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Superior cardiometabolic and cellular adaptive responses to multiple versus single daily sessions of high-intensity interval training in Wistar rats by Bruno Ferreira Mendes; Liliane Vanessa Costa-Pereira; Júllia Alves de Andrade; Caíque Olegário Diniz Magalhães; Ramona Ramalho Souza de Pereira; Elizabethe Adriana Esteves; Ricardo Cardoso Cassilhas; Eric Francelino Andrade; Fernando Gripp; Flávio Castro de Magalhães; Kinulpe Honorato Sampaio; Fabiano Trigueiro Amorim; Marco Fabrício Dias-Peixoto is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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## Abstract This study aimed to compare in rats the cardiometabolic and cellular adaptative responses to 8 weeks of high-intensity interval training (HIIT) performed in a single (1xHIIT) or three shorter daily sessions (3xHIIT). Male Wistar rats were assigned to untrained (n = 10), 1xHIIT (n = 10), and 3xHIIT (n = 10) groups. Both HIIT groups performed 15 min of a treadmill run five times per week for 8 weeks. The 1xHIIT performed single daily sessions of 15 min, and the 3xHIIT performed three daily sessions of 5 min with an interval of 4 h between sessions. Resting VO~2~ and VO~2~max were measured using a metabolic chamber; blood pressure and heart rate were measured by plethysmography; body composition was estimated by DEXA; Glucose and insulin tolerance tests were performed; after euthanasia, hearts, gastrocnemius, and visceral fat were harvested for analysis of cardiac function, histology, and morphology. Mitochondrial densities of the gastrocnemius and left ventricle muscles were determined by electron microscopy. 3xHIIT induced similar positive adaptative responses to 1xHIIT on resting VO~2~ and VO~2~max, cardiac function, and mitochondria density. 3xHIIT was superior to 1xHI

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Author

Bruno Ferreira Mendes; Liliane Vanessa Costa-Pereira; Júllia Alves de Andrade; Caíque Olegário Diniz Magalhães; Ramona Ramalho Souza de Pereira; Elizabethe Adriana Esteves; Ricardo Cardoso Cassilhas; Eric Francelino Andrade; Fernando Gripp; Flávio Castro de Magalhães; Kinulpe Honorato Sampaio; Fabiano Trigueiro Amorim; Marco Fabrício Dias-Peixoto

Publisher

Springer Science and Business Media LLC

Published

2022

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)