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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 22 for “"localized muscle fatigue"”.
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Localized muscle fatigue during isotonic and nonisotonic isometric efforts
… complaints and problems. Research on localized muscle fatigue (LMF) has been viewed as a viable endeavor toward understanding the processes and mechanisms associated with WMSDs. A mounting of evidence on local fatigue during sustained static work has been presented, but much less is …
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The effect of localized muscle fatigue on tibial impact acceleration.
… running is known to increase with general body fatigue. The purpose of this study was to determine if localized muscle fatigue of the shank muscles would also cause an increase in peak tibial acceleration. The human pendulum system was used to control impact velocity and joint angle. There were …
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Localized Muscle Fatigue: Theoretical and Practical Aspects in Occupational Environments
Localized muscle fatigue (LMF) is a complex, multifactorial phenomenon that involves exercise-induced decrements in the ability to generate force or power. LMF can adversely affect performance and may increase the risk of work-related musculoskeletal disorders (WMSDs), and is thus of contemporary …
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The effect of prior localized muscle fatigue on lactate production during submaximal exercise
Muscle fatigue is a complex phenomena that involves both metabolic and neural factors. The present study examined the prolonged effects of localized muscle fatigue on lactate production during exercise. Five subjects, 3 females and 2 males, ages 25-29 (x = 27 {dollar}\pm{dollar} 1) participated in …
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Exploring subjective and objective localized muscle fatigue responses at recommended upper limb ergonomics limits
Localized muscle fatigue (LMF) has been associated with numerous negative outcomes, including a reduction in task performance and development of musculoskeletal injury. Thus, the quantification of LMF development in response to occupational task demands has become a major focus in the ergonomics …
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Quantifying Localized Muscle Fatigue of the Forearm during Simulations of High Pressure Cleaning Lance Tasks
Localized muscle fatigue (LMF) has been proposed as a surrogate measure to injury, since the onset of fatigue is rapid rather than months or years required to the onset of work related musculoskeletal disorders (WMSDs). The objectives of this study were to estimate LMF and quantify muscle activity …
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Use of Statistical Mechanics Methods to Assess the Effects of Localized muscle fatigue on Stability during Upright Stance
… to reduce the prevalence of occupational falls. Localized muscle fatigue (LMF), altered sensory input, and inter-individual differences (e.g. age and gender) have been shown to influence postural control, and numerous methods have been developed in order to quantify such effects. Recently, …
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Effects of Localized Muscle Fatigue on Postural Control: Interactive Effects with Inclined Surfaces and Unexpected Loads, and Intervention Efficacy
… are a major cause of injuries and fatalities. Muscle fatigue is one important factor that has been linked to a decrement in postural control and a potential increased falling risk. However, potential interactive effects of muscle fatigue with other risk factors remain unclear, and practical …
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The Effects of Job Rotation Parameters on Localized Muscle Fatigue and Performance: An Investigation of Rotation Frequency and Task Order
… on rotation frequency and task order, on muscle fatigue and performance when included tasks loaded the same muscle group. Twelve participants completed six experimental sessions in each of three studies, during which repetitive tasks were performed for one hour either with or without …
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Experimental and simulation-based assessment of the human postural response to sagittal plane perturbations with localized muscle fatigue and aging
… Previous research has established that localized muscle fatigue (LMF) increases center of mass (COM)- and center of pressure (COP)-based measures of quiet stance. This is important because these increases have been linked to elevated risk of falls, and workers in the construction …
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Evaluation of Circumferential Ankle Pressure as an Ergonomic Intervention to Maintain Balance Perturbed by Localized Muscular Fatigue of the Ankle Joint
… shown to improve proprioception, and inducing localized muscle fatigue at various musculatures has been shown to adversely affect postural control. However, the potential for pressure application to mitigate the effects of localized muscle fatigue on postural control has not yet been …
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Effect of glove port height on upper body stress for performing laboratory work
… data. The electromyography data was analyzed for localized muscle fatigue in the targeted muscles, (trapezius, anterior deltoid, bicep, and erector spinae muscle groups). The surveys were used to gather information on the performed task while using glove boxes and to measure perceived stress and …
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Predicting Shoulder Fatigue for Long Durations Using Psychophysical Measures Obtained from Short Trials
Localized muscular loads have in many cases replaced whole body loads in the current mechanized industry. In highly automated automobile industries, the prevalence of upper extremity musculoskeletal disorders is a matter of continuing concern. Overhead work has especially been noted for its …
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Evaluating obesity-related differences in upper extremity and trunk muscular capacity
… differences in physical capacity by measuring localized muscle fatigue, endurance, and the effects of fatigue on psychomotor function. Three experiments were completed, progressing from controlled static to more complex intermittent and functional tasks. The work also examined whether obesity …
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Effects of Quadriceps Fatigue on the Outcomes of Slips and Falls
… Existing epidemiological evidence suggests that localized muscle fatigue might be considered as an intrinsic risk factor that causes lack of balance control leading to falls. The literature on the relationship between localized muscular fatigue of the lower extremity and the gait parameters …
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Carnosine metabolism and function in the thoroughbred horse
… (H<sup>+</sup>) ions within the skeletal muscles. Without a system for maintaining acid-base balance the consequential accumulation of H+ ions within the working muscles would produce a rapid decline in intra-cellular pH with a concomitant impairment of the contractile process. Carnosine …
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Development and evaluation of postural control models for lifting motions and balance control
… based measures. Many factors, such as aging, localized muscle fatigue, and external loads, have been found to adversely affect balance control. At the same time, behaviors during upright stance are commonly characterized by COP-based measures. Thus, changes in COP based measures with aging, …
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Post fatigue changes in the stability of cervical spine
… spine MSDs. Most of these exertions induce neck muscle fatigue which may affect the stability of the cervical spine. A less stable spine can be both a cause and consequence of spinal pain. The effect of muscle fatigue on the stability of the cervical spine is currently not well understood. The …
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Influence of Prolonged Sitting and Psychosocial Stress on Lumbar Spine Kinematics, Kinetics, Discomfort, and Muscle Fatigue
… demands, duration of exposures, and presence of muscle fatigue). A few studies have assessed low back loads in seated postures, but none has investigated the effects of prolonged sitting or time-dependent variations on spinal structure and spinal loading. Adverse effects of muscle fatigue on low …
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Developing and Evaluating New Methods for Assessing Postural Control and Dynamics
… and also to better understand the effects of localized ankle muscle fatigue, gender, and aging on postural coordination and control. First, two methods were used to evaluate postural coordination. A wavelet coherence approach was developed and applied to assess the level and pattern of …
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