Tools
Tools
Skervin, T.K. 
ORCID: 0000-0001-6746-7420, Thomas, N.M., Schofield, A.J., Hollands, M.A., Maganaris, C.N., O’Brien, T.D., Baltzopoulos, V. and Foster, R.J.,
2023.
Accuracy and precision of a novel photogate system to measure toe clearance on stairs.
Sensors, 23 (5): 2429.
Abstract
Background: Toe clearance on stairs is typically measured using optoelectronic systems, though these are often constrained to the laboratory, due to their complex setups. Here we measured stair toe clearance through a novel prototype photogate setup and compared this to optoelectronic measurements.
Methods: Twelve participants (age 22 ± 3 years) completed 25 stair ascent trials, each on a seven-step staircase. Toe clearance over the fifth step edge was measured using Vicon and the photogates. Twenty-two photogates were created in rows through laser diodes and phototransistors. The height of the lowest photogate broken at step-edge crossing was used to determine photogate toe clearance. A limits of agreement analysis and Pearson’s correlation coefficient compared the accuracy, precision and relationship between systems.
Results: We found a mean difference of −1.5 mm (accuracy) between the two measurement systems, with upper and lower limits (precision) of 10.7 mm and −13.8 mm, respectively. A strong positive correlation was also found (r = 70, n = 12, p = 0.009) between the systems.
Discussion: The results suggest that photogates could be an option for measuring real-world stair toe clearances, where optoelectronic systems are not routinely used. Improvements to the design and measurement factors may help to improve the precision of the photogates.
| Item Type: | Journal article | ||||||
|---|---|---|---|---|---|---|---|
| Publication Title: | Sensors | ||||||
| Creators: | Skervin, T.K., Thomas, N.M., Schofield, A.J., Hollands, M.A., Maganaris, C.N., O’Brien, T.D., Baltzopoulos, V. and Foster, R.J. | ||||||
| Publisher: | MDPI AG | ||||||
| Date: | 2023 | ||||||
| Volume: | 23 | ||||||
| Number: | 5 | ||||||
| Identifiers: |
|
||||||
| Rights: | Copyright: © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). | ||||||
| Divisions: | Schools > School of Science and Technology | ||||||
| Record created by: | Linda Sullivan | ||||||
| Date Added: | 19 Oct 2023 10:58 | ||||||
| Last Modified: | 19 Oct 2023 10:58 | ||||||
| URI: | https://irep.ntu.ac.uk/id/eprint/50025 |
Actions (login required)
 |
Edit View |
Views
Views per month over past year
Downloads
Downloads per month over past year
