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Exploration of Inertial Sensor-Derived Kinematic Predictors for Dynamic Balance Assessment in the Active Adult
Chairat Phuaklikhit1,2, Vaibhav R Shah3,4, Satoshi Muraki5
1Graduate School of Design, Faculty of Design, Kyushu University, Fukuoka, Japan.
Open Access Journal of Sports Medicine
|July 16, 2025
Summary
Ankle dorsiflexion predicts anterior balance, while body center of mass and hip flexion are key for posterior balance during the modified Star Excursion Balance Test (mSEBT). This improves dynamic balance assessment.
Area of Science:
- Biomechanics
- Kinesiology
- Sports Medicine
Background:
- Dynamic balance assessment is crucial in clinical settings.
- The modified Star Excursion Balance Test (mSEBT) is a widely used tool.
- Limited research exists on body and joint sway during the mSEBT.
Purpose of the Study:
- To investigate the relationship between center of mass (COM) and lower limb kinematics.
- To identify kinematic predictors of performance on the mSEBT.
Main Methods:
- Twenty-seven participants without lower limb instability.
- Inertial sensors placed on the trunk, thigh, shank, and foot.
- Spearman rank correlation and stepwise multiple regression analyses were used.
Main Results:
- Ankle dorsiflexion strongly predicted anterior reach (r² = 0.34).
- COM displacement was the strongest predictor for posteromedial (r² = 0.55) and posterolateral (r² = 0.57) reach.
- COM and hip flexion explained 65% of the variance in posterior reach.
Conclusions:
- Ankle dorsiflexion is vital for anterior dynamic balance.
- Hip flexion and COM displacement are critical for posterior dynamic balance.
- Understanding these factors can refine mSEBT assessment methodologies.
