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Effects of heat acclimation on hand cooling efficacy following exercise in the heat.
J Sports Sci. 2017 May; 35(9):828-834.JS

Abstract

This study examined the separate and combined effects of heat acclimation and hand cooling on post-exercise cooling rates following bouts of exercise in the heat. Seventeen non-heat acclimated (NHA) males (mean ± SE; age, 23 ± 1 y; mass, 75.30 ± 2.27 kg; maximal oxygen consumption [VO2 max], 54.1 ± 1.3 ml·kg-1·min-1) completed 2 heat stress tests (HST) when NHA, then 10 days of heat acclimation, then 2 HST once heat acclimated (HA) in an environmental chamber (40°C; 40%RH). HSTs were 2 60-min bouts of treadmill exercise (45% VO2 max; 2% grade) each followed by 10 min of hand cooling (C) or no cooling (NC). Heat acclimation sessions were 90-240 min of treadmill or stationary bike exercise (60-80% VO2 max). Repeated measures ANOVA with Fishers LSD post hoc (α < 0.05) identified differences. When NHA, C (0.020 ± 0.003°C·min-1) had a greater cooling rate than NC (0.013 ± 0.003°C·min-1) (mean difference [95%CI]; 0.007°C [0.001,0.013], P = 0.035). Once HA, C (0.021 ± 0.002°C·min-1) was similar to NC (0.025 ± 0.002°C·min-1) (0.004°C [-0.003,0.011], P = 0.216). Hand cooling when HA (0.021 ± 0.002°C·min-1) was similar to when NHA (0.020 ± 0.003°C·min-1) (P = 0.77). In conclusion, when NHA, C provided greater cooling rates than NC. Once HA, C and NC provided similar cooling rates.

Authors+Show Affiliations

a Korey Stringer Institute, Human Performance Laboratory, Department of Kinesiology , University of Connecticut , Storrs , CT , USA. b Department of Nutritional Sciences , The Pennsylvania State University , University Park , PA , USA.a Korey Stringer Institute, Human Performance Laboratory, Department of Kinesiology , University of Connecticut , Storrs , CT , USA.a Korey Stringer Institute, Human Performance Laboratory, Department of Kinesiology , University of Connecticut , Storrs , CT , USA. c Department of Kinesiology , California State University , Fresno , CA , USA.a Korey Stringer Institute, Human Performance Laboratory, Department of Kinesiology , University of Connecticut , Storrs , CT , USA. c Department of Kinesiology , California State University , Fresno , CA , USA.a Korey Stringer Institute, Human Performance Laboratory, Department of Kinesiology , University of Connecticut , Storrs , CT , USA.a Korey Stringer Institute, Human Performance Laboratory, Department of Kinesiology , University of Connecticut , Storrs , CT , USA.a Korey Stringer Institute, Human Performance Laboratory, Department of Kinesiology , University of Connecticut , Storrs , CT , USA.a Korey Stringer Institute, Human Performance Laboratory, Department of Kinesiology , University of Connecticut , Storrs , CT , USA.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

27268072

Citation

Adams, Elizabeth L., et al. "Effects of Heat Acclimation On Hand Cooling Efficacy Following Exercise in the Heat." Journal of Sports Sciences, vol. 35, no. 9, 2017, pp. 828-834.
Adams EL, Vandermark LW, Pryor JL, et al. Effects of heat acclimation on hand cooling efficacy following exercise in the heat. J Sports Sci. 2017;35(9):828-834.
Adams, E. L., Vandermark, L. W., Pryor, J. L., Pryor, R. R., VanScoy, R. M., Denegar, C. R., Huggins, R. A., & Casa, D. J. (2017). Effects of heat acclimation on hand cooling efficacy following exercise in the heat. Journal of Sports Sciences, 35(9), 828-834. https://doi.org/10.1080/02640414.2016.1192671
Adams EL, et al. Effects of Heat Acclimation On Hand Cooling Efficacy Following Exercise in the Heat. J Sports Sci. 2017;35(9):828-834. PubMed PMID: 27268072.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of heat acclimation on hand cooling efficacy following exercise in the heat. AU - Adams,Elizabeth L, AU - Vandermark,Lesley W, AU - Pryor,J Luke, AU - Pryor,Riana R, AU - VanScoy,Rachel M, AU - Denegar,Craig R, AU - Huggins,Robert A, AU - Casa,Douglas J, Y1 - 2016/06/08/ PY - 2016/6/9/pubmed PY - 2017/6/21/medline PY - 2016/6/9/entrez KW - Rectal temperature KW - cooling rate KW - exertional heat illness KW - grip strength KW - hyperthermia SP - 828 EP - 834 JF - Journal of sports sciences JO - J Sports Sci VL - 35 IS - 9 N2 - This study examined the separate and combined effects of heat acclimation and hand cooling on post-exercise cooling rates following bouts of exercise in the heat. Seventeen non-heat acclimated (NHA) males (mean ± SE; age, 23 ± 1 y; mass, 75.30 ± 2.27 kg; maximal oxygen consumption [VO2 max], 54.1 ± 1.3 ml·kg-1·min-1) completed 2 heat stress tests (HST) when NHA, then 10 days of heat acclimation, then 2 HST once heat acclimated (HA) in an environmental chamber (40°C; 40%RH). HSTs were 2 60-min bouts of treadmill exercise (45% VO2 max; 2% grade) each followed by 10 min of hand cooling (C) or no cooling (NC). Heat acclimation sessions were 90-240 min of treadmill or stationary bike exercise (60-80% VO2 max). Repeated measures ANOVA with Fishers LSD post hoc (α < 0.05) identified differences. When NHA, C (0.020 ± 0.003°C·min-1) had a greater cooling rate than NC (0.013 ± 0.003°C·min-1) (mean difference [95%CI]; 0.007°C [0.001,0.013], P = 0.035). Once HA, C (0.021 ± 0.002°C·min-1) was similar to NC (0.025 ± 0.002°C·min-1) (0.004°C [-0.003,0.011], P = 0.216). Hand cooling when HA (0.021 ± 0.002°C·min-1) was similar to when NHA (0.020 ± 0.003°C·min-1) (P = 0.77). In conclusion, when NHA, C provided greater cooling rates than NC. Once HA, C and NC provided similar cooling rates. SN - 1466-447X UR - https://www.unboundmedicine.com/medline/citation/27268072/Effects_of_heat_acclimation_on_hand_cooling_efficacy_following_exercise_in_the_heat_ L2 - http://www.tandfonline.com/doi/full/10.1080/02640414.2016.1192671 DB - PRIME DP - Unbound Medicine ER -