The effect of cotton and dry wicking materials on temperature, exertion, and feeling during exercise

Abstract

This study analyzed the thermoregulatory effects of cotton and dry wicking materials during strenuous exercise. The working hypothesis is that dry wicking shirts will keep the participant cooler and possibly allow a better athletic performance. 11 healthy and euhydrated participants (8 females, avg age=20.5 ± 0.7 yr, 3 males, avg age=29 ± 14.1yr) ran on a treadmill for 45 min in a controlled environment (Temp=70 ±1°F, RH=60.5 ±3.5%) at 75% VO2 max. The participants ran 1 trial each in a randomly assigned a long sleeve cotton (COT) or polyester/nylon (PN) shirt. Data was taken every 10 min for 40 min, with a 5 min cool down. No significant difference was observed in hydration level or self‐reported thermal sensation. Core temperature was significantly higher in PN (p≤0.07) except at time=0 and 30 min. Forearm and forehead temperature were significantly higher in PN (p≤0.07) at time ≥ 20 min. Rating of Perceived Exertion was significantly higher with COT (p≤0.07) and Feelings Scale ratings were significantly lower with COT (p≤0.08) at every time point. In conclusion, under identical exertion, participants wearing PN shirts had more positive exercise experience, and dissipated more heat. Our data supports our working hypothesis. Funding provided by Elon University Undergraduate Research Program