Beta-Alanine Supplementation and Muscle Fatigue in the Elderly
Author Information
Author(s): Jeffrey R. Stout, Sue B. Graves, Abbie E. Smith, Michael J. Hartman, Joel T. Cramer, Travis W. Beck, Roger C. Harris
Primary Institution: University of Oklahoma
Hypothesis
Does beta-alanine supplementation improve physical working capacity at the fatigue threshold in elderly individuals?
Conclusion
Ninety days of beta-alanine supplementation may increase physical working capacity by delaying the onset of neuromuscular fatigue in elderly men and women.
Supporting Evidence
- Beta-alanine supplementation significantly increased skeletal muscle carnosine levels.
- Participants in the beta-alanine group showed a 28.6% increase in physical working capacity.
- 67% of the beta-alanine group improved their physical working capacity compared to 21.5% in the placebo group.
Takeaway
Taking beta-alanine for three months can help older people exercise longer without getting tired.
Methodology
A double-blind placebo-controlled study with 26 elderly participants assigned to either beta-alanine or placebo for 90 days, measuring physical working capacity at the fatigue threshold.
Potential Biases
Potential bias due to self-reported compliance with dietary and activity patterns.
Limitations
The study was limited to a small sample size and specific age range, which may not be generalizable to all elderly populations.
Participant Demographics
26 elderly participants (9 men and 17 women) aged 55 to 92 years.
Statistical Information
P-Value
p = 0.007
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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