The present disclosure relates to an anti-fatigue Lactobacillus composition. The anti-fatigue Lactobacillus composition, which includes at least one of Lactobacillus brevis GKEX, Lactobacillus plantarum GKK1 and Lactobacillus johnsonii GKJ2 as an active ingredient, administered to a healthy subject for a continuous period of time, can significantly improve fatigue-related biochemical indices and prolong aerobic exercise time to exhaustion, and thus can be used as an active ingredient for preparation of various compositions for anti-fatigue and/or improving athletic ability.

The present disclosure relates to a method for producing fermented green coffee beans and fermented green coffee beans produced thereby, the method including: (A) a step of freezing green coffee beans at 10 to 25 C.; (B) a step of immersing the frozen green coffee beans in water for 3 to 10 hours; (C) a step of taking out the green coffee beans immersed in the water, removing the water and leaving the beans to stand for 5 to 15 hours while supplying air at 20 to 30 C.; (D) a step of sterilizing the green coffee beans and then inoculating the same with a strain to anaerobically ferment the same; and (E) a step of sterilizing and then drying the anaerobically fermented green coffee beans. When the fermented green coffee beans are roasted into coffee beans, aroma and taste may be improved and odor may be removed.