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 55 for “"Handgrip"”.
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Handgrip pattern recognition
… that can only be fired by the authorized user. Handgrip pattern recognition holds great promise in the development of the smart gun. Two algorithms, static analysis algorithm and dynamic analysis algorithm, were developed to find the patterns of a person about how to grasp a handgun. The static …
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Toward a greater understanding of the brain processes underlying handgrip and handgrip fatigue
Handgrip is a ubiquitous human movement that determines how we interact with our environment. It is involved in almost every aspect of daily life (e.g. opening a door, handling cutlery, using tools) and like all human movement, its application is limited by muscle fatigue. However, the supraspinal …
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Arterial and venous adaptations to short-term handgrip exercise training
Four studies on vascular and exercise physiology are presented in this document. The 1st study examined the relationships between measures of fitness and FVF in 55 young [22.6 ± 3.5 years] adults. Estimated VO<sub>2peak</sub> correlated with arterial inflow (Ainf) [r=0.54; p=0.012] and resting …
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USING ADDITIONAL MEASURES OF HANDGRIP STRENGTH TO PREDICT AEROBIC CAPACITY IN WHEELCHAIR USERS
… users have specific boundaries. Measuring handgrip strength (HGS) with electronic handgrip dynamometers has been shown to be a reliable measure of muscle function and a convenient assessment of overall muscle strength. This study aimed to determine the correlation of maximal HGS, HGS rate …
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Plasma nitrite reserve and vascular function before and after handgrip training in patients with heart failure
There is a direct relationship between vascular health and physical function. The controllers of this relationship are unclear, but appear to involve biomechanical and biochemical influences on the vascular wall. Purpose: The purpose of this dissertation was twofold: (1) to explore the relationship …
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Transcranial Direct Current Stimulation of the Dorsolateral Prefrontal Cortex Does Not Improve Handgrip Time-to-Failure or Alter Central or Peripheral Hemodynamics
… prefrontal cortex (DLPFC) would improve handgrip time-to-failure in adults 60 years old and older. Twenty-five participants completed five maximal voluntary contractions, followed by 20-minutes of a-tDCS or SHAM conditions. Next, participants completed a handgrip time-to-failure task by …
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Age differences on the pattern of blood pressure response to isometric exercise in normotensive males.
… blood pressure (pressor) response to isometric handgrip contractions between older and younger males with and without blood occlusion. Ten older males (mean age 54.7 +/- 3.0 yrs) and ten younger males (mean age 26.6 +/- 1.9 yrs) normotensive at rest and dynamic exercise participated in this …
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Adaptive control for one-DOF finger rehabilitation robot
… unable to adapt the variations in the load, as handgrip stiffness can be varied from patient to patient and PID controller is needed to tune for each stiffness. The performance of the robot will be affected and the steady state error occurred when the unknown and inaccessible load torque is …
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The influence of methylphenidate on heart rate and brain connectivity
… on fatigue thresholds, I used a MRI compatible handgrip device which recorded grip force output during a fatiguing handgrip task. To measure HR before and during handgrip exercise I used a MRI compatible electrocardiogram (ECG) machine. My first study aimed to determine the effect of MA on …
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Paddle grip : handgrip size ratio and associated factors contributing to the development of lateral elbow tendinosis and DeQuervains tenosynovitis in K1 marathon paddlers during the 2006 Berg River Canoe Marathon
… the relationship between the paddle grip: handgrip size ratio and associated factors contributing to the development of lateral elbow tendinosis and DeQuervains tenosynovitis in K1 marathon paddlers.
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Can exercise mediate similar beneficial effects on endothelial function and endothelial reperfusion injury as ischemic preconditioning?
… visits for each experimental condition: control, handgrip exercise and IPC. During each experimental visit, bilateral brachial artery flow-mediated dilation (FMD) was assessed at rest (baseline). Participants then either rested in the supine position for 40 min (Control), performed handgrip …
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An investigation of the ergonomics and biomechanics of rifle shooting from the standing position
… was dependent on the attributes of the shooter. Handgrip forces were found to be well below the maximum handgrip strength. An exploratory investigation of the interrelationships among foot forces, rifle recoil and angular and linear displacements was carried out. No horizontal foot forces to …
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Effects of competition on performance, and the underlying psychophysiological mechanisms
… the third experiment, participants undertook a handgrip endurance task in competitive and non-competitive conditions. Results indicated that endurance performance was greater during competition. Enjoyment fully mediated whereas effort and heart rate variability partially mediated the effects of …
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The Effect of Fetal Programming on Physical Activity Behaviors
… strength was measured four times: dominant handgrip maximal voluntary contraction (MVC), non-dominant handgrip MVC, left leg MVC, and right leg MVC. Additional measurements included height, weight, body composition, and maximal oxygen consumption (VO2max) as a measure of cardiorespiratory …
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Resposta autonômica a uma refeição em indivíduos com gastrite leve ou moderada, com e sem infecção por Helicobater pylori
… P=0.045. Resting postprandial BP before handgrip was significantly lower than pre-prandial in Hp patients (71 ± 8 mmHg vs. 76 ± 6 mmHg, p=0.0068) but not in controls (76 ± 10 mmHg vs. 77 ± 9 mmHg, p=0.61). Regarding parasympathetic tests, the 4-s unloaded exercise test was revealing: …
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Model reference adaptive control for one dof hand rehabilitation robot
… to adapt the variation load of stroke patient handgrip stiffness and it can only tune for each standard stiffness only. Therefore, this project will designed and develop the Model Reference Adaptive Control (MRAC) using one of adaptive mechanism that is Lyapunov Method. The MRAC with Lyapunov …
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Effects of training with an increase in training bar diameter on strength and functional endurance within older adults
… strength and endurance (primary outcome measure: handgrip strength; secondary outcome measures: handgrip endurance, upper body strength) to a greater extent than individuals who completed a program without the attachment. To the author’s knowledge there is no current research outlining any similar …
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The Impact of Chronic E-Cigarette Use on Flow- Mediated Dilation Elicited by a Sustained Shear Stress Stimulus
… creating sustained increases in blood flow with handgrip exercise, known as sustained stimulus FMD (SS-FMD). There is evidence suggesting that SS-FMD may detect endothelial dysfunction missed by the standard RH-FMD test. The impact of chronic e-cigarette use on SS-FMD has never been investigated. …
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The effect of concurrent mental and physical fatigue on physical endurance performance, strength and muscle activity: a pilot study
… and physical fatigue detrimentally affecting handgrip endurance and strength when compared to the mental fatigue and control conditions. As this pilot study was conducted to inform a larger planned data collection, several other areas for refinement in the protocol were identified, notably the …
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Feasibility, safety and responsiveness of health-related field-based physical fitness tests in adults: the adult-fit project
… children and adolescents, respectively; ii) the handgrip strength test was feasible to assess isometric muscular strength in children and adolescents; iii) the standing long jump test was feasible to assess lower body explosive strength in children and adolescents; iv) only the 2-km walk test …
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