Gaine, P. C., Martin, W. F., Pikosky, M. A., Bolster, D. R., Maresh, C. M., Tipton, K. D., Wolfe, R. R., & Rodriguez, N. R. (2003). Mixed muscle protein fractional synthetic rates increase following endurance exercise in male runners. Medicine and Science in Sports and Exercise, 35(5), Supplement abstract 1917.

Protein fractional synthetic rate (FSR) in the vastus lateralis was measured in male endurance runners (N = 3) on two occasions; at rest and following a 75-minute endurance run at 70% VO2peak. Protein intakes were determined for three days before each measurement session. Post exercise controlled feeding was also instituted.

No protein FSR differences between the two sets of measures were observed. There was a significant increase (80%) from pre- to post-exercise in protein FSR.

Implication. Protein FSR increases in post-endurance runs were similar to, and in some cases greater than, increases reported for post-resistance exercise.

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