EMG-Model of the backstroke start technique

Titelangaben

Hohmann, Andreas ; Fehr, Ulrich ; Kirsten, Robert ; Krüger, Tom:
EMG-Model of the backstroke start technique.
In: Biomechanics and Medicine in Swimming X : Xth International Symposium Biomechanics an Medicine in Swimming, Porto, Portugal, 2006. - Porto : Faculdade de Desporto da Universidade do Porto , 2006 . - S. 37-40 . - (Revista Portuguesa de Ciências do Desporto = Portuguese Journal of Sport Sciences ; 6 Suppl. 2 )

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Abstract

This study researched in more depth a 6-phase model that describes the time pattern and the activity level of the muscles while executing the backstroke start. Five male backstroke sprinters of the German national swim team performed four backstroke starts over a distance of 7.5 m. EMG-data were recorded by a water protected 8-channel EMG from eight arm, shoulder, trunk and leg muscles. To compare the quality of muscular activity patterns, the IDANCO-system served as a quantitative method. The EMG recordings in the 5 swimmers indicated a medium repetition consistency and reproducibility of the identified patterns of muscle activity. In the initial hang phase, and the final glide phase the EMG recordings of the first dolphin kick demonstrated an identical and analogue movement behaviour. During the flight phase, and especially during the water entry the number of different muscle activation patterns grew significantly