The accurate measurement of human joint torque is one of the research hotspots in the field of biomechanics. However, due to the complexity of human structure and muscle coordination in the process of movement, it is difficult to measure the torque of human joints in vivo directly. Based on the traditional elbow double-muscle musculoskeletal model, an improved elbow neuromusculoskeletal model is proposed to predict elbow muscle torque in this paper. The number of muscles in the improved model is more complete, and the geometric model is more in line with the physiological structure of the elbow. The simulation results show that the prediction results of the model are more accurate than those of the traditional double-muscle model. Compared with the elbow muscle torque simulated by OpenSim software, the Pearson correlation coefficient of the two shows a very strong correlation. One-way analysis of variance (ANOVA) showed no significant difference, indicating that the improved elbow neuromusculoskeletal model established in this paper can well predict elbow muscle torque.
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http://dx.doi.org/10.1155/2021/1985741 | DOI Listing |
PLoS One
January 2025
Orthopedics Department, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.
Objective: The objective of this systematic review and meta-analysis is to clarify the rehabilitation efficacy of virtual reality (VR) balance training after anterior cruciate ligament reconstruction (ACLR).
Methods: This meta-analysis was registered in PROSPERO with the registration number CRD42024520383. The electronic databases PubMed, Web of Science, Cochrane Library, MEDLINE, Embase, China National Knowledge Infrastructure, Chinese Biomedical Literature, China Science and Technology Journal Database, and Wanfang Digital Periodical database were systematically searched to identify eligible studies from their inception up to January 2024.
PLoS One
January 2025
Faculty of Sport Sciences, Waseda University, Saitama, Japan.
Walking patterns can differ between children and adults, both kinematically and kinetically. However, the detailed nature of the ankle pattern has not been clarified. We investigated musculature, biomechanics, and muscle activation strategies and their relevance to walking performance in preschool (PS) and school children (SC), with adults (AD) as reference.
View Article and Find Full Text PDFJ Electromyogr Kinesiol
January 2025
Department of Human Health and Nutritional Sciences, University of Guelph, 50 Stone Road E, Guelph, ON N1G 2W1, Canada. Electronic address:
Rate of torque development (RTD) measures how rapidly one can generate torque and is crucial for balance and athletic performance. Fast RTD depends on the rapid recruitment of high threshold motor units (MUs). Cutaneous electrical stimulation has been shown to alter MU excitability, favoring high threshold MUs via reduced recruitment thresholds.
View Article and Find Full Text PDFArch Phys Med Rehabil
January 2025
Mandell Center for Multiple Sclerosis, Mount Sinai Rehabilitation Hospital, Trinity Health Of New England, Hartford, CT, USA; Department of Rehabilitative Medicine, Frank H. Netter MD School of Medicine at Quinnipiac University, North Haven, CT, USA; Department of Medical Sciences, Frank H. Netter MD School of Medicine at Quinnipiac University, North Haven, CT, USA; Department of Neurology, University of Connecticut School of Medicine, Farmington, CT, USA.
Objective: To determine whether hip flexion (HF), extension (HE), abduction (HA), knee flexion (KF) and extension (KE), and ankle plantarflexion (APF) and dorsiflexion (ADF) Maximum Voluntary Contraction (MVC) differentiates between non-fall and fall history in persons with MS (PwMS) after accounting for age, gender, fatigue, disability, and disease duration.
Design: Secondary analysis of a cross-sectional study.
Setting: Community-based comprehensive MS Center PARTICIPANTS: 172 persons with MS who completed a one-time visit INTERVENTIONS: Not applicable MAIN OUTCOME MEASURES: Lower limb (LL) MVC was measured for each muscle group as isometric peak torque (Newton-meter: Nm) of both limbs (Strongest: S; Weakest: W) using a Biodex Dynamometer and normalized by body weight (Nm/kg).
Introduction: Load carriage is an inherent part of tactical operations. Critical speed (CS) has been associated with technical and combat-specific performance measures (e.g.
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