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near infrared spectroscopy muscle oxygen

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https://www.readbyqxmd.com/read/28101413/significant-and-sustaining-elevation-of-blood-oxygen-induced-by-chinese-cupping-therapy-as-assessed-by-near-infrared-spectroscopy
#1
Ting Li, Yaoxian Li, Yu Lin, Kai Li
Cupping therapy has been used in traditional Chinese medicine for thousands of years to relieve muscle pain/tendency/fatigue and to cure or reduce symbols of other diseases. However, its therapeutic effect is sparsely interpreted in the language of modern physiology. To objectively evaluate its therapeutic effect, we focused on dry cupping treatment and utilized near-infrared spectroscopy (NIRS) to assess the concentration change in oxy-hemoglobin ([HbO2]), deoxy-hemoglobin ([Hb]), and blood volume in the course of cupping therapy over 13 volunteers on the infraspinatus muscle, where is usually applied for shoulder pains...
January 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28059464/adults-with-initial-metabolic-syndrome-have-altered-muscle-deoxygenation-during-incremental-exercise
#2
Alessandro da Costa Machado, Thales Coelho Barbosa, Allan Robson Kluser Sales, Marcio Nogueira de Souza, Antonio Claudio Lucas da Nóbrega, Bruno Moreira Silva
OBJECTIVE: Reduced aerobic power is independently associated with metabolic syndrome (MetS) incidence and prevalence in adults. This study investigated whether muscle deoxygenation (proxy of microvascular O2 extraction) during incremental exercise is altered in MetS and associated with reduced oxygen consumption ( V˙O2peak ). METHODS: Twelve men with initial MetS (no overt diseases and medication-naive; mean ± SD, age 38 ± 7 years) and 12 healthy controls (HCs) (34 ± 7 years) completed an incremental cycling test to exhaustion, in which pulmonary ventilation and gas exchange (metabolic analyzer), as well as vastus lateralis deoxygenation (near infrared spectroscopy), were measured...
January 6, 2017: Obesity
https://www.readbyqxmd.com/read/28018244/differences-in-muscle-oxygenation-perceived-fatigue-and-recovery-between-long-track-and-short-track-speed-skating
#3
Florentina J Hettinga, Marco J Konings, Chris E Cooper
Due to the technical nature of speed skating, that is affecting physiological mechanisms such as oxygenation and blood flow, this sport provides a unique setting allowing us to uncover novel mechanistic insights of the physiological response to exercise in elite middle-distance and endurance sports. The present study aimed to examine the influence of skating mode (short-track vs. long-track) on muscle oxygenation, perceived fatigue, and recovery in elite speed skating. Muscle oxygenation of 12 talented short-track speed skaters was continuously monitored during a long-track (LT) and a short-track (ST) skating time-trial of maximal effort using near-infrared spectroscopy (NIRS) on the m...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/28000230/mitochondrial-capacity-muscle-endurance-low-energy-in-friedreich-ataxia
#4
Hannah M Bossie, T Bradley Willingham, Robbi A Van Schoick, Patrick J O'Connor, Kevin K McCully
INTRODUCTION: We noninvasively evaluated skeletal muscle mitochondrial capacity, muscle-specific endurance, and energy/fatigue feelings in persons with Friedreich ataxia (FRDA) and able-bodied controls (AB). METHODS: Forearm mitochondrial capacity was measured in FRDA (n=16) and AB (n=10) using the rate of recovery of oxygen consumption after electrical stimulation with near-infrared spectroscopy. Mechanomyography (MMG) assessed muscle endurance after electrical stimulation for 3-minutes at 2Hz, 4Hz, and 6Hz...
December 21, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27987104/phenylephrine-increases-near-infrared-spectroscopy-determined-muscle-oxygenation-in-men
#5
H Sørensen, J H Thomsen, A S P Meyer, D Terzic, L Hilsted, J Kjærgaard, J P Goetze, T C Barbosa, N H Secher
Phenylephrine increases mean arterial pressure (MAP) by enhanced total peripheral resistance (TPR) but near-infrared spectroscopy (NIRS) determined muscle oxygenation (SmO2) increases. We addressed that apparent paradox during supine rest and head-up tilt (HUT). Variables were determined ± phenylephrine in males during supine rest (n = 17) and 40° HUT (n = 7). MAP, stroke volume (SV), heart rate (HR), and TPR were derived by Modelflow(®) and NIRS determined biceps SmO2 and (tibial) bone oxygenation (StibialO2)...
December 16, 2016: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/27983541/effect-of-increasing-mean-arterial-blood-pressure-on-microcirculation-in-patients-with-cardiogenic-shock-supported-by-extracorporeal-membrane-oxygenation
#6
Zhongtao Du, Zaishen Jia, Jinhong Wang, Zhichen Xing, Chunjing Jiang, Bo Xu, Xiaofang Yang, Feng Yang, Na Miao, Jialin Xing, Hong Wang, Ming Jia, Xiaotong Hou
BACKGROUND: Little is known about the effect of mean arterial blood pressure (MAP) augmentation on the microcirculation in cardiogenic-shock patients with peripheral veno-arterial extracorporeal membrane oxygenation (ECMO) support. We investigated the effect of increasing MAP on the microcirculation in cardiogenic-shock patients with ECMO support. METHODS: A single-center prospective observational study under taken in ICU patients undergoing ECMO support for post-cardiotomy cardiogenic shock was carried out...
December 14, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27942271/recent-developments-in-near-infrared-spectroscopy-nirs-for-the-assessment-of-local-skeletal-muscle-microvascular-function-and-capacity-to-utilise-oxygen
#7
REVIEW
Siana Jones, Scott T Chiesa, Nishi Chaturvedi, Alun D Hughes
PURPOSE OF REVIEW: Continuous wave near infrared spectroscopy (CW NIRS) provides non-invasive technology to measure relative changes in oxy- and deoxy-haemoglobin in a dynamic environment. This allows determination of local skeletal muscle O2 saturation, muscle oxygen consumption ([Formula: see text]) and blood flow. This article provides a brief overview of the use of CW NIRS to measure exercise-limiting factors in skeletal muscle. RECENT FINDINGS: NIRS parameters that measure O2 delivery and capacity to utilise O2 in the muscle have been developed based on response to physiological interventions and exercise...
December 2016: Artery Research
https://www.readbyqxmd.com/read/27935081/hemodynamic-function-during-finger-force-production-tasks-in-healthy-adults
#8
Luca Pollonini, Lena Younes, Stacey L Gorniak
INTRODUCTION: Near-infrared spectroscopy (NIRS) is a non-invasive technique utilized to measure muscle hemodynamics. The focus of this study was to evaluate changes in muscle oxygenation during sustained maximal force production in young, healthy control individuals to establish baseline function in an ideal population. METHODS: NIRS was used to monitor reduced hemoglobin (HbR) and oxygenated hemoglobin (HbO) in forearm muscles. Hemodynamic responses during force production tasks were monitored in real time...
December 9, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27904454/red-blood-cell-transfusion-and-skeletal-muscle-tissue-oxygenation-in-anaemic-haematologic-outpatients
#9
Matej Podbregar, Ana Ursula Gavric, Eva Podbregar, Hugon Mozina, Sebastian Stefanovic
BACKGROUND: Stored red blood cells (RBCs) accumulate biochemical and biophysical changes, known as storage lesion. The aim of this study was to re-challenge current data that anaemia in chronically anaemic haematology patients is not associated with low skeletal muscle tissue oxygen (StO2), and that RBC storage age does not influence the tissue response after ischaemic provocation, using near-infrared spectroscopy. PATIENTS AND METHODS: Twenty-four chronic anaemic haematology patients were included...
December 1, 2016: Radiology and Oncology
https://www.readbyqxmd.com/read/27895999/quantifying-the-effect-of-adipose-tissue-in-muscle-oximetry-by-near-infrared-spectroscopy
#10
Nassim Nasseri, Stefan Kleiser, Daniel Ostojic, Tanja Karen, Martin Wolf
Change of muscle tissue oxygen saturation (StO2), due to exercise, measured by near infrared spectroscopy (NIRS) is known to be lower for subjects with higher adipose tissue thickness. This is most likely not physiological but caused by the superficial fat and adipose tissue. In this paper we assessed, in vitro, the influence of adipose tissue thickness on muscle StO2, measured by NIRS oximeters. We measured StO2 of a liquid phantom by 3 continuous wave (CW) oximeters (Sensmart Model X-100 Universal Oximetry System, INVOS 5100C, and OxyPrem v1...
November 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/27878503/evaluation-of-different-near-infrared-spectroscopy-technologies-for-assessment-of-tissue-oxygen-saturation-during-a-vascular-occlusion-test
#11
Kevin Steenhaut, Koen Lapage, Thierry Bové, Stefan De Hert, Annelies Moerman
An increasing number of NIRS devices are used to provide measurements of peripheral tissue oxygen saturation (StO2). The aim of the present study is to test the hypothesis that despite technological differences between devices, similar trend values will be obtained during a vascular occlusion test. The devices compared are NIRO-200NX, which measures StO2 and oxyhemoglobin by spatially resolved spectroscopy and the Beer-Lambert law, respectively, and INVOS 5100C and Foresight Elite, which both measure StO2 with the Beer-Lambert law, enhanced with the spatial resolution technique...
November 22, 2016: Journal of Clinical Monitoring and Computing
https://www.readbyqxmd.com/read/27873328/liposome-encapsulated-hemoglobin-improves-tumor-oxygenation-as-detected-by-near-infrared-spectroscopy-in-colon-carcinoma-in-mice
#12
Fumio Kawaguchi, Akira T Kawaguchi, Chieko Murayama, Akemi Kamijo, Munetaka Haida
Liposome-encapsulated hemoglobin (LEH) with high (h-LEH, P50 O2  = 10 mm Hg) or low O2 affinity (l-LEH, P50 O2  = 40 mm Hg) may improve O2 delivery to sensitize tumor tissues for radiotherapy. A total of 10 mL/kg of h-LEH, l-LEH, red blood cells (RBCs), or saline was infused in mice transplanted with murine colon carcinoma with near-infrared spectroscopy (NIRS) detectors set at the tumor (right leg) and intact muscle (left leg). NIRS recorded changes in the amount of oxyhemoglobin (oxyHb), deoxyhemoglobin (deoxyHb), and their sum (tHb) with the animals spontaneously breathing room air (10 min), pure O2 (5 min), and then back to room air...
November 22, 2016: Artificial Organs
https://www.readbyqxmd.com/read/27872834/factors-associating-with-oxygenation-of-lower-limb-muscle-tissue-in-hemodialysis-patients
#13
Haruhisa Miyazawa, Susumu Ookawara, Kiyonori Ito, Katsunori Yanai, Hiroki Ishii, Taisuke Kitano, Mitsutoshi Shindo, Yuichiro Ueda, Yoshio Kaku, Keiji Hirai, Taro Hoshino, Kaoru Tabei, Yoshiyuki Morishita
AIM: To evaluate the lower-limb muscle oxygenation in hemodialysis (HD) patients and identify the factors associating with muscle oxygenation. METHODS: Sixty-seven HD patients (53 men and 14 women; mean age, 67.1 ± 1.2 years; mean HD duration, 5.6 ± 0.9 years) were recruited. In addition, 15 healthy individuals (nine men and six women; mean age, 38.2 ± 4.6 years) were recruited as the control group. Lower-limb muscle regional saturation of oxygen (rSO2) was monitored on the lateral side of the gastrocnemius muscle before HD using an INVOS 5100C (Covidien Japan, Tokyo, Japan), which utilizes near-infrared spectroscopy...
November 6, 2016: World Journal of Nephrology
https://www.readbyqxmd.com/read/27821920/effects-of-friction-massage-of-the-popliteal-fossa-on-dynamic-changes-in-muscle-oxygenation-and-ankle-flexibility
#14
Koji Iwamoto, Masafumi Mizukami, Yasutsugu Asakawa, Masaharu Yoshio, Ryo Ogaki, Masahiro Takemura
[Purpose] This study aimed to examine whether or not friction massage of the popliteal fossa would be effective for achieving dynamic changes in muscle oxygenation and ankle flexibility. [Subjects and Methods] Twelve healthy male university students participated. Before and after friction massage, dynamic changes in muscle oxygenation and ankle flexibility were measured by near-infrared spectroscopy to evaluate its efficacy. [Results] Oxygenated hemoglobin was significantly higher after as compared to before massage...
October 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27798357/muscle-oxygenation-during-dynamic-plantar-flexion-exercise-combining-bold-mri-with-traditional-physiological-measurements
#15
Matthew D Muller, Zhijun Li, Christopher T Sica, J Carter Luck, Zhaohui Gao, Cheryl A Blaha, Aimee E Cauffman, Amanda J Ross, Nathan J R Winkler, Michael D Herr, Kristen Brandt, Jianli Wang, David C Gallagher, Prasanna Karunanayaka, Jeffrey Vesek, Urs A Leuenberger, Qing X Yang, Lawrence I Sinoway
Blood-oxygen-level-dependent magnetic resonance imaging (BOLD MRI) has the potential to quantify skeletal muscle oxygenation with high temporal and high spatial resolution. The purpose of this study was to characterize skeletal muscle BOLD responses during steady-state plantar flexion exercise (i.e., during the brief rest periods between muscle contraction). We used three different imaging modalities (ultrasound of the popliteal artery, BOLD MRI, and near-infrared spectroscopy [NIRS]) and two different exercise intensities (2 and 6 kg)...
October 2016: Physiological Reports
https://www.readbyqxmd.com/read/27784687/dietary-nitrate-supplementation-and-exercise-tolerance-in-patients-with-heart-failure-with-reduced-ejection-fraction
#16
Daniel M Hirai, Joel T Zelt, Joshua H Jones, Luiza G Castanhas, Robert F Bentley, Wendy Earle, Patti Staples, Michael E Tschakovsky, John McCans, Denis E O'Donnell, J Alberto Neder
Endothelial dysfunction and reduced nitric oxide (NO) signaling are key abnormalities leading to skeletal muscle oxygen delivery-utilization mismatch and poor physical capacity in patients with heart failure with reduced ejection fraction (HFrEF). Oral inorganic nitrate supplementation provides an exogenous source of NO that may enhance locomotor muscle function and oxygenation with consequent improvement in exercise tolerance in HFrEF. Thirteen patients (left ventricular ejection fraction ≤40%) were enrolled in a double-blind, randomized crossover study to receive concentrated nitrate-rich (nitrate) or nitrate-depleted (placebo) beetroot juice for 9 days...
January 1, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/27765748/limitations-of-skeletal-muscle-oxygen-delivery-and-utilization-during-moderate-intensity-exercise-in-moderately-impaired-patients-with-chronic-heart-failure
#17
Victor M Niemeijer, Ruud F Spee, Thijs Schoots, Pieter F F Wijn, Hareld M C Kemps
The extent and speed of transient skeletal muscle deoxygenation during exercise onset in patients with chronic heart failure (CHF) are related to impairments of local O2 delivery and utilization. This study examined the physiological background of submaximal exercise performance in 19 moderately impaired patients with CHF (Weber class A, B, and C) compared with 19 matched healthy control (HC) subjects by measuring skeletal muscle oxygenation (SmO2) changes during cycling exercise. All subjects performed two subsequent moderate-intensity 6-min exercise tests (bouts 1 and 2) with measurements of pulmonary oxygen uptake kinetics and SmO2 using near-infrared spatially resolved spectroscopy at the vastus lateralis for determination of absolute oxygenation values, amplitudes, kinetics (mean response time for onset), and deoxygenation overshoot characteristics...
December 1, 2016: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/27744292/walking-economy-at-simulated-high-altitude-in-human-healthy-young-male-lowlanders
#18
Masahiro Horiuchi, Yoko Handa, Daijiro Abe, Yoshiyuki Fukuoka
We measured oxygen consumption during walking per unit distance (Cw) values for 12 human healthy young males at six speeds from 0.667 to 1.639 m s(-1) (four min per stage) on a level gradient under normobaric normoxia, moderate hypoxia (15% O2), and severe hypoxia (11% O2). Muscle deoxygenation (HHb) was measured at the vastus lateralis muscle using near-infrared spectroscopy. Economical speed which can minimize the Cw in each individual was calculated from a U-shaped relationship. We found a significantly slower economical speed (ES) under severe hypoxia [1...
October 15, 2016: Biology Open
https://www.readbyqxmd.com/read/27722775/impairments-in-microvascular-function-and-skeletal-muscle-oxygenation-in-women-with-gestational-diabetes-mellitus-links-to-cardiovascular-disease-risk-factors
#19
Konstantina Dipla, Areti Triantafyllou, Iris Grigoriadou, Evangelia Kintiraki, Georgios A Triantafyllou, Pavlos Poulios, Ioannis S Vrabas, Andreas Zafeiridis, Stella Douma, Dimitrios G Goulis
AIMS/HYPOTHESIS: Gestational diabetes mellitus (GDM) is a risk factor for the development of endothelial dysfunction and cardiovascular disease. However, in vivo microvascular endothelial function in GDM has not been investigated. This study aimed to examine, using near-infrared spectroscopy (NIRS), whether: (1) there are differences in microvascular reactivity and skeletal muscle oxygen consumption (m[Formula: see text]) at rest and during exercise between GDM and uncomplicated pregnancies; and (2) there is an association of NIRS indices with macrovascular function and cardiovascular disease risk factors...
January 2017: Diabetologia
https://www.readbyqxmd.com/read/27714456/characterizing-cerebral-and-locomotor-muscle-oxygenation-to-incremental-ramp-exercise-in-healthy-children-relationship-with-pulmonary-gas-exchange
#20
Kristof Vandekerckhove, Ilse Coomans, Annelies Moerman, Daniel De Wolf, Jan Boone
AIMS: To characterize the oxygenation responses at cerebral and locomotor muscle level to incremental exercise in children and to assess the interrelationship with the pulmonary gas exchange responses. METHODS: Eighteen children (9 boys, 9 girls) (mean age 10.9 ± 1.0 years) performed incremental cycle ramp exercise to exhaustion. The concentration of cerebral and muscle oxygenated (O2Hb) and deoxygenated (HHb) hemoglobin (by means of near-infrared spectroscopy) and pulmonary gas exchange was recorded...
December 2016: European Journal of Applied Physiology
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