Cited by 274Muscle metabolism and nutritionNutrition and Health in AgingSports Performance and Training

Creatine Supplementation Enhances Isometric Strength and Body Composition Improvements Following Strength Exercise Training in Older Adults

Brose, A., Parise, G., Tarnopolsky, M. A.·2003·The Journals of Gerontology Series A: Biological Sciences and Medical Sciences

Abstract

We sought to determine whether creatine monohydrate (CrM) supplementation would enhance the increases in strength and fat-free mass that develop during resistance exercise training in older adults. Twenty-eight healthy men and women over the age of 65 years participated in a whole-body resistance exercise program 3 days per week for 14 weeks. The study participants were randomly allocated, in a double-blind fashion, to receive either CrM (5 g/d + 2 g of dextrose; n = 14) or placebo (7 g of dextrose; n = 14). The primary outcome measurements included the following: total body mass, fat-free mass, one-repetition maximum strength for each body part, isometric knee extension, handgrip, and dorsiflexion strength, chair stand performance, 30-m walk test, 14-stair climb performance, muscle fiber type and area, and intramuscular total creatine. Fourteen weeks of resistance exercise training resulted in significant increases in all measurements of strength and functional tasks and muscle fiber area for both groups (p <.05). CrM supplementation resulted in significantly greater increases in fat-free mass and total body mass, as compared with placebo (p <.05). The CrM group also showed a greater increase in isometric knee extension strength in men and women, as compared with placebo (p <.05), and also greater gains in isometric dorsiflexion strength (p <.05), but in men only. There was a significant increase in intramuscular total creatine in the CrM group (p <.05). Finally, there were no significant side effects of treatment or exercise training. This study confirms that supervised heavy resistance exercise training can safely increase muscle strength and functional capacity in older adults. The addition of CrM supplementation to the exercise stimulus enhanced the increase in total and fat-free mass, and gains in several indices of isometric muscle strength.

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Crossref · 10.1093/gerona/58.1.b11

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Authors
Brose, A., Parise, G., & Tarnopolsky, M. A.
Affiliations
McMaster University (CA)
Venue
The Journals of Gerontology Series A: Biological Sciences and Medical Sciences
Published
2003-01-01
Volume
58
Issue
1
Pages
B11-B19
ISSN
  • 1079-5006 (ISSN-L)
  • 1758-535X
OpenAlex
W2168090573
Cited by
274
References
65
Citations by year
2026: 9 · 2025: 13 · 2024: 9 · 2023: 5 · 2022: 9 · 2021: 12 · 2020: 7 · 2019: 11 · 2018: 8 · 2017: 8 · 2016: 10 · 2015: 12 · 2014: 12 · 2013: 10 · 2012: 14
FWCI
4.38
Type
journal article
Language
en
Open access
closed
Locations
  • The Journals of Gerontology Series A (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Hamilton Health Sciences
  • McMaster University
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Physiology › Nutrition and Health in Aging
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
Keywords
creatine monohydrate supplementation, resistance training, older adults, isometric strength, fat-free mass, body composition, functional capacity, muscle fiber area, grip strength, quadriceps strength, dextrose placebo
MeSH terms
Age Factors, Aged, Analysis of Variance, Body Composition, Creatine, Double-Blind Method, Female, Humans, Isometric Contraction, Male, Middle Aged, Physical Education and Training, Physical Endurance, Probability, Reference Values, Sensitivity and Specificity, Sex Factors, Exercise, Body Mass Index, Muscle, Skeletal, Muscle Fatigue, Dietary Supplements

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