A clustering-based method for estimating pennation angle from B-mode ultrasound images [PDF]
Wearable Technologies, 2023 B-mode ultrasound (US) is often used to noninvasively measure skeletal muscle architecture, which contains human intent information. Extracted features from B-mode images can help improve closed-loop human–robotic interaction control when using ...
Xuefeng Bao +4 more
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Impact of contraction intensity and ankle joint angle on calf muscle fascicle length and pennation angle during isometric and dynamic contractions [PDF]
Scientific ReportsDuring muscle contraction, not only are the fascicles shortening but also the pennation angle changes, which leads to a faster contraction of the muscle than of its fascicles. This phenomenon is called muscle gearing, and it has a direct influence on the
Corinna Coenning +3 more
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Architectural Ultrasound Pennation Angle Measurement of Lumbar Multifidus Muscles: A Reliability Study. [PDF]
J Clin Med, 2022 The pennation angle has been shown to be a relevant parameter of muscle architecture. This parameter has not previously been measured in the lumbar multifidus musculature, and it is for this reason that it has been considered of great interest to establish an assessment protocol to generate new lines of research in the future.
Monsalve-Vicente C +7 more
europepmc +7 more sources
The Effect of Self-Myofascial Release on the Pennation Angle of the Vastus Medialis Oblique and the Vastus Lateralis in Athletic Male Individuals: An Ultrasound Investigation [PDF]
International Journal of Sports Physical Therapy, 2022 # Background Maintenance of patellar stability requires a balance between the vastus medialis oblique (VMO) and the vastus lateralis (VL). The imbalance between these muscles is thought to be implicated in the etiology of patellofemoral pain (PFP ...
Queenie Mae Torrente +3 more
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A computational model to investigate the effect of pennation angle on surface electromyogram of Tibialis Anterior. [PDF]
PLoS ONE, 2017 This study has described and experimentally validated the differential electrodes surface electromyography (sEMG) model for tibialis anterior muscles during isometric contraction. This model has investigated the effect of pennation angle on the simulated
Diptasree Maitra Ghosh +4 more
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The influence of muscle pennation angle and cross-sectional area on contact forces in the ankle joint. [PDF]
J Strain Anal Eng Des, 2017 Data about a muscle’s fibre pennation angle and physiological cross-sectional area are used in musculoskeletal modelling to estimate muscle forces, which are used to calculate joint contact forces.
Sopher RS +3 more
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Changes in muscular pennation angle after crenotherapy. [PDF]
Muscles Ligaments Tendons J, 2013 Muscular architecture involves the organization of fibres in the muscle and is one of the most important factors of muscular function. Studies have demonstrated an association with muscular architecture and contraction, with an increase of the pennation angle in muscles.
Brancaccio P +3 more
europepmc +6 more sources
Dynamic measurement of pennation angle of gastrocnemius muscles during contractions based on ultrasound imaging [PDF]
BioMedical Engineering OnLine, 2012 Background Muscle fascicle pennation angle (PA) is an important parameter related to musculoskeletal functions, and ultrasound imaging has been widely used for measuring PA, but manually and frame by frame in most cases.
Zhou Yongjin +3 more
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A new possible marker: can pennation angle defined by ultrasound predict the frailty? [PDF]
Aging Clin Exp ResAbstract Background Frailty indicates older people who are vulnerable to stressors. The relation between ultrasonographic parameters of muscle and frailty among older people has yet to be investigated. Aims The aim of the study is to investigate the relationship between ...
Yurumez B +13 more
europepmc +3 more sources
Effect of standard- versus high-protein enteral feeding on rectus femoris muscle mass in mechanically ventilated traumatic brain injury patients: a prospective randomized study in Egypt and the United States [PDF]
Acute and Critical CareBackground Critically ill patients with muscle wasting experience prolonged intensive care unit (ICU) stays, delayed weaning, and higher mortality. Trauma-induced stress disrupts protein metabolism, leading to immunosuppression and muscle loss.
Hanan Elkalawy +4 more
doaj +2 more sources