Rapid vasodilation within contracted skeletal muscle in humans: new insight from concurrent use of diffuse correlation spectroscopy and Doppler ultrasound
Masashi Ichinose, Mikie Nakabayashi, Yumie Ono
Abstract
Through the concurrent use of diffuse correlation spectroscopy and Doppler ultrasound, we provide the first evidence in humans that a single brief muscle contraction evokes rapid, intensity-dependent hyperemia within the contracted skeletal muscle microvasculature and the upstream conduit artery. We also show that the magnitude and time course of the contraction-induced rapid hyperemia and vasodilatory responses within skeletal muscle microvessels significantly differ from those in the conduit artery.
Topics & Concepts
VasodilationSkeletal muscleReactive hyperemiaUltrasoundCardiologyMedicineContraction (grammar)Internal medicineDoppler effectMuscle contractionAnatomyRadiologyPhysicsAstronomyThermoregulation and physiological responsesOptical Imaging and Spectroscopy TechniquesNon-Invasive Vital Sign Monitoring