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J Strength Cond Res. 2008 Jul;22(4):1101-7. doi: 10.1519/JSC.0b013e31816d679b.

Supplemental carbohydrate ingestion does not improve performance of high-intensity resistance exercise.

Author information

1
Human Performance Laboratory, Midwestern State University, Wichita Falls, Texas, USA.

Abstract

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.kgCHO.bodymass 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.

PMID:
18545201
DOI:
10.1519/JSC.0b013e31816d679b
[Indexed for MEDLINE]

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