Results 131 to 140 of about 20,755 (245)

Significance of fiber orientation in the interosseous sacroiliac ligament: An anatomical and histological study of the implications of its mechanical adaptation

Journal of Anatomy, EarlyView.
Fiber structure of the interosseous sacroiliac ligament exhibits a distinct organization, with predominantly vertical fibers in the inferior region and predominantly horizontal fibers in the superior region. These fiber alignment patterns likely reflect mechanical adaptation to the sacroiliac joint motion and may support imaging‐based evaluation of its
Masahiro Tsutsumi, Akimoto Nimura, Hajime Utsunomiya, Takuya Ibara, Shintarou Kudo, Keiichi Akita   +5 more
wiley   +1 more source

Transverse Strains in Muscle Fascicles during Voluntary Contraction: A 2D Frequency Decomposition of B-Mode Ultrasound Images

International Journal of Biomedical Imaging, 2014
When skeletal muscle fibres shorten, they must increase in their transverse dimensions in order to maintain a constant volume. In pennate muscle, this transverse expansion results in the fibres rotating to greater pennation angle, with a consequent ...
James M. Wakeling, Avleen Randhawa
doaj   +1 more source

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

MRI‐based, 3D analysis of Achilles tendon longitudinal strain under passive loading reveals limitations in conventional 2D measurement

Journal of Anatomy, EarlyView.
Graphical overview of 2D and 3D length measurements of the free Achilles tendon. The figure also illustrates how the typical distal morphology of the soleus muscle affects 2D measurement. Abstract Quantifying strain in the free Achilles tendon (ATF) is essential for understanding its mechanical function, yet existing in vivo studies report inconsistent
Dongyu Deng, Hiroto Shiotani, Yasuo Kawakami   +2 more
wiley   +1 more source

Alterations in biceps femoris long head fascicle length, Eccentric hamstring strength qualities and single-leg hop distance throughout the ninety minutes of TSAFT90 simulated football match. [PDF]

PLoS One, 2022
Yagiz G, Dayala VK, Williams K, Owen JA, Kubis HP.   +4 more
europepmc   +1 more source

Hoffmann's two‐toed sloth II: Muscle architectural properties in the thoracic limb of Choloepus (Pilosa: Xenarthra)

Journal of Anatomy, EarlyView.
Two‐toed sloths use their thoracic limbs for more frequent and greater suspensory support than three‐toed sloths and have muscle architectural properties consistent with stability of the pectoral girdle, enhanced flexor force/torque applied at the shoulder and elbow joints, and grip on the support as indicated by their myology. Abstract Two‐toed sloths
C. S. Tucker, A. M. Mossor, K. B. Spainhower, J. A. Avey‐Arroyo, M. T. Butcher   +4 more
wiley   +1 more source

Machine learning to extract muscle fascicle length changes from dynamic ultrasound images in real-time. [PDF]

PLoS One, 2021
Rosa LG, Zia JS, Inan OT, Sawicki GS.
europepmc   +1 more source

Hoffmann's two‐toed sloth I: Complete myology in the thoracic limb of Choloepus (Pilosa: Xenarthra)

Journal of Anatomy, EarlyView.
Two‐toed sloths use their thoracic limbs for more frequent and prolonged suspensory support than three‐toed sloths and accordingly demonstrate myological traits consistent with stability of the pectoral girdle, enhanced flexor force/torque applied at the elbow joint, and grip on the support.
C. S. Tucker, A. M. Mossor, J. A. Avey‐Arroyo, M. T. Butcher   +3 more
wiley   +1 more source

Modulation of stretch activation influences the stretch‐shortening cycle effect in in vivo human knee extensors

Physiological Reports
This study investigated the effects of progressively increasing voluntary activation during the stretch phase on force and work production in the stretch‐shortening cycle (SSC) of human knee extensors.
Iseul Jo, Wolfgang Seiberl, Hae‐Dong Lee   +2 more
doaj   +1 more source

Scratching beneath the surface: Quantification of muscle architecture and myosin heavy chain content in the forelimbs of black‐tailed prairie dogs (Cynomys, Rodentia)

Journal of Anatomy, EarlyView.
Black‐tailed prairie dogs are highly social ground squirrels that excavate communal burrow systems, most often in medium‐textured soils. Their forelimbs demonstrate morphofunctional trade‐offs for scratch‐digging and terrestrial ecology, including well‐developed and fast‐contracting proximal musculature with large mechanical advantage paired with ...
Luke A. Scheetz, Carter A. Burnett, Benjamin R. Kimble, David A. Eads, Michael T. Butcher   +4 more
wiley   +1 more source