Physiologic Tests to Differentiate Dogs with Different Functional Capabilities.
Final rept. 15 Mar 70-1 Mar 73,
IOWA UNIV IOWA CITY DEPT OF PHYSIOLOGY AND BIOPHYSICS
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The study was undertaken to develop and evaluate physiologic tests that could be used to differentiate dogs assigned to various experimental groups. More than 75 different animals weighing 8-26 kg were used most were males. To physically stress the animal, a 21-min, 7-stage, submaximal treadmill test was developed, standardized, and used. The test started at 4.8 kmhr at 0 grade and terminated at 6.4 kmhr on a 20 grade. Dogs were assigned to four groups with different energy requirements trained, nontrained, trained-detrained, or nontrained confined to smaller cages. Measurements associated with exercise heart rates, postexercise lactic acid levels, changes in heart rate after atropine and propranolol injections, increases in blood pressures after norepinephrine injections, the size of fat cells, and muscle cytochrome oxidase activity could effectively differentiate nontrained and trained dogs. Modified author abstract
- Stress Physiology