Associations between inter-limb asymmetry in lower limb strength and jump performance in 14–15-year-old basketball players
Article
Ding, L., Lyu, M., Chen, Z., Wu, J., Wang, Y., Bishop, C. and Li, Y. 2024. Associations between inter-limb asymmetry in lower limb strength and jump performance in 14–15-year-old basketball players. Symmetry. 16 (11). https://doi.org/10.3390/sym16111421
Type | Article |
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Title | Associations between inter-limb asymmetry in lower limb strength and jump performance in 14–15-year-old basketball players |
Authors | Ding, L., Lyu, M., Chen, Z., Wu, J., Wang, Y., Bishop, C. and Li, Y. |
Abstract | This study aims to (1) assess the inter-limb asymmetry in hip, knee, and ankle strength and countermovement jump (CMJ) performance among adolescent basketball players and (2) examine the relationship between inter-limb asymmetry and CMJ performance. Thirty adolescent basketball players (15 boys and 15 girls), aged 14 to 15 years, participated in the study. The strength of the lower limb joints was measured using an isokinetic dynamometer at a speed of 60 degrees per second. Three maximal CMJs were performed, and the highest jump was used for the final analysis. The subjects were median-split into high-asymmetry (n = 15) and low-asymmetry (n = 15) groups based on the calculated strength asymmetry scores. The asymmetry scores were calculated using the formula: (dominant – non-dominant) / dominant * 100%. The inter-limb asymmetry da-ta ranged from 12.2% to 21.6%. A Spearman correlation analysis showed that only the inter-limb asymmetry of the ankle plantar flexor was significantly correlated with the CMJ heights (ρ = –0.56, p = 0.001). An independent t-test revealed no significant differences in strength asymmetry between boys and girls (all p > 0.05). The low-asymmetry group demonstrated significantly greater CMJ performance compared to the high-asymmetry group (ES = 1.11, 95% CI = 0.34 – 1.87, p = 0.007), indicating that inter-limb asymmetry of the ankle plantar flexor has a significant negative impact on CMJ performance. Coaches should focus on enhancing both the strength and symmetry of the ankle joints to improve athletic performance and prevent injuries in sports, where jumping is a common movement. |
Keywords | basketball; inter-limb asymmetry; jump; strength |
Sustainable Development Goals | 3 Good health and well-being |
Middlesex University Theme | Health & Wellbeing |
Publisher | MDPI AG |
Journal | Symmetry |
ISSN | |
Electronic | 2073-8994 |
Publication dates | |
Online | 25 Oct 2024 |
Nov 2024 | |
Publication process dates | |
Submitted | 08 Jul 2024 |
Accepted | 17 Oct 2024 |
Deposited | 21 Oct 2024 |
Output status | Published |
Publisher's version | License File Access Level Open |
Copyright Statement | © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
Digital Object Identifier (DOI) | https://doi.org/10.3390/sym16111421 |
Language | English |
https://repository.mdx.ac.uk/item/1v629q
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