Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"Muscle Co-contraction"”.
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Characteristics of muscle co-contraction during isometric tracking
… research was to study the relationship between muscle coordination and the performance of a simple manual tracking task. The study employed an isometric, zero order, pursuit tracking task with a laterally translating, periodic sine wave forcing function. The speed of the target was varied by …
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Improving prosthetic control : an analysis of EMG-based haptic feedback’s role in reducing muscle co-contraction
… vöðvasamdrætti og draga úr vöðva sampspennu (co-contraction). Niðurstöðurnar sýndu að titrings-snerti svörunarkerfi var skilvirkt og hjálpaði notendum við að greina vöðvasamdrætti sína á áhrifaríkan hátt. Athyglisvert er að endurgjöfin leiddi til minnkunar á vöðva samspennu í þremur af fjórum …
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The effects of perturbation frequency, magnitude, and uncertainty during static and dynamic tracking on the estimated level of muscle co-contraction
… investigate the predictability of antagonistic muscle forces during static and dynamic tracking tasks with perturbations. In the first experiment, perturbations to the isometric tracking were effected by sudden momentary changes in the gain. In the second experiment, perturbations to the …
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Clinical and Biomechanical Effects of the Traditional Chinese Medical Treatments in Individuals with Medial Knee Osteoarthritis
Background: Knee otesoarthritis (OA) is the most common of the arthritises, affecting an estimated over 300 million people worldwide. Traditional Chinese Medicine (TCM) therapies have been widely used in the management of knee OA in China, however, there has been a lack of studies evaluated the …
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Sensorimotor learning under switching dynamics
… motor memories without interference. Here we combine behavioural experiments and computational modelling to investigate how the sensorimotor system uses contextual information to create, update and recall motor memories. We first examine the role of muscle co-contraction in the learning of …
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Shock attenuation at the knee during walking in people with knee osteoarthritis: association with disease severity and effects of exercise
… the knee during walking and its association with muscle activation and disease severity in people with knee osteoarthritis. In addition, this study will investigate the effects of exercise intervention on shock attenuation at the knee in this population of individuals. METHODS: 295 individuals …
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Effectiveness of single and combined treatments on biomechanical and clinical outcomes during walking in healthy individuals and individuals with knee osteoarthritis
Knee osteoarthritis (OA) is considered a common chronic musculoskeletal disease affecting the medial compartment more than the lateral compartment and leading to disability and a reduction in activity level. Lateral wedge insoles (LWI) are a conservative treatment that aims to reduce the knee …
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The influence of trunk inclination on lower limb moments and muscle activation patterns
… by altered joint moments, increased knee muscle activity and increased muscular co-contraction. Modelling studies suggest that such altered muscle patterns may increase the loading on knee joint, with imaging studies suggesting that co-contraction may accelerate cartilage loss. …
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Towards improved efficacy of exercise programmes in knee osteoarthritis
Knee osteoarthritis (OA) is a common musculoskeletal condition influenced by theload on the knee (i.e. External Knee Adduction Moment (EKAM)). Clinicalguidelines recommend exercise and education with knee OA. Open kinetic chainstrengthening exercises of the knee and/or hip muscles did not change …
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Effects of Seated Whole-Body Vibration on Spinal Stability Control
… and their prevention is of great importance for companies and their employees. Whole-body vibration is a risk factor for low back disorders, but the neuromuscular, biomechanical, and/or physiological mechanisms responsible for this increased risk are unclear. These studies investigated changes in …
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High flexion kinematics and kinetics for the improvement of artificial knee joints
… and optimally designed artificial knees could be created for high flexion activities, if the knee joint kinematics and joint contact forces applied during finite element testing, knee simulator testing, and fatigue testing were more physiologically accurate. The objective of this work was …
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Lower Extremity Muscle Activation Following a Previous Knee Injury: Implications for Post-Traumatic Knee Osteoarthritis
… knee osteoarthritis (PTOA) 10-20 years later. Compensatory activation patterns of knee muscles in response to the trauma may persist past the acute injury phase and result in abnormal mechanical loading and subsequent osteoarthritis of the knee. This dissertation aimed to use surface …