scholarly journals Reproducibility of Near Infrared Spectroscopy (NIRS)‐Derived Peripheral Muscle Oxygenation Measurements at Rest and During Central Hypovolemia

2015 ◽  
Vol 29 (S1) ◽  
Author(s):  
Grace Pham ◽  
Victoria Kay ◽  
Caroline Rickards
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Muscle Oxygenation ◽  
Peripheral Muscle

scholarly journals Underwater near-infrared spectroscopy can measure training adaptations in adolescent swimmers

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4393 ◽  
Author(s):  
Ben Jones ◽  
Dave Parry ◽  
Chris E. Cooper
Keyword(s):  
Infrared Spectroscopy ◽  
Training Program ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Muscle Blood Flow ◽  
Muscle Oxygenation ◽  
Analysis Tool ◽  
Swim Performance ◽  
Performance Time ◽  
Peripheral Muscle

The development of an underwater near-infrared spectroscopy (uNIRS) device has enabled previously unattainable measurements of peripheral muscle hemodynamics and oxygenation to be taken within the natural aquatic environment. The purposes of this study were (i) to trial the use of uNIRS, in a real world training study, and (ii) to monitor the effects of a swim training program upon muscle oxygenation status in short distance swimming. A total of 14 junior club level swimmers completed a repeated swim sprint test before and after an eight week endurance training program. A waterproof, portable Near-Infrared Spectroscopy device was attached to the vastus lateralis. uNIRS successfully measured changes in muscle oxygenation and blood volume in all individuals; rapid sub-second time resolution of the device was able to demonstrate muscle oxygenation changes during the characteristic swim movements. Post training heart rate recovery and swim performance time were significantly improved. uNIRS data also showed significant changes. A larger rise in deoxyhemoglobin during individual sprints suggested training induced an increase in muscle oxygen extraction; a faster recovery time for muscle oxygenation suggested positive training induced changes and significant changes in muscle blood flow also occur. As a strong correlation was seen between an increased reoxygenation rate and an improved swim performance time, these findings support the use of uNIRS as a new performance analysis tool in swimming.

Changes in peripheral muscle oxygenation measured with near-infrared spectroscopy in preterm neonates within the first 24 h after birth

2020 ◽  
Vol 41 (7) ◽  
pp. 075003
Author(s):  
Christina Wolfsberger ◽  
Nariae Baik-Schneditz ◽  
Bernhard Schwaberger ◽  
Corinna Binder-Heschl ◽  
Höller Nina ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Muscle Oxygenation ◽  
Preterm Neonates ◽  
Peripheral Muscle

scholarly journals Vastus lateralis oxygenation during prolonged cycling in healthy males

2006 ◽  
Vol 31 (1) ◽  
pp. 48-55 ◽  
Author(s):  
Kotaro Kawaguchi ◽  
Yukiko Hayashi ◽  
Kiyokazu Sekikawa ◽  
Mitsuru Tabusadani ◽  
Tsutomu Inamizu ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Oxygen Uptake ◽  
Blood Volume ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Vastus Lateralis ◽  
Muscle Oxygenation ◽  
Cardiovascular Drift ◽  
Systemic Oxygen ◽  
The Relationship

This study examined the relationship between acute cardiorespiratory and muscle oxygenation and blood volume changes during prolonged exercise. Eight healthy male volunteers (mean maximum oxygen uptake ([Formula: see text]O2max) = 41.6 ± 2.4 mL/kg/min) performed 60 min submaximal cycling at 50% [Formula: see text]O2max. Oxygen uptake ([Formula: see text]O2) was measured by indirect spirometry, cardiac output (CO) was estimated using a PortapresTM, and right vastus lateralis oxyhemoglobin/ myoglobin (oxyHb/Mb), deoxyhemoglobin/myoglobin (deoxyHb/Mb), and total hemoglobin/myoglobin (total Hb/Mb) were recorded using near-infrared spectroscopy (NIRS). After 40 min of exercise, there was a significant increase in [Formula: see text]O2 due to a significantly higher arteriovenous oxygen difference ((a - v)O2diff). After 30 min of exercise CO remained unchanged, but there was a significant decrease in stroke volume and a proportionate increase in heart rate, thus indicating the occurrence of cardiovascular drift. During the first few minutes of exercise, there was a decline in oxyHb/Mb and total Hb/Mb, whereas deoxyHb/Mb remained unchanged. Thereafter, oxyHb/Mb and total Hb/Mb increased systematically until the termination of exercise while deoxyHb/Mb declined. After 40 min of exercise, these changes were significantly different from the baseline values. There were no significant correlations between the changes in the NIRS variables and systemic [Formula: see text]O2 or mixed (a - v)O2diff during exercise. These results suggest that factors other than localized changes in muscle oxygenation and blood volume account for the increased [Formula: see text]O2 during prolonged submaximal exercise. Key words: near infrared spectroscopy, cardiovascular drift, systemic oxygen consumption.

Muscle oxygenation dynamics in response to electrical stimulation as measured with near‐infrared spectroscopy: A pilot study

2019 ◽  
Vol 12 (3) ◽  
Author(s):  
Yi‐Hua Huang ◽  
Ming‐Lung Chuang ◽  
Pay‐Zen Wang ◽  
Yueh‐Chi Chen ◽  
Chung‐Ming Chen ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Infrared Spectroscopy ◽  
Pilot Study ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Muscle Oxygenation

scholarly journals Changes in skeletal muscle oxygenation during exercise measured by near-infrared spectroscopy on ascent to altitude

Critical Care ◽  
2009 ◽  
Vol 13 (Suppl 5) ◽  
pp. S7 ◽  
Author(s):  
Daniel S Martin ◽  
Denny ZH Levett ◽  
Michael Mythen ◽  
Mike PW Grocott ◽  
Keyword(s):  
Skeletal Muscle ◽  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Muscle Oxygenation ◽  
Skeletal Muscle Oxygenation

scholarly journals EVALUATION OF THE MUSCLE OXYGENATION CURVE BY NEAR-INFRARED SPECTROSCOPY (NIRS) DURING RAMP EXERCISE

1999 ◽  
Vol 48 (1) ◽  
pp. 125-135 ◽  
Author(s):  
TSUYOSHI WADAZUMI ◽  
YUTAKA KIMURA ◽  
YOSHITAKE OSHIMA ◽  
TADAYOSHI MIYAMOTO ◽  
SHIGEHIRO TANAKA ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Muscle Oxygenation ◽  
Ramp Exercise
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