Force platform analysis in clinically healthy Rottweilers: comparison with Labrador Retrievers

Area of Science:

• Canine biomechanics
• Comparative orthopedics

Background:

• Force platform analysis is crucial for understanding canine locomotion.
• Previous studies have focused on specific breeds, necessitating comparative data.

Purpose of the Study:

• To quantify ground reaction forces in Rottweilers during trotting.
• To compare these forces with those of Labrador Retrievers.
• To investigate the influence of body weight and conformation on these measurements.

Main Methods:

• Prospective clinical study involving 9 Rottweilers and 12 Labrador Retrievers.
• Dogs trotted over a force platform at controlled speed and acceleration.
• Analysis of peak vertical and craniocaudal forces, impulses, stance time, and slopes, normalized to body weight.

Main Results:

• Rottweilers exhibited significantly lower peak vertical forces and smaller rising/falling slopes but higher vertical impulses in thoracic and pelvic limbs compared to Labradors.
• Rottweilers were significantly heavier with larger anatomic measurements.
• Analysis of covariance (ANCOVA) revealed no significant inter-breed differences after adjusting for velocity, limb length, and body weight.

Conclusions:

• Standard normalization methods reveal significant differences in ground reaction forces between Rottweilers and Labradors.
• These differences are primarily attributable to variations in conformation and body weight.
• Conformation and body weight significantly influence force platform data, potentially introducing bias in comparative studies.