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2015 Raccuglia et al muscle temperature warming blood flow and optimisation.pdf (650.95 kB)

Post-warm-up muscle temperature maintenance: blood flow contribution and external heating optimisation

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posted on 2015-12-08, 13:34 authored by Margherita Raccuglia, Alex LloydAlex Lloyd, Davide Filingeri, Steve Faulkner, Simon HodderSimon Hodder, George HavenithGeorge Havenith
Purpose: Passive muscle heating has been shown to reduce the drop in post-warm-up muscle temperature (Tm) by about 25 % over 30 min, with concomitant sprint/power performance improvements. We sought to determine the role of leg blood flow in this cooling and whether optimising the heating procedure would further benefit post-warm-up Tm maintenance. Methods: Ten male cyclists completed 15-min sprint-based warm-up followed by 30 min recovery. Vastus lateralisTm (Tmvl) was measured at deep-, mid- and superficial-depths before and after the warm-up, and after the recovery period (POST-REC). During the recovery period, participants wore water-perfused trousers heated to 43 °C (WPT43) with either whole leg heating (WHOLE) or upper leg heating (UPPER), which was compared to heating with electrically heated trousers at 40 °C (ELEC40) and a non-heated control (CON). The blood flow cooling effect on Tmvl was studied comparing one leg with (BF) and without (NBF) blood flow. Results: Warm-up exercise significantly increased Tmvl by ~3 °C at all depths. After the recovery period, BF Tmvl was lower (~0.3 °C) than NBF Tmvl at all measured depths, with no difference between WHOLE versus UPPER. WPT43 reduced the post-warm-up drop in deep-Tmvl (−0.12 °C ± 0.3 °C) compared to ELEC40 (−1.08 ± 0.4 °C) and CON (−1.3 ± 0.3 °C), whereas mid- and superficial-Tmvl even increased by 0.15 ± 0.3 and 1.1 ± 1.1 °C, respectively. Conclusion: Thigh blood flow contributes to the post-warm-up Tmvl decline. Optimising the external heating procedure and increasing heating temperature of only 3 °C successfully maintained and even increased Tmvl, demonstrating that heating temperature is the major determinant of post-warm-up Tmvl cooling in this application.

History

School

  • Sport, Exercise and Health Sciences

Published in

European Journal of Applied Physiology

Volume

116

Pages

395 - 404

Citation

RACCUGLIA, M. ...et al., 2015. Post-warm-up muscle temperature maintenance: blood flow contribution and external heating optimisation. European Journal of Applied Physiology, pp. 1-10.

Publisher

© The Authors. Published by Springer.

Version

  • VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/

Acceptance date

2015-11-04

Publication date

2015-11-21

Copyright date

2016

Notes

This is an Open Access Article. It is published by Springer under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/

ISSN

1439-6319

eISSN

1439-6327

Language

  • en

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