Article
Medicine, General & Internal
Martijn van Hooff, Jem Arnold, Eduard Meijer, Paul Schreuder, Marta Regis, Lin Xu, Marc Scheltinga, Hans Savelberg, Goof Schep
Summary: This study compared the diagnostic accuracy of NIRS-derived variables with ABI(Flexed) in diagnosing FLIA. The results showed that NIRS kinetic variables combined with ABI(Flexed) had a higher diagnostic accuracy, while ABI(Flexed) alone had worse test characteristics.
JOURNAL OF CLINICAL MEDICINE
(2022)
Article
Biotechnology & Applied Microbiology
Yoo Hwan Kim, Seung-Ho Paik, Youngmin Kim, Jaechul Yoon, Yong Suk Cho, Dohern Kym, Jun Hur, Wook Chun, Beop-Min Kim, Byung-Jo Kim
Summary: This study assessed the burn extent and depth in patients with burns using a custom-built 36-channel functional near-infrared spectroscopy system. Hemodynamic tissue signals measured during fNIRS showed significant differences between different burn categories, indicating that functional near-infrared spectroscopy can help with the early judgment of burn extent and depth by reflecting differences in the oxygen saturation levels in the skin.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Physiology
Richie P. Goulding, Dai Okushima, Yoshiyuki Fukuoka, Simon Marwood, Narihiko Kondo, David C. Poole, Thomas J. Barstow, Shunsaku Koga
Summary: The study found that during exercise in the supine position, there is an increase in deoxygenation in superficial muscles, but the deep muscles maintain a stable level of deoxygenation. This suggests that deep muscles are able to defend the balance between oxygen delivery and utilization against reduced perfusion pressure during supine exercise.
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2021)
Article
Physiology
Jiri Balas, Jan Gajdosik, David Giles, Simon Fryer
Summary: This study aimed to estimate the maximal metabolic steady state in climbing using a mathematical model and muscle oxygenation breakpoint detection. The results showed that the estimated critical angle could accurately predict climbers' performance in climbing tasks, and the muscle oxygenation breakpoint provided a valid estimate of the critical angle.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Education, Scientific Disciplines
Carrie Ellis, Douglas Burns
Summary: This article introduces the interaction among the phosphagen, glycolytic, and aerobic systems during exercise, as well as the use of near-infrared spectroscopy to observe muscle oxygen utilization. Through hands-on exploration, students can better understand the contribution and timing of these three energy systems, as well as the concept that all exercise is ultimately dependent on oxygen.
ADVANCES IN PHYSIOLOGY EDUCATION
(2022)
Article
Computer Science, Information Systems
Yi Han, Qian Zhai, Yinkai Yu, Shuoyu Wang, Tao Liu
Summary: This article introduces a wearable measurement system for blood oxygen saturation in the prefrontal cortex using dual-wavelength functional near-infrared spectroscopy. The system is well-designed for easy use and has the advantages of comfort, portability, and affordability. The performance of the system is investigated through calibration and experimental results. It shows great potential in physiological monitoring of the prefrontal cortex and can be widely deployed in daily life.
Article
Environmental Sciences
Xueqin Han, Danping Xie, Han Song, Jinfang Ma, Yongxin Zhou, Jiaze Chen, Yanyan Yang, Furong Huang
Summary: In order to effectively monitor environmental water pollution and meet human water needs, this study developed a prediction model for chemical oxygen demand (COD) in different water systems by combining near-infrared (NIR) spectroscopy with partial least squares regression (PLSR). The results showed that using variable selection algorithms improved the accuracy and simplicity of the model, with the combined model performances better than that of PLSR alone. These findings have important practical value for predicting COD content in different water systems using NIR spectroscopy.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Review
Biochemistry & Molecular Biology
Charlotte Delrue, Sander De Bruyne, Marijn M. Speeckaert
Summary: Traditional renal biomarkers are insensitive for early detection of kidney disease. Infrared spectroscopy offers a label-free and non-destructive method for quick and inexpensive diagnosis of kidney disorders. This review provides an overview of the applications of near- and mid-infrared spectroscopy in patients with acute kidney injury and chronic kidney disease.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Analytical
Qitao Tan, Yan Wang, Zengyong Li, Daifa Wang, Wing-Kai Lam, Duo Wai-Chi Wong, Yinghu Peng, Guoxin Zhang, Ming Zhang
Summary: This study investigated the relationship between muscle hemodynamic response during recovery and exercise quantity, finding that local microvascular regulators significantly contribute to blood volume oscillations, which are in turn related to the amount of exercise.
Article
Physiology
Joel Rocha, Norita Gildea, Donal O'Shea, Simon Green, Mikel Egana
Summary: This study found that high-intensity priming exercise can improve the rate of oxygen uptake kinetics in patients with T2D, reduce oxygen depletion during high-intensity exercise, and help better match the delivery and utilization rate of oxygen.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Physiology
Rafael A. de Aguiar, Tiago Turnes, Fernando K. Borszcz, Joao A. G. Raimundo, Fabrizio Caputo
Summary: This study assessed the reliability of near-infrared spectroscopy-derived muscle oxygen uptake kinetics following running exercise and its relationship with parameters of aerobic fitness. The findings showed that the time constant of muscle oxygen uptake kinetics in the gastrocnemius presented good reliability and correlated with aerobic fitness parameters. Therefore, near-infrared spectroscopy-derived muscle oxidative capacity can be used to analyze the oxidative system on both local and systemic levels.
EXPERIMENTAL PHYSIOLOGY
(2022)
Review
Pediatrics
Christina H. Wolfsberger, Nina Hoeller, Ena Suppan, Bernhard Schwaberger, Berndt Urlesberger, Britt Nakstad, Gerhard Pichler
Summary: This systematic review explores the clinical use of pFOE in term and preterm neonates and the changes in pFOE values over time. The findings suggest that pFOE measured with NIRS in combination with venous occlusion can provide valuable insight into peripheral perfusion, oxygenation, and disturbances of microcirculation in neonates with different pathological findings.
FRONTIERS IN PEDIATRICS
(2022)
Article
Biochemistry & Molecular Biology
Scott E. Boebinger, Rowan O. Brothers, Sistania Bong, Bharat Sanders, Courtney McCracken, Lena H. Ting, Erin M. Buckley
Summary: The study found that combining near-infrared spectroscopy with diffuse correlated spectroscopy can accurately measure the muscle oxygen metabolism index in the medial gastrocnemius of healthy adults. However, there is substantial variability in the calibration coefficient between this index and traditional assessment methods, indicating the need for calibration before each monitoring session.
Article
Physiology
Siana Jones, Therese Tillin, Suzanne Williams, Alicja Rapala, Nishi Chaturvedi, Alun D. Hughes
Summary: Measuring local haemodynamics in skeletal muscle can provide valuable insights into tissue oxygen delivery during high demand situations such as exercise. This study compared the skeletal muscle microvascular response during post-occlusive reactive hyperaemia (PORH) with the response to exercise using near-infrared spectroscopy (NIRS) and examined the associations between muscle measures and exercise capacity or sex. The results showed that these local microvascular NIRS measures are associated with exercise capacity in older adults and can detect differences in microvascular reactivity between men and women in a community-based sample.
FRONTIERS IN PHYSIOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Longbo Jiang, Shaoyu Zhou, Jinjuan Yang, Hou Wang, Hanbo Yu, Haoyun Chen, Yanlan Zhao, Xingzhong Yuan, Wei Chu, Hui Li
Summary: TiO2, a widely used semiconductor photocatalyst in the field of ultraviolet photocatalysis, faces challenges like wide bandgap and fast recombination of charge carriers, affecting its solar light utilization. Enhancing the overall solar spectrum utilization of TiO2, especially in the near-infrared region, is crucial for efficient solar energy conversion. Strategies such as hybridization with other semiconductors and bandgap engineering are discussed to improve NIR light capture of TiO2-based photocatalysts in this review, along with their applications in various fields and future development prospects.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Physiology
Ryo Takagi, Ayaka Tabuchi, Tomoyo Asamura, Seiya Hirayama, Ryo Ikegami, Yoshinori Tanaka, Daisuke Hoshino, David C. Poole, Yutaka Kano
Summary: In a study examining the effects of cooling on intracellular calcium ion concentration after eccentric contractions, it was found that cooling post-exercise could lead to an increase in high [Ca2+](i) sites in muscle cells, potentially exacerbating muscle damage. Additionally, cooling was shown to exacerbate muscle strength deficits and fiber damage induced by eccentric contractions, suggesting a mechanistic basis for how post-exercise cryotherapy may impact muscle function.
AMERICAN JOURNAL OF PHYSIOLOGY-REGULATORY INTEGRATIVE AND COMPARATIVE PHYSIOLOGY
(2021)
Letter
Neurosciences
David C. Poole, Harry B. Rossiter, George A. Brooks, L. Bruce Gladden
JOURNAL OF PHYSIOLOGY-LONDON
(2021)
Review
Neurosciences
David C. Poole, Harry B. Rossiter, George A. Brooks, L. Bruce Gladden
Summary: The anaerobic threshold (AT) is a controversial concept in exercise physiology and medicine, originally thought to be caused by muscle anoxia but now understood to be a response to increased glycolytic flux. Lactate is now appreciated as an important energy source and signaling molecule, with non-invasive estimation of LT using the gas exchange threshold remaining important in exercise training and in the clinic.
JOURNAL OF PHYSIOLOGY-LONDON
(2021)
Article
Sport Sciences
Miho Yoshimura, Tatsuya Hojo, Hayato Yamamoto, Misato Tachibana, Masatoshi Nakamura, Yoshiyuki Fukuoka
Summary: This study investigated the acute effects of cold-water immersion with higher CO2 concentration on subjects' sublingual temperature, blood lactate, heart rate, and aerobic cycling work efficiency. The results showed that CO2 immersion improved work efficiency and reduced blood lactate and heart rate.
RESEARCH IN SPORTS MEDICINE
(2022)
Review
Biochemistry & Molecular Biology
David C. Poole, Yutaka Kano, Shunsaku Koga, Timothy Musch
Summary: Krogh's pioneering research established the foundation of muscle microcirculation and highlighted the crucial role of capillaries in muscle activity and the promotion of blood-myocyte oxygen flux.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY
(2021)
Article
Physiology
Richie P. Goulding, Dai Okushima, Yoshiyuki Fukuoka, Simon Marwood, Narihiko Kondo, David C. Poole, Thomas J. Barstow, Shunsaku Koga
Summary: The study found that during exercise in the supine position, there is an increase in deoxygenation in superficial muscles, but the deep muscles maintain a stable level of deoxygenation. This suggests that deep muscles are able to defend the balance between oxygen delivery and utilization against reduced perfusion pressure during supine exercise.
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2021)
Editorial Material
Neurosciences
David C. Poole
JOURNAL OF PHYSIOLOGY-LONDON
(2021)
Letter
Neurosciences
George A. Brooks, Harry B. Rossiter, David C. Poole, L. Bruce Gladden
JOURNAL OF PHYSIOLOGY-LONDON
(2021)
Article
Physiology
Rachel C. Kelley, Lauren Betancourt, Andrea M. Noriega, Suzanne C. Brinson, Nuria Curbelo-Bermudez, Dongwoo Hahn, Ravi A. Kumar, Eliza Balazic, Derek R. Muscato, Terence E. Ryan, Robbert J. van der Pijl, Shengyi Shen, Coen A. C. Ottenheijm, Leonardo F. Ferreira
Summary: Heart failure with preserved ejection fraction (HFpEF) is highly prevalent in postmenopausal women and is characterized by specific features such as skeletal myopathy. A new rat model of postmenopausal HFpEF was developed and it exhibited cardiovascular and systemic abnormalities similar to the human disease. The study found that the skeletal myopathy of postmenopausal HFpEF involves decreased muscle force, mitochondrial dysfunction, and oxidative imbalance.
JOURNAL OF APPLIED PHYSIOLOGY
(2022)
Article
Sport Sciences
Mako Fujita, Miho Yoshimura, Masatoshi Nakamura, Tatsuya Hojo, Yoshiyuki Fukuoka
Summary: This study investigated the effects of consecutive CO2-rich cold water immersion on sublingual temperature, blood lactate, and heart rate after high-intensity intermittent exercise. The results showed that the cold water immersion group experienced significant reductions in heart rate, as well as lower blood lactate levels compared to the passive recovery group. Additionally, the decline in peak pedal repetitions was significantly correlated with post-immersion heart rate and blood lactate values.
JOURNAL OF EXERCISE SCIENCE & FITNESS
(2022)
Article
Biochemistry & Molecular Biology
Ravi Kumar, Andrew R. Coggan, Leonardo F. Ferreira
Summary: Nitric oxide (NO) is a complex modulator of skeletal muscle contractile function, with the ability to increase or decrease force and power output depending on various factors. The effects of NO on contractile function may be dose-dependent and have fiber type and sex specificity, potentially mediated by post-translational modifications of myofibrillar proteins.
NITRIC OXIDE-BIOLOGY AND CHEMISTRY
(2022)
Article
Physiology
Mako Fujita, Kiyotaka Kamibayashi, Tomoko Aoki, Masahiro Horiuchi, Yoshiyuki Fukuoka
Summary: This study tested the effects of restricting step frequency and stride length on ventilatory response during sinusoidal walking. The results showed that restricting step frequency decreased the amplitude of breathing frequency response, while restricting stride length increased the amplitude of breathing frequency and volume response. This study provides new insights into exercise hyperpnea dynamics.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Physiology
Rachel C. Kelley, Stephanie S. Lapierre, Derek R. Muscato, Dongwoo Hahn, Demetra D. Christou, Leonardo F. Ferreira
Summary: This study found that a high-fat, high-sucrose diet induces cardiac dysfunction but does not affect the diaphragm in male rats. Supplementation with the antioxidant N-acetylcysteine can attenuate the cardiac abnormalities caused by this diet. This research is important for understanding the cardiovascular dysfunction caused by obesity and the therapeutic potential of antioxidants.
EXPERIMENTAL PHYSIOLOGY
(2022)
Article
Cell Biology
Ravi A. Kumar, Trace Thome, Omar M. Sharaf, Terence E. Ryan, George J. Arnaoutakis, Eric Jeng, Leonardo F. Ferreira
Summary: Cardiomyocyte dysfunction in patients with end-stage heart failure with reduced ejection fraction is associated with mitochondrial dysfunction. Reversible thiol oxidation can modulate mitochondrial function, but other components of mitochondrial energy transfer are limiting factors in end-stage heart failure.
Article
Sport Sciences
Miho Yoshimura, Masatoshi Nakamura, Tatsuya Hojo, Aya Arai, Yoshiyuki Fukuoka
Summary: The experiment found that CO2-rich coolwater immersion can suppress the elevation of body temperature, even in a hot outdoor environment. Thus, CO2-rich coolwater immersion may be a more effective method in reducing body temperature in a hot environment.
JOURNAL OF EXERCISE SCIENCE & FITNESS
(2023)