The Effect of Pre-Cooling on Physiological, Functional and Perceptual Variables in Men in an Exhaustive Intense Activity in a Warm Environment

Shahsavari, Zahra; Dehkhoda, Mohammadreza; Rajabi, Hamid; Seyedi Bidgoli, Seyed Mohammad

doi:10.22059/jsb.2017.60984

Document Type : Research Paper I Open Access I Released under CC BY-NC 4.0 license

Authors

¹ a

² Associate Professor, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran

³ PhD Student, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran

https://doi.org/10.22059/jsb.2017.60984

Abstract

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 vVO_2max 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% vVO_2max), the speed of the treadmill increased to vVO_2max 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.

Keywords

References

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Journal of Sport Biosciences

The Effect of Pre-Cooling on Physiological, Functional and Perceptual Variables in Men in an Exhaustive Intense Activity in a Warm Environment

References

References

Volume 8, Issue 4 - Serial Number 4
March 2017
Pages 575-590

The Effect of Pre-Cooling on Physiological, Functional and Perceptual Variables in Men in an Exhaustive Intense Activity in a Warm Environment

References

References

Volume 8, Issue 4 - Serial Number 4March 2017Pages 575-590

Volume 8, Issue 4 - Serial Number 4
March 2017
Pages 575-590