RESUMO:A fisiologia do exercício estuda as respostas fisiológicas e bioquímicas do cavalo durante e após o exercício físico. Para que se inicie o exercício e ocorra a contração muscular são necessários combustíveis para a produção de adenosina trifosfato (ATP), sendo indispensável a manutenção deste para reorganização do ciclo, ocorrendo através de processos metabólicos que variam conforme a intensidade e a duração do exercício, podendo ocorrer a síntese de ATP pela via anaeróbica por um substrato imediato como a creatina fosfato (CP) ou pela glicose através da glicólise, ou ainda, ocorre pela via aeróbica através também da glicose envolvendo o ciclo de Krebs, porém alguns destes mecanismos produzem metabólitos que podem resultar na queda da performance. Durante esses processos também ocorrem alterações fisiológicas na tentativa de restabelecer os parâmetros do animal. Sendo assim, este trabalho teve o intuito de realizar uma revisão de todas estas alterações, bem como descrever as necessidades fisiológicas para a realização dos exercícios na espécie equina.Palavras-chave: Equino. Fisiologia. Exercício. SUMMARY:The exercise physiology studies the physiological and biochemical responses of the horse during and after exercise. In order to start the exercise and to occur the muscle contraction it's necessary fuel for the production of adenosine triphosphate (ATP), and it's essential the maintenance of this fuels for reorganization of the cycle, occurring through metabolic processes that vary depending on the intensity and duration of exercise, possible to occur the synthesis of ATP through anaerobic respiration through an immediate substrate such as creatine phosphate (CP) or the glucose through glycolysis, or, occurs with aerobic respiration through the glucose involving the Kreb's Citric Acid Cycle, although those mechanisms produce metabolites that may result in a performance decrease. During these processes also occur physiological changes in an attempt to restore the animal parameters. Thus, this work had the intention of reviewing all these changes, and describes the physiological needs for the conduction of the exercises in equine species.Key words: Equine. Physiology. Exercise
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