Recovery of endurance running capacity: Effect of carbohydrate-protein mixtures

Reference:

Betts, J. A., Stevenson, E., Williams, C., Sheppard, C., Grey, E. and Griffin, J., 2005. Recovery of endurance running capacity: Effect of carbohydrate-protein mixtures. International Journal of Sport Nutrition and Exercise Metabolism, 15 (6), pp. 590-609.

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Abstract

Including protein in a carbohydrate solution may accelerate both the rate of glycogen storage and the restoration of exercise capacity following prolonged activity. Two studies were undertaken with nine active men in study A and seven in study B. All participants performed 2 trials, each involving a 90 min run at 70% VO2max followed by a 4 h recovery. During recovery, either a 9.3% carbohydrate solution (CHO) or the same solution plus 1.5% protein (CHO-PRO) was ingested every 30 min in volumes providing either 1.2 g CHO (.) kg(-1) (.) h(-1) (study A) or 0.8 g CHO (.) kg(-l) (.) h(-1) (study B). Exercise capacity was then assessed by run time to exhaustion at 85% VO2max. Ingestion of CHO-PRO elicited greater insulinemic responses than CHO (P

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