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Preliminary evidence suggest that patients with chronic obstructive pulmonary disease (COPD) suffer from lower-limb muscle dysfunction. This may, at least in part, be due to a combination of physical inactivity and muscle oxidative stress. Pilot data (not published) clearly show that patients with COPD have significantly lower carnosine, which is a pH (acidity-basicity level) buffer and antioxidant, levels in the m. vastus lateralis compared to healthy subjects. Beta-alanine supplementation has shown to increase muscle carnosine in trained and untrained healthy subjects. This study will assess if muscle carnosine can be augmented by beta-alanine supplementation in 40 COPD patients (20 patients receive beta-alanine, 20 patients receive placebo). 10 healthy elderly controls will also be assessed to compare baseline muscle carnosine levels.
The aims of this study are to:
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COPD-specific exclusion criteria:
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60 participants in 3 patient groups, including a placebo group
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Data sourced from clinicaltrials.gov
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