Does cycling effect motor coordination of the leg during running in elite triathletes?

Chapman, Andrew R., Vicenzino, , Bill, Blanch, Peter, Dowlan, Steve and Hodges, Paul W. (2008) Does cycling effect motor coordination of the leg during running in elite triathletes?. Journal of Science and Medicine in Sport, 11 4: 371-380. doi:10.1016/j.jsams.2007.02.008


Author Chapman, Andrew R.
Vicenzino, , Bill
Blanch, Peter
Dowlan, Steve
Hodges, Paul W.
Title Does cycling effect motor coordination of the leg during running in elite triathletes?
Journal name Journal of Science and Medicine in Sport   Check publisher's open access policy
ISSN 1440-2440
Publication date 2008-07
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.jsams.2007.02.008
Volume 11
Issue 4
Start page 371
End page 380
Total pages 10
Editor Gregory Kolt
Place of publication Amsterdam, The Netherlands
Publisher Elsevier
Collection year 2008
Language eng
Subject 321402 Biomechanics
321403 Motor Control
321405 Sports Medicine
730303 Occupational, speech and physiotherapy
C1
920201 Allied Health Therapies (excl. Mental Health Services)
110317 Physiotherapy
110603 Motor Control
110604 Sports Medicine
Abstract Triathletes report incoordination when running after cycling. We investigated the influence of the transition from cycling to running on leg movement and muscle recruitment during running in elite international level triathletes. Leg movement (three-dimensional kinematics) and tibialis anterior (TA) muscle activity (surface electromyography) were compared between a control-run (no prior exercise) and a 30-min transition-run (preceded by 20 min of cycling; i.e., run versus cycle-run). The role of fatigue in motor changes was also investigated. Leg kinematics were not different between control- and transition-runs in any triathlete. Recruitment of TA was different in 5 of 14 triathletes, in whom altered TA recruitment patterns during the transition-run were more similar to recruitment patterns of TA during cycling. Changes in TA recruitment during the transition-run were not associated with altered force production of TA or other leg muscles during isometric fatigue testing, or myoelectric indicators of fatigue (median frequency, average rectified value). These findings suggest that short periods of cycling do not influence running kinematics or TA muscle activity in most elite triathletes. However, our findings are evidence that leg muscle activity during running is influenced by cycling in at least some elite triathletes despite their years of training. This influence is not related to kinematic variations and is unlikely related to fatigue but may be a direct effect of cycling on motor commands for running.
Keyword Electromyography (EMG)
Three-dimensional (3D) kinematics
Triathlon
Motor control;
Motor learning
Fatigue
Q-Index Code C1
Q-Index Status Confirmed Code
Additional Notes Available online 26 April 2007.

 
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Created: Thu, 08 May 2008, 15:30:23 EST by Sophie Jordan on behalf of School of Health & Rehabilitation Sciences