Accuracy and precision of equine gait event detection during walking with limb and trunk mounted inertial sensors

Research output: Contribution to journalJournal articlepeer-review

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Accuracy and precision of equine gait event detection during walking with limb and trunk mounted inertial sensors. / Olsen, Emil; Andersen, Pia Haubro; Pfau, Thilo.

In: Sensors, Vol. 12, No. 6, 2012, p. 8145-8156.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Olsen, E, Andersen, PH & Pfau, T 2012, 'Accuracy and precision of equine gait event detection during walking with limb and trunk mounted inertial sensors', Sensors, vol. 12, no. 6, pp. 8145-8156. https://doi.org/10.3390/s120608145

APA

Olsen, E., Andersen, P. H., & Pfau, T. (2012). Accuracy and precision of equine gait event detection during walking with limb and trunk mounted inertial sensors. Sensors, 12(6), 8145-8156. https://doi.org/10.3390/s120608145

Vancouver

Olsen E, Andersen PH, Pfau T. Accuracy and precision of equine gait event detection during walking with limb and trunk mounted inertial sensors. Sensors. 2012;12(6):8145-8156. https://doi.org/10.3390/s120608145

Author

Olsen, Emil ; Andersen, Pia Haubro ; Pfau, Thilo. / Accuracy and precision of equine gait event detection during walking with limb and trunk mounted inertial sensors. In: Sensors. 2012 ; Vol. 12, No. 6. pp. 8145-8156.

Bibtex

@article{8999a1091f8b4eb0a12f071bfef657ba,
title = "Accuracy and precision of equine gait event detection during walking with limb and trunk mounted inertial sensors",
abstract = "The increased variations of temporal gait events when pathology is present are good candidate features for objective diagnostic tests. We hypothesised that the gait events hoof-on/off and stance can be detected accurately and precisely using features from trunk and distal limb-mounted Inertial Measurement Units (IMUs). Four IMUs were mounted on the distal limb and five IMUs were attached to the skin over the dorsal spinous processes at the withers, fourth lumbar vertebrae and sacrum as well as left and right tuber coxae. IMU data were synchronised to a force plate array and a motion capture system. Accuracy (bias) and precision (SD of bias) was calculated to compare force plate and IMU timings for gait events. Data were collected from seven horses. One hundred and twenty three (123) front limb steps were analysed; hoof-on was detected with a bias (SD) of -7 (23) ms, hoof-off with 0.7 (37) ms and front limb stance with -0.02 (37) ms. A total of 119 hind limb steps were analysed; hoof-on was found with a bias (SD) of -4 (25) ms, hoof-off with 6 (21) ms and hind limb stance with 0.2 (28) ms. IMUs mounted on the distal limbs and sacrum can detect gait events accurately and precisely.",
keywords = "Faculty of Health and Medical Sciences, Bev{\ae}gelse, Inertial Measurement Unit",
author = "Emil Olsen and Andersen, {Pia Haubro} and Thilo Pfau",
year = "2012",
doi = "10.3390/s120608145",
language = "English",
volume = "12",
pages = "8145--8156",
journal = "Sensors",
issn = "1424-3210",
publisher = "M D P I AG",
number = "6",

}

RIS

TY - JOUR

T1 - Accuracy and precision of equine gait event detection during walking with limb and trunk mounted inertial sensors

AU - Olsen, Emil

AU - Andersen, Pia Haubro

AU - Pfau, Thilo

PY - 2012

Y1 - 2012

N2 - The increased variations of temporal gait events when pathology is present are good candidate features for objective diagnostic tests. We hypothesised that the gait events hoof-on/off and stance can be detected accurately and precisely using features from trunk and distal limb-mounted Inertial Measurement Units (IMUs). Four IMUs were mounted on the distal limb and five IMUs were attached to the skin over the dorsal spinous processes at the withers, fourth lumbar vertebrae and sacrum as well as left and right tuber coxae. IMU data were synchronised to a force plate array and a motion capture system. Accuracy (bias) and precision (SD of bias) was calculated to compare force plate and IMU timings for gait events. Data were collected from seven horses. One hundred and twenty three (123) front limb steps were analysed; hoof-on was detected with a bias (SD) of -7 (23) ms, hoof-off with 0.7 (37) ms and front limb stance with -0.02 (37) ms. A total of 119 hind limb steps were analysed; hoof-on was found with a bias (SD) of -4 (25) ms, hoof-off with 6 (21) ms and hind limb stance with 0.2 (28) ms. IMUs mounted on the distal limbs and sacrum can detect gait events accurately and precisely.

AB - The increased variations of temporal gait events when pathology is present are good candidate features for objective diagnostic tests. We hypothesised that the gait events hoof-on/off and stance can be detected accurately and precisely using features from trunk and distal limb-mounted Inertial Measurement Units (IMUs). Four IMUs were mounted on the distal limb and five IMUs were attached to the skin over the dorsal spinous processes at the withers, fourth lumbar vertebrae and sacrum as well as left and right tuber coxae. IMU data were synchronised to a force plate array and a motion capture system. Accuracy (bias) and precision (SD of bias) was calculated to compare force plate and IMU timings for gait events. Data were collected from seven horses. One hundred and twenty three (123) front limb steps were analysed; hoof-on was detected with a bias (SD) of -7 (23) ms, hoof-off with 0.7 (37) ms and front limb stance with -0.02 (37) ms. A total of 119 hind limb steps were analysed; hoof-on was found with a bias (SD) of -4 (25) ms, hoof-off with 6 (21) ms and hind limb stance with 0.2 (28) ms. IMUs mounted on the distal limbs and sacrum can detect gait events accurately and precisely.

KW - Faculty of Health and Medical Sciences

KW - Bevægelse

KW - Inertial Measurement Unit

U2 - 10.3390/s120608145

DO - 10.3390/s120608145

M3 - Journal article

C2 - 22969392

VL - 12

SP - 8145

EP - 8156

JO - Sensors

JF - Sensors

SN - 1424-3210

IS - 6

ER -

ID: 38260603