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°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°C [0.24°C], PM -0.27°C [0.23°C]; P = .002), Tre at sweating onset (AM -0.34°C [0.24°C], PM -0.31°C [0.25°C]; P = .001), and end-exercise Tre (AM -0.47°C [0.33°C], PM -0.43°C [0.29°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.
journal_name
Int J Sports Physiol Performauthors
Zurawlew MJ,Mee JA,Walsh NPdoi
10.1123/ijspp.2017-0620subject
Has Abstractpub_date
2018-11-19 00:00:00pages
1-6eissn
1555-0265issn
1555-0273pub_type
杂志文章abstract:PURPOSE:The purpose of this study was to evaluate the effectiveness of repetitions to fatigue (RTF) using absolute and relative muscle-endurance performances to estimate 1-repetition-maximum (1-RM) bench-press performance in high school male athletes. METHODS:Members of high school athletic teams (n = 118, age = 16.5 ...
journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
doi:10.1123/ijspp.2.3.305
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abstract:UNLABELLED:The contractile history of muscle can potentiate electrically evoked force production. A link to voluntary force production, related in part to an increase in reflex excitability, has been suggested. PURPOSE:Our purpose was to quantify the effect of postactivation potentiation on voluntary force production ...
journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
doi:10.1123/ijspp.3.2.219
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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journal_title:International journal of sports physiology and performance
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pub_type: 杂志文章,多中心研究
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journal_title:International journal of sports physiology and performance
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2015-09-01 00:00:00
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journal_title:International journal of sports physiology and performance
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更新日期:2016-10-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
doi:10.1123/ijspp.6.4.559
更新日期:2011-12-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章,随机对照试验
doi:10.1123/ijspp.2016-0262
更新日期:2017-08-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
doi:10.1123/ijspp.7.3.285
更新日期:2012-09-01 00:00:00
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更新日期:2019-10-15 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2010-06-01 00:00:00
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journal_title:International journal of sports physiology and performance
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章,随机对照试验
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journal_title:International journal of sports physiology and performance
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2017-01-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2018-05-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2016-04-01 00:00:00
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2016-10-01 00:00:00
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pub_type: 杂志文章
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更新日期:2021-01-09 00:00:00
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journal_title:International journal of sports physiology and performance
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2018-06-12 00:00:00
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journal_title:International journal of sports physiology and performance
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2019-12-19 00:00:00
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journal_title:International journal of sports physiology and performance
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journal_title:International journal of sports physiology and performance
pub_type: 杂志文章
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更新日期:2018-08-01 00:00:00