Key result
During voluntary diving in tufted ducks, heart rate was 51% higher than resting but 59 beats/min lower than predicted from the swimming heart rate/oxygen consumption relationship.
Population
6 tufted ducks (Aythya fuligula)
Comparison
Swimming at different velocities and voluntary… vs Resting state
Design
Preclinical
Authors
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Questions applicability of swimming HR-VO2 models to voluntary diving; leaves open refined metabolic estimates integrating submersion-exercise balance in birds.
During voluntary diving in tufted ducks, there is a balance between cardiovascular responses to forced submersion and exercise in air, making the swimming heart rate/oxygen consumption relationship unsuitable for predicting diving oxygen consumption.
Woakes et al. (1983) studied Animal study (Tufted ducks) (n=6). Swimming and diving vs. Resting state was evaluated on Heart rate and oxygen consumption relationship. During voluntary diving in tufted ducks, heart rate was 51% higher than resting but 59 beats/min lower than predicted from the swimming heart rate/oxygen consumption relationship.
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