Taekwondo-Based Core Stability Exercises Improve Functional Movement Screen Scores and Lumbar Sagittal Curvature in Individuals with Hyperlordosis: A Quasi-Experimental Study

Abstract

Background: Lumbar hyperlordosis is associated with impaired lumbopelvic stability and dysfunctional movement patterns. Core stability exercises (CSE) are widely used to address these impairments. Objectives: This study aimed to evaluate the effects of taekwondo-based core stability exercises on lumbar sagittal curvature characteristics and functional movement patterns in individuals with lumbar hyperlordosis. Methods: In this quasi-experimental pre-post study, 30 male participants aged 18 - 25 years with lumbar hyperlordosis were recruited through convenience sampling and allocated to an experimental group (n = 15) and a control group (n = 15). The experimental group completed an 8-week taekwondo-based CSE program comprising three sessions per week, whereas the control group continued with regular daily activities. Lumbar sagittal curvature was assessed using the Spinal Mouse device (IDIAG M360) based on C7–S3 spinal scanning, and functional movement patterns were assessed using the Functional Movement Screen (FMS). Data were analyzed using analysis of covariance (ANCOVA) with a significance level of P < 0.05. Results: The results showed that the experimental group outperformed the control group across all FMS components (P < 0.05). Moreover, lumbar sagittal curvature decreased significantly after the intervention (P = 0.003). Conclusions: Taekwondo-based CSE appears to be an effective intervention for improving functional movement and reducing the excessive lumbar sagittal curvature associated with hyperlordosis. However, limitations such as the small sample size, lack of randomization, and short intervention duration warrant cautious interpretation. Future randomized controlled trials with larger samples and long-term follow-up are needed to confirm these findings.