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Abstract

International Journal of Exercise Science 18(6): 1410-1421, 2025. https://doi.org/10.70252/ERZX6867 The study aimed to compare the effect of three precooling techniques (internal, external, and combined) on the time to reach exhaustion in active men. Eight active men (23 ± 2 yrs; 178 ± 6 cm; 73 ± 11 kg) participated] in 4 exhaustive test sessions with a minimum power output of 40Wmax. Sessions included consumption of 7.5 grams of ice water with a temperature of -1 degree per kilogram of body weight, cold towels (4-6°C) used to cool the skin surface], a combination of ice water consumption and a towel cooling, and a control session in which subjects cycled to reach exhaustion without any cooling techniques. Data was analyzed using a mixed-method (treatment time) repeated-measures ANOVA was with significance accepted at p<0.05. The skin surface temperature in the combined session and towel session was significantly lower than the ice session (p<0.001). The central temperature in the combined and ice slurry sessions was significantly lower at the beginning and end of the activity compared to the towel session (p<0.01). Exhaustion time and distance traveled in the combined session were significantly longer compared to the ice slurry and control sessions (p<0.01). In the towel session, exhaustion time was significantly greater] than the control session (p <0.04). The rate of sweating in the ice slurry session was significantly lower than the control session (p <0.01). The perception of pressure in the combined session was significantly lower than the ice slurry and control sessions (p<0.05). The results indicate that a combination of two techniques (internal and external cooling) can have a greater effect on measures of endurance performance.

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