Influence of Lower Body Pressure Support on the Walking Patterns of Healthy Children and Adults

被引:4
|
作者
Kurz, Max J. [1 ]
Deffeyes, Joan E. [1 ]
Arpin, David J. [1 ]
Karst, Gregory M. [2 ]
Stuberg, Wayne A. [1 ]
机构
[1] Univ Nebraska Med Ctr, Munroe Meyer Inst Genet & Rehabil, Omaha, NE 68198 USA
[2] Univ Nebraska Med Ctr, Sch Allied Hlth Profess, Div Phys Therapy Educ, Omaha, NE USA
关键词
gait; walking; biomechanics; body weight support; locomotion; WEIGHT SUPPORT; POSITIVE-PRESSURE; TREADMILL WALKING; CEREBRAL-PALSY; GAIT; LOCOMOTION; GRAVITY; SPEED; KINEMATICS; VELOCITY;
D O I
10.1123/jab.28.5.530
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
The purpose of this investigation was to evaluate the effect of a lower body positive pressure support system on the joint kinematics and activity of the lower extremity antigravity musculature of adults and children during walking. Adults (age = 25 +/- 4 years) and children (age = 13 +/- 2 years) walked at a preferred speed and a speed that was based on the Froude number, while 0-80% of their body weight was supported. Electrogoniometers were used to monitor knee and ankle joint kinematics. Surface electromyography was used to quantify the magnitude of the vastus lateralis and gastrocnemius muscle activity. There were three key findings: (1) The lower extremity joint angles and activity of the lower extremity antigravity muscles of children did not differ from those of adults. (2) The magnitude of the changes in the lower extremity joint motion and antigravity muscle activity was dependent upon an interaction between body weight support and walking speed. (3) Lower body positive pressure support resulted in reduced activation of the antigravity musculature, and reduced range of motion of the knee and ankle joints.
引用
收藏
页码:530 / 541
页数:12
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