INTRODUCTION: Previous investigations have examined nutrient timing with untrained subject and less is known about effects in trained subjects.
OBJECTIVES: The purpose of this study was to examine the effects of a carbohydrate and protein supplement (CHO+PROT) on performance measures in trained weightlifters.
METHODS: 10 trained weightlifters (30.8±5.1 years, 177.4 ±4.0 cm, 94.3 ± 12.4 kg, training age = 5.3 ± 2.9 years) completed a 12 week training program utilizing block periodization. Using a double blind placebo design, jump height, scaled peak power measured in vertical jumps and peak force and rate of force development measured in isometric mid-thigh pulls were compared between groups using a series of 2x4 (group x time) repeated measures ANOVA’s.
RESULTS: No significant differences (p > 0.05) were observed between treatment and placebo groups in respect to measures of jump height and peak power with weighted and unweighted jumps. Likewise, no statistical differences (p > 0.05) were observed for peak force or rate of force development with isometric mid-thigh pulls.
CONCLUSION: These findings indicate that a CHO+PROT supplement provided no additional performance benefits compared to a placebo within a 12 week block periodization protocol in trained weightlifters.
Taber, C.B., Deweese, B.H., Soto, K., Stuart, C.A. & Stone, M.H. (2017). Effects of a carbohydrate and protein recovery beverage on performance in trained weightlifters. Journal of Negative & No Positive Results, 2(5), 194-201. doi:10.19230/jonnpr.1364
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