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

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

IRCT

Registry ID

IRCT20240513061779N2

Enrollment

Registered

2025-12-20

Start date

2025-12-06

Completion date

Unknown

Last updated

2026-02-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hormonal profile and performance of volleyball players.

Interventions

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

Eligibility

Sex/Gender

Male

Age

25 Years to 30 Years

Inclusion criteria

Inclusion criteria: 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

Exclusion criteria

Exclusion criteria: 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

Design outcomes

Primary

Measure	Time frame
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.	—

Measure

Time frame

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.

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Countries

Iran (Islamic Republic of)

Contacts

Public ContactMohammadreza Esmaelzadeh Toloee

Shomal university

r48.toloee@gmail.com+98 11 4420 3638

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 7, 2026