Results 121 to 130 of about 874,825 (155)

Pennation angles of the intrinsic muscles of the foot

Journal of Biomechanics, 2001
As mathematical models of the musculoskeletal system become increasingly detailed and precise, they require more accurate information about the architectural parameters of the individual muscles. These muscles are typically represented as Hill-type models, which require data on fiber length, physiological cross-sectional area (PCSA) and pennation angle.
W R, Ledoux, B E, Hirsch, T, Church, M, Caunin   +3 more
openaire   +2 more sources

The Relationship between SEMG and Change in Pennation Angle of Brachialis

2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007
Surface Electromyography (SEMG) signals have been widely used for the functional assessment of muscles. On the other hand, sonography has been commonly used to detect the morphological information of human muscles in both static and dynamic conditions.
Jun, Shi, Yongping, Zheng, Zhuangzhi, Yan   +2 more
openaire   +2 more sources

Short Communication: Pennation Angle Variability in Human Muscle

Journal of Applied Biomechanics, 2014
The pennated arrangement of muscle fibers has important implications for muscle function in vivo, but complex arrangement of muscle fascicles in whole muscle raises the question whether the arrangement of fascicles produce variations in pennation angle throughout muscle.
Benjamin W, Infantolino, John H, Challis
openaire   +2 more sources

Automatic Extraction of Muscle Fascicle Pennation Angle from Raw Ultrasound Data

2022 IEEE Sensors Applications Symposium (SAS), 2022
Compact, wearable, wireless ultrasound (US) sensing systems are promising devices for the observation of human muscle dynamics, offering low power, non-invasive continuous monitoring of contracting muscles. Plane wave imaging is an ideal imaging modality to meet the high frame rate requirements of fast contracting muscles.
Soley Hafthorsdottir, Sergei Vostrikov, Andrea Cossettini, Michael Rieder, Christoph Leitner, Michele Magno, Luca Benini   +6 more
openaire   +2 more sources

Automatic pennation angle measurement in musculoskeletal ultrasound image

2012 International Conference on Computerized Healthcare (ICCH), 2012
Pennation angle is the most often adopted sonomyography (SMG) measurement to quantify muscle activities under different contractions because of its independence on the position and the field of view in B-mode imaging. In this paper, a new paradigm for automatic pennation angle estimation was described, which used some unique features of musculoskeletal
Guangquan Zhou, Yong-Ping Zheng
openaire   +2 more sources

Changes in pennation angle in rotator cuff muscles with torn tendons

Journal of Orthopaedic Science, 2012
Although several authors have reported on the pennation angles of intact rotator cuff muscles, the relationship between their alteration and rotator cuff tears has not been fully clarified. The purpose of this study was to measure the pennation angles of human cadaveric rotator cuff muscles with torn tendons.Twenty embalmed cadaveric shoulders were ...
Jianlin, Zuo, Hirotaka, Sano, Eiji, Itoi
openaire   +2 more sources

The Effects Of 10-weeks Of Continuous Cycling On Pennation Angle Of The Vastus Lateralis

Medicine & Science in Sports & Exercise, 2022
Alex Olmos1, Stephanie Sontag1, Sergio Perez1, Sunggun Jeon1, Shawn Allen1, Jeremy Lippman2, Michael Trevino1 1Oklahoma State University, Stillwater, Oklahoma; 2Univeristy of Kansas, Lawrence, Kansas PURPOSE: To examine if 10-weeks of continuous cycling training altered pennation angle (PA) of the vastus lateralis (VL) in sedentary males and females ...
Olmos, A, Sontag, S, Perez, S, Jeon, S, Allen, S, Lippman, J, Trevino, M   +6 more
openaire   +1 more source

Muscle-fiber pennation angles are greater in hypertrophied than in normal muscles

Journal of Applied Physiology, 1993
Muscle-fiber pennation angles were measured in vivo with the use of ultrasonography to investigate the relationship between fiber pennation and muscle size for 32 male subjects (from untrained subjects to highly trained bodybuilders). From the image of a B-mode ultrasonogram, fiber pennation angles and thickness of triceps brachii were determined, the
Y, Kawakami, T, Abe, T, Fukunaga
openaire   +2 more sources

A three-dimensional approach to pennation angle estimation for human skeletal muscle

Computer Methods in Biomechanics and Biomedical Engineering, 2014
Pennation angle (PA) is an important property of human skeletal muscle that plays a significant role in determining the force contribution of fascicles to skeletal movement. Two-dimensional (2D) ultrasonography is the most common approach to measure PA.
Dongwoon, Lee, Zhi, Li, Qazi Zain, Sohail, Ken, Jackson, Eugene, Fiume, Anne, Agur   +5 more
openaire   +2 more sources

A New Approach to Estimation of Muscle Pennation Angle in Ultrasound Image

2010 4th International Conference on Bioinformatics and Biomedical Engineering, 2010
Ultrasound imaging has been an effective tool for measuring the muscle architectures, including the pennation angle. In this work, we proposed a new approach combining wavelet transform (WT) and Hough transform (HT) to detect the straight line-shaped patterns of aponeurosis, fascicle or bone, and then to quantify the pennation angles in ultrasound ...
Li-jin Huang, Jun Shi
openaire   +1 more source