Effects of acute carbohydrate ingestion on anaerobic exercise performance

Ben M. Krings; Jaden A. Rountree; Matthew J. McAllister; Patrick M. Cummings; Timothy J. Peterson; Brent J. Fountain; JohnEric W. Smith

doi:10.1186/s12970-016-0152-9

Journal of the International Society of Sports Nutrition

Table 2 Performance during resistance training exercises

From: Effects of acute carbohydrate ingestion on anaerobic exercise performance

		Total reps	15 g/h	30 g/h	60 g/h
Bench Press	CON	9.7 ± 2.9	27.9 %; 1.3 to 4.1 (0.83) 99.4 %, very likely (4) p = 0.01	20.6 %; 0.7 to 3.3 (0.72) 98.2 %, very likely (6) p = 0.03	20.6 %; 0.5 to 3.5 (0.66) 97.5 %, very likely (7) p = 0.04
	15 g/h	12.4 ± 3.6		-5.8 %; -2.0 to 0.6 (0.22) 78.9 %, likely (63) p = 0.33	-5.8 %; -1.3 to -0.2 (0.21) -95.5 %, very likely (7) p = 0.05
	30 g/h	11.7 ± 2.7			No differences n/a p = 1.00
	60 g/h	11.7 ± 3.2
Bent-Over Row	CON	16.6 ± 5.3	6.9 %; -2.6 to 4.9 (0.18) 68.4 %, possibly (157) p = 0.57	6.0 %; -1.28 to 3.8 (0.20) 71.5 %, possibly (108) p = 0.51	-7.7 %; -3.3 to 0.7 (0.28) -84.9 %, likely (35) p = 0.25
	15 g/h	17.7 ± 7.2		-0.8 %; -3.7 to 3.4 (0.02) 43.5 %, possibly (30886) p = 0.94	-13.7 %; -6.3 to 1.4 (0.42) -85.0 %, likely (24) p = 0.27
	30 g/h	17.6 ± 4.5			-13.0 %; -4.2 to -0.31 (0.56) -96.1 %, very likely (9) p = 0.07
	60 g/h	15.3 ± 3.7
Biceps Curl	CON	12.3 ± 4.9	3.5 %; -0.8 to 1.7 (0.09) 64.0 %, possibly (528) p = 0.53	16.3 %; 0.3 to 3.8 (0.37) 95.4 %, very likely (10) p = 0.07	-5.8 %; -2.3 to 0.9 (0.15) 16.0 %, unlikely (157) p = 0.43
	15 g/h	12.7 ± 4.8		-12.4 %; -1.1 to 4.3 (0.29) 82.0 %, likely (39) p = 0.30	-9.0 %; -2.9 to 0.6 (0.24) -84.0 %, likely (41) p = 0.24
	30 g/h	14.3 ± 5.9			-19.0 %; -5.8 to -0.14 (0.52) -94.7 %, likely (11) p = 0.09
	60 g/h	11.6 ± 4.6
Overhead Triceps Extension	CON	13.7 ± 4.5	7.3 %; -1.1 to 3.1 (0.21) 76.3 %, likely (80) p = 0.39	2.1 %; -2.0 to 2.5 (0.07) 54.5 %, possibly (1659) p = 0.81	-1.0 %; -2.0 to 1.7 (0.03) 37.0 %, possibly (10992) p = 0.88
	15 g/h	14.7 ± 5.2		-4.9 %; -3.6 to 2.2 (0.15) 28.8 %, possibly (261) p = 0.65	-4.9 %; -3.6 to 2.2 (0.15) 28.8 %, possibly (261) p = 0.65
	30 g/h	14.0 ± 4.2			-3.1 %; -3.8 to 3.0 (0.08) 37.13 %, possibly (1308) p = 0.82
	60 g/h	13.6 ± 5.8

Data indicate total repetitions for all RT exercises with ingestion of 15, 30, and 60 g/h of 2:1 glucose: fructose (mean total repetitions ± SD) and %improvement in total repetitions [1st line: %improvement, 90 % confidence interval limits, and Cohen’s effect size (ES; in parentheses); 2nd line: chances (% and qualitative) of meaningful improvement (>0.5 % CV) and sample size needed for a magnitude-based inference about the practical significance of the observed changes in performance for a power of 80 % (in parentheses); 3rd line: exact P value from pairwise t-tests]

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