Beetroot Juice: Anaerobic Performance and Fatigue in Swimmers

The effects of beet juice supplementation on different types of physical performance have been examined in many studies. However, although the number of studies, including the effect of beet juice on physical performance, measuring blood lactate and fatigue levels in swimmers, is limited, most studies focused on acute intake. This study investigated the effects of beetroot juice on anaerobic performance, fatigue, and blood lactate in adolescent male swimmers.Swimmers underwent a single-blind intervention, consuming either a 2x250 ml placebo (0.6 mmol NO3- ) or beetroot juice (8 mmol NO3-) (rich in nitrate, NO3-) for six days. Performance was measured through an 8x100-meter maximal effort swim, with blood lactate and perceived fatigue assessed before and after.