IMPACT OF AN EIGHT-WEEK LOWER BODY STRENGTH TRAINING PROGRAM ON JUMP PERFORMANCE IN NETBALL PLAYERS: A CASE STUDY AT SABARAGAMUWA UNIVERSITY OF SRI LANKA
H.A.N.A.K. Attipola1*, J.A.S.D. Bandara2 and R.P.G. Amithani3
1,2,3Institute of Technology, University of Moratuwa, Homagama, Sri Lanka
Session: Technical Session D
Abstract
Netball is a high-intensity, multidirectional sport that demands a high level of lower body power, especially during jumping actions essential for intercepts, rebounds, and aerial contests. Vertical jump performance is a critical measure of explosive strength and is often linked to success in netball. There is limited evidence on how structured strength training interventions impact university-level female netball players, particularly in South Asian contexts. This study aimed to evaluate the effectiveness of an eight-week lower body strength training program on vertical jump performance among female netball players at Sabaragamuwa University of Sri Lanka. This study was conducted with 14 female netball players (aged 22–24), randomly assigned to an intervention group (n=7) and a control group (n=7). The intervention group underwent an eight-week program incorporating resistance and plyometric exercises performed three times per week. Vertical jump performance was assessed using a standard vertical jump test before and after the intervention. Statistical analysis included the Wilcoxon Signed-Rank Test and Mann-Whitney U Test due to non-normal data distribution. The median vertical jump height increased from 29.8 cm to 32.9 cm, indicating overall improvement. The Wilcoxon Signed -Rank Test showed a significant increase within the intervention group (p = 0.035), and the Mann–Whitney U Test revealed a significant difference compared to the control group (p = 0.0409) thus confirming the effectiveness of the training program. The findings provide strong evidence that an eight-week lower body strength training program can significantly enhance vertical jump performance in university-level netball players. Incorporating such training into regular practice may offer substantial performance benefits in similar athletic populations.
Keywords: netball, lower body strength, vertical jump performance, female athletes
DOI: 10.64752/RUXT6812