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Combined active and passive heat exposure induced heat acclimation in a soccer referee before 2014 FIFA World Cup.
Springerplus 2016; 5:617S

Abstract

INTRODUCTION

The 2014 FIFA World Cup was held in Brazil, where the climatic conditions presented a significant thermoregulatory and perceptual challenge to those unfamiliar with the heat and humidity.

CASE PRESENTATION

This case report documents the adaptation induced by a novel mixed methods (isothermic and passive) heat acclimation (HA) regime for a northern European professional soccer match official prior to the tournament. The intervention involved 13 HA sessions over an 18 day period comprising five isothermic HA sessions whereby intermittent running was used to target and maintain tympanic temperature (Tytemp) at 38 °C for 90 min, and seven passive HA sessions of 48 °C water bathing for 30 min. The athlete performed a heat stress test (HST) (35 min running at four incremental intensities in 30 °C) and a repeated high-intensity running test (as many 30 s self-paced efforts as possible, to a maximum of 20, with 30 s passive recovery) before and after the intervention. The mixed methods HA regime increased plasma volume (+7.1 %), and sweat loss (+0.9 L h(-1)), reduced exercising Tytemp (-0.6 °C), and mean body temperature (-0.5 °C). High-intensity running performance improved after HA (+29 %), as did the perception of thermal comfort during exercise (-0.3 units).

CONCLUSION

This data evidences the effectiveness of a practical, mixed methods HA strategy, remotely implemented around training and competition, at inducing the heat acclimation phenotype in a high-level soccer match official.

Authors+Show Affiliations

A016 Collegiate Hall, Centre for Sport and Exercise Science, Sheffield Hallam University, Sheffield, South Yorkshire S10 2BP UK.Academy of Sport and Physical Activity, A209 Collegiate Hall, Sheffield Hallam University, Collegiate Crescent Campus, Eccelsall Road, Sheffield, S10 2BP UK.Department of Sport, Health and Nutrition, Leeds Trinity University, Brownberrie Lane, Horsforth, Leeds, LS18 5HD UK.Environmental Extremes Laboratory, Centre for Sport and Exercise Science and Medicine (SESAME), University of Brighton, Welkin Laboratories, Denton Road, Eastbourne, East Sussex BN20 7SR UK.Centre for Sports Medicine and Human Performance (CSMHP), Heinz Wolff Building, Brunel University London, Uxbridge, UB8 3PH UK.School of Sport and Health Sciences, George Building, Bangor University, Bangor, UK.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27330883

Citation

Ruddock, A D., et al. "Combined Active and Passive Heat Exposure Induced Heat Acclimation in a Soccer Referee Before 2014 FIFA World Cup." SpringerPlus, vol. 5, 2016, p. 617.
Ruddock AD, Thompson SW, Hudson SA, et al. Combined active and passive heat exposure induced heat acclimation in a soccer referee before 2014 FIFA World Cup. Springerplus. 2016;5:617.
Ruddock, A. D., Thompson, S. W., Hudson, S. A., James, C. A., Gibson, O. R., & Mee, J. A. (2016). Combined active and passive heat exposure induced heat acclimation in a soccer referee before 2014 FIFA World Cup. SpringerPlus, 5, p. 617. doi:10.1186/s40064-016-2298-y.
Ruddock AD, et al. Combined Active and Passive Heat Exposure Induced Heat Acclimation in a Soccer Referee Before 2014 FIFA World Cup. Springerplus. 2016;5:617. PubMed PMID: 27330883.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Combined active and passive heat exposure induced heat acclimation in a soccer referee before 2014 FIFA World Cup. AU - Ruddock,A D, AU - Thompson,S W, AU - Hudson,S A, AU - James,C A, AU - Gibson,O R, AU - Mee,J A, Y1 - 2016/05/13/ PY - 2016/02/19/received PY - 2016/05/06/accepted PY - 2016/6/23/entrez PY - 2016/6/23/pubmed PY - 2016/6/23/medline KW - Aerobic KW - Core temperature KW - Exercise KW - Hyperthermia KW - Interval training KW - Performance KW - Plasma volume KW - Thermoregulation SP - 617 EP - 617 JF - SpringerPlus JO - Springerplus VL - 5 N2 - INTRODUCTION: The 2014 FIFA World Cup was held in Brazil, where the climatic conditions presented a significant thermoregulatory and perceptual challenge to those unfamiliar with the heat and humidity. CASE PRESENTATION: This case report documents the adaptation induced by a novel mixed methods (isothermic and passive) heat acclimation (HA) regime for a northern European professional soccer match official prior to the tournament. The intervention involved 13 HA sessions over an 18 day period comprising five isothermic HA sessions whereby intermittent running was used to target and maintain tympanic temperature (Tytemp) at 38 °C for 90 min, and seven passive HA sessions of 48 °C water bathing for 30 min. The athlete performed a heat stress test (HST) (35 min running at four incremental intensities in 30 °C) and a repeated high-intensity running test (as many 30 s self-paced efforts as possible, to a maximum of 20, with 30 s passive recovery) before and after the intervention. The mixed methods HA regime increased plasma volume (+7.1 %), and sweat loss (+0.9 L h(-1)), reduced exercising Tytemp (-0.6 °C), and mean body temperature (-0.5 °C). High-intensity running performance improved after HA (+29 %), as did the perception of thermal comfort during exercise (-0.3 units). CONCLUSION: This data evidences the effectiveness of a practical, mixed methods HA strategy, remotely implemented around training and competition, at inducing the heat acclimation phenotype in a high-level soccer match official. SN - 2193-1801 UR - https://www.unboundmedicine.com/medline/citation/27330883/Combined_active_and_passive_heat_exposure_induced_heat_acclimation_in_a_soccer_referee_before_2014_FIFA_World_Cup_ L2 - https://dx.doi.org/10.1186/s40064-016-2298-y DB - PRIME DP - Unbound Medicine ER -