Volume 12, Issue 2 (winter 2026)
IJRN 2026, 12(2): 77-87 |
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dehdari I, madani M M, malekipouya M, karimi K. The effect of eight weeks of resistance training combined with creatine monohydrate supplementation on body composition and muscle strength in older men. IJRN 2026; 12 (2) :77-87
URL: http://ijrn.ir/article-1-918-en.html
URL: http://ijrn.ir/article-1-918-en.html
Ph. D in Sports Physiology, Specialized Department of Physical Education and Sports Sciences, Science and Research Unit, Islamic Azad University, Tehran, Iran m.madani@srbiau.ac.ir
Abstract: (80 Views)
Introduction: Ageing is associated with changes in body composition, including a decrease in muscle and skeletal mass. Keratin monohydrate is the most popular dietary supplement used by athletes. It is increasingly used in combination with resistance training to maintain lean tissue mass and muscle strength, especially in older adults. This study aimed to investigate the effects of 8 weeks of resistance training with keratin monohydrate supplementation on body composition and musculoskeletal strength in older men.
Methods: The present study is a single-anonymised study in which 68 healthy older men voluntarily participated. The subjects were randomly assigned to 3 experimental groups and a control group, and resistance training and keratin supplementation were performed for 8 weeks. A dependent t-test was used to examine intra-group changes, and a two-way analysis of variance (group × time) was used to examine inter-group changes.
Results: The findings did not show a significant difference in fat percentage or hand muscle strength between the groups (P>0.05). Also, a significant relationship was observed between body composition and muscle strength of older men after 8 weeks of resistance training with keratin monohydrate supplementation (P<0.05).
Conclusion: Therefore, 8 weeks of resistance training with creatine monohydrate supplement is recommended to maintain muscle strength in older men. The use of this supplement and exercise can be a form of treatment to improve performance in old age.
Methods: The present study is a single-anonymised study in which 68 healthy older men voluntarily participated. The subjects were randomly assigned to 3 experimental groups and a control group, and resistance training and keratin supplementation were performed for 8 weeks. A dependent t-test was used to examine intra-group changes, and a two-way analysis of variance (group × time) was used to examine inter-group changes.
Results: The findings did not show a significant difference in fat percentage or hand muscle strength between the groups (P>0.05). Also, a significant relationship was observed between body composition and muscle strength of older men after 8 weeks of resistance training with keratin monohydrate supplementation (P<0.05).
Conclusion: Therefore, 8 weeks of resistance training with creatine monohydrate supplement is recommended to maintain muscle strength in older men. The use of this supplement and exercise can be a form of treatment to improve performance in old age.
Type of Study: Research |
Subject:
Sport Science
Received: 2024/11/14 | Accepted: 2025/08/17 | Published: 2026/03/3
Received: 2024/11/14 | Accepted: 2025/08/17 | Published: 2026/03/3
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