Hip muscle weakness can be a precursor to or a result of lower limb injuries. Assessment of hip muscle strength and muscle motor fatigue in the clinic is important for diagnosing and treating hip-related impairments. Muscle motor fatigue can be assessed with surface electromyography (sEMG), however sEMG requires specialized equipment and training. Inertial measurement units (IMUs) are wearable devices used to measure human motion, yet it remains unclear if they can be used as a low-cost alternative method to measure hip muscle fatigue. The goals of this work were to (1) identify which of five pre-selected exercises most consistently and effectively elicited muscle fatigue in the gluteus maximus, gluteus medius, and rectus femoris muscles and (2) determine the relationship between muscle fatigue using sEMG sensors and knee wobble using an IMU device. This work suggests that a wall sit and single leg knee raise activity fatigue the gluteus medius, gluteus maximus, and rectus femoris muscles most reliably (p < 0.05) and that the gluteus medius and gluteus maximus muscles were fatigued to a greater extent than the rectus femoris (p = 0.031 and p = 0.0023, respectively). Additionally, while acceleration data from a single IMU placed on the knee suggested that more knee wobble may be an indicator of muscle fatigue, this single IMU is not capable of reliably assessing fatigue level. These results suggest the wall sit activity could be used as simple, static exercise to elicit hip muscle fatigue in the clinic, and that assessment of knee wobble in addition to other IMU measures could potentially be used to infer muscle fatigue under controlled conditions. Future work examining the relationship between IMU data, muscle fatigue, and multi-limb dynamics should be explored to develop an accessible, low-cost, fast and standardized method to measure fatiguability of the hip muscles in the clinic.
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http://dx.doi.org/10.1038/s41598-024-61325-7 | DOI Listing |
J Egypt Public Health Assoc
December 2024
Department of Clinical Nutrition and Dietetics, Faculty of Applied Medical Sciences, The Hashemite University, Zarqa, Jordan.
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J Arthroplasty
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Department of Orthopedic Surgery and Traumatology. La Paz University Hospital. Madrid, Spain; La Paz University Hospital. Paseo de la Castellana, 261, 28046, Madrid, Spain.
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Medicine (Baltimore)
December 2024
Department of Occupational Therapy, School of Health Sciences, Fukushima Medical University, Fukushima-city, Fukushima, Japan.
This study aimed to determine if the vitality index predicts walking independence in inpatients with hip fractures and calculate a cutoff value. This retrospective cohort study included inpatients with hip fracture (N = 133). Logistic regression analysis was performed with walking independence at discharge and vitality index as the dependent and independent variables, respectively, and age, Berg balance scale (BBS), knee extension muscle strength, and revised Hasegawa's dementia scale at admission as covariates.
View Article and Find Full Text PDFJ Neurophysiol
December 2024
Department Artificial Intelligence in Biomedical Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91052 Erlangen, Germany.
For individuals with motor complete spinal cord injury (SCI), previous works have shown that spared motor neurons below the injury level can still be voluntarily controlled. In this study, we investigated the behavior of these neurons after SCI by analyzing neural and spatial properties of individual motor units using high-density surface electromyography (HDsEMG) and ultrasound imaging. The dataset for this study is based on motor unit data from our previous work (Oliveira .
View Article and Find Full Text PDFCochrane Database Syst Rev
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Department of Trauma & Orthopaedics, University Hospitals Coventry & Warwickshire NHS Trust, Coventry, UK.
This is a protocol for a Cochrane Review (intervention). The objectives are as follows: To determine the benefits and harms of injury prevention programmes on anterior cruciate ligament injuries.
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