Conditioning Program Prescribed from the External Training Load Corresponding to the Lactate Threshold Improved Cardiac Function in Healthy Dogs

This research focuses on the adjustments in systolic and diastolic functions that are not fully understood in dogs submitted to athletic training. Beagle dogs carried out an endurance training program (ETP) prescribed from the external training load, corresponding to 70-80% of the lactate threshold...

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Bibliographic Details
Published in:	Animals (Basel) Vol. 12; no. 1; p. 73
Main Authors:	Restan, Alejandro Zamora, Camacho, Aparecido Antonio, Zacché, Evandro, Canola, Raphaela Arantes Marques, Silva, Samara Beretta Gomes, Braz, Jaislane Bastos, Silva-Filho, Jorge Cardoso da, Cerqueira, Juliana Aparecida, Loureiro, Bruna Agy, Funnicelli, Michelli Inacio Gonçalves, Pinheiro, Daniel Guariz, Ferraz, Guilherme Camargo
Format:	Journal Article
Language:	English
Published:	Switzerland MDPI AG 30-12-2021 MDPI
Subjects:	Adaptation Aerobics anaerobic threshold Animal training Aorta Athletes Cardiac function Cardiovascular diseases Congestive heart failure Coronary artery disease Diastole Doppler effect Echocardiography Endurance Evaluation Exercise Fitness equipment Health promotion Heart rate Hypertrophy Laboratories Lactic acid left ventricle Males Maximum oxygen consumption Medical research Physical fitness Physical training Physiological responses Physiology principal component analysis Principal components analysis Qualitative analysis strain Strain rate Treadmills Two dimensional analysis Variables Velocity Ventricle Veterinary medicine Brazil strain heat map left ventricle anaerobic threshold echocardiography exercise principal component analysis
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Summary:	This research focuses on the adjustments in systolic and diastolic functions that are not fully understood in dogs submitted to athletic training. Beagle dogs carried out an endurance training program (ETP) prescribed from the external training load, corresponding to 70-80% of the lactate threshold (VLT) velocity. Eighteen dogs were randomly assigned to two groups: control (C, = 8), active dogs that did not perform any forced exercise, and trained (T, = 10), submitted to the ETP during eight weeks. All dogs were evaluated before and after the ETP period using two-dimensional echocardiography, M-mode, Doppler, and two-dimensional speckle tracking. A principal component analysis (PCA) of the echocardiographic variables was performed. The ETP improved the left ventricular internal dimension at the end of diastole (LVDd), the left ventricular internal dimension at the end of diastole to aorta ratio (LVDd: Ao), and the strain rate indices. PCA was able to capture the dimensionality and qualitative echocardiography changes produced by the ETP. These findings indicated that the training prescribed based on the lactate threshold improved the diastolic and systolic functions. This response may be applied to improve myocardial function, promote health, and mitigate any injuries produced during heart failure.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	2076-2615 2076-2615
DOI:	10.3390/ani12010073