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A New Short-Term Assessment Condition for Evaluating Nonfunctional Electromyographic Activity of Masseter Muscle During Wakefulness.
J Oral Rehabil
January 2025
Department of Masticatory Function and Health Science, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo (Former Name: Tokyo Medical and Dental University), Tokyo, Japan.
Background: Awake bruxism involves masticatory muscle activity during wakefulness, potentially leading to clinical concerns. Accurate electromyography (EMG) assessment is challenging with brief durations.
Objective: To establish a reliable, short-term measure for nonfunctional masseter muscle activity during wakefulness.
Effects of forearm rotation on wrist flexor and extensor muscle activities.
J Orthop Surg Res
January 2025
Department of Orthopedic Surgery, Tokyo Medical University Ibaraki Medical Center, Ami-Town, Ibaraki-Pref., Japan.
The forearm muscles coordinately control wrist motion, and their activity is affected by forearm rotation. Although forearm rotation has been implicated in the development of lateral and medial epicondylitis, its biomechanical background remains unknown. Therefore, the present study investigated the activity of wrist muscles in various forearm positions.
View Article and Find Full Text PDFEffects of an occupational soft-back exoskeleton during order picking: a field study in logistics.
Ergonomics
January 2025
DevAH, Université de Lorraine, Nancy, France.
The use of exoskeletons is increasingly considered as a solution to reduce workers' exposure to physical risk factors, such as low-back disorders. The aim of this study was to evaluate the effects of the CORFOR occupational soft-back exoskeleton on trunk muscle activity and kinematics during an order picking manual task performed in the field. 10 workers, with at least 4 weeks' experience using the exoskeleton, performed a 1.
View Article and Find Full Text PDFNeuromechanical Models of Mild Traumatic Brain Injury Conditioned on Reaction Time: A Systematic Review and Meta-Analysis.
J Clin Med
December 2024
Mechanical Engineering Department, Auburn University, Auburn, AL 36849, USA.
The accurate, repeatable, and cost-effective quantitative characterization of mild traumatic brain injuries (mTBIs) is crucial for safeguarding the long-term health and performance of high-risk groups, including athletes, emergency responders, and military personnel. However, gaps remain in optimizing mTBI assessment methods, especially regarding the integration of neuromechanical metrics such as reaction time (RT) in predictive models. This review synthesizes existing research on the use of neuromechanical probabilistic models as tools for assessing mTBI, with an emphasis on RT's role in predictive diagnostics.
View Article and Find Full Text PDFImpact of the Abdominal Drawing-In Maneuver on Spinal Extensor Muscle Activity: A Randomized Controlled Double-Blind Trial Involving Individuals with Non-Specific Low Back Pain.
Int J Environ Res Public Health
December 2024
Gulhane Faculty of Physical Therapy and Rehabilitation, University of Health Sciences, 06010 Ankara, Turkey.
Non-specific low back pain (NSLBP) is a common musculoskeletal issue that can limit function and reduce the patient's quality of life. Enhancing spinal stabilizer muscle activity through targeted exercises may help improve spinal alignment and alleviate NSLBP symptoms. This study aimed to investigate whether incorporating the abdominal drawing-in maneuver (ADIM) into selected low back exercises influences the electromyographic (EMG) activity of key spinal extensor muscles.
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