CONFERENCE PROCEEDINGS
Advanced Search
Home > Journals > J. Biomed. Opt. > Volume 15 > Issue 5 > Article
Open Access
1 September 2010 Noninvasive observation of skeletal muscle contraction using near-infrared time-resolved reflectance and diffusing-wave spectroscopy
Markus Belau, Markus Ninck, Gernot Hering, Lorenzo Spinelli, Davide Contini, Alessandro Torricelli, Thomas Gisler
Author Affiliations +
Journal of Biomedical Optics, Vol. 15, Issue 5, 057007 (September 2010). https://doi.org/10.1117/1.3503398
Abstract
We introduce a method for noninvasively measuring muscle contraction in vivo, based on near-infrared diffusing-wave spectroscopy (DWS). The method exploits the information about time-dependent shear motions within the contracting muscle that are contained in the temporal autocorrelation function g(1) (,t) of the multiply scattered light field measured as a function of lag time, , and time after stimulus, t. The analysis of g(1) (,t) measured on the human M. biceps brachii during repetitive electrical stimulation, using optical properties measured with time-resolved reflectance spectroscopy, shows that the tissue dynamics giving rise to the speckle fluctuations can be described by a combination of diffusion and shearing. The evolution of the tissue Cauchy strain e(t) shows a strong correlation with the force, indicating that a significant part of the shear observed with DWS is due to muscle contraction. The evolution of the DWS decay time shows quantitative differences between the M. biceps brachii and the M. gastrocnemius, suggesting that DWS allows to discriminate contraction of fast- and slow-twitch muscle fibers.
©(2010) Society of Photo-Optical Instrumentation Engineers (SPIE)
Citation Download Citation
Markus Belau, Markus Ninck, Gernot Hering, Lorenzo Spinelli, Davide Contini, Alessandro Torricelli, and Thomas Gisler "Noninvasive observation of skeletal muscle contraction using near-infrared time-resolved reflectance and diffusing-wave spectroscopy," Journal of Biomedical Optics 15(5), 057007 (1 September 2010). https://doi.org/10.1117/1.3503398
Published: 1 September 2010
JOURNAL ARTICLE
 8 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Lens.org Logo
CITATIONS
Cited by 28 scholarly publications.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Optical fibers
Reflectance spectroscopy
Diffusion
Tissue optics
Spectroscopy
Tissues
Optical properties
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top