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The Journal of sports medicine and physical fitness

The interactive effects of exercise type and environment temperature on HSP72 in active females.


PMID 23470915

Abstract

The purpose of this study was to determine the effects of endurance and/ or weight training in normal and/ or moderate heat environments on heat shock protein (HSP72) response in active young females. Forty-five healthy active female (21±3 year, 61.4±10.2 kg, VO2max 37.2±5.3 mL/kg/min) were randomLy assigned into five groups; endurance training+normal heat (ET+NH), endurance training+moderate heat (ET+MH), weight training+normal heat (WT+NH), weight training+moderate heat (WT+MH) and heat group (HG). The training protocols include treadmill running to exhaustion on a treadmill at %65-75 V02max in the ET+NH and ET+MH groups and 4 sets of eccentric actions of elbow flexors (two sets with %50 and two sets with %60 1RM) in the WT+NH and WT+MH groups. Fasting blood samples were collected from non-dominant arm at three phases; consist of rest (baseline) and mid-test and 30 min after the training protocols. Endurance training and/ or weight training, in particularly, in the moderate heat ambient resulted in an increase in the HSP72, creatin kinase (CK) and cortisol values, as compared to ET+NH and WT+NH groups and the mid-test and baseline phases. However, the HSP72 and CK concentrations significantly increased in WT+ NH group, as compared to ET+NH group. Furthermore, WT+MH group showed significant increase in HSP72 levels, as compared to ET+ NH group. These findings suggest the muscle damage related to factors such as; exercise type, environment temperature and increase in exercise-induced body temperature.