Results 1 to 10 of about 9,085 (238)

Information from dynamic length changes improves reliability of static ultrasound fascicle length measurements [PDF]

PeerJ, 2017
Purpose Various strategies for improving reliability of fascicle identification on ultrasound images are used in practice, yet these strategies are untested for effectiveness.
Jeroen Aeles, Glen A. Lichtwark, Sietske Lenchant, Liesbeth Vanlommel, Tijs Delabastita, Benedicte Vanwanseele   +5 more
doaj   +12 more sources

Pressure based MRI-compatible muscle fascicle length and joint angle estimation [PDF]

Journal of NeuroEngineering and Rehabilitation, 2020
Background Functional magnetic resonance imaging (fMRI) provides critical information about the neurophysiology of the central nervous systems (CNS), posing clinical significance for the understanding of neuropathologies and advancement of rehabilitation.
Hyungeun Song, Erica Israel, Shriya Srinivasan, Hugh Herr   +3 more
doaj   +6 more sources

Muscle spindles in human tibialis anterior encode muscle fascicle length changes

Journal of Neurophysiology, 2017
Muscle spindles provide exquisitely sensitive proprioceptive information regarding joint position and movement. Through passively driven length changes in the muscle-tendon unit (MTU), muscle spindles detect joint rotations because of their in-parallel mechanical linkage to muscle fascicles.
James Day, Leah R Bent, Ingvars Birznieks   +2 more
exaly   +9 more sources

Comparison between Short, Medium, and Long Fields of View in Estimating Bicep Femoris Fascicle Length [PDF]

Muscles
Measuring the bicep femoris long head fascicle length via the use of diagnostic ultrasound has become common practice within elite sport, using single images of between 4 and 6 cm.
Nicholas J. Ripley, Paul Comfort, John McMahon   +2 more
doaj   +6 more sources

The effects of soleus fascicle length on muscle fatigability [PDF]

PeerJ
Background Age-related deficits in Achilles tendon stiffness have been linked to shorter calf muscle operating lengths. These shorter lengths have the potential to precipitate higher requisite excitations and thereby an earlier onset of local ...
Anh D. Nguyen, Aubrey Gray, Gregory Sawicki, Jason R. Franz   +3 more
doaj   +5 more sources

Effect of plyometric training on the fascicle length of the gastrocnemius medialis muscle [PDF]

Journal of Physical Therapy Science, 2020
[Purpose] The present study aimed to determine the effects of eccentric calf raise exercise, which has the characteristics of plyometric training, on the fascicle length and muscle thickness of the gastrocnemius medialis muscle and range of motion of the ankle using ultrasonography. [Participants and Methods] Twenty-one healthy volunteers were randomly
Shintarou Kudo
exaly   +5 more sources

Automatic tracking of medial gastrocnemius fascicle length during human locomotion

Journal of Applied Physiology, 2011
During human locomotion lower extremity muscle-tendon units undergo cyclic length changes that were previously assumed to be representative of muscle fascicle length changes. Measurements in cats and humans have since revealed that muscle fascicle length changes can be uncoupled from those of the muscle-tendon unit.
Neil J Cronin, Christopher P Carty, Rod S Barrett   +2 more
exaly   +9 more sources

High Velocity Passive Stretching Mimics Eccentric Exercise in Cerebral Palsy and May Be Used to Increase Spastic Muscle Fascicle Length [PDF]

Bioengineering
Muscle fascicles are shorter and stiffer than normal in spastic Cerebral Palsy (CP). Increasing fascicle length (FL) has been attempted in CP, the outcomes of which have been unsatisfactory.
Jessica F. Davis, Tahir Khan, Matt Thornton, Neil D. Reeves, Mara DeLuca, Amir A. Mohagheghi   +5 more
doaj   +4 more sources

Curvature of gastrocnemius muscle fascicles as function of muscle–tendon complex length and contraction in humans [PDF]

Physiological Reports, 2023
It has been shown that muscle fascicle curvature increases with increasing contraction level and decreasing muscle–tendon complex length. The analyses were done with limited examination windows concerning contraction level, muscle–tendon complex length ...
Jule Heieis, Jonas Böcker, Olfa D'Angelo, Uwe Mittag, Kirsten Albracht, Eckhard Schönau, Andreas Meyer, Thomas Voigtmann, Jörn Rittweger   +8 more
doaj   +5 more sources

Relationship Between Sprint Performance and Muscle Fascicle Length in Female Sprinters.

Journal of Physiological Anthropology and Applied Human Science, 2001
The purpose of this study was to investigate the relationship between sprint performance and architectural characteristics of leg muscles in 26 female 100-m sprinters. Pennation angle and muscle thickness of the vastus lateralis (VL) and gastrocnemius medialis (GM) and lateralis (GL) muscles were measured by B-mode ultrasonography, and fascicle length ...
Takashi Abe, Senshi Fukashiro
exaly   +4 more sources