IV injection of buprenorphine caused a dose-dependent increase in SLA, but only the dose of 10 microg/kg induced analgesia on the basis of results for the experimental method used.
SummaryReasons for performing study: This study was designed to consider the complexity of the physical effort inherent to horses in polo competitions and the absence of reports in the literature on the effort, intensity and electrolyte changes resulting from a collective team training session aimed at preparing for a polo championship. Objectives: To determine the effort and ion changes caused by an outdoor polo training match for a 25 goal handicap (elite) based on physiological variables including acid-base status (venous pH, PCO2 and HCO3 -), packed cell volume (PCV), haemoglobin (Hb), lactate, glucose, sodium, chloride and potassium and strong ion difference (SID) as well as creatine kinase (CK) activity. Methods: Twenty-three clinically healthy 'high-goal' polo ponies were used, which included 10 geldings and 13 females. The horses performed a training match, as a preparation for a 25 goal tournament, consisting of 6 chukkas of 7 min duration each. Blood samples were collected during resting, and at 5 min, 6 and 12 h after each chukka. Data were analysed using ANOVA for repeated measures followed by Tukey's test. Results: Differences (P<0.001) were evident mainly in post exercise for all variables studied. There was a reduction in pH, PCO2 and HCO3 -and SID, together with an increase in PCV and Hb, lactate, glucose, Na + and Cl -. K + levels remained constant at all times of collection. The average resting value for CK was 255 Ϯ 9 iu/l, and 6 h after effort there was a 35% increase in enzyme activity. Conclusions: This study indicates that the horses participating in a training match underwent a high-intensity effort with alterations in electrolytes and acid-base equilibrium. Potential relevance: Training matches should be carefully conducted, with a suitable recovery period before the main match. evj_278 191..195
OBJECTIVE To determine whether the lactate threshold of dogs could be determined by a visual method and to assess the extent of agreement and bias among treadmill velocities for the lactate threshold as determined by visual (LTv) and polynomial (LTp) methods, glucose threshold as determined by visual (GTv) and polynomial (GTp) methods, and heart rate deflection point (HRdp) as a method for estimating the aerobic capacity of dogs.
ANIMALS 18 healthy adult Beagles.
PROCEDURES Each dog underwent a standardized incremental treadmill exercise test once. The test ended when the dog began to show signs of fatigue. Plasma lactate and glucose concentrations and heart rate (HR) were plotted against exercise intensity (treadmill velocity) for the duration of the test, and the LTv, GTv, and HRdp were determined visually. The LTp and GTp were determined by means of a second-order polynomial function. One-way ANOVA, Pearson correlation, Bland-Altman analyses, and ordinary least products regression were used to assess the extent of agreement and bias among the various threshold velocities.
RESULTS Mean velocity did not differ significantly among the thresholds evaluated. There was a strong positive correlation between the LTv velocity and the velocity for GTv (r = 0.91), LTp (r = 0.96), GTp (r = 0.94), and HRdp (r = 0.95).
CONCLUSIONS AND CLINICAL RELEVANCE Results indicated that LTv could be determined for dogs undergoing intense exercise on a treadmill, and the treadmill velocity corresponding to the LTv was associated with the velocity for the other hallmarks of endurance. Thus, that method may be useful for prescription and evaluation of conditioning programs for dogs.
Faculdade de Ciências Agrárias e Veterinárias -UNESP Via de acesso Prof. Paulo Donato Castellane s/n 14884-900 -Jaboticabal, SP
RESUMOEstudou-se a resposta do cortisol e da glicemia em 12 equinos da raça Puro Sangue Árabe destreinados (T 0 ) por oito meses e submetidos a um período de 90 dias de treinamento aeróbio (T 90
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.