Clin Physiol Funct Imaging (2015) 35, pp258–266

doi: 10.1111/cpf.12159

Assessment of the upper body contribution to multiple-sprint cycling in men and women Marie Clare Grant1,2, Hugh Watson1 and Julien S. Baker1 1

Institute of Clinical Exercise and Health Science, Exercise Science Research Laboratory, School of Science, Faculty of Science and Technology, University of the West of Scotland, Hamilton, UK and 2Division of Sport and Exercise Sciences, School of Social & Health Sciences, Abertay University, Dundee, UK

Summary Correspondence Marie Clare Grant, Division of Sport and Exercise Sciences, School of Social & Health Sciences, Abertay University, Bell Street, Dundee, Scotland DD1 1HG, UK E-mail: [email protected]

Accepted for publication Received 25 February 2014; accepted 11 April 2014

Key words intermittent; median frequency; power spectrum; submaximal; surface electromyography

The aim of this study was to investigate the effect of repeated cycling sprints on power profiles while assessing upper body muscle contraction. Eighteen physically active participants performed 8 9 10 s repeated sprints while muscle activity was recorded via surface electromyography (sEMG) from the brachioradialis (BR), biceps brachii (BB), triceps brachii (TB) and upper trapezius (UT). Measurements were obtained at rest, during a functional maximum contraction (FMC) while participants were positioned in a seated position on the cycle ergometer and during the repeated sprint protocol. Results suggest that mainly type I muscle fibres (MFs) are being recruited within the upper body musculature due to the submaximal and intermittent nature of the contractions. Subsequently, there is no evidence of upper body fatigue across the sprints, which is reflected in the lack of changes in the median frequency of the power spectrum (P

Assessment of the upper body contribution to multiple-sprint cycling in men and women.

The aim of this study was to investigate the effect of repeated cycling sprints on power profiles while assessing upper body muscle contraction. Eight...
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