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IRCT20240513061779N2 IRCT 2025-12-20 Shomal university Comparison the effects of combined training with different rest intervals on anabolic and catabolic status, strength, and aerobic and anaerobic performance of volleyball players Comparison the effect of 6 weeks of combined training with different rest intervals on serum levels of some anabolic and catabolic markers, aerobic and anaerobic performance, and strength in volleyball players 2025-12-06 anticipated 48 Complete https://irct.ir/trial/87009 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Randomization description: Block randomization with block size = 4 will be divided between the groups; the randomization list will be generated using the "Random allocation" software. So that first, the subjects will be grouped in consecutive blocks of fixed size of 4 in the order of their entry into the study. For each block, a random sequence of group assignments will be generated by specialized "Random allocation" software. This software ensures that the order of the groups within each block is completely random. Then, each new volunteer is assigned to one of the study groups based on their, Blinding description: In order to prevent the Hawthorne and Avis effect, in the present study, the examiner (clinical caregiver) and the laboratory expert (responsible for evaluating blood samples) will not be aware of the content and titles of the groups. N/A Hormonal profile and performance of volleyball players. Intervention 1: Intervention group: Implementation of 6 weeks of simultaneous concurrent (resistance training with 75% to 95% of 1 repetition maximum + Aerobic training with 60% to 80% maximum oxygen uptake) training + Volleyball training. Intervention 2: Intervention group: Implementation of 6 weeks of concurrent (resistance training with 75% to 95% of 1 repetition maximum + Aerobic training with 60% to 80% maximum oxygen uptake) training with a 3-hour interval ratio + Volleyball training. Intervention 3: Intervention group: Implementation of 6 weeks of concurrent (resistance training with 75% to 95% of 1 repetition maximum + Aerobic training with 60% to 80% maximum oxygen uptake) training with a 24-hour interval ratio + Volleyball training. Intervention 4: Control group: Implementation of 6 weeks of volleyball training. No - There is not a plan to make this available Justification or reason for not sharing IPD is No more information available.
public Mohammadreza Esmaelzadeh Toloee
Haraz street
Amol Iran (Islamic Republic of) ۴۶۱۶۱۸۴۵۹۶ +98 11 4420 3638 r48.toloee@gmail.com Shomal university scientific Nader Hamedchaman
Haraz street
Amol Iran (Islamic Republic of) ۴۶۱۶۱۸۴۵۹۶ +98 11 4420 3638 nader.hamedchaman@gmail.com Shomal university Iran (Islamic Republic of) A documented history of 5 years of participation in the Premier League No records of smoking Absence of previous cardiovascular disease, and no history of blood, liver, kidney, or respiratory diseases. Eligibility age at least 18 years old No use of androgenic and ergogenic supplements for at least 3 months prior to the experiment 25 years 30 years Male Outfit the prerequisitive age range of 18 to 30 years old Athletes with new functional injuries Adding drug treatments that interfere with the hormonal profile or performance of athletes Treatment - Other Treatment - Other Treatment - Other Treatment - Other Intervention group: Implementation of 6 weeks of simultaneous concurrent (resistance training with 75% to 95% of 1 repetition maximum + Aerobic training with 60% to 80% maximum oxygen uptake) training + Volleyball training Intervention group: Implementation of 6 weeks of concurrent (resistance training with 75% to 95% of 1 repetition maximum + Aerobic training with 60% to 80% maximum oxygen uptake) training with a 3-hour interval ratio + Volleyball training Intervention group: Implementation of 6 weeks of concurrent (resistance training with 75% to 95% of 1 repetition maximum + Aerobic training with 60% to 80% maximum oxygen uptake) training with a 24-hour interval ratio + Volleyball training Control group: Implementation of 6 weeks of volleyball training Serum testosterone levels. Timepoint: Before and 48 hours subsequent to the 8 weeks of complex training. Method of measurement: ELISA technique. Serum cortisol levels. Timepoint: Before and 48 hours subsequent to the 8 weeks of complex training. Method of measurement: ELISA technique. Serum growth hormone levels. Timepoint: Before and 48 hours subsequent to the 8 weeks of complex training. Method of measurement: ELISA technique. Serum insulin-like growth factor levels. Timepoint: Before and 48 hours subsequent to the 8 weeks of complex training. Method of measurement: ELISA technique. Anaerobic power. Timepoint: Before and 48 hours subsequent to the 8 weeks of complex training. Method of measurement: Sargent jump test. Aerobic training. Timepoint: Before and 48 hours subsequent to the 8 weeks of complex training. Method of measurement: 1600 meter running test. Definite strength. Timepoint: Before and 48 hours subsequent to the 8 weeks of complex training. Method of measurement: Dynamometer. Shomal university Approved 2025-07-15 Ethics Committee of Sport Sciences Research Institute No. 3, 5th Alley, Miremad Street, Motahhari Street Tehran Tehran Iran (Islamic Republic of)