It has also been shown that exercise can lead to increased losses of zinc and magnesium(4,5). Zinc is particularly important from a bodybuilding standpoint due to its vital role in testosterone production(2).
Low levels of zinc and magnesium have a strong adverse effect on muscle growth(7). What makes ZMA® different is the patented forms(1) of the zinc, and the ratio in which it is combined with magnesium aspartate and Vitamin B6.
A recent study showed that this patent formula(1) of ZMA® when given to training athletes resulted in 43.7% higher testosterone levels(2) and 25% greater IGF-1 levels(3), as well as a 2.5 times greater strength increase compared to the placebo group.
ZMA® supplementation has shown to significantly decrease levels of the catabolic “stress” hormone, cortisol. In a double blind, randomized study of 23 triathletes, serum cortisol was lower in the ZMA® supplemented group before and after competition compared to the placebo group(10).
ZMA® contains minerals you may not be getting enough of and you definitely need. An important thing to note is that the zinc and magnesium must be in the aspartate form, not the chelate, sulfate, or citrate form commonly found in multivitamins. The ratio is also extremely important. (This is why you should use a ZMA® supplement instead of individual magnesium and zinc supplements.) This supplement should not be taken with calcium, as calcium lowers absorption.
A special aspect of ZMA® was the inclusion of vitamin B6 to enhance the absorption of the Zinc and Magnesium (8,9) in addition to the known properties of vitamin B6 in protein metabolism.
Store in a dry cool place away from light.
All 3 products can be stacked together to have a synergistic effect to further enhance testosterone levels.
2. L.R. BRILLA1 AND VICTOR CONTE Exercise and Sports Science Laboratory, Western Washington University, Bellingham, WA 98225-9067 and BALCO Laboratories, 1520 Gilbreth Road, Burlingame, CA 94010
3. Dorup I, Flyvbjerg A, Everts ME, Clausen T. Role of insulin-like growth factor-1 and growth hormone in growth inhibition induced by magnesium and zinc deficiencies. Br J Nutr 1991:66:505-21.
4. Konig D, Weinstock C, Keul J, Northoff H, Berg A. Zinc, iron, and magnesium status in athletes-influence on the regulation of exercise-induced stress and immune function. Exerc Immunol Rev 1998:4:2-21.
5. Cordova A, Navas FJ. Effect of training on zinc metabolism — changes in serum and sweat zinc concentrations in sportsmen. Ann Nutr Metab 1998:42:274-82.
6. Hawley JA, Dennis SC, Lindsay FH, Noakes TD. Nutritional practices of athletes — are they sub-optimal? J Sports Sci 1995:13:S75-81.
7. Brilla LR, Lombardi VP. Magnesium in sports physiology and performance. In: Kies CV, Driskell JA, editors. Sports Nutrition: Minerals and Electrolytes, An American Chemical Society Monograph. Boca Raton, FL: CRC Press, 1995:139-77.
8. Evans GW, Johnson EC. Effect of iron, vitamin B-6 and picolinic acid on zinc absorption in the rat. J Nutr 1981:111: 68-75.
9. Wichnik A, Schroll A, Kollmer WE, Berg D, Wischnik B, Wieshammer E et al. Magnesium aspartate as a cardioprotective agent and adjuvant in tocolysis with betamimetics. Animal experiments on the kinetics and calcium antagonist action of orally administered magnesium aspartate with special reference simultaneous vitamin B administration. Z Geburtshilfe Perinatol,1982:186:326-34.
10. Golf SW, Bender S, Gruttner J. On the significance of magnesium in extreme physical stress. Cardiovasc Drugs Ther 1998:12:197-202.
Frequently Asked Questions
If I am female can I take ZMA®?
Absolutely ZMA® has many benefits and has been widely studied for many different reasons.
How many capsules are in 1 container?
There is 90 capsules enough to last 30 days at the recommended dosage.