Real ZMA® is the original Zinc monomethionine and magnesium aspartate supplement developed specifically for performance athletes to improve restful sleep, exercise recovery, decrease cortisol levels and increase anabolic hormone status, particularly IGF-1 (insulin-like growth factor 1).
In trained football players following a nightly regime of ZMA® supplementation over an 8-week period, muscle power and selected blood hormone levels were assessed.
- Zinc and magnesium levels of ZMA supplemented individuals resulted in an average 30% and 6% increase in serum zinc and magnesium respectively. Whereas, the non-supplemented individuals experienced an average decrease of 5% and 8% of serum zinc and magnesium respectively.
- Free testosterone levels of ZMA supplemented individuals resulted in an average 33% increase above original levels. Whereas, free testosterone in non-supplemented individuals decreased an average 10% below original levels.
- IGF-1 levels of ZMA supplemented individuals resulted in an average 3.6% increase above original levels. Whereas, IGF-1 in non-supplemented individuals decreased an average 22% below original levels.
- Muscle strength via torque measurement and functional power in ZMA supplements individuals increased 11% and 18% respectively. Whereas, muscle strength via torque measurement and functional power in non-supplemented individuals increased 2.4% and 9% respectively.
The above results demonstrate the efficacy of ZMA® on muscle attributes and selected hormones in strength-trained, competitive athletes.
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