This new analysis looked at 12 studies investigating the effects of caffeine on three aspects: muscular strength, muscular endurance, and mean velocity.

这项新的分析着眼于 12 项研究，调查咖啡因对三个方面的影响：肌肉力量、肌肉耐力和平均速度。

And finally, for mean velocity, it was very clear that low doses do provide an improvement similar to higher doses, but unfortunately, there were only 2 studies investigating this outcome.

最后，对于平均速度，很明显，低剂量确实提供了类似于高剂量的改善，但不幸的是，只有两项研究调查了这一结果。