Effects of Air-Pulsed Cryotherapy on Neuromuscular Recovery Subsequent to Exercise-Induced Muscle Damage

Abstract : Background: Localized cooling has been proposed as an effective strategy to limit the deleterious effects of exercise-induced muscle damage on neuromuscular function. However, the literature reports conflicting results. Purpose: This randomized controlled trial aimed to determine the effects of a new treatment, localized air-pulsed cryotherapy (–30°C), on the recovery time-course of neuromuscular function following a strenuous eccentric exercise. Study Design: Controlled laboratory study. Methods: A total of 24 participants were included in either a control group (CONT) or a cryotherapy group (CRYO). Immediately after 3 sets of 20 maximal isokinetic eccentric contractions of elbow flexors, and then 1, 2, and 3 days after exercise, the CRYO group received a cryotherapy treatment (3 x 4 minutes at –30°C separated by 1 minute). The day before and 1, 2, 3, 7, and 14 days after exercise, several parameters were quantified: maximal isometric torque and its associated maximal electromyographic activity recorded by a 64-channel electrode, delayed-onset muscle soreness (DOMS), biceps brachii transverse relaxation time (T2) measured using magnetic resonance imaging, creatine kinase activity, interleukin-6, and C-reactive protein. Results: Maximal isometric torque decreased similarly for the CONT (–33% ± 4%) and CRYO groups (–31% ± 6%). No intergroup differences were found for DOMS, electromyographic activity, creatine kinase activity, and T2 level averaged across the whole biceps brachii. C-reactive protein significantly increased for CONT (+93% at 72 hours, P<.05) but not for CRYO. Spatial analysis showed that cryotherapy delayed the significant increase f T2 and the decrease of electromyographic activity level for CRYO compared with CONT (between day 1 and day 3) in the medio-distal part of the biceps brachii. Conclusion: Although some indicators of muscle damage after severe eccentric exercise were delayed (ie, local formation of edema and decrease of muscle activity) by repeated air-pulsed cryotherapy, we provide evidence that this cooling procedure failed to improve long-term recovery of muscle performance. Clinical Relevance: Four applications of air-pulsed cryotherapy in the 3 days after a strenuous eccentric exercise are ineffective overall in promoting long-term muscle recovery. Further studies taking into account the amount of exercise-induced muscle damage would allow investigators to make stronger conclusions regarding the inefficiency of this recovery modality.
Type de document :
Article dans une revue
American Journal of Sports Medicine, SAGE Publications (UK and US), 2013, 41 (8), pp.1942-1951. 〈http://journals.sagepub.com/doi/abs/10.1177/0363546513490648〉. 〈10.1177/0363546513490648〉
Liste complète des métadonnées

https://hal-insep.archives-ouvertes.fr/hal-01491762
Contributeur : Documentation Insep <>
Soumis le : mercredi 3 mai 2017 - 11:48:50
Dernière modification le : jeudi 5 avril 2018 - 10:36:50

Identifiants

Collections

Citation

Gaël Guilhem, François Hug, Antoine Couturier, Stéphanie Regnault, Laure Bournat, et al.. Effects of Air-Pulsed Cryotherapy on Neuromuscular Recovery Subsequent to Exercise-Induced Muscle Damage. American Journal of Sports Medicine, SAGE Publications (UK and US), 2013, 41 (8), pp.1942-1951. 〈http://journals.sagepub.com/doi/abs/10.1177/0363546513490648〉. 〈10.1177/0363546513490648〉. 〈hal-01491762〉

Partager

Métriques

Consultations de la notice

55