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The effect of four weeks of resistance training with and without blood flow restriction on serum cortisol levels in young male professional volleyball players
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Shamsuddin Matloob Brahoui   , Abas Salehkia , Omid Mohamaddoost *  , Maryam Banparvar |
| Department of Sport Sciences, Faculty of Education and Psychology, University of Sistan and Baluchestan, Zahedan, Iran |
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Abstract: (12 Views) |
Background and Aim: Resistance training with blood flow restriction is a type of exercise that uses controlled pressure on the limbs to achieve similar or even superior results without the need for high training intensity. The present study aimed to investigate the effect of four weeks of resistance training with and without blood flow restriction on serum cortisol levels in young male elite volleyball players.
Methods: The present study was a quasi-experimental study with a pre-test and post-test design with two control groups, in which 20 volleyball players in Zahedan were selected as samples and were divided into two BFR and NBFR groups. The BFR group underwent a blood flow restriction program, while the NBFR group did not have blood flow restriction in the training program. The training program of the NBFR group was performed at an intensity of 70%, and the BFR group at an intensity of 30% of one repetition maximum. Blood sampling was performed twice, pre- and post-test, under similar conditions. Cortisol was measured using a Canadian-made ELISA kit. Independent t-test and paired t-test were used to test the research hypotheses at a significance level of p < 0.05 in SPSS-25 software.
Results: The results showed that cortisol levels increased significantly in both groups (p ≥ 0.005). The results also showed that there was a significant difference between the two groups in cortisol levels (p = 0.00). So, the average was higher in the BFR group.
Conclusion: The use of acute resistance training as well as lower-intensity resistance training in conjunction with BFR protocols resulted in similar hormonal responses. Therefore, the use of resistance training in conjunction with BFR could be an alternative for athletes who cannot lift heavy loads but need to increase their catabolic hormones.
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| Keywords: Blood flow restriction resistance training, cortisol, volleyball |
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Full-Text [PDF 878 kb]
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Type of Study: Original Research |
Subject:
Exercise physiology
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