التفاصيل البيبلوغرافية
| العنوان: |
Mixed-Method Precooling Enhances Self-Paced 20-km Cycling Time-Trial Performance When Apparent Temperature Is >46 °C but May Not Be a Priority in <46 °C. |
| المؤلفون: |
Ramos, Julian Andro P., Ducker, Kagan J., Riddell, Hugh, Girard, Olivier, Landers, Grant J., Brade, Carly J. |
| المصدر: |
International Journal of Sports Physiology & Performance; May2024, Vol. 19 Issue 5, p435-442, 8p |
| مصطلحات موضوعية: |
SKIN temperature, STATISTICAL models, BODY temperature regulation, DATA analysis, ENVIRONMENTAL monitoring, RESEARCH funding, ENDURANCE sports, PERSPIRATION, DESCRIPTIVE statistics, EXERCISE intensity, CYCLING, ATHLETES, HUMIDITY, BODY temperature, HYDRATION, PHYSICAL fitness, RESEARCH methodology, INTRACLASS correlation, STATISTICS, ATHLETIC ability, TEMPERATURE, ANTHROPOMETRY, HUMAN comfort, CONFIDENCE intervals, WARMUP, REGRESSION analysis, TIME |
| مستخلص: |
Purpose: Precooling (PreC) may only benefit performance when thermal strain experienced by an individual is sufficiently high. We explored the effect of mixed-method PreC on 20-km cycling time-trial (CTT) performance under 3 different apparent temperatures (AT). Methods: On separate days, 12 trained or highly trained male cyclists/triathletes completed six 20-km CTTs in 3 different ATs: hot-dry (35 °C AT), moderately hot-humid (40 °C AT), and hot-humid (46 °C AT). All trials were preceded by 30 minutes of mixed-method PreC or no PreC (control [CON]). Results: Faster 2.5-km-split completion times occurred in PreC compared with CON in 46 °C AT (P =.02), but not in 40 °C AT (P =.62) or 35 °C AT (P =.57). PreC did not affect rectal and body temperature during the 20-km CTT. Skin temperature was lower throughout the CTT in PreC compared with CON in 46 °C AT (P =.01), but not in 40 °C AT (P = 1.00) and 35 °C AT (P = 1.00). Heart rate had a greater rate of increase during the CTT for PreC compared with CON in 46 °C AT (P =.01), but not in 40 °C AT (P =.57) and 35 °C AT (P = 1.00). Ratings of perceived exertion (P <.001) and thermal comfort (P =.04) were lower for PreC compared with CON in 46 °C AT only, while thermal sensation was not different between PreC and CON. Conclusion: Mixed-method PreC should be applied prior to 20-km CTTs conducted in hot-humid conditions (≥46 °C AT). Alternatively, mixed-method PreC may be a priority in moderately hot-humid (∼40 °C AT) conditions but should not be in hot-dry (∼35 °C AT) conditions for 20-km CTT. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
