INFLUENCE OF ELECTRICAL-STIMULATION OF THE TIBIALIS ANTERIOR MUSCLE IN PARAPLEGIC SUBJECTS .1. CONTRACTILE PROPERTIES

被引：57

作者：

ROCHESTER, L ^{[1
]}

CHANDLER, CS ^{[1
]}

JOHNSON, MA ^{[1
]}

SUTTON, RA ^{[1
]}

MILLER, S ^{[1
]}

机构：

[1] NORTHUMBRIA UNIV,INST HLTH SCI,NEWCASTLE TYNE NE7 7XA,TYNE & WEAR,ENGLAND

来源：

PARAPLEGIA | 1995年 / 33卷 / 08期

关键词：

SKELETAL MUSCLE; CONTRACTILE PROPERTIES; ELECTRICAL STIMULATION; PARAPLEGIC SUBJECTS;

D O I：

10.1038/sc.1995.97

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

In adult paraplegic subjects one tibialis anterior muscle received daily electrical stimulation for 4 weeks at twice motor threshold to determine changes of its contractile properties (this paper) and its morphological and histochemical profiles (following paper).(1) Force, speed of contraction and fatigue resistance were assessed by percutaneous electrical stimulation of the muscle with torque measured about the ankle. Comparative contractile tests were performed on 51 normal adult subjects and new parameters for force measurement proposed, particularly where maximum voluntary contraction cannot be obtained. In paraplegic subjects before stimulation the tibialis anterior muscle showed evidence of disuse with decreased force, faster contraction and relaxation, and reduced fatigue resistance. The effects of two stimulus patterns were compared: 10 Hz, and 10 Hz with 100 Hz bursts. After stimulation contraction was slower, fatigue resistance increased and there was a tendency for force to increase. No differences occurred using the different stimulus patterns. Four weeks later fatigue resistance was partially maintained, while speed of contraction reverted to pre-stimulus levels.

引用

页码：437 / 449

页数：13

共 44 条

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