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 20 of 180 for “"Muscle activity"”.
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Inhibitory Control of Muscle Activity in Sleep
… the inhibitory control of REM sleep motor activity using both a pharmacological rat model and a genetic mouse model. I characterized the role for GABA and glycine in mediating the REM-specific suppression of muscle activity as well as their involvement in regulating the phasic muscle …
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Body dynamics and muscle activity during Chi running
… study compared the center of mass behavior and muscle activation patterns during Chi running and normal running. The study included 10 participants, both male and female, who were recreational runners training at least 5 days a week. Thirty-second trials were collected continuously on a …
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Investigating Forearm Muscle Activity Across Violin String Heights
… differences in forearm and upper trapezius muscle activity and co-contraction indices during performance of a four-octave G-major scale on two identical violins with a low and a high string height. Surface electromyography was collected from six forearm muscles and bilaterally from the upper …
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Muscle fatigue and other factors influencing forearm muscle activity
The wrist extensor muscles of the forearm exhibit relatively greater muscle activity than the wrist flexors during most hand/wrist tasks. Since the extensors operate at a greater percentage of maximum to balance wrist joint moments, this could contribute to their higher incidence of overuse injury. …
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The effect of spinal manipulation on biceps brachii muscle activity
Submitted in partial compliance with the requirements for the Master’s Degree in Technology: Chiropractic, Durban University of Technology, Durban, South Africa, 2016.
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Relationship between kinematic factors and muscle activity during wheelchair propulsion
… relationship between the kinematic factors and muscle activity during wheelchair propulsion under four speed conditions (90%, 70%, 50% and 30% of individual maximum speed) when using a recreational wheelchair. Ten wheelchair athletes were tested in which the IEMG muscle activity from five …
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Knee joint contact stresses : the influence of deformity and muscle activity
… surgery. It was therefore hypothesized that muscle contraction can alter the stress distribution within the knee joint and that overloading can occur in the absence of a deformity. Six normal knees were harvested from different donors. The exact orientation of all muscle groups was recorded …
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3D movement and muscle activity patterns in a violin bowing task
… 3D motion analysis and EMG to measure muscle activity has been suggested as a quantitative technique to explore this problem by identifying movement patterns and muscular demands which may predispose violinists to overuse injuries. This multi-disciplinary analysis technique has, so far, …
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Acute effects of dynamic stretching on flexibility and agonist-antagonist muscle activity
… association between flexibility and opposing muscle activity as well as a diminishing effect of stretching in AROM. "--Leaf iv.</p>
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T-type Calcium Channels in Arterial Smooth Muscle: Activity, Regulation and Function
… coupling in arterial smooth muscle. Despite evidence of T-type CaV channels in rodent smooth muscle, little is known of their regulation and function. This thesis sought to delineate T-type Ca2+ channels, ascertain if they are regulatory targets of vasoactive signaling …
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Kinematics and Muscle Activity of the Upper Extremity While Performing Cleaning Tasks
… are characterized by a combination of static muscle loads (mainly involving bending and twisting of the back) and repetitive movements of the arms and hands requiring high physical exertion. Tasks such as lifting, mopping, and vacuuming often involve awkward postures with both dynamic and …
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Get a grip: Analysis of muscle activity and perceived comfort in using stylus grips
… based primarily on touch, feel, aesthetics, and muscle exertion. Previous studies make it clear that different pen characteristics have to be considered along with hand-instrument interaction in the design of writing instruments. This should include pens designed for touch screens and computer …
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On the Physical Demands of Gaming: Quantifying Pain, Muscle Activity, Kinematics, and Performance Changes
… nature of gaming can likely lead to significant muscle fatigue and increase an individual’s susceptibility to musculoskeletal injuries and pain. However, the physical demands of gaming have largely been unexplored. The objectives of this thesis fell into three categories. 1) Determine where …
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The effect of foot orthoses on muscle activity and morphology, foot biomechanics and skin sensitivity
… consequently alter internal forces generated by muscles. However, little is known about whether systematic changes in foot orthosis geometry result in systematic changes in activation of lower limb muscles. This PhD investigated the effects of foot orthoses on selected lower limb muscles. A …
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Effects of Three Lingual Conditions on Submental Muscle Activity in Healthy Young and Old Adults
… and esophageal. This study focuses on muscles that contribute to both the oral and pharyngeal stages of swallowing: submental and lingual muscles.The purpose of this study was to examine submental muscle activation using surface electromyography (sEMG), and lingual strength using …
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The Effects of Instrument Handle Design on Forearm Muscle Activity During Scaling by Dental Hygienists
… D. 18 grams and 6.35 mm diameter) on the muscle activity of four forearm muscles during a simulated scaling experience. Methods: A convenience sample of 27 dental hygienists used a Columbia 13/14 curet with four different instrument handles to scale artificial calculus. While scaling, each …
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Combined effects of prozac and hypothalmic mediated response on masseter muscle activity in the cat
… for elicitation of defensive rage behavior. EMG activity was recorded with a bipolar electrode attached to the masseter muscle to establish baseline before the infusion of the drug. Mean frequency values of early and late stimulation were calculated using the continuous wavelet transform. The …
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Comparisons Of Time To Task Failure And Muscle Activity For Two Different Submaximal Fatiguing Contractions
… in order to explore potential mechanisms of muscle fatigue. Twenty healthy and recreationally active individuals (10 men and 10 women) participated in this 3-visit investigation. At least 48 hours after the first visit as the familiarization, the subject returned for one of the experimental …
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Working postures in dental practitioners and dental students: relationships between posture, seating, and muscle activity
… aim of this project is to examine posture and muscle activity when using an ergonomically designed saddle seat compared with a conventional seat during common dental procedures with the dental students and practising dentists. The study was conducted with practising dentists across the West …
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