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Proceedings Paper

Oxygenation of the calf muscle during an incremental, intermittent walking exercise assessed by NIRS
Author(s): S. Härtel; C. Kutzner; D. Schneider; S. Grieger; M. Neumaier; M. Kohl-Bareis
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Paper Abstract

We use near infrared spectroscopy (NIRS) for the non-invasive assessment of calf oxygenation during a new walking protocol in healthy subjects of different fitness levels. The protocol increases the exercise power by an increase of the skew rather than speed, and the incremental power steps are intermitted by a 30 s rest which serves for blood sampling. The NIRS measurement parameter of tissue oxygenation are discussed, and a high correlation of the oxygen saturation (tissue oxygenation index) difference between exercise and rest period with exercise power is observed. This difference parameter can be interpreted as strongly linked to blood flow rather than oxygenation. This finding is supported by comparison with spirometry data. The effect of training is discussed. The exercise protocol is suited for testing unfit, or older subjects and the data discussed here servers as a test for a larger trial with heart clinic patients.

Paper Details

Date Published: 14 June 2011
PDF: 6 pages
Proc. SPIE 8088, Diffuse Optical Imaging III, 80881G (14 June 2011); doi: 10.1117/12.889768
Show Author Affiliations
S. Härtel, Karlsruher Institute of Technology (Germany)
C. Kutzner, Karlsruher Institute of Technology (Germany)
D. Schneider, Univ. of Applied Sciences Koblenz (Germany)
S. Grieger, Univ. of Applied Sciences Koblenz (Germany)
M. Neumaier, Karlsruher Institute of Technology (Germany)
M. Kohl-Bareis, Univ. of Applied Sciences Koblenz (Germany)

Published in SPIE Proceedings Vol. 8088:
Diffuse Optical Imaging III
Andreas H. Hielscher; Paola Taroni, Editor(s)

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