Results 21 to 30 of about 336,000 (257)

Myocardial Architecture and Patient Variability in Clinical Patterns of Atrial Fibrillation [PDF]

open access: yes, 2016
Atrial fibrillation (AF) increases the risk of stroke by a factor of four to five and is the most common abnormal heart rhythm. The progression of AF with age, from short self-terminating episodes to persistence, varies between individuals and is poorly ...
Christensen, Kim   +2 more
core   +2 more sources

The Evolution of Appendicular Muscles During the Fin-to-Limb Transition: Possible Insights Through Studies of Soft Tissues, a Perspective

open access: yesFrontiers in Ecology and Evolution, 2021
The evolution of the appendages during the fin-to-limb transition has been extensively studied, yet the majority of studies focused on the skeleton and the fossil record.
Rohan Mansuit   +2 more
doaj   +1 more source

Do the relationships between hindlimb anatomy and sprint speed variation differ between sexes in Anolis lizards? [PDF]

open access: yes, 2019
The ability of an animal to run fast has important consequences on its survival capacity and overall fitness. Previous studies have documented how variation in the morphology of the limbs is related to variation in locomotor performance.
Gillet, Elisa   +5 more
core   +3 more sources

Correlation between age, muscle architecture, and muscle strength in children with Erb’s palsy

open access: yesBulletin of Faculty of Physical Therapy, 2021
Background Muscle weakness is a widespread problem in children with Erb’s palsy as it can cause changes in muscle architecture parameters, which can be detected by ultrasonography.
Ahmed Saad Awad   +2 more
doaj   +1 more source

Biological Determinants of Track and Field Throwing Performance

open access: yesJournal of Functional Morphology and Kinesiology, 2021
Track and field throwing performance is determined by a number of biomechanical and biological factors which are affected by long-term training. Although much of the research has focused on the role of biomechanical factors on track and field throwing ...
Nikolaos Zaras   +2 more
doaj   +1 more source

Automated Method for Tracking Human Muscle Architecture on Ultrasound Scans during Dynamic Tasks

open access: yesSensors, 2022
Existing approaches for automated tracking of fascicle length (FL) and pennation angle (PA) rely on the presence of a single, user-defined fascicle (feature tracking) or on the presence of a specific intensity pattern (feature detection) across all the ...
Saru Meena Ramu   +4 more
doaj   +1 more source

Cancellous bone and theropod dinosaur locomotion. Part II—a new approach to inferring posture and locomotor biomechanics in extinct tetrapod vertebrates [PDF]

open access: yes, 2018
This paper is the second of a three-part series that investigates the architecture of cancellous bone in the main hindlimb bones of theropod dinosaurs, and uses cancellous bone architectural patterns to infer locomotor biomechanics in extinct non-avian ...
Abourachid   +180 more
core   +3 more sources

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

open access: yesSports, 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   +3 more
doaj   +1 more source

Alterations in Muscle Architecture: A Review of the Relevance to Individuals After Limb Salvage Surgery for Bone Sarcoma

open access: yesFrontiers in Pediatrics, 2020
Osteosarcoma and Ewing's sarcoma are the most common primary bone malignancies affecting children and adolescents. Optimal treatment requires a combination of chemotherapy and/or radiation along with surgical removal when feasible.
Christa M. Nelson   +6 more
doaj   +1 more source

Variability of in vivo Sarcomere Length Measures in the Upper Limb Obtained With Second Harmonic Generation Microendoscopy

open access: yesFrontiers in Physiology, 2022
The lengths of a muscle’s sarcomeres are a primary determinant of its ability to contract and produce force. In addition, sarcomere length is a critical parameter that is required to make meaningful comparisons of both the force-generating and excursion ...
Amy N. Adkins   +12 more
doaj   +1 more source

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