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Published on: April 13, 2016
Reproducibility of a triaxial seismic accelerometer (DynaPort)
Vincent T Van Hees1, Sander M Slootmaker, Gert De Groot
1Faculty of Human Movement Sciences, VU University, Amsterdam, The Netherlands.
Medicine and Science in Sports and Exercise
|March 12, 2009
Summary
This study shows high reproducibility for a triaxial seismic accelerometer. The device demonstrated excellent accuracy in both controlled laboratory settings and real-world walking conditions, making it reliable for research.
Area of Science:
- Biomechanics
- Wearable technology
- Seismic measurement
Background:
- Triaxial seismic accelerometers are increasingly used in research.
- Assessing device reproducibility is crucial for data validity.
Purpose of the Study:
- To evaluate the reproducibility of a triaxial seismic accelerometer.
- To test the device under controlled and real-life conditions.
Main Methods:
- Instrumental reproducibility assessed using a shaker device at various frequencies and accelerations.
- Real-life reproducibility evaluated in adolescents during walking trials.
- Accelerometer detachment and reattachment procedures simulated real-world use.
Main Results:
- High intra- and interinstrumental reproducibility with intraclass correlation coefficients (ICC) of 0.99.
- Low coefficients of variance (CoV) below 1.37% for interinstrumental measurements.
- Strong intraobserver (ICC=0.97) and interobserver (ICC=0.88) reproducibility.
Conclusions:
- The triaxial seismic accelerometer exhibits high reproducibility.
- The device is reliable under controlled laboratory conditions.
- The accelerometer demonstrates consistent performance in real-world walking scenarios.
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