动物实验,玛咖提取物 z-bo 2020-09-04 443

　　Objective: To explore the effect of maca extract on exercise endurance and blood hormone levels.

　　Method: Use circulating water to swim freely, and give Wistar rats 2.0, 4.0 and 8.0 g/(kg? bw) maca extract for 15 days. On day 16, the blood levels of norepinephrine (NA), estradiol (E2) and testosterone (T) were detected by enzyme-linked immunosorbent assay (ELISA).

　　Result: The Maca extract 2.0, 4.0 and 8.0g/(kg?bw) were given for 15 days. Compared with the pure swimming group, the swimming time before sinking and the total swimming time were 32.51%. , 60.04%, 106.52%, 16.99% expansion. Compared with the swimming group alone, it reduced by 56.50%, 101.73% (P \u003cu\→ u0.01c0.01) and sinking number (P \u003cu\→ c\→ u) (P \u003cu\→ u0c0. 01). Compared with the swimming group alone, the blood NA levels of rats increased by 3.30%, 6.60%, 16.50% and 42.49%, 47.05%, 60.70%, respectively. Compared with the control group, the E2 level in the blood increased by 132.83% and 102.72%, respectively. Compared with the swimming group alone, they were reduced by 62.26% (P\u003c0.01), 23.88%, 33.72%, and 46.95%; blood T levels were increased by 5.11%, 37.65%, and 123.16% compared with the control group and the swimming group. The ratio is only 28.98%, 68.92%, 173.85% (P\u003c0.01).

　　Conclusion: Maca extract has the effect of reducing fatigue and improving sports performance. This mechanism is related to increased blood NA and T levels and decreased E2 levels.