second components reflected the shape of the loop, and that the percentage of variance of the third component was an index of its planarity. The effect of age was tested using a one-way analysis of variance. FINDINGS: When comparing the age groups at the same speed, we found a significant difference in the percentage of variance of the first and the second components between the 5 and the 10years at 3kmh(-1). We also noticed a difference in the percentage of variance of the third component at 5kmh(-1) between the 10years and the 15 and 20years groups. INTERPRETATION: We observed that kinematic covariation remains stable throughout adulthood between 15 and 70years old at slow, medium and fast speed. In children, a mature percentage of variance of the first and the second components is acquired from 10years old and a mature percentage of variance of the third component from 15years old.
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Bleyenheuft, C., & Detrembleur, C. (2012). Kinematic covariation in pediatric, adult and elderly subjects : Is gait control influenced by age? Clinical Biomechanics, 27(6), 568-572. https://doi.org/10.1016/j.clinbiomech.2012.01.010 (Original work published 2012)