## Abstract

Walking speed varies between over-ground trials and a speed-independent gait-parameter does not exist for use in horses.

We introduce relative (R) lateral (L) and diagonal (D) coupling intervals (CI) and hypothesize that both are independent of walking speed.

Four horses were walked over 8 Kistler force plates surrounded by a 12-camera Qualisys infrared kinematic system. Kinetic and kinematic data were collected synchronously at a sample rate of 200 Hz.

Hoof-on was detected from kinetic data with a threshold of 10N.

LCI is defined as the time from front hoof-on to the ipsilateral hind hoof-on and DCI as front hoof-on to the contralateral hind hoof-on in the next stride. RLCI and RDCI are proportional changes in LCI and DCI between subsequent strides.

Statistical analysis was performed using R and a linear mixed model with repeated measurements.

No significant effect of speed was identified for either RLCI or RDCI. RLCI and RDCI can thus be applied as speed-independent stride-to-stride variability parameters in horses during walk over-ground. This might prove useful for detection of gait deficits caused by spinal cord injury.

We introduce relative (R) lateral (L) and diagonal (D) coupling intervals (CI) and hypothesize that both are independent of walking speed.

Four horses were walked over 8 Kistler force plates surrounded by a 12-camera Qualisys infrared kinematic system. Kinetic and kinematic data were collected synchronously at a sample rate of 200 Hz.

Hoof-on was detected from kinetic data with a threshold of 10N.

LCI is defined as the time from front hoof-on to the ipsilateral hind hoof-on and DCI as front hoof-on to the contralateral hind hoof-on in the next stride. RLCI and RDCI are proportional changes in LCI and DCI between subsequent strides.

Statistical analysis was performed using R and a linear mixed model with repeated measurements.

No significant effect of speed was identified for either RLCI or RDCI. RLCI and RDCI can thus be applied as speed-independent stride-to-stride variability parameters in horses during walk over-ground. This might prove useful for detection of gait deficits caused by spinal cord injury.

Originalsprog | Engelsk |
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Publikationsdato | 2011 |

Antal sider | 2 |

Status | Udgivet - 2011 |

Begivenhed | ISB2011: Congress - Varighed: 1 aug. 2011 → … Konferencens nummer: 23 |

### Konference

Konference | ISB2011 |
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Nummer | 23 |

Periode | 01/08/2011 → … |

## Emneord

- Hestesygdomme
- Biomechanics
- Locomotion
- Temporal gait characteristics
- Horse