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European Journal of Applied Physiology

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11.12.2019 | Original Article

Prolonged cooling with phase change material enhances recovery and does not affect the subsequent repeated bout effect following exercise

verfasst von: Susan Y. Kwiecien, Denis J. O’Hara, Malachy P. McHugh, Glyn Howatson

Erschienen in: European Journal of Applied Physiology | Ausgabe 2/2020

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Abstract

Purpose

The aim of this investigation was twofold: (1) to examine the effect of prolonged phase change material (PCM) cooling following eccentric exercise of the quadriceps on indices of muscle damage, and (2) to elucidate whether application of PCM cooling blunted the acute adaptive response to eccentric exercise, known as the repeated bout effect (RBE).

Methods

Twenty-six males (25 ± 6 years) performed an initial bout (B1) of 120 eccentric quadriceps contractions on each leg at 90% of their isometric strength and were then randomized to receive PCM packs frozen at 15 °C (treatment) or melted packs (control) worn directly on the skin under shorts for 6 h. The protocol was repeated 14 days later (B2) with all participants receiving the control condition.

Results

PCM cooling provided protection against strength loss in B1 (P = 0.005) with no difference in strength between treatment groups in B2 (P = 0.172; bout by treatment by time P = 0.008). PCM cooling reduced soreness in B1 (P = 0.009) with no difference between treatment groups in B2 (P = 0.061). Soreness was overall lower following B2 than B1 (P < 0.001). CK was elevated in B1 (P < 0.0001) and reduced in B2 (P < 0.001) with no difference between treatments. The damage protocol did not elevate hsCRP in B1, with no difference between treatments or between bouts.

Conclusions

This work provides further evidence that PCM cooling enhances recovery of strength and reduces soreness following eccentric exercise. Importantly, these data show for the first time that prolonged PCM cooling does not compromise the adaptive response associated with the RBE.

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Titel: Prolonged cooling with phase change material enhances recovery and does not affect the subsequent repeated bout effect following exercise
verfasst von: Susan Y. Kwiecien
Denis J. O’Hara
Malachy P. McHugh
Glyn Howatson
Publikationsdatum: 11.12.2019
Verlag: Springer Berlin Heidelberg
Erschienen in: European Journal of Applied Physiology / Ausgabe 2/2020
Print ISSN: 1439-6319
Elektronische ISSN: 1439-6327
DOI: https://doi.org/10.1007/s00421-019-04285-5

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Prolonged cooling with phase change material enhances recovery and does not affect the subsequent repeated bout effect following exercise

Abstract

Purpose

Methods

Results

Conclusions

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Das Geschlechterparadoxon in der gesundheitlich beeinträchtigten Lebenszeit – Ende eines Mythos?

Gesunde Lebenserwartung: Ein kritischer Blick auf Nutzen und Potenziale des demographischen Gesundheitsindikators

Wie hat sich die Lebenserwartung ohne funktionelle Einschränkungen in Deutschland entwickelt? Eine Analyse mit Daten des Deutschen Alterssurveys (DEAS)

Hitzeschutz im Fokus der hessischen Betreuungs- und Pflegeaufsicht

Live-Webinar "Urologie und Sexualmedizin in der Praxis"

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Abstract

Purpose

Methods

Results

Conclusions

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