Trunk muscle fatigue and its negative relationship with running economy (RE) is frequently recognized by practitioners but lacks evidence-based support. Thus. this three-armed randomized controlled crossover pilot trial (RCT) examined the effects of trunk and upper body fatigue protocols on RE. trunk muscle isometric rate of force production. https://www.bekindtopets.com/super-super-Handlebar-Stem-for-the-GOTRAX-GXL-V2-Electric-Scooter-hot-choice/