Limitations and strengths of the study
VASODILATATION
One of the limitations of the present study is that we did not measure plasma concentrations of caffeine and citrulline. Secondly, we did not measure possible mediators of the supplements that could have given more insight into the potential interactions between them, such as vasoconstriction and vasodilatation. Thirdly, the majority of participants in the present study were classified as moderate caffeine consumers (Despite the outlined limitations, there are also certain strengths of the study that should be considered. For example, we included a fairly large number of both male and female participants. We evaluated multiple performance outcomes, including jumping-related outcomes (i.e., jump height, RFD, peak force, and peak power), muscular strength and endurance. The barbell back squat and bench press exercises were used to evaluate muscular strength and endurance, miming real-life conditions given the common use of these exercises in various strength and conditioning programs [