Το D-Aspartic Acid Δεν Έχει Επίδραση Στις Ορμόνες

Μια καινουργια και σχετικα καλη ερευνα για το γνωστο συμπληρωμα που πολλοι απο εμας εχουμε παρει, d-aspartic acid.

Με λιγα λογια για να μην τα πολυλογουμε η ερευνα κοιταξε τα αποτελεσματα ληψης 3γρ d-aspartic acid εναντι 3γρ placebo σε ηδη προπονημενους με αντιστασεις ανδρες σε συνδυασμο με προπονηση 4 x εβδομαδα για 28 μερες. Και τα 2 γκρουπ βελτιωσαν δυναμη και body composition αλλα δεν υπηρχαν διαφορες μεταξυ των δυο γκρουπ. Ολικη και ελευθερη τεστοστερονη μετρηθηκαν μαζι με αλλες ορμονες και δεν βρεθηκαν διαφορες μεταξυ των 2 γκρουπ.

Συμπερασματικα η ερευνα κατελληξε στο οτι στη συγκεκριμενη δοσολογια η χορηγηση d-aspartic acid για την υπερυθμιση των ορμονων, δεν εχει καμια αναβολικη η εργογενικη επιδραση στον μυικο ιστο.

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.

Department of Health, Exercise and Biochemical Nutrition Lab, Human Performance, and Recreation, Baylor University, Waco, TX, USA. Electronic address: darryn_willoughby@baylor.edu.
Abstract

It was hypothesized that d-aspartic acid (D-ASP) supplementation would not increase endogenous testosterone levels or improve muscular performance associated with resistance training. Therefore, body composition, muscle strength, and serum hormone levels associated with the hypothalamo-pituitary-gonadal axis were studied after 28 days of resistance training and D-ASP supplementation.

Resistance-trained men resistance trained 4 times/wk for 28 days while orally ingesting either 3 g of placebo or 3 g of D-ASP. Data were analyzed with 2 ? 2 analysis of variance (P < .05). Before and after resistance training and supplementation, body composition and muscle strength, serum gonadal hormones, and serum D-ASP and d-aspartate oxidase (DDO) were determined. Body composition and muscle strength were significantly increased in both groups in response to resistance training (P < .05) but not different from one another (P > .05).

Total and free testosterone, luteinizing hormone, gona***ropin-releasing hormone, and estradiol were unchanged with resistance training and D-ASP supplementation (P > .05). For serum D-ASP and DDO, D-ASP resulted in a slight increase compared with baseline levels (P > .05). For the D-ASP group, the levels of serum DDO were significantly increased compared with placebo (P < .05). The gonadal hormones were unaffected by 28 days of D-ASP supplementation and not associated with the observed increases in muscle strength and mass.

Therefore, at the dose provided, D-ASP supplementation is ineffective in up-regulating the activity of the hypothalamo-pituitary-gonadal axis and has no anabolic or ergogenic effects in skeletal muscle.