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Welchen stabilisierenden Effekt hat der Transversus abdominis?

Grenier SG, McGill SM. Quantification of lumbar stability by using 2 different abdominal activation strategies. Archives of Physical Medicine and Rehabilitation. 2007; 88: 54.

Abstract

Grenier SG, McGill SM. Quantification of lumbar stability by using 2 different abdominal activation strategies.

Objective

To determine whether the abdominal hollowing technique is more effective for lumbar spine stabilization than a full abdominal muscle cocontraction.

Design

Within-subject, repeated-measures analysis of variance was used to examine the effect of combining each of 4 loading conditions with either the hollow or brace condition on the dependent variables of stability and compression. A simulation was also conducted to assess the outcome of a person activating just the transversus abdominis during the hollow.

Setting

Laboratory.

Participants

Eight healthy men (age range, 20−33y).

Interventions

Electromyography and spine kinematics were recorded during an abdominal brace and a hollow while supporting either a bilateral or asymmetric weight in the hands.

Main Outcome Measures

Spine stability index and lumbar compression were calculated.

Results

In the simulation “ideal case,” the brace technique improved stability by 32%, with a 15% increase in lumbar compression. The transversus abdominis contributed .14% of stability to the brace pattern with a less than 0.1% decrease in compression.

Conclusions

Whatever the benefit underlying low-load transversus abdominis activation training, it is unlikely to be mechanical. There seems to be no mechanical rationale for using an abdominal hollow, or the transversus abdominis, to enhance stability. Bracing creates patterns that better enhance stability.

Key Words: Abdominal muscles; Back injuries; Low back pain; Motor skills; Rehabilitation; Spine


Supported by the Natural Sciences and Engineering Research Council of Canada (grant no. RGPIN36516-98).No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit upon the author(s) or upon any organization with which the author(s) is/are associated.
Corresponding Author Contact InformationReprint requests to Sylvain G. Grenier, PhD, Biomechanics, Ergonomics and Kinesiology Laboratory, School of Human Kinetics, Laurentian University, Sudbury, ON P3E 2C6, Canada.


Archives of Physical Medicine and Rehabilitation
Volume 88, Issue 1, January 2007, Pages 54-62

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