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17 Results Found

  • Article
  • Open Access
1,063 Views
13 Pages

Clinical Validation of a Computed Tomography Image-Based Machine Learning Model for Segmentation and Quantification of Shoulder Muscles

  • Hamidreza Rajabzadeh-Oghaz,
  • Josie Elwell,
  • Bradley Schoch,
  • William Aibinder,
  • Bruno Gobbato,
  • Daniel Wessell,
  • Vikas Kumar and
  • Christopher P. Roche

14 July 2025

Introduction: We developed a computed tomography (CT)-based tool designed for automated segmentation of deltoid muscles, enabling quantification of radiomic features and muscle fatty infiltration. Prior to use in a clinical setting, this machine lear...

  • Article
  • Open Access
11 Citations
3,686 Views
34 Pages

Impact of Deltoid Computer Tomography Image Data on the Accuracy of Machine Learning Predictions of Clinical Outcomes after Anatomic and Reverse Total Shoulder Arthroplasty

  • Hamidreza Rajabzadeh-Oghaz,
  • Vikas Kumar,
  • David B. Berry,
  • Anshu Singh,
  • Bradley S. Schoch,
  • William R. Aibinder,
  • Bruno Gobbato,
  • Sandrine Polakovic,
  • Josie Elwell and
  • Christopher P. Roche

23 February 2024

Background: Despite the importance of the deltoid to shoulder biomechanics, very few studies have quantified the three-dimensional shape, size, or quality of the deltoid muscle, and no studies have correlated these measurements to clinical outcomes a...

  • Article
  • Open Access
9 Citations
8,655 Views
15 Pages

11 May 2017

This study aimed to investigate the fatiguing characteristics of muscle-tendon units (MTUs) within skeletal muscles during static isometric contraction tasks. The deltoid was selected as the target muscle and three head-related static isometric contr...

  • Article
  • Open Access
419 Views
17 Pages

Maximum Shoulder Torque and Muscle Activation During Standing Arm Flexion: Reference Data for Biomechanical and Ergonomic Applications

  • Georgios Aronis,
  • Michael Kurz,
  • Florian Wimmer,
  • Harald Hackl,
  • Thomas Angeli and
  • Margit Gföhler

Objectives: Shoulder joint strength and muscle activation during overhead reaching are critical for ergonomic task design, rehabilitation, and exoskeleton support. The objective of this study was to characterize maximum shoulder torque and flexor mus...

  • Article
  • Open Access
12 Citations
2,864 Views
12 Pages

Shear-Wave Elastography and Viscosity PLUS for the Assessment of Peripheric Muscles in Healthy Subjects: A Pre- and Post-Contraction Study

  • Ioana-Teofana Dulgheriu,
  • Carolina Solomon,
  • Delia Doris Muntean,
  • Raluca Petea-Balea,
  • Manuela Lenghel,
  • Anca Ileana Ciurea and
  • Sorin Marian Dudea

2 September 2022

Viscosity is a novel parameter, recently introduced in the use of elastographic techniques, correlating to shear-wave dispersion. The purpose of this study was to provide normal reference viscosity values for the peripheral muscles in healthy volunte...

  • Article
  • Open Access
1 Citations
1,797 Views
17 Pages

Positional Analysis of Assisting Muscles for Handling-Assisted Exoskeletons

  • Zheng Wang,
  • Xiaorong Guan,
  • Long He,
  • Meng Zhu and
  • Yu Bai

18 July 2024

In order to better design handling-assisted exoskeletons, it is necessary to analyze the biomechanics of human hand movements. In this study, Anybody Modeling System (AMS) simulation was used to analyze the movement state of muscles during human hand...

  • Article
  • Open Access
572 Views
21 Pages

High-Density Surface Electromyography Excitation of Prime Movers Across Scapular Positions in the Seated Row

  • Riccardo Padovan,
  • Emiliano Cè,
  • Stefano Longo,
  • Gianpaolo Tornatore,
  • Fabio Esposito and
  • Giuseppe Coratella

Objectives: The present study compared the amplitude and spatial distribution of muscle excitation between a seated row performed with a fixed scapular position (fixed-SR) and a free scapular position (free-SR) in resistance-trained men, analyzing co...

  • Article
  • Open Access
4 Citations
3,526 Views
14 Pages

Oxygen Consumption (VO2) and Surface Electromyography (sEMG) during Moderate-Strength Training Exercises

  • Muhammad Adeel,
  • Hung-Chou Chen,
  • Bor-Shing Lin,
  • Chien-Hung Lai,
  • Chun-Wei Wu,
  • Jiunn-Horng Kang,
  • Jian-Chiun Liou and
  • Chih-Wei Peng

Oxygen consumption (VO2) during strength training can be predicted through surface electromyography (sEMG) of local muscles. This research aimed to determine relations between VO2 and sEMG of upper and lower body muscles to predict VO2 from sEMG duri...

  • Article
  • Open Access
1,752 Views
12 Pages

23 July 2024

Background: We aimed to elucidate the quantitative relationship between the neuromuscular blockade depth and intraoperative motor-evoked potential amplitudes. Methods: This prospective, single-arm, open-label, observational study was conducted at a s...

  • Article
  • Open Access
3,752 Views
13 Pages

17 March 2022

The load scenario within the shoulder joint among its muscle–tendon complexes during fast motions is of interest, as it would allow an evaluation of critical, accident-like motions. To enhance knowledge, a modelling approach was carried out and...

  • Article
  • Open Access
28 Citations
5,586 Views
15 Pages

Ergonomic Assessment of a Lower-Limb Exoskeleton through Electromyography and Anybody Modeling System

  • Yong-Ku Kong,
  • Kyeong-Hee Choi,
  • Min-Uk Cho,
  • Seoung-Yoen Kim,
  • Min-Jung Kim,
  • Jin-Woo Shim,
  • Sang-Soo Park,
  • Kyung-Ran Kim,
  • Min-Tae Seo and
  • Hyun-Ho Shim
  • + 1 author

The aim of this study was to determine the muscle load reduction of the upper extremities and lower extremities associated with wearing an exoskeleton, based on analyses of muscle activity (electromyography: EMG) and the AnyBody Modeling System (AMS)...

  • Article
  • Open Access
1 Citations
4,881 Views
10 Pages

The Effect of Handlebar Height and Bicycle Frame Length on Muscular Activity during Cycling: A Pilot Study

  • Ana Conceição,
  • Vítor Milheiro,
  • José A. Parraca,
  • Fernando Rocha,
  • Mário C. Espada,
  • Fernando J. Santos and
  • Hugo Louro

The cycling literature is filled with reports of electromyography (EMG) analyses for a better understanding of muscle function during cycling. This research is not just limited to performance, as the cyclist’s goal may be rehabilitation, recrea...

  • Article
  • Open Access
2,069 Views
13 Pages

Great Offset Loading Influences Core and Bench Press Peak Prime Mover’s Activity in Trained Athletes

  • Bernat Buscà,
  • Jordi Arboix-Alió,
  • Clàudia Baraut,
  • Adrià Arboix and
  • Joan Aguilera-Castells

Objectives: This study aimed to compare the acute responses of the muscular activity of primary movers during bench press execution under asymmetric loads (25%, 50%, and 75%). Methods: The study included 30 resistance-trained males (n = 25, age = 22....

  • Article
  • Open Access
7 Citations
6,835 Views
16 Pages

EEG-Based EMG Estimation of Shoulder Joint for the Power Augmentation System of Upper Limbs

  • Hongbo Liang,
  • Yingxin Yu,
  • Mika Mochida,
  • Chang Liu,
  • Naoya Ueda,
  • Peirang Li and
  • Chi Zhu

10 November 2020

Brain–Machine Interfaces (BMIs) have attracted much attention in recent decades, mainly for their applications involving severely disabled people. Recently, research has been directed at enhancing the ability of healthy people by connecting the...

  • Review
  • Open Access
2 Citations
2,598 Views
27 Pages

31 May 2025

Ultrasound-guided botulinum toxin type A (BoNT-A) injections play a critical role in the management of upper limb spasticity. This is the second part of ‘The Elias University Hospital Approach: A Visual Guide to Ultrasound-Guided Botulinum Toxi...

  • Article
  • Open Access
8 Citations
4,055 Views
14 Pages

7 December 2022

There is a growing application of passive exoskeletons in the industrial sector with the purpose to reduce the incidence of work-related musculoskeletal disorders (MSDs). Nowadays, while many passive shoulder exoskeletons have been developed to suppo...

  • Case Report
  • Open Access
3,163 Views
7 Pages

Recurrent Falls as the Only Clinical Sign of Cortical–Subcortical Myoclonus: A Case Report

  • Giulia De Napoli,
  • Jessica Rossi,
  • Francesco Cavallieri,
  • Matteo Pugnaghi,
  • Romana Rizzi,
  • Marco Russo,
  • Federica Assenza,
  • Giulia Di Rauso and
  • Franco Valzania

28 December 2023

Some authors use the term cortical–subcortical myoclonus to identify a specific type of myoclonus, which differs from classical cortical myoclonus in that the abnormal neuronal activity spreads between the cortical and subcortical circuits, pro...