A submaximal test for dogs: evaluation of effects of training, detraining, and cage confinement.
A submaximal test for dogs: evaluation of effects of training, detraining, and cage confinement.
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对狗的次最大测试:评估训练、解除训练和笼子限制的效果。
DOI:
10.1152/jappl.1974.37.2.271
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发表时间:
1974
影响因子:
3.3
通讯作者:
H. Erickson
中科院分区:
文献类型:
--
作者:
C. Tipton;R. Carey;W. Eastin;H. Erickson
TIPTON, CHARLES M., RITA A. CAREYJVILLIAM C. EASTIN, AND HOWARD H. ERICKSON. A submaximal test for dogs: evaluation of fffects of training, detraining, and cage confinement. J. Appl. Physiol. 37 (2): 271-275. 1974.--A submaximal, multistaged treadmill test for dogs was characterized and used to evaluate the functional capabilities of nontrained, trained, detrained, and cage-confined groups. The test lasted 21 min and consisted of seven progressive stages of 3 min each that started at 4.8 km. hl on a 0 y0 grade and ended at 6.4 km. hr on a 20 ‘: G incline. Significant increases occurred in heart rate, mean blood pressure, coronary blood flow, and rectal temperature after the third stage of the test. Pre-and post-test blood samples were obtained and hemoglobin, hematocrit, pyruvic acid, lactic acid, and free fatty acids levels increased, whereas glucose concentrations decreased. Group differences were also evaluated by the increase in resting heart rate after an intravenous injection of atropine sulfate (200 pg* kg-‘). The treadmill and atropine tests differentiated nontrained and trained groups (O-10 wk) and detrained(4-5 wk) from trained groups. No significant differences were found between the nontrained, detrained, ancl cage-confined(8 wk) groups. From these findings we have concluded that the two tests can be used to evaluate training and detraining influences and that the effects of caging were not as deleterious as expected. blood and exercise; blood pressure and exercise; atropine test for clogs; heart rates and training; lactic acid and exercise; coronary blood flowIN RIXENT YEARS exercise has been advocated for preventive, diagnostic, and or rehabilitative purposes to minimize the many problems associated with coronary heart disease. Despite the fact that dogs have been extensively employed in studies designed to elucidate the effects of exercise, there are few universally used or standardized tests for this purpose. Schilling and his associates (16) employed a graded exercise test with four dogs to investigate the influence of altitude but did not evaluate the variability of their test procedure. Young et al.(20) a so utilized a similar test in their 1 metabolic study with six well-conditioned dogs but no attempts were made to define the physiological capacity of dogs with different functional status. Khouri, Gregg, and Rayford(12) studied the effects of treadmill exercise on coronary blood flow in five dogs by maintaining the grade constant(11”) and by increasing the speed from 4 to 16 km. h-! Donald and Ferguson(6) used eight dogs in an exercise study designed to evaluate the relationship between heart rate, oxygen consumption, and arterial blood pressure. In their investigation, speed was kept constant(5.5 km. hl) while the grade was varied from 0 to 28O. It is unknown whether their test was ever used to classify dogs with different fitness levels. To evaluate the effects of training, detraining, and cage confinement on dogs, we undertook the task of standardizing and charac-