Journal article
Neural and muscular adjustments following repeated running sprints
European Journal of Applied Physiology, Vol.109(6), pp.1027-1036
2010
Abstract
This study aimed to reveal the neural and muscular adjustments following a repeated-sprint (RS) running exercise. Sixteen subjects performed a series of neuromuscular tests before, immediately after and 30 min (passive recovery) post-RS exercise (12 × 40 m sprints interspaced by 30 s of passive recovery). Sprint times significantly lengthened over repetitions (+17% from the first to the last sprint; P < 0.05). After RS running exercise, maximal voluntary contraction torque of the plantar flexors (−11 ± 7.3%), muscle activation (twitch interpolation) (−2.7 ± 3.4%) and soleus maximal M-wave amplitude (−20 ± 17%) were significantly (P < 0.05) reduced but returned close to baseline after 30 min. Both soleus EMG activity and maximal Hoffmann reflex normalized with respect to M-wave amplitude did not change during the whole experiment. From pre- to post-RS exercise, evoked twitch response was characterized by lower peak torque and maximal rate of torque development (−13 and −11%, respectively, P < 0.05), but was not different from baseline after recovery. Peak tetanus at 20 and 80 Hz were 17 and 8% lower (P < 0.05) in the fatigued state, respectively. Acute muscle fatigue induced by RS running exercise is mainly peripheral as the short-term (30 min) recovery pattern of plantar flexors contractile properties follows that of the voluntary force-generating capacity.
Details
- Title
- Neural and muscular adjustments following repeated running sprints
- Authors/Creators
- S. Perrey (Author/Creator) - Université de MontpellierS. Racinais (Author/Creator) - Qatar Orthopaedic and Sports Medicine HospitalK. Saimouaa (Author/Creator) - Université de MontpellierO. Girard (Author/Creator) - Qatar Orthopaedic and Sports Medicine Hospital
- Publication Details
- European Journal of Applied Physiology, Vol.109(6), pp.1027-1036
- Publisher
- Springer Verlag
- Identifiers
- 991005544251207891
- Copyright
- © 2010 Springer-Verlag
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- 1 Clinical & Life Sciences
- 1.172 Sports Science
- 1.172.414 Training Optimization
- Web Of Science research areas
- Physiology
- Sport Sciences
- ESI research areas
- Clinical Medicine