Haff, G. G., Schroeder, C. A., Koch, A. J., Kuphal, K. E., Comeau, M. J., & Potteiger, J. A. (1999). The effects of carbohydrate supplementation on performance during a resistance training bout. Medicine and Science in Sports and Exercise, 31(5), Supplement abstract 481.

The effects of carbohydrate (CHO) supplementation on isokinetic leg extension/flexion was examined in resistance-trained males (N = 8). Ss were given CHO or a placebo while performing 16 sets of 10 repetitions at 120 deg/s on a Cybex II Isokinetic Dynamometer.

Total work and average work improved significantly in the CHO condition. Blood glucose readings were higher for the CHO treatment. Free-fatty acid and lactate measures did not differ between treatments. The anaerobic threshold was higher for the quadriceps, but not hamstrings, in the CHO condition.

Implication. CHO supplementation increases the amount of repetitive work in a resistance training session.

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