Cardiorespiratory reflexes from muscles during dynamic and static exercise in the dog

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Population

Anesthetized dogs

Design

Preclinical

Authors

Discussion

Animal data differentiate reflexes from rhythmic versus tetanic contractions; hypothesis-generating for human exercise physiology.

Population

Anesthetized dogs

Intervention

Muscle contractions elicited by stimulating the femoral and gastrocnemius nerves at 3 and 100 Hz (intensity 2.0-2.5 times motor threshold for 20-s)

Outcome

Cardiorespiratory reflex responses (arterial pressure, heart rate, pulmonary ventilation)surrogate

Dynamic and static muscle work elicit distinct cardiorespiratory reflex mechanisms related to muscular metabolic rate.

Tallarida et al. (1985) studied this question.

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