The effect of short-term HMB supplement on Growth hormone and Testosterone concentration after resistance exercise in the athletes

Document Type : Original Article

Authors

1 Associate‌‌ Professor of Exercise Physiology, Department of Exercise Physiology, Faculty of Humanities and Social Sciences, University of Kurdistan, Sanandaj, Iran.

2 Master of exercise physiology, Department of Exercise Physiology, Faculty of Humanities and Social Sciences, University of Kurdistan, Sanandaj, Iran.

10.34785/J019.2023.006

Abstract

Introduction: The aim of this study was to determine the effect of HMB supplement on the growth hormone and testosterone concentration following resistance exercise. Method: In a double-blind, randomized and placebo-controlled study, 10 college athletes with age (22±1.32), weight (45.76±9.13), BMI (23.7±1.99) and body fat percent (12.50±4.08) were randomly selected and ingested HMB (3 gr per day) and placebo (3 gr per day) for one week. Then, A washout period of one week was set between supplementation periods. After one week of supplementation period, subjects performed resistance exercise included 3 sets of bench press, lat pull down, leg extension, leg curl, biceps curl, triceps curl and shoulder press with 85% of 1RM and 2 min rest intervals between sets and exercises. Before and after resistance exercise blood samples were taken. After a week rest, subjects recalled, then supplement and placebo changed for each subject . They performed the same resistance exercise as previous session. After completion of resistance exercise blood samples were collected for measuring growth and testosterone hormones by ELISA method. Results: The results using ANOVA with repeated measures showed that one week ingestion of HMB significantly increased TS levels, but didn’t affect GH hormone secretion. Conclusion: Based on the results, it seems that short-term ingestion of HMB can induceded increase in secretion of TS anabolic hormones after resistance exercise in athletes.

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References

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Research in Exercise Nutrition
Volume 1, Issue 2
May 2022
Pages 53-62

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History

  • Receive Date: 09 March 2023
  • Revise Date: 16 April 2023
  • Accept Date: 16 April 2023
  • First Publish Date: 16 April 2023

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