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Asian J Kinesiol > Volume 27(1); 2025 > Article
The Asian Journal of Kinesiology 2025;27(1):45-52.
DOI: https://doi.org/10.15758/ajk.2025.27.1.45    Published online January 31, 2025.
Comparison of Core Muscle Activation at Different Hip Angles during Core Exercises Based on Dynamic Neuromuscular Stabilization
Won-Chul Ahn1, Kyoung-Bin Min2  , Myung-Ki Kim2
1Department of Sport Medicine, Korea University, Sejong Campus, Sejong-si, Republic of Korea
2Department of Global Sport Studies, Korea University, Sejong Campus, Sejong-si, Republic of Korea
Correspondence:  Myung-Ki Kim, Department of Global Sport Studies, Korea University, Sejong Campus, Sejong-si, Republic of Korea, Tel: +82-10-4457-2341, 
Email: kmk1905@korea.ac.kr
Received: 16 October 2024   • Accepted: 11 January 2025
Abstract

OBJECTIVES
This study aims to compare core muscle activation at varying hip flexion angles during core exercises based on Dynamic Neuromuscular Stabilization (DNS).
METHODS
Nine healthy male participants, without musculoskeletal or hypertension disorders, performed core exercises at hip flexion angles of 45°, 90°, and 130°, while their muscle activation levels were measured using electromyography (EMG).
RESULTS
While differences in muscle activation were observed across all muscles depending on the hip flexion angle, significant results were found specifically in the rectus femoris, rectus abdominis, and external oblique muscles at different angles (p < 0.05).
CONCLUSIONS
These findings suggest that varying hip angles can selectively engage different core muscles, which may inform rehabilitation and strength training programs targeting specific areas of the core. Further research with a larger sample size and diverse populations is recommended to generalize these findings.
Keywords: Dynamic Neuromuscular Stabilization Core Muscle Hip Flexion Angle EMG Lumbar Stabilization
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