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Acute creatine supplementation in older men.

E S Rawson1, P M Clarkson

  • 1Department of Exercise Science, University of Massachusetts, Amherst 01003, USA. erawson@excsci.umass.edu

International Journal of Sports Medicine
|February 22, 2000
PubMed
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Short-term creatine (Cr) supplementation in older men did not significantly improve isometric strength. While body mass slightly increased, isokinetic performance showed only minor, non-significant gains in the creatine group.

Area of Science:

  • Gerontology
  • Sports Science
  • Nutritional Biochemistry

Background:

  • Creatine supplementation is known to enhance exercise performance and body composition in younger individuals.
  • Limited research exists on the effects of acute creatine supplementation in older adult populations.

Purpose of the Study:

  • To investigate the impact of short-term creatine supplementation on body mass, isometric strength, and isokinetic exercise performance in older males.
  • To determine if creatine's benefits observed in younger populations translate to elderly individuals.

Main Methods:

  • A double-blind, placebo-controlled study involving 17 males aged 60-78 years.
  • Supplementation involved either creatine (20g/day) or placebo for 5 days.
  • Assessed isometric elbow flexor strength and isokinetic knee extensor performance during a fatigue test.

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Main Results:

  • A statistically significant, albeit small (0.5 kg), increase in body mass was observed in the creatine group.
  • No significant differences in isometric strength were found between the creatine and placebo groups.
  • A significant overall interaction for isokinetic performance was noted, but individual group analysis showed only small, non-significant improvements in the creatine group and a slight decrement in the placebo group.

Conclusions:

  • Acute oral creatine supplementation does not appear to enhance isometric strength in men over 60.
  • Short-term creatine intake may lead to minor increases in body mass and isokinetic performance in older men, but these effects are not statistically significant.
  • Further research is needed to explore the long-term effects and optimal dosing of creatine in geriatric populations.