Supplemental Carbohydrate Ingestion Does Not Improve Performance of High-Intensity Resistance Exercise

• Autores: Justin R. Kulik, Chad D. Touchberry, Naoki Kawamori, Peter A. Blumert, Aaron J. Crum, G. Gregory Haff
• Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 22, Nº. 4, 2008, págs. 1101-1107
• Idioma: inglés
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• Resumen

  • Kulik, JR, Touchberry, CD, Kawamori, N, Blumert, PA, Crum, AJ, and Haff, GG. Supplemental carbohydrate ingestion does not improve performance of high-intensity resistance training. J Strength Cond Res 22: 1101-1107, 2008-The effects of supplemental carbohydrate (CHO) ingestion on the performance of squats to exhaustion (STE) were investigated with eight resistance-trained men. Subjects participated in a randomized, counterbalanced, double-blind, placebo-controlled protocol with testing separated by 7 days. Subjects consumed 0.3g[middle dot]kgCHO[middle dot]bodymass-1 or a placebo (PLC) of equal volume immediately before exercise and after every other successful set of squats. The STE consisted of sets of five repetitions at an intensity of 85% 1 repetition maximum (1RM). Performance measured as total sets (CHO 3.5 +/- 3.2, PLC 3.5 +/- 2.7), repetitions (CHO 20.4 +/-14.9, PLC 19.7 +/- 13.1), volume load (CHO 2928.7 +/- 2219.5 kg, PLC 2772.8 +/- 1951.4 kg), and total work (CHO 29.9 +/- 22.3 kJ, PLC 28.6 +/- 19.5 kJ) was not statistically different between the CHO and PLC treatments. The results suggest that CHO supplementation does not enhance performance of squats performed with 85% 1RM to volitional failure.