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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
371

Anti-pronation tape: Initial effects on neuromotor control of gait, foot posture and foot mobility and the influence of continual use

Melinda Franettovich Unknown Date (has links)
Anti-pronation taping is commonly used by clinicians in the management of lower limb musculoskeletal pain and injury. Despite its frequent use in the clinical setting the mechanism(s) underlying its efficacy is not completely understood. For example, there is evidence that anti-pronation taping produces a biomechanical effect, but there has been little investigation of other mechanisms such as neurophysiological or psychological effects. Additionally, studies to date have been performed in mostly asymptomatic populations and have focused on the initial effect of tape (i.e. immediately following application and through a short duration of activity). Improved understanding of the underlying physiological mechanism(s) of anti-pronation tape is likely to facilitate improved knowledge of the technique, which may optimise its clinical application and contribute to clinical selection guidelines. The aims of this thesis were developed to address several of the limitations in the current anti-pronation taping literature. To facilitate an investigation of the comparative initial physiological effect of anti-pronation tape in a symptomatic and asymptomatic population, the first aim of this thesis was to compare neuromotor control (control of muscle activation and movement patterns) of gait, foot posture and foot mobility between asymptomatic individuals and individuals with a history of exercise related leg pain. The second aim of this thesis was to investigate the initial physiological effects of anti-pronation tape, specifically its neurophysiological (i.e. effect on muscle activation patterns) and biomechanical (i.e. effect on movement patterns, foot posture, foot mobility) effects. Thirdly this thesis aimed to investigate the duration of these initial physiological effects following tape removal. The fourth and fifth aims were to investigate the long term biomechanical and neurophysiological effects of anti-pronation taping i.e. following continual use over a clinically relevant period. In the first instance our aim was to investigate the effect of continual use on neuromotor control of gait, foot posture and foot mobility, and secondly to investigate the effect of continual use on the technique’s initial neurophysiological and biomechanical effects. Individuals with exercise related leg pain demonstrated lower activation of gluteus medius and lateral gastrocnemius during gait, but we observed no differences in lower limb movement patterns or foot posture and foot mobility between the two groups. The initial effect of tape was similar in individuals with and without exercise related leg pain. Specifically application of tape produced a reduction in activation of tibialis posterior, tibialis anterior and medial gastrocnemius, and increased activation of peroneus longus. There was a reduction in foot mobility, ankle plantarflexion and abduction excursion and an increase in ankle dorsiflexion and adduction excursion. Reduced muscle activation and increased motion was also observed at more proximal segments (knee, hip, pelvis), but were of smaller magnitude than at the foot and ankle. Changes in foot mobility, ankle kinematics and leg muscle activity did not continue following the removal of tape, but at more proximal segments (i.e. pelvis, hip and knee) small changes in kinematics and muscle activity were observed following the removal of tape. In regards to long term effects, continual use of tape for approximately 12 days produced a small increase in arch height when compared to a control. We did not observe a change in muscle activation or motion patterns, nor did continual use of the technique influence its initial neurophysiological or biomechanical effects (i.e. reduction in muscle activity, reduction in foot mobility, altered lower limb motion). The studies from this thesis provide evidence that anti-pronation tape should be considered in the management of individuals where reduced midfoot mobility, control of ankle motion or reduced activation of the leg muscles is desired, regardless of symptomatic status. When applied for approximately 12 days, anti-pronation tape produced a small increase in arch height ratio, but no alteration in neuromotor control. We are not aware of any definitive data on what constitutes a clinically meaningful increase in arch height, but results from a published case series suggests that our findings of a small increase in arch height may be clinically relevant for the treatment of lower extremity overuse injuries. Continual use of tape for a clinically relevant period does not alter its initial effects on foot posture and mobility or neuromotor control during gait. It would appear that the initial effects of anti-pronation tape are robust even after continuous use over a period of 11 days.
372

Anti-pronation tape: Initial effects on neuromotor control of gait, foot posture and foot mobility and the influence of continual use

Melinda Franettovich Unknown Date (has links)
Anti-pronation taping is commonly used by clinicians in the management of lower limb musculoskeletal pain and injury. Despite its frequent use in the clinical setting the mechanism(s) underlying its efficacy is not completely understood. For example, there is evidence that anti-pronation taping produces a biomechanical effect, but there has been little investigation of other mechanisms such as neurophysiological or psychological effects. Additionally, studies to date have been performed in mostly asymptomatic populations and have focused on the initial effect of tape (i.e. immediately following application and through a short duration of activity). Improved understanding of the underlying physiological mechanism(s) of anti-pronation tape is likely to facilitate improved knowledge of the technique, which may optimise its clinical application and contribute to clinical selection guidelines. The aims of this thesis were developed to address several of the limitations in the current anti-pronation taping literature. To facilitate an investigation of the comparative initial physiological effect of anti-pronation tape in a symptomatic and asymptomatic population, the first aim of this thesis was to compare neuromotor control (control of muscle activation and movement patterns) of gait, foot posture and foot mobility between asymptomatic individuals and individuals with a history of exercise related leg pain. The second aim of this thesis was to investigate the initial physiological effects of anti-pronation tape, specifically its neurophysiological (i.e. effect on muscle activation patterns) and biomechanical (i.e. effect on movement patterns, foot posture, foot mobility) effects. Thirdly this thesis aimed to investigate the duration of these initial physiological effects following tape removal. The fourth and fifth aims were to investigate the long term biomechanical and neurophysiological effects of anti-pronation taping i.e. following continual use over a clinically relevant period. In the first instance our aim was to investigate the effect of continual use on neuromotor control of gait, foot posture and foot mobility, and secondly to investigate the effect of continual use on the technique’s initial neurophysiological and biomechanical effects. Individuals with exercise related leg pain demonstrated lower activation of gluteus medius and lateral gastrocnemius during gait, but we observed no differences in lower limb movement patterns or foot posture and foot mobility between the two groups. The initial effect of tape was similar in individuals with and without exercise related leg pain. Specifically application of tape produced a reduction in activation of tibialis posterior, tibialis anterior and medial gastrocnemius, and increased activation of peroneus longus. There was a reduction in foot mobility, ankle plantarflexion and abduction excursion and an increase in ankle dorsiflexion and adduction excursion. Reduced muscle activation and increased motion was also observed at more proximal segments (knee, hip, pelvis), but were of smaller magnitude than at the foot and ankle. Changes in foot mobility, ankle kinematics and leg muscle activity did not continue following the removal of tape, but at more proximal segments (i.e. pelvis, hip and knee) small changes in kinematics and muscle activity were observed following the removal of tape. In regards to long term effects, continual use of tape for approximately 12 days produced a small increase in arch height when compared to a control. We did not observe a change in muscle activation or motion patterns, nor did continual use of the technique influence its initial neurophysiological or biomechanical effects (i.e. reduction in muscle activity, reduction in foot mobility, altered lower limb motion). The studies from this thesis provide evidence that anti-pronation tape should be considered in the management of individuals where reduced midfoot mobility, control of ankle motion or reduced activation of the leg muscles is desired, regardless of symptomatic status. When applied for approximately 12 days, anti-pronation tape produced a small increase in arch height ratio, but no alteration in neuromotor control. We are not aware of any definitive data on what constitutes a clinically meaningful increase in arch height, but results from a published case series suggests that our findings of a small increase in arch height may be clinically relevant for the treatment of lower extremity overuse injuries. Continual use of tape for a clinically relevant period does not alter its initial effects on foot posture and mobility or neuromotor control during gait. It would appear that the initial effects of anti-pronation tape are robust even after continuous use over a period of 11 days.
373

Anatomical and functional based upper limb models : methods for kinematic analysis of cricket spin bowling

Chin, Aaron January 2009 (has links)
[Truncated abstract] In cricket, the bowler propels a ball using a straight arm (permitted minimal extension) in an overhead fashion to a batsman situated approximately 20m away, who attempts to strike the ball in order to score runs for their team. Cricket bowling can be generalised by two types of bowlers; fast bowlers, who primarily use high ball speed, and spin bowlers that attempt to impart spin on the ball causing it to bounce in different directions. There has been numerous studies investigating the kinematics of fast bowling in cricket, but there is a paucity of objective literature on the spin bowling action due to the complex rotations of the upper limb necessary to develop ball velocity and rotation. One primary reason is that three dimensional (3D) analysis of upper limb movement is difficult due to the high degrees of freedom and ranges of motion of the associated joints. Furthermore, existing methods do not allow measurement of the kinematics of this highly dynamic task to be performed in an ecologically sound environment. The complexity is further compounded as the upper limb does not perform regular cyclical movements like the lower limb does with gait. Therefore, this makes it difficult to determine what
374

Anti-pronation tape: Initial effects on neuromotor control of gait, foot posture and foot mobility and the influence of continual use

Melinda Franettovich Unknown Date (has links)
Anti-pronation taping is commonly used by clinicians in the management of lower limb musculoskeletal pain and injury. Despite its frequent use in the clinical setting the mechanism(s) underlying its efficacy is not completely understood. For example, there is evidence that anti-pronation taping produces a biomechanical effect, but there has been little investigation of other mechanisms such as neurophysiological or psychological effects. Additionally, studies to date have been performed in mostly asymptomatic populations and have focused on the initial effect of tape (i.e. immediately following application and through a short duration of activity). Improved understanding of the underlying physiological mechanism(s) of anti-pronation tape is likely to facilitate improved knowledge of the technique, which may optimise its clinical application and contribute to clinical selection guidelines. The aims of this thesis were developed to address several of the limitations in the current anti-pronation taping literature. To facilitate an investigation of the comparative initial physiological effect of anti-pronation tape in a symptomatic and asymptomatic population, the first aim of this thesis was to compare neuromotor control (control of muscle activation and movement patterns) of gait, foot posture and foot mobility between asymptomatic individuals and individuals with a history of exercise related leg pain. The second aim of this thesis was to investigate the initial physiological effects of anti-pronation tape, specifically its neurophysiological (i.e. effect on muscle activation patterns) and biomechanical (i.e. effect on movement patterns, foot posture, foot mobility) effects. Thirdly this thesis aimed to investigate the duration of these initial physiological effects following tape removal. The fourth and fifth aims were to investigate the long term biomechanical and neurophysiological effects of anti-pronation taping i.e. following continual use over a clinically relevant period. In the first instance our aim was to investigate the effect of continual use on neuromotor control of gait, foot posture and foot mobility, and secondly to investigate the effect of continual use on the technique’s initial neurophysiological and biomechanical effects. Individuals with exercise related leg pain demonstrated lower activation of gluteus medius and lateral gastrocnemius during gait, but we observed no differences in lower limb movement patterns or foot posture and foot mobility between the two groups. The initial effect of tape was similar in individuals with and without exercise related leg pain. Specifically application of tape produced a reduction in activation of tibialis posterior, tibialis anterior and medial gastrocnemius, and increased activation of peroneus longus. There was a reduction in foot mobility, ankle plantarflexion and abduction excursion and an increase in ankle dorsiflexion and adduction excursion. Reduced muscle activation and increased motion was also observed at more proximal segments (knee, hip, pelvis), but were of smaller magnitude than at the foot and ankle. Changes in foot mobility, ankle kinematics and leg muscle activity did not continue following the removal of tape, but at more proximal segments (i.e. pelvis, hip and knee) small changes in kinematics and muscle activity were observed following the removal of tape. In regards to long term effects, continual use of tape for approximately 12 days produced a small increase in arch height when compared to a control. We did not observe a change in muscle activation or motion patterns, nor did continual use of the technique influence its initial neurophysiological or biomechanical effects (i.e. reduction in muscle activity, reduction in foot mobility, altered lower limb motion). The studies from this thesis provide evidence that anti-pronation tape should be considered in the management of individuals where reduced midfoot mobility, control of ankle motion or reduced activation of the leg muscles is desired, regardless of symptomatic status. When applied for approximately 12 days, anti-pronation tape produced a small increase in arch height ratio, but no alteration in neuromotor control. We are not aware of any definitive data on what constitutes a clinically meaningful increase in arch height, but results from a published case series suggests that our findings of a small increase in arch height may be clinically relevant for the treatment of lower extremity overuse injuries. Continual use of tape for a clinically relevant period does not alter its initial effects on foot posture and mobility or neuromotor control during gait. It would appear that the initial effects of anti-pronation tape are robust even after continuous use over a period of 11 days.
375

Kinematic analysis of the upper limb during anatomical and functional movements in healthy children

Dwan, Leanne Nicole, Safety Science, Faculty of Science, UNSW January 2009 (has links)
Impairments of upper limb function can negatively impact an individual???s ability to carry out everyday tasks. Children with cerebral palsy can have limitations of upper limb movement due to physiological and structural changes in their body. Current treatment regimes for children with upper limb involvement of cerebral palsy are assessed using a variety of qualitative assessment tools. These measures rely on subjective input from the assessor, and can be insensitive to significant functional improvements. Research methods in upper limb motion analysis are developing towards use as clinical tools. To date, there is a paucity of knowledge on the quantitative measures of range of motion (ROM) and function of upper limbs in healthy children. There is also lack of agreement on repeatable functional tasks of the upper limb for 3D measurement. The identification of a repeatable task in healthy children would facilitate the use of upper limb 3D motion analysis to guide clinical practice and improve patient outcomes. This thesis aims to describe upper limb joint range of movement in each degree of freedom and present normative three dimensional kinematic data of upper limb movement in healthy children during a repeatable upper limb functional task. This will provide a basis for comparison to children with movement disorders for future research and clinical practice. The UNSW kinematic upper limb model was found to successfully measure three dimensional upper limb anatomical and functional movements in healthy children. Normative kinematic data are reported for anatomical movements and two functional tasks. The results of the studies undertaken showed that differences in dominant and non-dominant limbs were present during anatomical and functional movements. Joint angles measured were found to be repeatable in healthy children. The results suggest that methods used were reliable for investigating upper limb kinematics. Functional movement time-series data were found to be repeatable for the group with the exception of wrist flexion/extension during the hand to mouth movement for both the dominant and non-dominant limbs. These findings improve current knowledge on upper limb kinematics in healthy children. This knowledge can assist the investigation of movement disorders in children to facilitate clinical decision making.
376

Kinematic analysis of the upper limb during anatomical and functional movements in healthy children

Dwan, Leanne Nicole, Safety Science, Faculty of Science, UNSW January 2009 (has links)
Impairments of upper limb function can negatively impact an individual???s ability to carry out everyday tasks. Children with cerebral palsy can have limitations of upper limb movement due to physiological and structural changes in their body. Current treatment regimes for children with upper limb involvement of cerebral palsy are assessed using a variety of qualitative assessment tools. These measures rely on subjective input from the assessor, and can be insensitive to significant functional improvements. Research methods in upper limb motion analysis are developing towards use as clinical tools. To date, there is a paucity of knowledge on the quantitative measures of range of motion (ROM) and function of upper limbs in healthy children. There is also lack of agreement on repeatable functional tasks of the upper limb for 3D measurement. The identification of a repeatable task in healthy children would facilitate the use of upper limb 3D motion analysis to guide clinical practice and improve patient outcomes. This thesis aims to describe upper limb joint range of movement in each degree of freedom and present normative three dimensional kinematic data of upper limb movement in healthy children during a repeatable upper limb functional task. This will provide a basis for comparison to children with movement disorders for future research and clinical practice. The UNSW kinematic upper limb model was found to successfully measure three dimensional upper limb anatomical and functional movements in healthy children. Normative kinematic data are reported for anatomical movements and two functional tasks. The results of the studies undertaken showed that differences in dominant and non-dominant limbs were present during anatomical and functional movements. Joint angles measured were found to be repeatable in healthy children. The results suggest that methods used were reliable for investigating upper limb kinematics. Functional movement time-series data were found to be repeatable for the group with the exception of wrist flexion/extension during the hand to mouth movement for both the dominant and non-dominant limbs. These findings improve current knowledge on upper limb kinematics in healthy children. This knowledge can assist the investigation of movement disorders in children to facilitate clinical decision making.
377

Kinematic analysis of the upper limb during anatomical and functional movements in healthy children

Dwan, Leanne Nicole, Safety Science, Faculty of Science, UNSW January 2009 (has links)
Impairments of upper limb function can negatively impact an individual???s ability to carry out everyday tasks. Children with cerebral palsy can have limitations of upper limb movement due to physiological and structural changes in their body. Current treatment regimes for children with upper limb involvement of cerebral palsy are assessed using a variety of qualitative assessment tools. These measures rely on subjective input from the assessor, and can be insensitive to significant functional improvements. Research methods in upper limb motion analysis are developing towards use as clinical tools. To date, there is a paucity of knowledge on the quantitative measures of range of motion (ROM) and function of upper limbs in healthy children. There is also lack of agreement on repeatable functional tasks of the upper limb for 3D measurement. The identification of a repeatable task in healthy children would facilitate the use of upper limb 3D motion analysis to guide clinical practice and improve patient outcomes. This thesis aims to describe upper limb joint range of movement in each degree of freedom and present normative three dimensional kinematic data of upper limb movement in healthy children during a repeatable upper limb functional task. This will provide a basis for comparison to children with movement disorders for future research and clinical practice. The UNSW kinematic upper limb model was found to successfully measure three dimensional upper limb anatomical and functional movements in healthy children. Normative kinematic data are reported for anatomical movements and two functional tasks. The results of the studies undertaken showed that differences in dominant and non-dominant limbs were present during anatomical and functional movements. Joint angles measured were found to be repeatable in healthy children. The results suggest that methods used were reliable for investigating upper limb kinematics. Functional movement time-series data were found to be repeatable for the group with the exception of wrist flexion/extension during the hand to mouth movement for both the dominant and non-dominant limbs. These findings improve current knowledge on upper limb kinematics in healthy children. This knowledge can assist the investigation of movement disorders in children to facilitate clinical decision making.
378

A biomechanical investigation of the effects of pregnancy on spinal motion and rising to stand from a chair

Gilleard, Wendy January 2001 (has links)
During pregnancy the female body must accommodate the enlarging gravid uterus and increased mass. Therefore the maternal musculoskeletal system is required to adapt in both morphology and functional workload. After childbirth there is a rapid change in both mass and dimensions, requiring further adaptations. The objectives of the study were to investigate seated and standing upper body posture, the kinematics of seated and standing trunk motion, and the three dimensional kinematics and kinetics during rising to stand from a chair, as pregnancy progressed and in the early post-birth period. Nine maternal subjects (aged 28 to 40 years) were tested at less than 16 weeks, 24 weeks, 30 weeks, 38 weeks gestation and at 8 weeks postbirth. The subjects, fitted with 37 retroreflective markers, were filmed during upright sitting, quiet standing, and four trials each of maximum seated and standing trunk forward flexion, side to side flexion and during maximum seated axial rotation. Three trials each of constrained and free rising to stand from a height adjustable stool and with each foot placed on a forceplate were also recorded. An eight-camera motion analysis system was used to record movements of the body segments and synchronised force plate variables in three dimensions. Motion of the ankle, knee and hip joints, pelvic, thoracic and head segments and the thoracolumbar and cervicothoracic spines and shoulder joints were investigated. Twelve nulliparous subjects (aged 21 to 35 years) were used as controls to provide standard descriptive data and to investigate the consistency of the selected biomechanical variables with repeated testing. A repeated measures ANOVA was used to investigate the possibility of linear and quadratic trends showing systematic changes within the maternal group, over the four test sessions during pregnancy for each variable. Two tailed Student t-tests were used to compare the maternal postbirth variable results with the control group. There was no significant effect of pregnancy on the upper body posture during upright sitting and quiet standing. Postbirth, the pelvic segment had a smaller anterior orientation and the thoracolumbar spine was less extended, indicating a flatter spinal curve. The maternal subjects were similar to the control subjects in early pregnancy and postbirth for trunk segment motions during seated and standing forward flexion and side to side flexion and seated axial rotation. Strategies, such as increasing the width of the base of support and reducing obstruction to movements from other body parts, were used in late pregnancy in attempts to minimise the effects of increased trunk mass and circumference. For seated and standing side to side flexion, the strategies were successful and no significant decreases in range of motion were seen. For seated and standing forward flexion and seated axial rotation, motion of the thoracic segment and the thoracolumbar spine were significantly reduced, although movement of the pelvis was less affected. In early pregnancy and postbirth the kinematics and kinetics of the lower limbs and upper body segment kinematics during constrained and free rising were generally similar to the control subjects. As pregnancy progressed there were increases in mass and dimensions of body segments. The effect of increased mass was seen in increased ground reaction forces and sagittal plane lower limb joint external moments. An increased base of support width was found in association with an increased lateral ground reaction force and ankle inversion moment from each foot, which would move the body centre of mass medially. There was little change in the three dimensional kinematics of the thoracolumbar and cervicothoracic spine, although the contribution of the upper body segments differed for each rise condition. There were also few significant changes in the displacement of the ankle, knee and hip, and the angular velocity of ankle and knee joints. The maternal subjects were thus able to flex the upper body forward, raise the body and maintain stability as pregnancy progressed, regardless of whether the rise to stand was performed in a natural manner or under constrained conditions. The overall results show that, contrary to expectations as pregnancy progressed, maternal subjects minimised propulsion rather than increasing it to overcome the increased mass and possibly limited trunk flexion. A fear of postural instability may have made the subjects more cautious and as they were able to adequately flex the trunk forward, propulsion was minimised in favour of maintaining upright terminal balance.
379

A biomechanical analysis of relationship between the head and neck position, vertebral column and limbs in the horse at walk and trot /

Rhodin, Marie, January 2008 (has links) (PDF)
Diss. (sammanfattning) Uppsala : Sveriges lantbruksuniversitet, 2008. / Härtill 4 uppsatser.
380

The design, construction and control of a four-degree-of-freedom hybrid parallel/serial motion platform for the calibration of multi-axis inertial measurement units

Hall, John J. January 2000 (has links)
Thesis (M.S.)--Ohio University, June, 2000. / Title from PDF t.p.

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