The effects of joint hypermobility syndrome on the kinematics and kinetics of the vertical jump test

Alsiri, Najla; Cramp, Mary; Barnett, Sue; Palmer, Shea

Abstract

Purpose: Biomechanical impairments are not apparent during walking in people with Joint Hypermobility Syndrome (JHS). This research explored biomechanical alterations during a higher intensity task, vertical jumping. Materials and methods: This cross-sectional study compared a JHS group (n = 29) to a healthy control group (n = 30). Joint kinematics and kinetics were recorded using a Qualisys motion capture system synchronized with a Kistler platform. Independent sample t-tests and standardised mean differences (SMD) were used for statistical analysis. Results: No significant statistical or clinical differences were found between groups in joint kinematics and jump height (p ≥ 0.01). Sagittal hip and knee peak power generation were statistically lower in the JHS group during the compression phase (p ≤ 0.01), but not clinically relevant (SMD < 0.5). Clinically relevant reductions were found in the JHS group knee and ankle peak moments during the compression phase, and hip and knee peak power generation during the push phase (SMD ≥ 0.5), although these were not statistically significant (p ≥ 0.01). Conclusion: The JHS group achieved a similar jump height but with some biomechanical alterations. Further understanding of the joint biomechanical behavior could help to optimize management strategies for JHS, potentially focusing on neuromuscular control and strength/power training.

• Journal Article Type: Article
• Acceptance Date: Oct 9, 2020
• Online Publication Date: Oct 13, 2020
• Publication Date: Dec 1, 2020
• Deposit Date: Oct 12, 2020
• Publicly Available Date: Oct 14, 2021
• Journal: Journal of Electromyography and Kinesiology
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 55
• Article Number: 102483
• DOI: https://doi.org/10.1016/j.jelekin.2020.102483
• Keywords: Joint Hypermobility Syndrome, kinematics, gait, vertical jump, three-dimensional
• Public URL: https://uwe-repository.worktribe.com/output/6774885