The acute and chronic effects of continuous and alternative resistance trainings on T3, T4 and TSH serum concentration of active young women

Abstract

Due to researches shortages about effects of various kinds of resistance trainings on acute and chronic responses of thyroid hormones, the purpose of the present study was comparison of acute and chronic influences of continuous and intermittent resistance trainings on T3, T4 and TSH serums levels of active young women. So, 21 subjects were randomly divided to three continuous resistance training, intermittent resistance training and control groups, and investigated. Two experimental groups participated in 8 weeks progressive continuous and intermittent resistance trainings. Before, immediately then and 2 hrs after first test (48 hr before trainings beginning) blood samples were taken from the subjects. The control group gave blood samples, only at the beginning and ending of the 8 weeks period. In order to investigate variations of under study variant in both continuous and intermittent groups, variance analysis test with repeated measurements was implemented. Considering to the presence of the control group, and in order to compare between the continuous and intermittent training groups, one-way analysis f variance test (ANOVA) was used, at the stage of before activity, and to investigate data at the stages of immediately then and 2 hrs after activity, T-test was utilized. There wasn’t observed any significant difference between the continuous and intermittent resistance training groups, among the levels of T3, T4 and TSH serums, in response to one turn resistance exercise, before and after 8 weeks trainings (P>0.05). Also, levels of T3, T4 and TSH serums hadn’t any significant change neither in continuous nor in intermittent resistance training group, during the research period (P>0.05). These results indicate a progressive resistance trainings period, similar to the training protocol of the present study, wouldn’t cause any significant metabolic variation in active young women. Also, these results show that this nonbeing significant variation hasn’t any relation to whether the resistance exercise is continuous or intermittent.