Yes / Passive prosthetic devices are set up to provide optimal function at customary walking speed and thus may function less effectively at other speeds. This partly explains why joint kinetic adaptations become more apparent in lower-limb amputees when walking at speeds other than customary. The present study determined whether a trans-tibial prosthesis incorporating a dynamic-response foot that was attached to the shank via an articulating hydraulic device (hyA-F) lessened speed-related adaptations in joint kinetics compared to when the foot was attached via a rigid, non-articulating attachment (rigF). Eight active unilateral trans-tibial amputees completed walking trials at their customary walking speed, and at speeds they deemed to be slow-comfortable and fast-comfortable whilst using each type of foot attachment. Moments and powers at the distal end of the prosthetic shank and at the intact joints of both limbs were compared between attachment conditions. There was no change in the amount of intact-limb ankle work across speed or attachment conditions. As speed level increased there was an increase on both limbs in the amount of hip and knee joint work done, and increases on the prosthetic side were greater when using the hyA-F. However, because all walking speed levels were higher when using the hyA-F, the intact-limb ankle and combined joints work per meter travelled were significantly lower; particularly so at the customary speed level. This was the case despite the hyA-F dissipating more energy during stance. In addition, the amount of eccentric work done per meter travelled became increased at the residual knee when using the hyA-F, with increases again greatest at customary speed. Findings indicate that a trans-tibial prosthesis incorporating a dynamic-response foot reduced speed-related changes in compensatory intact-limb joint kinetics when the foot was attached via an articulating hydraulic device compared to rigid attachment. As differences between attachment conditions were greatest at customary speed, findings indicate a hydraulic ankle-foot device is most effectual at the speed it is set-up for.

No description available.

No description available.

No / Person-centred care (PCC) is recommended when working with patients with neurological difficulties. Despite this, to date there has been no appropriate methodology for assessing or developing PCC in neurorehabilitation settings. Dementia Care Mapping (DCM) is a well-established tool for assessing and developing PCC in dementia settings and the current study investigated the feasibility of applying DCM on an acute neurorehabilitation ward. DCM procedure and coding required minor adaptations for use in this setting and further recommended adaptations were subsequently identified. It was found that the DCM coding system was generally suitable and could identify strengths, weaknesses and areas for development in ward care. Q-methodology identified that staff views endorsed the feasibility of using DCM in neurorehabilitation, with staff reporting that they found DCM useful and relevant to their work. DCM could be further developed for this setting by amendments to the behaviour coding system, concept and coding of person-centred care, and a population-specific manual. DCM is a promising methodology to develop and promote PCC in neurorehabilitation.

No / Most research on partners' experiences of living with a person with MND is questionnaire-based with no qualitative study focusing on the period between diagnosis and end-of-life care. This study aimed to provide an in-depth qualitative exploration of the experience of living with, and caring for, a partner with MND. Semi-structured interviews were conducted with eight individuals, and transcripts analysed from an interpretative phenomenological perspective. Two main themes were derived. 'Impact on life' included having concern for partner's safety, having social restrictions, being continually tired, struggling with anger and frustration, loss of intimacy and uncertainty around the future; while 'Adjusting to the situation' included trying to be strong, retaining a sense of normality, appreciation of specialist services, adopting a problem-solving approach, living day to day and ability to remain positive. In conclusion, experiences of stress and loss are illustrated in this sample of partners of those with MND, and it is suggested both these aspects should be integrated into understanding of carers' experiences. Carers appear to inhibit their grief in order to appear strong. Greater understanding of the consequences of this would help in providing appropriate emotional support.

No / This article explores how married couples managed their finances and made financial decisions when one spouse had dementia, drawing comparisons with the approaches used prior to the illness. More specifically, the article examines the role of social factors in influencing the involvement of people with dementia in financial management and decision-making, particularly whether a gender dynamic adopted earlier in a marriage similarly influenced a gendered approach following dementia. The research formed part of a larger study of everyday decision-making by couples living with dementia which explored the role of non-cognitive factors in influencing whether people with dementia were involved in decision-making processes. Twenty-one married couples living at home took part; the recently-diagnosed were excluded. Qualitative methods -including participant observation and interviews - were used to examine the couples' fiscal management and decision-making-processes, the perceptions of people with dementia and their spouses about their current financial abilities and whether any support provided by spouse-carers influenced their partners' financial capacity. The fieldwork was undertaken in the North of England between June 2010 and May 2011. Thematic analysis of the data showed that social factors influenced the perceived capacity of people with dementia and the financial practices adopted by the couples. In particular, gender influenced whether people with dementia were involved in financial decisions. The research demonstrated that non-cognitive factors need to be taken into account when assessing and facilitating the capacity of people with dementia. In addition, as people with dementia were somewhat marginalised in decisions about designating financial authority (Lasting Power of Attorney), spouse-carers may need guidance on how to undertake advance care planning and how to support their relatives with dementia in major decision-making, particularly when there are communication difficulties.

Text in English / The purpose of this study was to gain a richer understanding of midlife experiences. Midlife is stereotypically viewed as a crisis and is one of the least studied, most illdefined stages in life, yet it’s one of the most significant stages. The epistemological framework for this study is post modernism, which allows for this study to document the transitions from crisis at midlife, as seen through the lens of Positive Psychology. This study was exploratory in nature and applied a qualitative ethnographic methodology. Six participants were interviewed from an ethnographic perspective, in an endeavour to allow each participant accordant ontological breadth and flexibility within their respective social and ideological contexts. The researcher’s own social context also adding nuance to the interpretation of data. This interpretation allows for the inclusion of hope, wisdom, creativity, future mindedness, courage, spirituality, responsibility and perseverance. Thematic analysis of these participants’ narratives supports the psychological research which suggests that challenges are associated with midlife. Thematic analysis revealed challenges associated with midlife such as feelings of disillusionment, regret and dissatisfaction; feelings of loneliness, rejection and isolation as well as confusion about the way forward; seeking a meaningful existence and connection as well as achievement. Some participants, however, are in denial of the existence or their experience of midlife and associated challenges, whereas others describe midlife as a transition phase — a crossroads, a wake-up call and time for reassessment Although midlife can be a difficult transitional period, Positive Psychology can help individuals identify and build the necessary resources and coping strategies to prevent a transition turning into a crisis. It was shown that most participants in this research displayed a mindset and attitude open to a Positive Psychology paradigm to accumulate the necessary resources and coping strategies to prevent a midlife transition from becoming a midlife crisis. / Psychology / M.A. (Psychology)

Thesis (MA)--University of Stellenbosch, 2011. / Please refer to full text to view abstract.

PURPOSE: Gait during obstacle negotiation is adapted in visually normal subjects whose vision is temporarily and unilaterally blurred or occluded. This study was conducted to examine whether gait parameters in individuals with long-standing deficient stereopsis are similarly adapted. METHODS: Twelve visually normal subjects and 16 individuals with deficient stereopsis due to amblyopia and/or its associated conditions negotiated floor-based obstacles of different heights (7-22 cm). Trials were conducted during binocular viewing and monocular occlusion. Analyses focused on foot placement before the obstacle and toe clearance over it. RESULTS: Across all viewing conditions, there were significant group-by-obstacle height interactions for toe clearance (P < 0.001), walking velocity (P = 0.003), and penultimate step length (P = 0.022). Toe clearance decreased (approximately 0.7 cm) with increasing obstacle height in visually normal subjects, but it increased (approximately 1.5 cm) with increasing obstacle height in the stereo-deficient group. Walking velocity and penultimate step length decreased with increasing obstacle height in both groups, but the reduction was more pronounced in stereo-deficient individuals. Post hoc analyses indicated group differences in toe clearance and penultimate step length when negotiating the highest obstacle (P < 0.05). CONCLUSIONS: Occlusion of either eye caused significant and similar gait changes in both groups, suggesting that in stereo-deficient individuals, as in visually normal subjects, both eyes contribute usefully to the execution of adaptive gait. Under monocular and binocular viewing, obstacle-crossing performance in stereo-deficient individuals was more cautious when compared with that of visually normal subjects, but this difference became evident only when the subjects were negotiating higher obstacles; suggesting that such individuals may be at greater risk of tripping or falling during everyday locomotion.

In this study human color constancy was tested for two-dimensional (2D) and three-dimensional (3D) setups with real objects and lights. Four different illuminant changes, a natural selection task and a wide choice of target colors were used. We found that color constancy was better when the target color was learned as a 3D object in a cue-rich 3D scene than in a 2D setup. This improvement was independent of the target color and the illuminant change. We were not able to find any evidence that frequently experienced illuminant changes are better compensated for than unusual ones. Normalizing individual color constancy hit rates by the corresponding color memory hit rates yields a color constancy index, which is indicative of observers' true ability to compensate for illuminant changes.