Key result
Motor unit recruitment facilitated functional vasodilatation in response to rhythmic contractions, demonstrating that responses depend on both total tension and the number of active motor units.
Population
Hamster retractor muscle
Comparison
Motor unit recruitment controlled by voltage… vs Different levels of recruitment, duty cycle, and…
Design
Preclinical
Authors
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Refines models of exercise hyperemia; leaves open translation to patients with cardiovascular disease.
Functional vasodilatation in response to rhythmic contractions is determined not only by the total tension produced but also by the number of active motor units.
Jurgen et al. (2000) studied this question. Motor unit recruitment vs. Different levels of recruitment and duty cycles was evaluated on Vasodilatory responses (diameter times time integral, DTI). Motor unit recruitment facilitated functional vasodilatation in response to rhythmic contractions, demonstrating that responses depend on both total tension and the number of active motor units.
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