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The effect of differing Cardan angle sequences on three dimensional lumbo-pelvic angular kinematics during running
A G Schache1, T V Wrigley, P D Blanch
1Centre for Sports Medicine Research and Education, School of Physiotherapy, The University of Melbourne, Melbourne, Australia. a.schache@pgrad.unimelb.edu.au
Medical Engineering & Physics
|September 28, 2001
Summary
Different Cardan angle sequences minimally impact three dimensional (3D) lumbo-pelvic motion during running. This study found no substantial differences in running kinematics, regardless of the sequence used for analysis.
Area of Science:
- Biomechanics
- Human Movement Analysis
- Kinesiology
Background:
- Understanding lumbo-pelvic kinematics is crucial for analyzing running mechanics.
- Cardan angle sequences are commonly used to describe three dimensional (3D) joint rotations.
- Variability in sequence selection may influence kinematic analysis outcomes.
Purpose of the Study:
- To quantify the variability of three dimensional (3D) lumbo-pelvic angular kinematic patterns during running.
- To assess the impact of different Cardan angle sequences on these kinematic patterns.
- To determine if sequence choice affects the interpretation of running biomechanics.
Main Methods:
- Four healthy subjects ran on a treadmill at 4.0 m/s.
- Motion capture data were collected using a 6-camera system at 200 Hz.
- Adjusted coefficient of multiple correlation and root mean square differences were used for quantitative comparison.
Main Results:
- Minimal qualitative differences were observed between Cardan angle sequences.
- Quantitative differences in lumbar spine and pelvic rotations did not exceed 7.0 and 2.8 degrees, respectively.
- The chosen sequences did not substantially alter the observed lumbo-pelvic kinematic patterns.
Conclusions:
- Different Cardan angle sequences do not significantly affect the typical three dimensional (3D) lumbo-pelvic angular kinematic patterns during running.
- The findings suggest robustness in analyzing running biomechanics irrespective of the Cardan sequence used.
- This has implications for standardization and comparison of running gait analysis studies.