Effect of thermal state and thermal comfort on cycling performance in the heat.

摘要: Purpose: To determine the effect of thermal state and comfort on cycling performance in heat. Methods: Seven well-trained male triathletes completed 3 trials consisting 60 min at a fixed rating perceived exertion (14) followed immediately by 20-km time trial hot (30°C) humid (80% relative humidity) conditions. In randomized order, cyclists either drank ambient-temperature fluid ad libitum during exercise (CON), ice slurry (−1°C) (ICE), or precooled with iced towels ingestion (15g/kg) before drinking (PC+ICE). Power output, rectal temperature, ratings were measured. Results: Overall mean power output was possibly higher ICE (+1.4% ± 1.8% [90% confidence limit]; 0.4 > smallest worthwhile change [SWC]) likely PC+ICE (+2.5% 1.9%; 1.5 SWC) than CON; however, no substantial differences shown between (unclear)...