Results 61 to 70 of about 6,782 (217)

Rethinking the physiological cross-sectional area of skeletal muscle reveals the mechanical advantage of pennation

Royal Society Open Science
The shape of skeletal muscle varies remarkably—with important implications for locomotor performance. In many muscles, the fibres are arranged at an angle relative to the tendons’ line of action, termed the pennation angle.
Robert Rockenfeller, Michael Günther, Christofer J. Clemente, Taylor J. M. Dick   +3 more
doaj   +1 more source

Gastrocnemius Medialis Architectural Properties at Rest and During Stretching in Female Athletes with Different Flexibility Training Background

Sports, 2019
Background: This study examined gastrocnemius medialis (GM) architectural properties and ankle joint range of motion (ROM) between female athletes with different flexibility training background.
Olyvia Donti, Ioli Panidis, Gerasimos Terzis, Gregory C. Bogdanis   +3 more
doaj   +1 more source

Comparative and functional anatomy of masticatory muscles and bite force in opossums (Didelphimorphia, Didelphidae)

The Anatomical Record, EarlyView.
We describe the functional anatomy of masticatory muscles in nine opossums, finding a generalized anatomical pattern with differences related to skull morphology. Variation in quantitative myological data and estimated bite force was mostly related to size, and the increase in bite force supports dietary diversification associated with size increase ...
Juann A. F. H. Abreu, Diego Astúa
wiley   +1 more source

3D anatomical atlas of the heads of male and female adult Chamaeleo calyptratus

The Anatomical Record, EarlyView.
The veiled chameleon is a model organism in reptile development research. Utilizing contrast‐enhanced microCT and deep learning segmentation models, we have generated the first digital atlases of the skull, nervous system, cranial muscles and hyolingual muscles.
Alice Leavey, Eloy Gálvez‐López, Anthony Herrel, Laura B. Porro   +3 more
wiley   +1 more source

Multi‐method analysis for the three‐dimensional reconstruction of muscle fascicles from DiceCT datasets

The Anatomical Record, EarlyView.
Abstract Muscle architecture is a major determinant of muscle performance and, in mammalian lineages, has been correlated with both feeding ecology and locomotor behaviors. Over the past decade, contrast‐enhanced micro‐CT (DiceCT) has emerged as an alternative to traditional dissection‐based measurement.
Aleksandra Ratkiewicz, Michael C. Granatosky, Cassidy E. Davis, Julia Molnar, Adam Hartstone‐Rose, Edwin Dickinson   +5 more
wiley   +1 more source

Morpho‐functional analyses of the jaw apparatus in the Blue‐and‐yellow Macaw (Ara ararauna, Psittaciformes, Aves): Adaptations to feeding behavior

The Anatomical Record, EarlyView.
Abstract Macaws are renowned for processing dry, mechanically resistant fruits, yet the species‐level anatomical and functional correlates of this performance remain incompletely resolved. We examined the feeding apparatus of the Blue‐and‐yellow Macaw (Ara ararauna) using an integrated approach that combines osteology, myology, and bite‐force estimates
Sérgio R. Posso, Ana Caroline M. Barbosa, Victor R. Caciatori   +2 more
wiley   +1 more source

Ultrasonographic evaluation of ulnar innervated muscles in ulnar neuropathy at the elbow

PM&R, EarlyView.
Abstract Background Quantitative muscle ultrasound (qMUS) provides morphological measurements that can support clinical observation of muscle atrophy and weakness. As the use of qMUS continues to expand, and its potential for broader implementation in neuromuscular evaluation grows, there is a clear need for further validation, particularly in ...
Emmanuel Ogalo, Lee Bauer, Christopher Doherty, Sean G. Bristol, Kristine M. Chapman, BC Neuromuscular Disease Group, Emily Krauss, Michael J. Berger   +7 more
wiley   +1 more source

Quadrate orientation and joint reaction force underwent correlated evolution during suchian evolution

Journal of Anatomy, EarlyView.
The quadrate is the cranial bone of the nonmammalian jaw joint. The quadrate has long been hypothesized to mirror the direction of joint reaction forces (JRF) during feeding. This study uses 3D biomechanical modeling to reveal a striking evolutionary link between quadrate orientation and JRF direction, unlocking new insights into the dynamic forces ...
Kaleb C. Sellers, Alec T. Wilken, Corrine R. Cranor, Kevin M. Middleton, Casey M. Holliday   +4 more
wiley   +1 more source

The individual and combined effects of obesity- and ageing-induced systemic inflammation on human skeletal muscle properties. [PDF]

, 2016
BACKGROUND/OBJECTIVES: The purpose of this study was to determine whether circulating pro-inflammatory cytokines, elevated with increased fat mass and ageing, were associated with muscle properties in young and older people with variable adiposity ...
A Li, A Saini, AA Miller, AE Koch, C I Morse, C Tsigos, CI Morse, CI Morse, CI Morse, CJ Lavie, CN Maganaris, CT De Souza, D J Tomlinson, DB Bartlett, DJ Tomlinson, DJ Tomlinson, E Guan, F Fath, F Landi, G Kewalramani, G L Onambélé, GL Onambele, GL Warren, GS Hotamisligil, H Degens, H Rahemi, HS Park, I Plaisance, J M Lord, J Wei, JJ Kehayias, JN Fain, K Hager, K Winwood, KM Beavers, M Saghizadeh, M Valle, MA Johnson, MA Schrager, MS Hayden, MT Sharabiani, N Al-Shanti, NA Maffiuletti, ND Reeves, P Hampson, R M Erskine, RN Baumgartner, RN Baumgartner, RS Bystry, SE Kahn, SK Fried, SP Weisberg, T Fukunaga, TN Hilton, V Mohamed-Ali, VT Samuel, WMA, WP Tseng, Y Rolland   +58 more
core   +2 more sources

Architecture of lower leg muscles in children: Reference curves and potential mechanisms of growth

Journal of Anatomy, EarlyView.
Muscle architecture (physiological cross‐sectional area, fascicle lengths and pennation angle) was measured from multimodal MRI scans of the lower legs of 197 children aged ≤15 years. We showed that lower leg muscle volumes (product of PCSA and fascicle length) increase primarily through increases in PCSA (transverse growth) rather than increases in ...
Brian V. Y. Chow, Suzanne Davies, Catherine Morgan, Caroline D. Rae, David I. Warton, Iona Novak, Ann Lancaster, Gordana C. Popovic, Rodrigo R. N. Rizzo, Claudia Y. Rizzo, Iain K. Ball, Robert D. Herbert, Bart Bolsterlee   +12 more
wiley   +1 more source