PSXI-29 - Comparison of temporal-spatial and pressure gait analysis between resting and exercised Labrador retrievers
Thursday, July 23, 2020
7:00 AM – 5:00 PM
Location: Poster Sessions
Exercise-induced muscle damage and subsequent inflammation and soreness are frequently studied topics in both human and animal trials. Gait analysis using a commercial mat system is a newer technology that identifies the temporal and spatial qualities of a subject’s gait. Gait analysis in healthy canines, especially in an exercise model, has been infrequently studied. Our objectives were to compare gait analysis metrics between exercised and non-exercised dogs, to identify which parameters were most impacted by running exercise, and to identify the ideal time to perform gait analysis post-exercise. Twenty-four Labrador retrievers were used in this trial, with 12 untrained dogs performing one 5km run, and 12 untrained dogs providing a resting comparison. All dogs were gaited using a Gait4Dogs (CIR Systems, Inc) pressure walkway system at baseline, 30min post-run, 3h post-run, and 24h post-run. For pressure measurements, no significant differences were found in resting dogs. In exercised dogs, number of activated sensors was significantly lower 30min post-run compared to baseline (p=0.05). Pressure time was significantly faster 30min post-run compared to 3h post-run (p=0.007), indicating discomfort during the walk. For spatial measurements, no significant differences were found in resting dogs. In exercised dogs, swing% was significantly lower in front limbs at 30min post-run compared to baseline (p=0.001) and in hindlimbs at 30min post-run compared to 3h post-run and 24h post-run (p=0.001), indicating reduced flexion. Stance% was significantly higher in front limbs at 30min post-run compared to all other timepoints (p=0.001) and in hindlimbs at 30min post-run compared to 3h post-run and 24h post-run (p=0.001). Stance time and step time were significantly lower at 3h post-run compared to 30min post-run and 24h post-run (p=0.001;p=0.006), indicating discomfort during the walk. In summary, untrained Labrador retrievers had a significantly affected gait primarily thirty minutes and three hours after exercise compared to resting dogs.