Abstract
Thirteen healthy Labrador retrievers underwent a 5-stage incremental treadmill exercise test to assess its reliability. Blood lactate (BL), heart rate (HR), and body temperature (BT) were measured at rest, after each stage of exercise, and after a 20-min recovery. Reproducibility was assessed by repeating the test after 7 days. Two-way MANOVAs revealed significant differences between consecutive stages, and between values at rest and after recovery. There was also a significant reduction in physiological strain between the first and second trial (learning effect). Test reliability expressed as typical error (BL = 0.22 mmol/l, HR = 9.81 bpm, BT = 0.22°C), coefficient of variation (BL = 19.3%, HR = 7.9% and BT = 0.6%) and test–retest correlation (BL = 0.89, HR = 0.96, BT = 0.95) was good. Results support test reproducibility although the learning effect needs to be controlled when investigating the exercise-related problems commonly observed in this breed.
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Notes
Study protocol 0705A07843, approved on June 20 2007.
L8 Rehabilitation Treadmill, Landice Inc., Randolph, New Jersey USA.
Web Master™, Ruff Wear Inc., Bend, Oregon, USA.
Bark'n Boots™ Grip Trex™, Ruff Wear Inc., Bend, Oregon, USA.
Lactate Scout, Senslab, Leipzig, Germany.
Sapphire ECG, Vetronic, Newton Abbot, UK.
Blue sensor, M-00-S, Medicotest, Ølstykke, Denmark.
Mabis Healthcare, Waukegan, Illinois, USA.
SPSS 16.0 Software, Chicago, Illinois, USA.
Microsoft Office Excel XP 2003, Microsoft Corporation, US.
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Acknowledgments
We would like to thank all the owners of the dogs involved in this study for their precious support and encouragement. A special thank you to Heidi Cooper, Jaime Shriver and Christopher McKinney for their invaluable technical assistance. Some of the results of the present study have been presented at the ECVIM-CA annual congress, Ghent, Belgium, 4–8 September 2008. This study was supported by the Department of Clinical Veterinary Sciences, University of Minnesota, USA.
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Communicated by G. Heldmaier.
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Ferasin, L., Marcora, S. Reliability of an incremental exercise test to evaluate acute blood lactate, heart rate and body temperature responses in Labrador retrievers. J Comp Physiol B 179, 839–845 (2009). https://doi.org/10.1007/s00360-009-0367-z
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DOI: https://doi.org/10.1007/s00360-009-0367-z