Results 51 to 60 of about 51,654 (310)

Poststretch isometric contractions of the hamstrings: Just a brief stretch to achieve supramaximal isometric force [PDF]

, 2021
Hamstring strain injuries are common in sport. Supramaximal eccentric or high-intensity isometric contractions are favored in hamstring strain injury prevention. The effect of combining these contraction modes in such prevention programs as a poststretch
Whitting, John William, Broadbent, Suzanne, Chapman, Neil, Meir, Rudi, Crowley-McHattan, Zachary   +4 more
core   +1 more source

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

Advanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena, J. Terence Blaskovits, Kun‐Han Lin, Denis Andrienko   +3 more
wiley   +1 more source

Investigation of the interaction between corticomuscular coherence, motor precision and perceived difficulty in wrist flexion and extension [PDF]

, 2013
Includes abstract.Includes bibliographical references.Recently, behavioural (motor precision) differences were reported between isometric wrist flexion and extension.
Divekar, Nikhil Vishwas
core  

Correlation between architectural variables and torque in the erector spinae muscle during maximal isometric contraction [PDF]

, 2014
This study analysed whether a significant relationship exists between the torque and muscle thickness and pennation angle of the erector spinae muscle during a maximal isometric lumbar extension with the lumbar spine in neutral position. This was a cross-
Cuesta-Vargas, Antonio, González-Sánchez, Manuel   +1 more
core   +1 more source

Fabrication of Fibers With Complex Features Using Thermal Drawing of 3D‐Printed Preforms

Advanced Materials Technologies, EarlyView.
3D printing enables rapid fabrication of macroscale polymer preforms with complex geometries. Thermal drawing then scales these structures into long fibers while preserving micron‐scale cross‐sectional features. This workflow provides a fast, low‐cost route to functional fibers with tailored geometries and material combinations for catheter, robotic ...
Ali Anil Demircali, Jinshi Zhao, Ayhan Aktas, Mohamed E. M. K. Abdelaziz, Burak Temelkuran   +4 more
wiley   +1 more source

Decrease in cerebral blood flow during maximal handgrip isometric contraction - a brief report [PDF]

, 2021
Findings of the studies on the relationship between isometric handgrip contraction and changes in cerebral blood flow (CBF) are contradictory. The aim of the study was to evaluate CBF changes during one minute of a maximal handgrip isometric contraction.
Žvan, Bojana, Štuhec, Stanko, Čoh, Milan, Matković, Branka, Zaletel, Marjan, Hadžić, Vedran, Ružić, Lana   +6 more
core   +2 more sources

Multiobjective Codesign Optimization of a Planar Pneumatic Artificial Muscle‐Based Snake‐Like Robot for Enhanced Agility and Energy Efficiency

Advanced Robotics Research, EarlyView.
A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley   +1 more source

Isometric Dilations of Commuting Contractions and Brehmer Positivity

Complex Analysis and Operator Theory, 2022
It is well-known that an $n$-tuple $(n\ge 3)$ of commuting contractions does not posses an isometric dilation, in general. Considering a class of $n$-tuple of commuting contractions satisfying certain positivity assumption, we construct their isometric dilations and consequently establish their von Neumann inequality.
Barik, Sibaprasad, Das, B. Krishna
openaire   +3 more sources

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Chronic low back pain in patients with systemic lupus erythematosus: prevalence and predictors of back muscle strength and its correlation with disability

Revista Brasileira de Reumatologia
Objective: To determine the prevalence of Chronic Low Back Pain and predictors of Back Muscle Strength in patients with Systemic Lupus Erythematosus. Methods: Cross-sectional study.
Raíssa Sudré Cezarino, Jefferson Rosa Cardoso, Kedma Neves Rodrigues, Yasmin Santana Magalhães, Talita Yokoy de Souza, Lícia Maria Henrique da Mota, Ana Clara Bonini-Rocha, Joseph McVeigh, Wagner Rodrigues Martins   +8 more
doaj   +1 more source