https://www.selleckchem.com/pr....oducts/2-aminoethyl-
5 ± 2.1, 9.9 ± 2.2, 7.6 ± 1.7, and 8.0 ± 1.6 J·kg-1·m-1 (p less then 0.01). There were no interaction effects for any of these variables. RPE (6-2 and blood lactate concentration post Drill1-Drill4 were 17.5, 15.5, and 13.0 (overall, legs and arms, p less then 0.001) and 5.9 ± 2.0, 4.9 ± 1.9, 5.6 ± 2.0, and 5.0 ± 2.2 mmol·l-1 (p less then 0.05). The findings of this study demonstrate that the on-court tennis drills performed here are suitable for high intensity training in junior tennis players. The energy expend