Effects of L-arginine and L-citrulline Supplementation on Muscle Respiration

Dietary Supplement: L-arginine and L-citrulline supplement, L-arginine supplement, or placebo supplement (corn-starch) Subjects will complete 3 individual 10 day supplementation periods, separated by washout periods of approximately 2 weeks.

On day 10 of each supplementation period, subjects will complete a performance test on a cycle ergometer to investigate their endurance performance.