Effects of muscle fiber motion on diffuse correlation spectroscopy blood flow measurements during exercise

Yu Shang, T. B. Symons, Turgut Durduran, A. G. Yodh, Guoqiang Yu

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

The influence of muscle fiber motion during exercise on diffuse correlation spectroscopy (DCS) measurements of skeletal muscle blood flow is explored. Isotonic (with muscle fiber motion) and isometric (without muscle fiber motion) plantar flexion exercises were performed at 30% of maximal force on a dynamometer, and muscle blood flow was continuously monitored on the medial gastrocnemius (calf) muscle of a healthy volunteer using DCS. During exercise, dynamometer recordings including footplate position, footplate angular velocity, and plantar flexion torque were obtained. Muscle fiber motions introduced artifacts into the DCS signals, causing an overestimation of blood flow changes. We show how proper co- registration of dynamometer recordings and DCS measurements enables separation of the true blood flow responses during exercise from those affected by the motion artifacts.

Original languageEnglish
Pages (from-to)500-511
Number of pages12
JournalBiomedical Optics Express
Volume1
Issue number2
DOIs
StatePublished - Sep 1 2010

ASJC Scopus subject areas

  • Biotechnology
  • Atomic and Molecular Physics, and Optics

Fingerprint

Dive into the research topics of 'Effects of muscle fiber motion on diffuse correlation spectroscopy blood flow measurements during exercise'. Together they form a unique fingerprint.

Cite this