Fatigue in Elite Athletes

Contrasting plasma free amino acid patterns in elite athletes: association with fatigue and infection.

CONCLUSION: Analysis of these results provided contrasting plasma amino acid patterns: (a) a normal pattern in those without lasting fatigue; (b) marked but temporary changes in those with acute fatigue; (c) a persistent decrease in plasma amino acids, mainly glutamine, in those with chronic fatigue and infection, for which an inadequate protein intake appeared to be a factor.

Basically, those elite (Olympic-level) athletes suffering from chronic fatigue had abnormal plasma amino acid patterns as a result of eating a high-carb diet with not enough protein. When they added 20 to 30 grams protein daily to their diets, the fatigue disappeared.


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