Vogt L, Pfeifer K, Banzer W
Department of Sports Medicine, Institute of Sports Sciences, Johann Wolfgang Goethe-University, Ginnheimer Landstrasse 39, 60487, Frankfurt, Germany.
Clin Biomech (Bristol). 2002 Feb;17(2):162-5. doi: 10.1016/s0268-0033(01)00111-5.
To determine the differences between angular oscillation curves of the lumbar spine and pelvis during walkway and treadmill ambulation.
An in vivo observation of walking in overground and treadmill conditions.
Angular movements of the lumbar spine and pelvis have been obtained during overground and treadmill walking. No data are available to indicate whether lumbar spine treadmill findings may be compared or generalized to overground readings.
Nine male subjects walked at their natural cadence along an 8 m walkway positioned over a motorized treadmill. During each of 20 walking trials, kinematic data of one full gait cycle were collected in the middle segment of the walkway. Following the overground readings the walkway was removed and treadmill recordings were taken at the subjects' preferred walking speed and at an imposed speed of 1.25 m/s. Movement patterns and maximum oscillation angles were calculated in each plane.
Cross-correlation values of pairwise comparisons demonstrated almost comparable movement patterns between walking conditions (r > or =0.891; p<0.001) except for the movement in the sagittal plane (r=0.642, p<0.01). ANOVA for repeated measures revealed significant (p<0.05) differences in the gait cycle duration as well as reductions in oscillation amplitudes of the upper lumbar region and the pelvis in both the frontal and transverse plane during treadmill walking compared to walkway locomotion.
Statistically significant differences exist for some angular lumbar spine movement parameters between walkway and treadmill locomotion.
The observed differences between overground and treadmill locomotion should be taken in account when treadmill-based lumbar spine and pelvis kinematics want to be extended or compared to overground recordings.
确定在人行道行走和跑步机行走过程中腰椎和骨盆的角振荡曲线之间的差异。
在地面和跑步机条件下对行走进行体内观察。
已获取在地面行走和跑步机行走过程中腰椎和骨盆的角运动情况。尚无数据表明跑步机上关于腰椎的研究结果是否可与地面行走的读数进行比较或推广应用。
九名男性受试者以自然步频沿着位于电动跑步机上方的8米长人行道行走。在20次行走试验中的每次试验期间，在人行道中间段收集一个完整步态周期的运动学数据。在地面读数之后，移除人行道并以受试者偏好的步行速度以及1.25米/秒的设定速度进行跑步机记录。计算每个平面内的运动模式和最大振荡角度。
除矢状面运动外（r = 0.642，p < 0.01），成对比较的交叉相关值表明行走条件之间的运动模式几乎具有可比性（r≥0.891；p < 0.001）。重复测量方差分析显示，与在人行道上行走相比，跑步机行走期间步态周期持续时间存在显著差异（p < 0.05），并且上腰椎区域和骨盆在额面和横面的振荡幅度均减小。
人行道行走和跑步机行走之间，腰椎的一些角运动参数存在统计学上的显著差异。
当基于跑步机的腰椎和骨盆运动学想要扩展或与地面记录进行比较时，应考虑观察到的地面行走和跑步机行走之间的差异。
