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Volleyball players jump higher with Magnesium - RCT 2014

Magnesium status and the physical performance of volleyball players: effects of magnesium supplementation.

J Sports Sci. 2014;32(5):438-45. doi: 10.1080/02640414.2013.828847. Epub 2013 Sep 9.
Setaro L1, Santos-Silva PR, Nakano EY, Sales CH, Nunes N, Greve JM, Colli C.
1a Department of Food and Experimental Nutrition , Faculty of Pharmaceutical Sciences of University of São Paulo , São Paulo , Brazil.

VitaminDWiki Summary

Radomized Controlled Trial for 4 weeks
Used 350 mg of Magnesium with professional Volleyball players (people who really know how to jump)
Up to 3 cm higher jump in those getting Magnesium
From web: A countermovement jump is where the jumper starts from an upright standing position, makes a preliminary downward movement by flexing at the knees and hips, then immediately extends the knees and hips again to jump vertically up off the ground

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The aim of this study was to test the hypothesis that magnesium supplementation influences the physical performance of volleyball players, as the efficacy of this approach remains questionable. Twenty-five professional male volleyball players were assigned randomly to experimental (350 mg Mg · d(-1), 4 weeks) and control groups (500 mg maltodextrin · d(-1), 4 weeks) maintaining inter-group homogeneity of urinary magnesium. Erythrocyte, plasma and urinary magnesium levels, plasma creatine kinase activity, lactate production, maximal oxygen uptake (VO2 max) and plyometric (squat jump, countermovement jump, countermovement jump with arm swing) and isokinetic (peak torque, potency and total work) performances were evaluated before (T0) and after (T1) supplementation. Levels of erythrocyte and urinary magnesium and creatine kinase activity and VO2 max remained within normal ranges in both groups. Plasma magnesium decreased significantly only within the experimental group. Significant decreases in lactate production and significant increases (of up to 3 cm) in countermovement jump and countermovement jump with arm swing values were detected in the experimental group following magnesium supplementation, but not in the control group at T1. It is concluded that magnesium supplementation improved alactic anaerobic metabolism, even though the players were not magnesium-deficient.

PMID: 24015935

Publisher wants $40 for PDF (to find out which form of Magnesium was used, etc)

Attached files

ID Name Comment Uploaded Size Downloads
5723 CM arms.jpg admin 27 Jul, 2015 32.96 Kb 1520
5722 cm jump.jpg admin 27 Jul, 2015 10.17 Kb 1840