Unilateral and bilateral jumping performance in female basketball players with and without a history of lower limb injuries

Magdalena Zawadka; Wojciech Talacha; Kamila Oleszczak; Joanna Paprocka; Agata Czepinska; Lena Sobiech; Piotr Gawda

doi:10.5114/areh.2023.131745

Figures & Tables

Modified CONSORT flow diagram of the cross-sectional studyCMJ – counter movement jumps; AKE – active knee extension.

Positions of mobility measurements: ankle plantarflexion (A); ankle dorsiflexion (B); ankle dorsiflexion under weight-bearing (C); active knee extension (D)

Scatterplots for the relationship between single-leg jumps parameters and time since the injury occurred: Height (A); Total energy (B); Frequency (C); Contact time (D)

Summary statistics for CMJ parameters in groups

Variable CMJ	Level of advancement	M	SD	Stat.	Ankle injury	M	SD	Stat.	Knee injury	M	SD	Stat.
Height (cm)	Elite	30.90	3.90	F = 7.94	Injured	29.15	4.67	F = 0.34	Injured	28.00	6.01	Z = 0.31
Height (cm)	University	25.73	4.24	p = 0.01	Control	28.06	5.03	p = 0.57	Control	28.84	4.59	p = 0.75
Specific energy (J/kg)	Elite	3.03	0.38	F = 7.90	Injured	2.86	0.46	F = 0.34	Injured	2.75	0.59	Z = 0.40
Specific energy (J/kg)	University	2.52	0.42	p = 0.01	Control	2.75	0.49	p = 0.57	Control	2.83	0.45	p = 0.68
Total energy (J)	Elite	217.45	35.14	F = 11.59	Injured	197.13	42.85	F = 0.44	Injured	183.28	42.95	Z = 0.40
Total energy (J)	University	156.80	42.09	p = 0.003	Control	183.88	56.53	p = 0.52	Control	193.38	50.5	p = 0.68

Summary statistics for single-leg jump parameters in groups

Variable single-leg jumps	Level of advancement	M	SD	Stat.	Ankle injury	M	SD	Stat.	Knee injury	M	SD	Stat.
Number of jumps/15 s	University	26.00	2.50	p = 0.24	Control	25.24	3.26	p = 0.72	Control	25.58	3.05	p = 0.63
Number of jumps/15 s	Elite	24.83	3.37	F = 1.41	Injured	25.47	2.81	F = 0.13	Injured	23.83	2.86	Z = − 0.49
Specific energy (J/kg)	University	25.81	5.74	p = 0.44	Control	26.41	7.12	p = 0.91	Control	26.12	5.75	p = 0.14
Specific energy (J/kg)	Elite	27.05	6.89	F = 0.61	Injured	26.68	5.29	F = 0.01	Injured	28.90	9.69	Z = 1.47
Total energy (J)	University	1562.51	289.40	p = 0.001	Control	1701.73	385.25	p = 0.48	Control	1743.31	368.80	p = 0.40
Total energy (J)	Elite	1910.87	365.25	F = 11.78	Injured	1849.58	349.75	F = 0.52	Injured	1871.17	423.27	Z = − 0.84
Specific strength(W/Kg)	University	13.87	2.98	p = 0.48	Control	14.12	3.69	p = 0.89	Control	13.98	3.07	p = 0.73
Specific strength(W/Kg)	Elite	14.40	3.70	F = 0.50	Injured	14.25	2.98	F = 0.02	Injured	15.32	5.11	Z = − 0.34
Contact time (s)	University	0.30	0.06	p = 0.37	Control	0.31	0.06	p = 0.42	Control	0.30	0.05	p = 0.82
Contact time (s)	Elite	0.31	0.05	F = 0.81	Injured	0.30	0.04	F = 0.67	Injured	0.31	0.04	Z = − 0.23
Height (cm)	University	10.21	2.68	p = 0.23	Control	10.93	3.75	p = 0.79	Control	10.61	3.03	p = 0.35
Height (cm)	Elite	11.45	3.87	F = 1.51	Injured	10.89	2.99	F = 0.07	Injured	12.73	5.25	Z = − 0.93
Frequency (jumps/s)	University	1.75	0.17	p = 0.30	Control	1.69	0.22	p = 0.67	Control	1.72	0.21	p = 0.14
Frequency (jumps/s)	Elite	1.67	0.24	F = 1.12	Injured	1.72	0.22	F = 0.19	Injured	1.61	0.22	Z = 1.47
Difference max-min (%)	University	0.43	0.13	p = 0.62	Control	0.43	0.12	p = 0.56	Control	0.43	0.13	p = 0.63
Difference max-min (%)	Elite	0.43	0.13	F = 0.25	Injured	0.43	0.13	F = 0.34	Injured	0.43	0.12	Z = − 0.49

Descriptive statistics and comparison of groups

Variable	Level of advancement	M	SD	Stat.	Ankle injury	M	SD	Stat.	Knee injury	M	SD	Stat.
Age (year)	Elite	22.67	4.31	F = 0.32	Injured	21.83	3.27	F = 0.56	Injured	23.75	1.71	Z = −2.39
Age (year)	University	22.00	1.00	p = 0.58	Control	23.11	3.33	p = 0.46	Control	22.06	3.51	p = 0.02
Height (cm)	Elite	179.33	9.58	F = 6.03	Injured	177.42	7.94	F = 1.53	Injured	173.75	11.93	Z = 0.41
Height (cm)	University	169.78	6.53	p = 0.03	Control	172.33	11.15	p = 0.23	Control	175.59	9.29	p = 0.68
Weight (kg)	Elite	72.25	11.86	F = 3.62	Injured	69.00	10.92	F = 0.20	Injured	67.50	12.37	Z = 0.05
Weight (kg)	University	61.89	10.84	p = 0.07	Control	66.22	14.53	p = 0.66	Control	67.88	12.70	p = 0.96
BMI (kg/m²)	Elite	22.35	2.21	F = 1.31	Injured	21.94	1.73	F = 0.001	Injured	21.85	1.80	Z = 0.01
BMI (kg/m²)	University	21.34	2.48	p = 0.25	Control	21.90	2.73	p = 0.97	Control	21.93	2.46	p = 0.99
Years of training	Elite	13.17	4.02	F = 9.43	Injured	10.92	5.38	F = 0.12	Injured	13.50	2.52	Z = −1.99
Years of training	University	7.11	4.51	p = 0.01	Control	10.11	5.09	p = 0.73	Control	9.88	5.41	p = 0.045

Summary statistics for ROM in groups

Variable ROM	Level of advancement	M	SD	Stat.	Ankle injury	M	SD	Stat.	Knee injury	M	SD	Stati.
AKE (°)	Elite	177.21	5.73	Z = 2.16	Injured	176.35	4.70	Z = 0.46	Injured	173.50	6.25	Z = 1.46
AKE (°)	University	174.22	5.36	p = 0.03	Control	175.64	6.38	p = 0.64	Control	176.33	5.61	p = 0.15
Ankle dorsiflexion (°)	Elite	19.63	2.83	F = 29.79	Injured	21.29	3.18	F = 0.60	Injured	21.00	3.22	Z = 0.63
Ankle dorsiflexion (°)	University	25.17	3.09	p < 0.001	Control	22.48	4.50	p = 0.44	Control	22.17	4.15	p = 0.53
Ankle plantarflexion (°)	Elite	40.17	3.20	F = 3.04	Injured	38.82	2.65	F = 1.11	Injured	38.67	2.07	Z = 0.72
Ankle plantarflexion (°)	University	38.39	2.85	p = 0.09	Control	39.80	3.44	p = 0.30	Control	39.53	3.30	p = 0.47
Knee-to-wall (mm)	Elite	92.17	16.69	F = 2.15	Injured	90.77	16.84	F = 0.01	Injured	81.83	16.56	Z = 1.42
Knee-to-wall (mm)	University	86.50	13.66	p = 0.15	Control	89.04	14.92	p = 0.93	Control	91.06	15.21	p = 0.16

Unilateral and bilateral jumping performance in female basketball players with and without a history of lower limb injuries

Figures & Tables

Fig. 1.

Fig. 2.

Fig. 3.

Summary statistics for CMJ parameters in groups

Summary statistics for single-leg jump parameters in groups

Descriptive statistics and comparison of groups

Summary statistics for ROM in groups

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