Interaction Between Thorax, Lumbar, and Pelvis Movements in the Transverse Plane During Gait at Three Velocities.
| Autor: | Ya-Ting Yang, Yasuyuki Yoshida, Tibor Hortobágyi, Shuji Suzuki |
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| Předmět: |
PELVIC physiology
TORSO physiology LUMBAR vertebrae physiology ANALYSIS of variance DIAGNOSIS GAIT in humans RANGE of motion of joints KINEMATICS PROBABILITY theory STATISTICS T-test (Statistics) DATA analysis TREADMILLS REPEATED measures design MOTION capture (Human mechanics) DATA analysis software |
| Zdroj: | Journal of Applied Biomechanics; Jun2013, Vol. 29 Issue 3, p261-269, 9p, 2 Diagrams, 1 Chart, 4 Graphs |
| Abstrakt: | We determined the angular range of motion and the relative timing of displacement in the thorax, lumbar spine, and pelvis in the transverse plane during treadmill walking at three velocities. Nine healthy young females walked on a treadmill for three minutes at 0.40, 0.93, and 1.47 m/s. The position of seven reflective markers and three rigs placed on the thorax, lumbar spine, and pelvis were recorded at 200 Hz by an eight-camera motion capture system. As gait velocity increased, stride length increased, cycle time decreased, and angular displacement in the thorax and L1 decreased but increased at the pelvis and L5 (all P < .05). The time of maximal angular rotation occurred in the following sequence: pelvis, L5, L3, L1, and thorax (P < .001). The thorax and L1 and L3 were in-phase for shorter duration as gait velocity increased, and this reduction was especially large, approx. 32% (P < .05), between thorax and pelvis. As gait velocity increased, the pelvis rotated earlier, causing the shortening of in-phase duration between thorax and pelvis. These data suggest that, as gait velocity increases, pelvis rotation dictates trunk rotation in the transverse plane during gait in healthy young females. [ABSTRACT FROM AUTHOR] |
| Databáze: | Complementary Index |
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