Tools
Tools
Zurawlew, MJ, Mee, JA and Walsh, NP (2018) Heat Acclimation by Postexercise Hot-Water Immersion: Reduction of Thermal Strain During Morning and Afternoon Exercise-Heat Stress After Morning Hot-Water Immersion. International Journal of Sports Physiology and Performance, 13 (10). pp. 1281-1286. ISSN 1555-0273
|
Text
Heat acclimation by post-exercise hot water immersion in the morning reduces thermal strain during morning and afternoon exercise-heat-stress.pdf - Accepted Version Download (672kB) | Preview |
Abstract
PURPOSE: Recommendations state that to acquire the greatest benefit from heat-acclimation, the clock time of heat-acclimation sessions should match that of expected exercise-heat stress. It remains unknown if adaptations by postexercise hot-water immersion (HWI) demonstrate time-of-day-dependent adaptations. Thus, the authors examined whether adaptations following postexercise HWI completed in the morning were present during morning and afternoon exercise-heat stress. METHODS: Ten males completed an exercise-heat stress test commencing in the morning (9:45 AM) and afternoon (2:45 PM; 40 min; 65% of maximal oxygen uptake treadmill run) before and after heat-acclimation. The 6-d heat-acclimation intervention involved a daily 40-min treadmill run (65% of maximal oxygen uptake) in temperate conditions followed by </=40-min HWI (40 degrees C; 6:30-11:00 AM). RESULTS: Adaptations by 6-d postexercise HWI in the morning were similar in the morning and afternoon. Reductions in resting rectal temperature (Tre) (AM -0.34 degrees C [0.24 degrees C], PM -0.27 degrees C [0.23 degrees C]; P = .002), Tre at sweating onset (AM -0.34 degrees C [0.24 degrees C], PM -0.31 degrees C [0.25 degrees C]; P = .001), and end-exercise Tre (AM -0.47 degrees C [0.33 degrees C], PM -0.43 degrees C [0.29 degrees C]; P = .001), heart rate (AM -14 [7] beats.min(-1), PM -13 [6] beats.min(-1); P < .01), rating of perceived exertion (P = .01), and thermal sensation (P = .005) were not different in the morning compared with the afternoon. CONCLUSION: Morning heat acclimation by postexercise HWI induced adaptations at rest and during exercise-heat stress in the morning and midafternoon.
| Item Type: | Article |
|---|---|
| Additional Information: | Accepted author manuscript version reprinted, by permission, from International Journal of Sports Physiology and Performance, 2018, 13(10): 1281-1286pp-pp, https://doi.org/10.1123/ijspp.2017-0620. © Human Kinetics, Inc. |
| Uncontrolled Keywords: | 1106 Human Movement and Sports Sciences, 1116 Medical Physiology, 1701 Psychology |
| Subjects: | R Medicine > RC Internal medicine > RC1200 Sports Medicine |
| Divisions: | Sport & Exercise Sciences |
| Publisher: | Human Kinetics |
| Related URLs: | |
| Date Deposited: | 16 Feb 2022 09:55 |
| Last Modified: | 16 Feb 2022 10:01 |
| DOI or ID number: | 10.1123/ijspp.2017-0620 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/16303 |
 |
View Item |