Abstract
Near-infrared spectroscopy (NIRS) shows two types of tissue blood volume (BV) parameters: the total hemoglobin concentration (cHb; assessed by continuous-wave NIRS) and the normalized tissue hemoglobin index (nTHI; evaluated by spatially resolved NIRS). This study was performed to investigate the differences between cHb and nTHI, estimated by calibration using acute reduction of BV at the onset of exercise. Seven active male volunteers (age: 22 ± 4 years) performed a prolonged (60-min) cycling exercise test at 65% or 70% of the peak oxygen uptake. During the tests, cHb and nTHI from the vastus lateralis muscle were monitored. The two parameters were expressed relative to the resting value of 100% and the minimum value of 0% at the onset of exercise. The value of cHb started to increase after arriving at the minimum value and continued until the end of exercise. Similar to cHb, nTHI increased acutely from the lowest level, but the parameter remained almost unchanged from ~5 min throughout the test. Therefore, the two parameters interacted significantly. Moreover, in comparison with the same exercise duration, cHb was significantly higher than nTHI from the 28th min to the end of the test. These results suggest that cHb and nTHI in working muscle are not synchronized during prolonged exercise, especially after ~30 min. The differences between the two BV parameters are likely partly attributable to other factors, such as the increase in skin blood flow.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Osawa T, Kime R, Hamaoka T et al (2011) Attenuation of muscle deoxygenation precedes EMG threshold in normoxia and hypoxia. Med Sci Sports Exerc 43:1406–1413
Robbins D, Elwell C, Jimenez A et al (2012) Localised muscle tissue oxygenation during dynamic exercise with whole body vibration. J Sports Sci Med 11:346–351
Osawa T, Arimitsu T, Takahashi H (2016) Do two tissue blood volume parameters measured by different near-infrared spectroscopy methods show the same dynamics during incremental running? Adv Exp Med Biol 876:27–33
Hamaoka T, McCully KK, Quaresima V et al (2007) Near-infrared spectroscopy/imaging for monitoring muscle oxygenation and oxidative metabolism in healthy and diseased humans. J Biomed Opt 12:062105
Grassi B, Quaresima V (2016) Near-infrared spectroscopy and skeletal muscle oxidative function in vivo in health and disease: a review from an exercise physiology perspective. J Biomed Opt 21:091313
Charkoudian N (2010) Mechanisms and modifiers of reflex induced cutaneous vasodilation and vasoconstriction in humans. J Appl Physiol 109:1221–1228
Davis SL, Fadel PJ, Cui J et al (2006) Skin blood flow influences near-infrared spectroscopy-derived measurements of tissue oxygenation during heat stress. J Appl Physiol 100:221–224
Tew GA, Ruddock AD, Saxton JM (2010) Skin blood flow differentially affects near-infrared spectroscopy-derived measures of muscle oxygen saturation and blood volume at rest and during dynamic leg exercise. Eur J Appl Physiol 110:1083–1089
Mense S, Stahnke M (1983) Responses in muscle afferent fibres of slow conduction velocity to contractions and ischaemia in the cat. J Physiol 342:383–397
Yamazaki F (2002) Vasomotor responses in glabrous and nonglabrous skin during sinusoidal exercise. Med Sci Sports Exerc 34:767–772
Yanagimoto S, Kuwahara T, Zhang Y et al (2003) Intensity-dependent thermoregulatory responses at the onset of dynamic exercise in mildly heated humans. Am J Physiol Regul Integr Comp Physiol 285:R200–R207
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 Springer International Publishing AG
About this chapter
Cite this chapter
Osawa, T., Shiose, K., Takahashi, H. (2017). Tissue Blood Volume Parameters Measured by Continuous-Wave and Spatially Resolved NIRS Show Different Changes During Prolonged Cycling Exercise. In: Halpern, H., LaManna, J., Harrison, D., Epel, B. (eds) Oxygen Transport to Tissue XXXIX. Advances in Experimental Medicine and Biology, vol 977. Springer, Cham. https://doi.org/10.1007/978-3-319-55231-6_34
Download citation
DOI: https://doi.org/10.1007/978-3-319-55231-6_34
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-55229-3
Online ISBN: 978-3-319-55231-6
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)