Effects of Plyometric Jump Training on Vertical Jump Height of Volleyball Players: A Systematic Review with Meta-Analysis of Randomized-Controlled Trial

Table 1. Characteristics of PJT programs and included participants.

	N	Gender	A	BM	H	SPT	Fitness level*	Test	Freq	Wk	Int	BH	TJ	Type	Comb	RBSE	RBR	RBTS	Surf	PO	TP	R	T
Amato et al., 2018	12	NR	11.6	48.5	156	NR	MOD (>3 y of practice)	CMJ (cm)	2	6	NR	NA	880	Mix	Isometric squat	NR	NR	NR	NR	V	NR	NR	No
Behrens et al., 2014	13	M-F	24	77	183	No	Normal to MOD	CMJ (cm)	2	8	Maximal	40	972	Mix	No	90	4	3	Rigid	V	IS	A	No
Cimenli et al., 2016	12, wood	M	18 to 24	73.7	184	NR	MOD to high	CMJA with step (cm)	3	8	NR	30-70	3,000	Mix	No	120	NR	48-72	Wood	T, V	PS	NR	No
Cimenli et al., 2016	12, synthetic	M	18 to 24	83.1	185	NR	MOD to high	CMJA with step (cm)	3	8	NR	30-70	3,000	Mix	No	120	NR	48-72	Synthetic	T, V	PS	NR	No
Fathi et al., 2019	20 (with RT)	M	14.7	68.7	177	No	NR	CMJ (cm)	2	16	Low, MOD and high	30-50	576	Mix	RT	90	NR	≥48	NR	V, T, I	IS	NR	No
Fathi et al., 2019	20 (without RT)	M	14.6	67.9	178	No	NR	CMJ (cm)	2	16	Low, MOD and high	30-40	1,184	Mix	No	90	NR	≥48	NR	V, T, I	IS	NR	No
Gjinovci et al., 2017	21	F	21.8	60.8	176	Yes	High	CMJ (cm)	2	12	Low, MOD and high	NR	>924	Mix	No	120-240	NR	NR	NR	I, V	NR	A	No
Idrizovic et al., 2018	13	F	16.6	59.4	175	Yes	High	CMJ (cm)	1	12	Low, MOD and high	20-60	613	Mix	No	120-300	NR	168	Wood	V, T, I	PS	A	No
Kamalakkannan et al., 2011	12, water (with weights)	NR	18 to 20	NR	NR	NR	Normal to MOD	CMJA (cm)	3	12	NR	NR	4,080	Mix	No	30-90	NR	NR	Water	V, T	NR	NR	Yes
Kamalakkannan et al., 2011	12, water (without weights)	NR	18 to 20	NR	NR	NR	Normal to MOD	CMJA (cm)	3	12	NR	NR	4,080	Mix	No	30-90	NR	NR	Water	V, T	NR	NR	Yes
Maffiuletti et al., 2002	10	M	21.8	80.5	191	NR	MOD	CMJ (cm)	3	4	Maximal	40	600	RBVJ	Electro stimulation	180	NA	NR	NR	No	PS	A	No
Martel et al., 2005	10	F	15	64	167	No	High	CMJA (cm)	2	6	Maximal	61	>138	Mix	No	30	NR	NR	Water	V	PS	A	No
Newton et al., 1999	8	M	19	84	189	Yes	High	CMJA (cm)	2	8	30-80% 1RM	NA	576	Loaded jump squat	No	NR	NR	NR	NR	No	PS	R	No
Pereira et al., 2015	10	F	14.0	52.0	160	No	MOD	CMJ (cm)	2	8	Maximal	NA	2,376	Mix	No	120-180	NR	48	NR	V, I	IS	A	No
Turgut et al., 2016	8, weighted jump rope	F	15	59.4	166	NR	MOD to high	CMJA (W)	3	12	NR	NA	5,490 s	Rope jumps	No	30, 40, 50, 60 (1:1 work: rest ratio)	NA	NR	NR	V	NR	R	No
Turgut et al., 2016	9, standard jump rope	F	14.1	57.7	165	NR	MOD to high	CMJA (W)	3	12	NR	NA	5,490 s	Rope jumps	No	30, 40, 50, 60 (1:1 work: rest ratio)	NA	NR	NR	V	NR	R	No
Usman and Shenoy, 2019	30, plyo	M	19.6	66	176	No	MOD	CMJA (cm)	2	8	NR	30-80	2,976	Mix	No	60-600	5-10	NR	NR	No	NR	NR	No
Usman and Shenoy, 2019	30, plyo + stretching	M	19.6	66	176	No	MOD	CMJA (cm)	2	8	NR	30-80	2,976	Mix	Stretching	60-600	5-10	NR	NR	No	NR	NR	No
Usman and Shenoy, 2015	30, male	M	19.2	66	176	No	MOD	CMJA (cm)	2	8	NR	30-80	2,976	Mix	No	60-300	5-10	48-120	NR	No	NR	NR	No
Usman and Shenoy, 2015	30, female	F	19.2	66	176	No	MOD	CMJA (cm)	2	8	NR	30-80	2,976	Mix	No	60-300	5-10	48-120	NR	No	NR	NR	No

A: age of subject (years); BH: box height for plyometric drop jumps (cm); BM: body mass (kg); CMJ: countermovement jump; CMJA: countermovement jump with arms; Comb: combined; F: female; Freq: frequency of training (days/week); H: height of participants (cm); Int: intensity of training. For maximal, this involved either maximal effort to achieve maximal height, distance, reactive strength index, velocity, or another marker of intensity; IS: in-season; M: male; MOD: Moderate; N: number of participants; PJT: plyometric jump training; PO: progressive overload, in the form of either volume (i.e., V), intensity (i.e., I), type of drill (i.e., T), or a combination of these; PS: pre-season; R: replacement of habitual training drills with plyometric jump training drills; RBR: rest between repetitions; RBSE: rest between sets and/or exercises; RBTS: rest between training sessions; RBVJ: repeated bilateral vertical jumps; RT: resistance training; SPT: systematic plyometric jump training experience; SSC: stretch-shortening cycle; Surf: surface type; T: tapering; TJ: total plyometric jumps; TP: training period of the season; Type: type of PJT drill. When “Mix” is indicated, this involved a combination of 2 or more of the following jumping drills: vertical, horizontal, bilateral, unilateral, repeated, non-repeated, lateral, cyclic, sport-specific, slow stretch-shortening cycle, fast stretch-shortening cycle; Wk: weeks of training.*Fitness level: high, for professional/elite athletes with regular enrollment in national and/or international competitions, highly trained participants with >10 training hours per week or >6 training sessions per week and a regularly scheduled official and friendly competitions. Moderate, for non-elite/professional athletes, with a regular attendance in regional and/or national competitions, between 5 and 9.9 training hours per week or 3–5 training sessions per week and a regularly scheduled official and friendly competitions. Normal, for recreational athletes with <5 training hours per week with sporadic competitions’ participation, and for physically active participants and school-age youths regularly involved in physical education classes.