We investigated whether a cooling vest worn during an active warm-up enhances 5-km run time in the heat. Seventeen competitive runners (9 men, maximal oxygen uptake = 66.7 +/- 5.9 ml x kg(-1) x min(-1); 8 women, maximal oxygen uptake = 58.0 +/- 3.2 ml x kg(-1) x min(-1)) completed two simulated 5-km runs on a treadmill after a 38-min active warm-up during which they wore either a T-shirt (C) or...

This study investigated whether torso and thigh precooling during a warm-up effects neuromuscular function and 5 km time-trial performance in hot, humid conditions. Eight male, well-trained runners completed three randomized time-trials in 32.2 ± 0.8°C, 48.6 ± 6.7% relative humidity. A 30-min warm-up was completed with no cooling (Control), precooling via an ice vest (Vest), or ice packs coveri...

We used three techniques of precooling to test the hypothesis that heat strain would be alleviated, muscle temperature (Tmu) would be reduced, and as a result there would be delayed decrements in peak power output (PPO) during exercise in hot, humid conditions. Twelve male team-sport players completed four cycling intermittent sprint protocols (CISP). Each CISP consisted of twenty 2-min periods...

We investigated whether single or combined methods of pre-cooling could affect high-intensity exercise performance in a hot environment. Seven male athletes were subjected to four experimental conditions for 30 min randomised order. The were: 1) wearing vest cooled temperature 4 ? (Vest), 2) consuming beverage (Beverage), 3) simultaneous usage and consumption (Mix), 4) the control trial without...

the aim of this study was to determine the effect of pre-cooling on physiological, functional and perceptual variables in men in an exhaustive intense activity in a warm environment. 10 healthy athlete men (mean age 23.40±1.89 yr, weight 69.80±8.94 kg, height 172±5.98 cm, body fat percentage 10.93±3.39) participated in a separate session in the laboratory; their vvo2max was determined and then ...

Although pre-cooling is known to enhance exercise performance, the optimal cooling intensity is unknown. We hypothesized that mild cooling opposed to strong cooling circumvents skin vasoconstriction and thermogenesis, and thus improves cooling efficiency reflected in improved time to exhaustion. Eight males undertook three randomized trials, consisting of a pre-cooling and an exercise session. ...

Brown adipose tissue (BAT) activity is induced when humans are exposed to cold. Therefore, cold exposure prior to the 18F-FDG-PET/CT scan is used as a tool to quantify BAT. Several cooling protocols, including fixed and personalized ones are currently in use. The aim of the present study was to determine the effect of a new personalized cooling protocol where the shivering threshold was measure...