TABLE 2.

Multiplicity of included studies

Study	Athletic performance	Multiplicity of Outcome	Selected for meta-Analysis
Botton et al. [29]	Bilateral strength	Isokinetic knee extension
		Knee extension 1RM	√
	Unilateral strength	Isokinetic knee extension
		Knee extension 1RM	√
Ramirez-Campillo et al. [40]	Bilateral strength	Knee extension 1RM	√
		Knee flexion 1RM
	Unilateral Jump	Countermovement jump	√
		Horizontal crossover triple jumps
		Horizontal triple jumps
		Squat jump
	Bilateral Jump	Countermovement jump	√
		Squat jump
		Horizontal jump
		Horizontal triple jumps
Stern et al. [25]	Unilateral Jump	Drop jump
		Countermovement jump	√
		Horizontal jump
	Bilateral Jump	Drop jump
		Countermovement jump	√
	Speed	10 m	√
		30 m
Gonzalo-Skok. [41]	Unilateral jump	Countermovement jump	√
		Lateral jump
		Horizontal jump
	Change of Direction	10 m shuttle	√
		20 m shuttle
		25 m shuttle
	Speed	10 m	√
		20 m
		25 m
Javier Nunez et al. [42]	Change of Direction	5 m–90º–5 m
		5 m shuttle	√