Isfahan University of Medical Sciences Journal of Isfahan Medical School 1027-7595 42 791 2024 12 21 The Effect of Eccentric Quasi-Isometric and Traditional Resistance Training on Serum Levels of Steroid Hormones in Inactive Men The Effect of Eccentric Quasi-Isometric and Traditional Resistance Training on Serum Levels of Steroid Hormones in Inactive Men 1009 1019 31345 10.48305/jims.v42.i791.1009 FA Ahmad Dolatyari Faculty of Sports Sciences, Urmia University, Urmia, Iran 0009-0003-2255-6341 Kazem Khodaei Faculty of Sports Sciences, Urmia University, Urmia, Iran 0000-0003-1566-2851 Mohammadreza Zolfaghar Didani Faculty of Sports Sciences, Urmia University, Urmia, Iran 0000-0002-8878-9485 Dustin Oranchuk Muscle Morphology, Mechanics, and Performance Laboratory, Department of Physical Medicine and Rehabilitation, University of Colorado-Anschutz Medical Campus, Aurora, Colorado, USA 0000-0003-4489-9022 Journal Article 2024 08 04 Background: Eccentric quasi-isometric training (EQI) is a new method of resistance training. This study is the first to analyze the long-term impact of EQI training on steroid hormones in inactive men compared to traditional resistance training. Methods: 36 young inactive men were selected voluntarily and randomly divided into three groups: EQI training, traditional resistance training, and control. The conventional and EQI resistance training groups performed the exercise program with an intensity of 60-85% of one repetition maximum for six weeks and three sessions per week. Blood sampling was done in a fasting state 48 hours before the first session and 48 hours after the last session. Steroid hormones were measured using the ELISA method. Two-way mixed ANOVA and LSD post hoc tests were used for data analysis. Findings: The time x group interaction results indicated that the sex hormone-binding globulin (P = 0.002), dehydroepiandrosterone (P = 0.003), and dehydroepiandrosterone sulfate (P = 0.002) levels had a significant difference. Between-group results showed that EQI and traditional resistance training groups increased steroid hormones compared to the control group (P ≤ 0.05). However, there was no significant difference between the two groups (P > 0.05). Both training groups had a significant increase in steroid hormones compared to the pre-test (P ≤ 0.05). Conclusion: The present study findings demonstrated that both EQI and traditional resistance training can improve steroid hormones, but there was no difference between the two types of resistance training. Therefore, according to the principle of training diversity, EQI training can be a suitable alternative to traditional resistance training. Background: Eccentric quasi-isometric training (EQI) is a new method of resistance training. This study is the first to analyze the long-term impact of EQI training on steroid hormones in inactive men compared to traditional resistance training. Methods: 36 young inactive men were selected voluntarily and randomly divided into three groups: EQI training, traditional resistance training, and control. The conventional and EQI resistance training groups performed the exercise program with an intensity of 60-85% of one repetition maximum for six weeks and three sessions per week. Blood sampling was done in a fasting state 48 hours before the first session and 48 hours after the last session. Steroid hormones were measured using the ELISA method. Two-way mixed ANOVA and LSD post hoc tests were used for data analysis. Findings: The time x group interaction results indicated that the sex hormone-binding globulin (P = 0.002), dehydroepiandrosterone (P = 0.003), and dehydroepiandrosterone sulfate (P = 0.002) levels had a significant difference. Between-group results showed that EQI and traditional resistance training groups increased steroid hormones compared to the control group (P ≤ 0.05). However, there was no significant difference between the two groups (P > 0.05). Both training groups had a significant increase in steroid hormones compared to the pre-test (P ≤ 0.05). Conclusion: The present study findings demonstrated that both EQI and traditional resistance training can improve steroid hormones, but there was no difference between the two types of resistance training. Therefore, according to the principle of training diversity, EQI training can be a suitable alternative to traditional resistance training.

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