Results 71 to 80 of about 20,531 (184)

Effect of Transducer Orientation on Errors in Ultrasound Image-Based Measurements of Human Medial Gastrocnemius Muscle Fascicle Length and Pennation. [PDF]

open access: yesPLoS ONE, 2016
Ultrasound imaging is often used to measure muscle fascicle lengths and pennation angles in human muscles in vivo. Theoretically the most accurate measurements are made when the transducer is oriented so that the image plane aligns with muscle fascicles ...
Bart Bolsterlee   +2 more
doaj   +1 more source

Effect of fatigue loading on structure and functional behaviour of fascicles from energy-storing tendons [PDF]

open access: yes, 2014
Tendons can broadly be categorized according to their function: those that act purely to position the limb and those that have an additional function as energy stores.
Birch, Helen L   +4 more
core   +1 more source

Microstructural analysis of skeletal muscle force generation during aging. [PDF]

open access: yes, 2020
Human aging results in a progressive decline in the active force generation capability of skeletal muscle. While many factors related to the changes of morphological and structural properties in muscle fibers and the extracellular matrix (ECM) have been ...
Basava, Ramya R   +7 more
core   +1 more source

Decoupling of muscle‐tendon unit and fascicle velocity contributes to the in vivo stretch‐shortening cycle effect in the male human triceps surae muscle

open access: yesPhysiological Reports
During the shortening of stretch‐shortening cycles (SSCs), muscle force output is enhanced compared with pure shortening (SHO), referred to as the SSC‐effect.
Denis Holzer   +4 more
doaj   +1 more source

On the potential of using fractional-order systems to model the respiratory impedance [PDF]

open access: yes, 2006
This contribution provides an analysis of the human respiratory system in frequency domain by means of estimating the respiratory impedance. Further on, analysis of several models for human respiratory impedance is done, leading to the conclusion that a ...
De Keyser, Robain   +1 more
core   +1 more source

Passive Muscle-Tendon Unit Gearing is Joint Dependent in Human Medial Gastrocnemius

open access: yesFrontiers in Physiology, 2016
Skeletal muscles change length and develop force both passively and actively. Gearing allows muscle fibre length changes to be uncoupled from those of the whole muscle-tendon unit.
Emma F Hodson-Tole   +2 more
doaj   +1 more source

TimTrack: A drift-free algorithm for estimating geometric muscle features from ultrasound images.

open access: yesPLoS ONE, 2022
Ultrasound imaging is valuable for non-invasively estimating fascicle lengths and other features of pennate muscle, especially when performed computationally.
Tim J van der Zee, Arthur D Kuo
doaj   +1 more source

A review of the genus Megalographa Lafontaine and Poole (Lepidoptera: Noctuidae: Plusiinae) with the description of a new species from Costa Rica [PDF]

open access: yes, 2009
The classification of the genus Megalographa Lafontaine and Poole, 1991, is reviewed and the five known species diagnosed. The genus is essentially restricted to the New World, although one species M.
Lafontaine, J. Donald   +1 more
core   +2 more sources

In vivo gastrocnemius muscle fascicle length in children with and without diplegic cerebral palsy [PDF]

open access: yesDevelopmental Medicine & Child Neurology, 2007
The effect of spastic cerebral palsy on in vivo gastrocnemius muscle fascicle length is not clear. Similarity of fascicle lengths in children with diplegia and typically developing children, but shortening of fascicle lengths in the paretic legs of children with hemiplegia compared with the non‐paretic legs, are both reported.
Mohagheghi, Amir A.   +5 more
openaire   +3 more sources

Multiscale hamstring muscle adaptations following 9 weeks of eccentric training

open access: yesJournal of Sport and Health Science
Background: Eccentric training, such as Nordic hamstring exercise (NHE) training, is commonly used as a preventive measure for hamstring strains. Eccentric training is believed to induce lengthening of muscle fascicles and to be associated with the ...
Max H. Andrews   +7 more
doaj   +1 more source

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