D-Aspartic Acid Supplementation Combined with 28 Days of Heavy Resistance Training Has No Effect on Body Composition, Muscle Strength, and Serum Hormones Associated with the Hypothalamo-Pituitary-Gonadal Axis in Resistance-Trained Men
Willoughby DS, Leutholtz B
Published in Nutrition Research
Methodology
Randomized double-blind placebo-controlled trial of 3 g/day D-aspartic acid during 28 days of heavy resistance training in 20 resistance-trained men.
Key Findings
No significant differences between D-aspartic acid and placebo in total or free testosterone, oestradiol, LH, strength or body composition.
Conclusions
D-aspartic acid did not augment hormonal or performance adaptations to resistance training in trained men.
Limitations
Small sample; four-week duration; trained men only.
Supplements Studied
No significant differences between D-aspartic acid and placebo in total or free testosterone, oestradiol, LH, strength or body composition.
Outcomes Measured
No significant differences between D-aspartic acid and placebo in total or free testosterone.
Study Details
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