TY - JOUR ID - 60984 TI - The Effect of Pre-Cooling on Physiological, Functional and Perceptual Variables in Men in an Exhaustive Intense Activity in a Warm Environment JO - Journal of Sport Biosciences JA - JSB LA - en SN - 2008-9325 AU - Shahsavari, Zahra AU - Dehkhoda, Mohammadreza AU - Rajabi, Hamid AU - Seyedi Bidgoli, Seyed Mohammad AD - a AD - Associate Professor, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran AD - PhD Student, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran Y1 - 2017 PY - 2017 VL - 8 IS - 4 SP - 575 EP - 590 KW - exhaustive intense activity KW - functional variables KW - men KW - perceptual variables KW - physiological variables KW - pre-cooling KW - warm environment DO - 10.22059/jsb.2017.60984 N2 -   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 they were divided into two groups. They exercised in a heated chamber at 38˚c and 50% humidity. A group wore an ice-vest before activity for 30 minutes in a warm place. After warm-up (speed: 50% vVO2max), the speed of the treadmill increased to vVO2max and continued until exhaustion. Heart rate, core body temperature, blood lactate, perceptual variables and Tmax were measured. To analyze the data, dependent t test, Bonferroni test and ANOVA with repeated measures were used (P=0.005). The results indicated that ice-vest had a significant effect on Tmax (P=0.005), RPE (P=0.029) and TSS (P=0.001) and improve performance by 27%.    But it had no significant effect on core body temperature (P=0.194), blood lactate (P=0.051) and HR (P=1.00). Overall, the results showed that pre-cooling had an effect on functional and perceptual variables but no significant effects on physiological variables. UR - https://jsb.ut.ac.ir/article_60984.html L1 - https://jsb.ut.ac.ir/article_60984_b8c8881eef31d5eb3e25357ccfdb183a.pdf ER -