Investigation effects of two methods of resistance training on the acute response of cortisol hormone in male athletics.

safarzadeh, Samad and Bolboli, Lotfali and Nagizadeh, Abbass and Valizadeh, Aydin (2010) Investigation effects of two methods of resistance training on the acute response of cortisol hormone in male athletics. Other thesis, University of Mohaghegh Ardabili.

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Abstract

Hormonal concentration is affected by intensity , duration and method of training. The purpose of this study was to determine of serum cortisol concentration response to two method of resistance training. Twenty male athletes( mean age: 20.28±1.6 yr , weight:70.2±6.1 kg , height 175±6.95 cm) volunteered to participate in this investigation . Subjects divided into two groups randomly: The resistance exercise protocol of group1 (combined-Com) consisted of one exercise from upper body then immediately and withuot resting one exercise from the lower body by 60% of one repetition maximal (1RM). subjects after 1 minute rest, performed with same intensity for the other muscle groups that mentioned. After complete of this round and 1.30 minute resting, The second round performed with 70% of 1RM and third round with 80%of 1RM according to the above mentioned. Group 2 ( noncombined - noncom) they were exercise the lower body muscle after the performing upper body muscle. Subjects were began a specific movement with 60% of 1RM and they rested one minute, in the second set, they performed with 70% of 1RM and third with 80% of 1RM for the same muscle group. After the end of this round subjects rested 1.30 minute then performed other exercise according to the above mentioned. Blood samples were obtained 15 minute pre and immediately follower each resistance exercise bout. Serum cortisol Concentration was determined by enzyme immunoassays through the use of kits for cortisol hormone and using by ELISA technique. All data analyzed using independent and dependent t-test at p≤0.05. There was significant increase at the level of serum cortisol immediately after resistance exercise in both groups, but with no significant difference between groups (p≥0.05).The resistance exercise stimulates the cortisol concentration response to combined and noncombined protocols. Furthermore com and noncom protocols cause to slight cortisol hormone responses. Suggested that with modification duration of rest between each set, each period and also intensity of exercise different cortisol concentration responses in both protocols.

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