Caffeine improves performance but not duration of the countermovement jump phases.

CONCLUSIONS: Acute caffeine supplementation leads to improved CMJ height, Vmax, AP and PP without significantly affecting the duration of the different test phases. Therefore, caffeine supplementation may be employed as ergogenic aid in sports where CMJ performance has been associated with sport-specific performance enhancements. PMID: 32720780 [PubMed - as supplied by publisher]
Source: Journal of Sports Medicine and Physical Fitness - Category: Sports Medicine Tags: J Sports Med Phys Fitness Source Type: research