Internal Consistency of Sway Measures via Embedded Head-Mounted Accelerometers: Implications for Neuromotor Investigations
Abstract
:1. Introduction
2. Materials and Methods
2.1. Participants
2.2. Testing Protocol
2.3. Data Processing
2.4. Statistical Analysis
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Appendix A. Tilt-Correction Method for Linear Acceleration of a Single Recording
Appendix B. Mean Reliability of Each Sway Measure
References
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Sex | Age | Weight (kg) | Height (m) | BMI (kg/cm2) | Nasion to Inion (cm) | Preauricular Point to Preauricular Point (cm) | Head Circumference (cm) | |
---|---|---|---|---|---|---|---|---|
1 | F | 23 | 48 | 1.60 | 18.75 | 39.0 | 37 | 56.0 |
2 | F | 30 | 61 | 1.55 | 25.39 | 35.0 | 34 | 55.0 |
3 | F | 24 | 50 | 1.58 | 20.03 | 39.0 | 36 | 57.0 |
4 | M | 27 | 96 | 1.88 | 27.16 | 42.0 | 36 | 60.0 |
5 | F | 20 | 50 | 1.64 | 18.59 | 37.0 | 34 | 52.5 |
6 | M | 21 | 64 | 1.63 | 24.09 | 37.0 | 33 | 55.0 |
7 | M | 24 | 77 | 1.83 | 22.99 | 38.0 | 38 | 58.5 |
8 | F | 21 | 58 | 1.78 | 18.31 | 37.5 | 32 | 56.0 |
9 | F | 26 | 58 | 1.63 | 21.83 | 35.0 | 34 | 52.5 |
10 | M | 25 | 90 | 1.88 | 25.46 | 36.0 | 32 | 57.0 |
Metric | Description | Directions | Units |
---|---|---|---|
RMS | Sway magnitude | ML, AP, Transverse Plane | |
P2P | Range | ML, AP | |
Ellipse Area | Direction change | Transverse Plane | |
Jerk | Smoothness of motion | Resultant Jerk from ML, AP and V data |
Metric | ICC | Lower Bound | Upper Bound | F | df1 | df2 | p | Classification |
---|---|---|---|---|---|---|---|---|
Ellipse Area | 0.78 | 0.52 | 0.92 | 4.44 | 8 | 48 | >0.001 | Good |
Anteroposterior Root Mean Square Acceleration | 0.76 | 0.48 | 0.92 | 4.10 | 8 | 48 | 0.001 | Good |
Total Root Mean Square Acceleration | 0.84 | 0.66 | 0.95 | 6.28 | 8 | 48 | >0.001 | Good |
Mediolateral Root Mean Square Acceleration | 0.79 | 0.55 | 0.93 | 4.71 | 8 | 48 | >0.001 | Good |
Anteroposterior Peak-to-Peak | 0.67 | 0.30 | 0.89 | 3.05 | 8 | 48 | 0.007 | Moderate |
Mediolateral Peak-to-Peak | 0.65 | 0.24 | 0.88 | 2.83 | 8 | 48 | 0.012 | Moderate |
Jerk | 0.95 | 0.90 | 0.98 | 21.19 | 8 | 48 | >0.001 | Excellent |
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Lapointe, A.P.; Ritchie, J.N.; Vitali, R.V.; Burma, J.S.; Soroush, A.; Oni, I.; Dunn, J.F. Internal Consistency of Sway Measures via Embedded Head-Mounted Accelerometers: Implications for Neuromotor Investigations. Sensors 2021, 21, 4492. https://doi.org/10.3390/s21134492
Lapointe AP, Ritchie JN, Vitali RV, Burma JS, Soroush A, Oni I, Dunn JF. Internal Consistency of Sway Measures via Embedded Head-Mounted Accelerometers: Implications for Neuromotor Investigations. Sensors. 2021; 21(13):4492. https://doi.org/10.3390/s21134492
Chicago/Turabian StyleLapointe, Andrew P., Jessica N. Ritchie, Rachel V. Vitali, Joel S. Burma, Ateyeh Soroush, Ibukunoluwa Oni, and Jeff F. Dunn. 2021. "Internal Consistency of Sway Measures via Embedded Head-Mounted Accelerometers: Implications for Neuromotor Investigations" Sensors 21, no. 13: 4492. https://doi.org/10.3390/s21134492