Bilateral and anterior-posterior muscular imbalances in swimmers

The purpose of this study was to determine the relative magnitude of bilateral and anterior-posterior differences in swimmers. Peak band force was measured during aquatic exercise (horizontal arm abduction and adduction in a Standing position) and swimming (freestyle and backstroke). The peak force values were significantly higher (p<.01) for exercise adduction than abduction and for the swim stroke with the arm in the adducted position (freestyle) rather than the abducted position (backstroke) . The magnitude of the anterior-posterior difference was large for both exercise (1.5o) and swimming (.8o). Bilateral differences were trivial (.1o, ns) in comparison. A training regimen that strengthens the arm abductors may not only decrease the incidence of injuries in all four strokes, but also increase hand force and, therefore, improve performance in backstroke.
© Copyright 2006 Biomechanics and Medicine in Swimming X. Published by Faculdade de Desporto da Universidade do Porto. All rights reserved.

Subjects: swimming sport physiology muscle muscle physiology balance
Notations: biological and medical sciences endurance sports
Published in: Biomechanics and Medicine in Swimming X
Editors: J. P. Vilas-Boas, F. Alves, A. Marques
Published: Porto Faculdade de Desporto da Universidade do Porto 2006
Edition: Revista Portuguesa de Ciencias do Desporto
Volume: 6
Issue: Suppl. 2
Pages: 327-328
Document types: congress proceedings
research paper
Language: English
Level: advanced