Three dimensional preparatory trunk motion precedes asymmetrical upper limb movement

被引：104

作者：

Hodges, PW

Cresswell, AG

Daggfeldt, K

Thorstensson, A

机构：

[1] Karolinska Inst, Dept Neurosci, Stockholm, Sweden

[2] Univ Coll Phys Educ & Sport, Dept Hlth & Sport Sci, Stockholm, Sweden

来源：

GAIT & POSTURE | 2000年 / 11卷 / 02期

关键词：

anticipatory postural adjustments; trunk; abdominal muscles; intra-abdominal pressure; biomechanical model;

D O I：

10.1016/S0966-6362(99)00055-7

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Three-dimensional trunk motion. trunk muscle electromyography and intra-abdominal pressure were evaluated to investigate the preparatory control of the trunk associated with voluntary unilateral upper limb movement. The directions of angular motion produced by moments reactive to limb movement in each direction were predicted using a three-dimensional model of the body. Preparatory motion of the trunk occurred in three dimensions in the directions opposite to the reactive moments. Electromyographic recordings from the superficial trunk muscles were consistent with preparatory trunk motion. However, activation of transversus abdominis was inconsistent with control of direction-specific moments acting on the trunk. The results provide evidence that anticipatory postural adjustments result in movements and not simple rigidification of the trunk. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：92 / 101

页数：10

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