Article
Nutrition & Dietetics
Chuan Zhang, Christopher M. Modlesky, Kevin K. McCully
Summary: The study evaluated the utility and reliability of near-infrared spectroscopy (NIRS) in measuring tibial hemodynamics and metabolic rate. The results showed that NIRS is a suitable tool for monitoring hemodynamics and metabolism in the tibia. Additionally, the local muscle exercise protocol utilized did not influence bone hemodynamics or metabolic rate, suggesting that high level of loading and exercise volume may be needed to elicit measurable metabolic changes in bone.
APPLIED PHYSIOLOGY NUTRITION AND METABOLISM
(2021)
Article
Sport Sciences
Massimo Teso, Alessandro L. Colosio, Silvia Pogliaghi
Summary: There is a mismatch between heart rate and metabolic intensity. Whenever exercise is prescribed based on heart rate, target values should be adjusted over time to maintain the desired metabolic stimulus.
MEDICINE & SCIENCE IN SPORTS & EXERCISE
(2022)
Article
Nutrition & Dietetics
Si Chen, Shubo Wang, Shuqiao Ding, Chuan Zhang
Summary: The relationship between glucose metabolism and bone health is not well-studied. This study used OGTT and NIRS to investigate gender-specific disparities in tibial hemodynamic responses among young healthy adults. The results showed that the tibial hemodynamic responses to OGTT were similar between males and females.
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)
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
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)
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)
Article
Chemistry, Applied
Arian Amirvaresi, Nastaran Nikounezhad, Maryam Amirahmadi, Bahram Daraei, Hadi Parastar
Summary: The study found that NIR spectroscopy is more effective than MIR in predicting the origin of saffron samples, while PLS-DA shows high accuracy in detecting adulterants, with NIR demonstrating excellent performance in estimating the level of adulteration.
Article
Chemistry, Multidisciplinary
Joseph Ochieng' Juma, John Onyango Adongo, Joshua Kiprotich Kibet
Summary: This study used a UV-Visible-NIR double-beam spectrometer to characterize the formation of an infrared-active organic dye product resulting from a dehydration amination reaction. Results showed that the presence of ferricyanide ions led to the formation of the phenolic dye product, whereas their absence hindered its formation, indicating their catalytic action. Kinetic experiments revealed a first-order reaction with an average rate constant of 0.0026 s(-1). Concentration-dependent NIR wavelength spectral scans demonstrated the spectrophotometric quantitation application of the phenolic dye-related compounds.
MONATSHEFTE FUR CHEMIE
(2023)
Article
Chemistry, Physical
Fevronia T. Andreou, Barbara Barylska, Zuzanna Ciesielska, Marek Szczerba, Arkadiusz Derkowski, Vassilis Gionis, Eirini Siranidi, Georgios D. Chryssikos
Summary: The selective self-assembly of small molecules in the interlayer of kaolinite was studied using near-infrared (NIR) spectroscopy and X-ray diffraction (XRD) to provide a complementary local structural description. The study found that the commonly employed XRD-based formalism tended to overestimate reaction progress, while the bonding of NMF in the interlayer was independent of reaction progress and kaolinite type. Both NIR and XRD recorded identical sigmoidal kinetics, and the isothermal NIR monitoring showed time-temperature superposable sigmoidals with an apparent activation energy of -60 kJ/mol for both samples.
APPLIED CLAY SCIENCE
(2021)
Article
Biology
Felipe Contreras-Briceno, Maximiliano Espinosa-Ramirez, Vicente Keim-Bagnara, Matias Carreno-Roman, Rafael Rodriguez-Villagra, Fernanda Villegas-Belmar, Gines Viscor, Luigi Gabrielli, Marcelo E. Andia, Oscar F. Araneda, Daniel E. Hurtado
Summary: The study aimed to evaluate if changes in oxygen saturation levels at intercostal muscles using NIRS could determine RCP during exercise in triathletes. The results showed a good agreement between NIRS and visual methods in determining RCP, indicating that changes in SmO2 m.intercostales measured by NIRS can effectively determine RCP in triathletes.
Article
Sport Sciences
Hee Jin Kim, Sujin Bae, Jung Hun Huh, Jea Woog Lee, Doug Hyun Han
Summary: The study aimed to investigate the neurophysiological mechanisms of aerobic exercise on cognitive enhancement through its effects on brain O2 consumption. Results showed that both moderate and high-intensity aerobic exercise positively influenced hemodynamic changes in the right and left dorsolateral prefrontal cortex. In response to the 2-back test, high-intensity exercise led to a more significant increase in oxygenated hemoglobin accumulation in the left DLPFC compared to moderate-intensity exercise.
INTERNATIONAL JOURNAL OF SPORTS MEDICINE
(2021)
Article
Chemistry, Analytical
Mika Ishigaki, Atsushi Ito, Risa Hara, Shun-ichi Miyazaki, Kodai Murayama, Keisuke Yoshikiyo, Tatsuyuki Yamamoto, Yukihiro Ozaki
Summary: This study successfully developed a method of monitoring the increasing number of amide bonds with the elongation of peptide chain length using NIR spectroscopy. By evaluating the dehydration occurring between amino acids and constructing a calibration model with a high determination coefficient, the study provided valuable insights for analyzing amide bonds in the NIR spectra of proteins, polyamino acids, polypeptides, and polyamides.
ANALYTICAL CHEMISTRY
(2021)
Review
Cell Biology
Joshua Denham
Summary: Telomerase plays a crucial role in maintaining genomic integrity by protecting and preserving telomeres. It has canonical functions in cancer and cell development while also exerting critical extra-telomeric functions. Activation of telomerase has therapeutic potential for aging-related diseases. Exercise can influence telomerase and holds promise for modulating its activity. Future research should focus on understanding the underlying cell signaling mechanisms.
Article
Agriculture, Multidisciplinary
Cristina Cecchini, Francesca Antonucci, Corrado Costa, Alessandra Marti, Paolo Menesatti
Summary: This study utilized near-infrared spectroscopy to evaluate the quality of durum wheat semolina, finding that protein content correlated best with spectral data and GlutoPeak indices also exhibited good correlation with spectral data. Better modeling efficiency was obtained using the low-cost swNIR technology.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2021)
Article
Physiology
Richie P. Goulding, Denise M. Roche, Sam N. Scott, Shunsaku Koga, Philip J. Weston, Simon Marwood
JOURNAL OF APPLIED PHYSIOLOGY
(2020)
Article
Physiology
Alan Chorley, Richard P. Bott, Simon Marwood, Kevin L. Lamb
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2020)
Article
Physiology
Richie P. Goulding, Dai Okushima, Simon Marwood, David C. Poole, Thomas J. Barstow, Tze-Huan Lei, Narihiko Kondo, Shunsaku Koga
JOURNAL OF APPLIED PHYSIOLOGY
(2020)
Article
Physiology
Richie P. Goulding, Simon Marwood, Dai Okushima, David C. Poole, Thomas J. Barstow, Tze-Huan Lei, Narihiko Kondo, Shunsaku Koga
JOURNAL OF APPLIED PHYSIOLOGY
(2020)
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
Psychology, Biological
Jake S. Ashton, James W. Roberts, Caroline J. Wakefield, Richard M. Page, Don P. M. MacLaren, Simon Marwood, James J. Malone
Summary: The study aimed to investigate the effects of MCT ingestion on cognitive function in young, healthy adults. Results showed that MCT intake significantly improved cognitive task performance after 2-3 weeks, with minimal difference between the 12 g and 18 g MCT/day groups, suggesting a possible dose-response threshold at 12 g MCT/day when supplementing over a short period.
PHYSIOLOGY & BEHAVIOR
(2021)
Article
Physiology
Daniel G. Sadler, Richard Draijer, Claire E. Stewart, Helen Jones, Simon Marwood, Dick H. J. Thijssen
Summary: The study showed that acute CF supplementation improved O2 uptake kinetics during moderate-intensity exercise in middle-aged adults, but had no effect during severe-intensity exercise.
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2021)
Article
Physiology
Richie P. Goulding, Simon Marwood, Tze-Huan Lei, Dai Okushima, David C. Poole, Thomas J. Barstow, Narihiko Kondo, Shunsaku Koga
Summary: This study found that the respiratory compensation point and muscle deoxygenation breakpoint did not occur at the same metabolic rate in different body positions and muscles. However, they may be related to breakpoints in total[heme] and muscle activity.
AMERICAN JOURNAL OF PHYSIOLOGY-REGULATORY INTEGRATIVE AND COMPARATIVE PHYSIOLOGY
(2021)
Article
Physiology
Richie P. Goulding, Denise M. Roche, Simon Marwood
Summary: The study aimed to determine if a contiguous ramp and all-out exercise test can accurately determine critical power (CP) during both upright and supine cycle exercise. The results showed that EP derived from this test was highly correlated with and not different from CP in both positions, but caution should be taken as they should not be used interchangeably due to wide limits of agreement.
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2021)
Review
Physiology
Richie P. Goulding, Harry B. Rossiter, Simon Marwood, Carrie Ferguson
Summary: The VO2 time constant plays a role in determining exercise tolerance by defining the power output associated with a critical threshold of intramuscular metabolite accumulation, while the VO2 slow component and its consequences determine performance limits.
EXERCISE AND SPORT SCIENCES REVIEWS
(2021)
Article
Physiology
Alan Chorley, Richard P. Bott, Simon Marwood, Kevin L. Lamb
Summary: The study found that the kinetics of W' reconstitution in trained cyclists were best described by a bi-exponential model with distinct fast and slow phases, each corresponding to different time constants. The amplitudes of the FC and SC remained unchanged with repeated bouts, with a slowing of W' reconstitution confined to an increase in the time constant of the slow component.
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2022)
Letter
Physiology
Richie P. Goulding, Harry B. Rossiter, Simon Marwood, Carrie Ferguson
EXERCISE AND SPORT SCIENCES REVIEWS
(2022)
Letter
Sport Sciences
Simon Marwood, Richie P. Goulding
SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS
(2022)
Letter
Physiology
Richie P. Goulding, Simon Marwood, Tze-Huan Lei, Dai Okushima, David C. Poole, Thomas J. Barstow, Narihiko Kondo, Shunsaku Koga
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2023)
Review
Sport Sciences
Richie P. Goulding, Simon Marwood
Summary: The physiological determinants of high-intensity exercise tolerance are important for elite human performance and morbidity, mortality, and disease in clinical settings. Critical power represents the threshold intensity above which metabolic homeostasis can no longer be maintained. Understanding its physiological determinants is essential for explaining the basis of critical power.