Article
Neurosciences
Benjamin I. Binder-Markey, Lomas S. Persad, Alexander Y. Shin, William J. Litchy, Kenton R. Kaufman, Richard L. Lieber
Summary: By transplanting the gracilis muscle from the thigh to the arm and directly measuring its properties and function, this study validated the relationship between isometric contractile properties and whole muscle properties in the human body.
JOURNAL OF PHYSIOLOGY-LONDON
(2023)
Review
Physiology
Jacques Duchateau, Roger M. Enoka
Summary: The purpose of this review was to compare the distribution of motor unit properties across human muscles of different sizes and recruitment ranges. Despite innervation number being the most influential factor in this distribution, the organization of motor unit pools and discharge rates are relatively similar between hand muscles and lower leg muscles.
JOURNAL OF APPLIED PHYSIOLOGY
(2022)
Article
Neurosciences
Kohei Watanabe, Ales Holobar
Summary: The study found that ingested quercetin can increase the activation of relatively higher recruitment threshold motor units, mitigate the reduction in muscle contractile properties, and inhibit the activation of relatively lower recruitment threshold motor units.
EXPERIMENTAL BRAIN RESEARCH
(2021)
Article
Sport Sciences
Patrick Rodrigues, Lucas B. R. Orssatto, Gabriel Siqueira Trajano, Lee Wharton, Geoffrey M. Minett
Summary: The purpose of this study was to investigate the effects of 42 degrees C hot-water immersion on muscle contraction function and motor unit discharge rates. The results showed that hot-water immersion led to increased core and muscle temperature, decreased maximal voluntary contraction torque and voluntary activation level, and had no significant effect on muscle electromyography activity and peak twitch torque. Additionally, passive muscle temperature increase reduced the required motor unit discharge rates to achieve the same torque.
SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS
(2023)
Article
Physiology
Alessandro Cudicio, Eduardo Martinez-Valdes, Marta Cogliati, Claudio Orizio, Francesco Negro
Summary: The study investigated the influence of muscle-tendon length on motor unit (MU) characteristics during voluntary contractions. The findings suggested that at optimal muscle lengths, there were higher variations in MU twitch torque, explaining the greater force-generation capacity of muscles in this position. This result was confirmed by deconvolution of electrically evoked contractions at different stimulation frequencies and muscle-tendon lengths.
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2022)
Article
Physiology
Ya Zong, Zhiyuan Lu, Maoqi Chen, Lianfu Deng, Qin Xie, Ping Zhou
Summary: This study estimated the motor unit number of the second lumbrical muscle in the human hand, with findings suggesting a relatively low motor unit number which could be valuable for investigating motor units, especially during high-level muscle activation.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Biology
Letizia Zullo, Alessio Di Clemente, Federica Maiole
Summary: Octopus arms exhibit different roles in arm movements, with longitudinal muscles being used for precise actions and transverse muscles for intense and sustained actions. The structure and morphology of the arm muscles also contribute to their functional specialization. The octopus arm can be seen as a reservoir of possibilities for different types of motion.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Antonio Stecco, Federico Giordani, Caterina Fede, Carmelo Pirri, Raffaele De Caro, Carla Stecco
Summary: Recent research has shown a strong interaction between muscle fibers and intramuscular connective tissue, as well as between muscles and fasciae, challenging the idea that muscles are the sole organizers of movement. The innervation and vascularization of muscles are also connected with intramuscular connective tissue. Luigi Stecco introduced the term "myofascial unit" to describe the anatomical and functional relationship between fascia, muscle, and accessory elements. This narrative review aims to explore the scientific evidence supporting the concept of the myofascial unit as the fundamental element for peripheral motor control.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Physiology
Everett C. Minchew, Nicholas C. Williamson, Andrew T. Readyoff, Joseph M. McClung, Espen E. Spangenburg
Summary: Assessing contractile function of skeletal muscle in murine models is commonly employed in laboratory research. This study aimed to characterize the functional properties of hindlimb muscles in different mouse strains. The data reveals both unique differences and similarities between the muscles in different genetic backgrounds. Additionally, the strain of the mouse could potentially influence the measured biological outcome and interact with any genetic manipulation or therapeutic intervention. Therefore, careful consideration of the genetic background and documentation of the strain of mouse is critical in experimental design and publication.
FRONTIERS IN PHYSIOLOGY
(2022)
Article
Sport Sciences
Yi-Chung Lin, Marcus G. Pandy
Summary: This study combined a full-body musculoskeletal model with dynamic optimization theory to predict the biomechanics of maximum-speed sprinting and evaluate the effects of changes in muscle-tendon properties on sprint performance. The results showed that sprint performance was most sensitive to changes in muscle strength and least affected by changes in tendon compliance. Additionally, muscle fascicle length had a greater impact on sprint performance compared to muscle intrinsic maximum shortening velocity.
MEDICINE & SCIENCE IN SPORTS & EXERCISE
(2022)
Article
Neurosciences
Alessandro Del Vecchio, Carina Marconi Germer, Thomas M. Kinfe, Stefano Nuccio, Francois Hug, Bjoern Eskofier, Dario Farina, Roger M. Enoka
Summary: The purpose of this study was to identify the low-dimensional latent components, called motor unit modes, underlying the discharge rates of motor units in knee extensors and hand muscles during submaximal isometric contractions. Factor analysis identified two independent motor unit modes that captured most of the covariance of the motor unit discharge rates. The distribution of motor unit modes was different between hand and knee muscles, with a continuous distribution found for the knee muscles.
JOURNAL OF NEUROSCIENCE
(2023)
Article
Sport Sciences
Martino V. Franchi, Fabio Sarto, Bostian Simunic, Rado Pisot, Marco V. Narici
Summary: During a short period of inactivity, the hamstring muscle group showed a moderate reduction in muscle dimensions, with changes in the fascicle length of the biceps femoris long head (BFlh) and alterations in BFLh contractile properties.
MEDICINE & SCIENCE IN SPORTS & EXERCISE
(2022)
Article
Physiology
Matthew J. Fogarty, Gary C. Sieck
Summary: The study focused on the mechanical and fatigue properties of tongue muscles in 6-month-old Fischer 344 rats, finding that different tongue muscles exhibit variations in strength and fatigue, with the genioglossus muscle being more fatigue resistant. This research provides insights into the force, fatigue, and fiber type-specific properties of individual tongue musculature, offering a useful muscular readout for conditions involving motor control dysfunction or tongue weakness.
JOURNAL OF APPLIED PHYSIOLOGY
(2021)
Article
Biology
Arnault H. Caillet, Andrew T. M. Phillips, Dario Farina, Luca Modenese
Summary: The study focuses on deriving mathematical relationships between MN electrophysiological and anatomical properties by reprocessing data from 40 experimental studies in adult cat, rat, and mouse MN preparations. The validated mathematical framework provides a convenient tool for neuroscientists and experimenters. By using this framework, modelers can build profiles of inter-consistent MN-specific properties to scale pools of MN models, enhancing the accuracy and interpretability of simulations.
Article
Neurosciences
Lydia P. Kudina, Regina E. Andreeva
Summary: This study investigated the F-wave properties of single firing motor units in healthy humans and found that there was no association between the occurrence of F-waves and the firing behavior of motoneurons. Contrary to expectations, F-waves did not originate from the motoneuronal soma and could not provide evidence for motoneuron firing behavior.
JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY
(2022)
Article
Physiology
Elaine Murphy, Joel Rocha, Norita Gildea, Simon Green, Mikel Egana
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY
(2018)
Editorial Material
Physiology
Simon Green, Christopher Askew
JOURNAL OF APPLIED PHYSIOLOGY
(2018)
Article
Multidisciplinary Sciences
E. Penelope Holland, Rachelle N. Binny, Alex James
Letter
Physiology
Christopher D. Askew, Simon Green
JOURNAL OF APPLIED PHYSIOLOGY
(2019)
Article
Neurosciences
Daniel Boulton, Simon Green, Vaughan G. Macefield, Chloe E. Taylor
FRONTIERS IN NEUROSCIENCE
(2019)
Article
Physiology
Joel Rocha, Norita Gildea, Donal O'Shea, Simon Green, Mikel Egana
JOURNAL OF APPLIED PHYSIOLOGY
(2019)
Article
Physiology
Norita Gildea, Joel Rocha, Adam McDermott, Donal O'Shea, Simon Green, Mikel Egana
RESPIRATORY PHYSIOLOGY & NEUROBIOLOGY
(2019)
Letter
Physiology
Joel Rocha, Norita Gildea, Donal O'Shea, Simon Green, Mikel Egana
JOURNAL OF APPLIED PHYSIOLOGY
(2020)
Editorial Material
Respiratory System
Simon Green, Deidre Stuart
Review
Ecology
Giorgia Vattiato, Rachelle N. Binny, Sam J. Davidson, Andrea E. Byrom, Dean P. Anderson, Michael J. Plank, Joanna K. Carpenter, Alex James
Summary: Management of invasive mammal pests is crucial for the conservation of New Zealand's native flora and fauna. This paper reviews studies on spatial detectability parameters of ten invasive mammal pests in New Zealand, considering factors such as habitat, season, and surveillance device type. The findings highlight the variation in detectability under different conditions and identify knowledge gaps for future research.
NEW ZEALAND JOURNAL OF ECOLOGY
(2023)
Review
Cardiac & Cardiovascular Systems
Simon Green, Deidre Stuart
Summary: Oxygen acts as a pulmonary vasodilator in patients with pulmonary arterial hypertension (PAH), potentially through alveolar and blood-borne mechanisms, regardless of arterial oxygen levels. Current clinical guidelines and practices related to oxygen therapy for PAH patients need to be reevaluated, as recent evidence challenges the previous view that its benefits arise only from correcting hypoxemia. Further research is needed to better understand the therapeutic potential of oxygen in PAH.
EUROPEAN JOURNAL OF PREVENTIVE CARDIOLOGY
(2021)
Article
Cardiac & Cardiovascular Systems
Simon Green, Deidre Stuart
PULMONARY CIRCULATION
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Yi Guo, Simon Green, Laurence Park, Lauren Rispen
2018 INTERNATIONAL CONFERENCE ON DIGITAL IMAGE COMPUTING: TECHNIQUES AND APPLICATIONS (DICTA)
(2018)
Article
Physiology
Simon Green, Eamon O'Connor, Catherine Kiely, Donal O'Shea, Mikel Egana
PHYSIOLOGICAL REPORTS
(2018)
Article
Education & Educational Research
Simon Green, Susan McGlynn, Deidre Stuart, Paul Fahey, Jim Pettigrew, Peter Clothier
INTERNATIONAL JOURNAL OF MATHEMATICAL EDUCATION IN SCIENCE AND TECHNOLOGY
(2018)