Shank angular deceleration as a weight-acceptance marker in healthy and hip osteoarthritis walking
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- Shank angular deceleration identified as a distinct event during weight acceptance.
- Foot-flat, braking force peak, and opposite toe-off were analyzed alongside SAD.
- SAD timing agreed closely between wearable and optical motion capture methods.
- SAD changed systematically with speed, footwear, and heel-lift conditions.
- Preoperative hip osteoarthritis showed higher asymmetry, reduced after surgery.
Comparative assessment of heel rise detection for consistent gait phase separation
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- We assess motion capture, force plate, and IMU data to identify the most precise heel rise detection method.
- Subtle rising of the heel before the actual lift-off causes variability in heel rise detection.
- Heel marker’s acceleration and jerk-based methods are in high agreement with visual detection.
- Novel IMU-based methods closely mirror the performance of acceleration and jerk-based methods.
- The proposed methods improve heel rise detection accuracy for gait analysis.
A novel method for accurate division of the gait cycle into seven phases using shank angular velocity
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- 15 healthy participants, 24,519 steps, and 9 scenarios.
- Using shank angular velocity, novel method detects gait events with precision.
- Validated for initial contact, heel rise, toe-off, feet adjacent, and tibia vertical.
- Bland-Altman plots, ICC scores show high agreement with gold standard techniques.