动物造模 z-bio 2021-07-21 476

　　Objective: To study the effects of maca extract on exercise endurance and blood hormone levels.

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

　　Result: 15 days after administration of Maca extract 2.0, 4.0, 8.0g/(kg?bw), the swimming time and the total swimming time until sinking were extended by 32.51~60.04~106.52~16.99~ respectively. In the pure swimming group, compared with the swimming group alone, 56.50?101.73?Pu003c0.01) and settlement time were shortened by 18.89?35.89?58.06?Pu003c0.01). it is. Compared with the control group, the blood NA level of rats increased by 3.30, 6.60, 16.50, and 42.49, 47.05, 60.70, and the blood E2 level increased by 132.83, 102.72, 62.26, Pu003c0.01), respectively, compared with the swimming group alone. The swimming group alone was 23.88? 33.72? 46.95? lower blood T levels than the control group were 5.11? 37.65? 123.16? 28.98? and become expensive. Only the swimming group, 68.92?173.85?Pu003c0.01).

　　Conclusion: Maca extract can reduce fatigue and improve athletic performance. This mechanism is related to increased A and T levels and decreased E2 levels in the blood.