Core temperature responses to cold-water immersion recovery: A pooled-data analysis
Autor: | Jessica M. Stephens, Jeremiah J. Peiffer, Shona L. Halson, Geoffrey M. Minett, Alan Dunne, D. Crampton, Gary J. Slater, Rob Duffield, Nathan G. Versey, Ken Sharpe, Joanna Miller, Christopher D. Askew, Christopher J. Gore |
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Rok vydání: | 2018 |
Předmět: |
Adult
Male protocol variance Time Factors Ice bath Physical Therapy Sports Therapy and Rehabilitation 030204 cardiovascular system & hematology Core temperature 03 medical and health sciences Young Adult 0302 clinical medicine Animal science Double difference Immersion Immersion (virtual reality) Humans Orthopedics and Sports Medicine Pooled data Exercise Core cooling exercise Chemistry Water 030229 sport sciences Myalgia ice bath Cold Temperature hydrotherapy Water temperature Water immersion Muscle Fatigue performance Sport Sciences Body Temperature Regulation |
Popis: | Purpose:To examine the effect of postexercise cold-water immersion (CWI) protocols, compared with control (CON), on the magnitude and time course of core temperature (Tc) responses.Methods:Pooled-data analyses were used to examine theTcresponses of 157 subjects from previous postexercise CWI trials in the authors’ laboratories. CWI protocols varied with different combinations of temperature, duration, immersion depth, and mode (continuous vs intermittent).Tcwas examined as a double difference (ΔΔTc), calculated as the change inTcin CWI condition minus the corresponding change in CON. The effect of CWI on ΔΔTcwas assessed using separate linear mixed models across 2 time components (component 1, immersion; component 2, postintervention).Results:Intermittent CWI resulted in a mean decrease in ΔΔTcthat was 0.25°C (0.10°C) (estimate [SE]) greater than continuous CWI during the immersion component (P = .02). There was a significant effect of CWI temperature during the immersion component (P = .05), where reductions in water temperature of 1°C resulted in decreases in ΔΔTcof 0.03°C (0.01°C). Similarly, the effect of CWI duration was significant during the immersion component (P = .01), where every 1 min of immersion resulted in a decrease in ΔΔTcof 0.02°C (0.01°C). The peak difference inTcbetween the CWI and CON interventions during the postimmersion component occurred at 60 min postintervention.Conclusions:Variations in CWI mode, duration, and temperature may have a significant effect on the extent of change inTc. Careful consideration should be given to determine the optimal amount of core cooling before deciding which combination of protocol factors to prescribe. |
Databáze: | OpenAIRE |
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