Exercise Alters Your Amino Acids

Exercise Alters Your Amino Acids You've seen how your muscles react to intense exercise. Can you image what's taking place with competitors engaged in an ultra-endurance contest? A study published in the European Journal of Applied Physiology gives us some idea of what's going on with the body's supply of amino acids when athletes compete in grueling 24-hour events.

Nine male ultra-endurance athletes performed 12 sessions of running, kayaking and cycling. Researchers took blood samples before, during and after exercise, then made a final test 28 hours into the recovery phase. Blood levels of essential amino acids fell 14% during exercise, and glutamine dropped off 19%. All amino acid levels returned to normal after 28 hours.

True Strength Moment: Although there were no changes to amino acid concentrations in muscle tissue, treating yourself to a whey protein shake before prolonged exercise could provide some anti-catabolic support. Whey protein is a rich source of both essential amino acids, including the BCAAs, along with the conditionally essential amino acid glutamine, which is one of the most abundant amino acids in your body.
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