| 1. |
- Leavy, Breiffni, 1977-
(författare)
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Fall-Related Hip Fracture : Predisposing and Precipitating Factors
- 2015
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- A physically inactive lifestyle is a predisposing risk factor for fall-related hip fracture. The circumstances, or precipitating factors, surrounding hip fractures are, however, not well understood, a factor of relevance for Swedish adults who have one of the highest hip fracture risks in the world. The aims of this thesis, therefore, were: to explore perceptions of physical activity (PA) among older adults, to describe the circumstances surrounding hip fracture events and the health characteristics of those who experience them.Four observational studies were conducted involving qualitative, epidemiological and mixed method designs. Participants in study I were recruited from community settings in Stockholm and Dublin (n=30). Studies II-IV (sample sizes, n=484, n=125, n=477) were based on a population-based sample of people admitted to Uppsala University hospital due to hip fracture. Study IV also incorporated the background population of Uppsala county in 2010 (n=117 494).Analysis of PA perceptions in study I revealed that PA which is functional nature is perceived as most meaningful among certain participants. The uptake of PA in later years was a means of creating a new self-identify and being active in outdoor environments was an important culture-specific motivator to PA among Swedish participants. Analysis of hip fractures patterns in studies II-III showed that: hip fractures among psychotropic drug users were twice as likely to occur during night-time hours compared to those occurring among people not receiving these drugs. Additionally, the fall-related hip fractures of community dwellers with poorest health and function tended to occur indoors during positional changes. In study IV, all categories of disease (according to the International Classification of Diseases, 10th Revision) were seen to be positively associated with hip fracture. Cardiovascular disease and previous injury (including previous fracture) posed the highest relative and absolute fracture risks.Detailed investigation of hip fracture circumstances reveal patterns in health and functional characteristics, which provide information regarding predisposing and precipitating factors for these events. This knowledge, in combination with findings regarding PA perceptions, can be used when identifying individuals at high risk for hip fracture and when tailoring fracture prevention at an individual level to those at risk.
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| 2. |
- Cedervall, Ylva
(författare)
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Physical Activity and Alzheimer's Disease : Measurements, Observations and Subjective Experiences
- 2014
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Gait disturbances such as slow walking speed and step-to-step variability have been reported among people with mild Alzheimer’s disease (AD) and as risk factors for functional decline, dependency, and falls. Additionally, AD-related emotional reactions and decreased initiative can lead to physical inactivity. The aims of this thesis, therefore, were to explore how the ability to be physically active is affected in the early years of AD, and how people with mild AD and their cohabitants reason about physical activity as part of their everyday life.To meet the aims, an approach inspired by mixed methods research was used, covering measurements, observations and subjective experiences. Data were collected from different sources in parallel. Participants with mild AD were recruited at the Memory Clinic, Uppsala University Hospital. In Study I, a case study with two couples in which one member had AD, in-depth interviews and participating interviews were performed. Physical activity such as walking was viewed as a meaningful routine improving well-being. Participants were positive about making adjustments to enable physical activity. In Study II, the 25 participants with AD showed a significant lower walking capacity (10 m comfortable walk test, 6-minute walk test, Timed-up-and-Go test) at baseline compared to controls. The decline continued during the subsequent two years. The influence of a cognitive task on walking was distinct, despite this, participants maintained a health-promoting level of physical activity during the two-year study-period. In Study III, gait testing in the motor laboratory of 21 participants with AD showed a marked impact on gait parameters (e.g. slowed speed, decreased step length) by a cognitive task. Additionally, specific dual-task gait disturbances were frequent. In Study IV, in-depth interviews with 14 participants with AD indicated that physical activity was viewed as a meaningful activity, used as a means to maintain well-being and selfhood, and contributed to continuity in life.In conclusion, walking capacity deteriorates and declines in the early stages of AD. A simple cognitive task can have a substantially negative impact on walking already in mild AD. In contrast, people with AD can also gain “self-promoting benefits” from physical activity beyond the common health-promoting benefits.
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| 3. |
- Cedervall, Ylva, et al.
(författare)
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Timed Up-and-Go Dual-Task Testing in the Assessment of Cognitive Function : A Mixed Methods Observational Study for Development of the UDDGait Protocol
- 2020
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Ingår i: International Journal of Environmental Research and Public Health. - : MDPI. - 1661-7827 .- 1660-4601. ; 17:5
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Tidskriftsartikel (refereegranskat)abstract
- New methods to screen for and identify early-stage dementia disorders are highly sought after. The purpose of this pilot study is to develop a study protocol for a dual-task test aimed at aiding the early detection of dementia disorders. We used the Timed Up-and-Go (TUG) test, which is a mobility task involving starting in a sitting position, standing up, walking three meters to cross a line on the floor, turning around, walking back and sitting down again. We combined TUG with the verbal task of naming different animals. Pilot study participants were 43 individuals with and without established dementia diagnoses who attended a clinic for memory assessment. Video-recorded test performances were systematically analysed. Deviant test performances concerning the interplay between test administration and participants' responses to the assessment instructions were revealed and led to refinements being made to the final study protocol. Exploration of the dual-task test outcome measures in a sub-sample of 22 persons, ten with and twelve without dementia, indicated that step-length and number of named animals after the turning point of the dual-task test might constitute appropriate measures for examining this kind of sample. We concluded that the refined study protocol is feasible for testing individuals undergoing initial memory assessments and healthy controls. Follow-up studies with larger samples are being carried out and will bring new knowledge to this area of research. It may also provide an opportunity for further studies exploring possibilities for broad clinical implementation.
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| 4. |
- Karlsson, Åsa, 1972-
(författare)
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Team-based home rehabilitation after hip fracture in older adults : effects, experiences and impact of dementia
- 2021
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- BACKGROUND: For an older adult a hip fracture may be a traumatic and life-changing event and has shown to be associated with reduced health-related quality of life, disability and increased mortality. Previous rehabilitation studies have often excluded older adults with cognitive impairment and those living in residential care facilities, groups with an additional risk of poor outcome. Moreover, there are few randomized controlled trials that have evaluated interdisciplinary home rehabilitation after hip fracture. These studies did not include older adults with severe cognitive impairment or dementia, those with serious medical conditions, or those living in residential care.OBJECTIVE: The aim of the thesis was to investigate the effects of early discharge followed by geriatric interdisciplinary home rehabilitation (GIHR) for older adults with hip fracture, and specifically among those with dementia, compared to in-hospital geriatric care according to a multifactorial rehabilitation program. An additional aim was to explore how older adults experienced their rehabilitation and recovery during the year following the fracture.METHODS: The thesis evaluated a randomized controlled trial that included 205 participants with hip fracture, 70 years or older, living in ordinary housing or residential care facilities. In hospital, both the GIHR and control groups received care and rehabilitation according to a multifactorial rehabilitation program, but with the aim of early discharge for the GIHR group. The individually designed GIHR intervention focused on walking ability indoors and outdoors, independence in activities of daily living (ADL), and multifactorial fall prevention during a maximum period of 10 weeks. Participants were assessed in-hospital and at 3- and 12-month follow-up visits. Independence in walking and use of walking aids was assessed via an interview along with gait speed tests. Independence in ADL was measured using the Barthel ADL Index, and the ADL Staircase including the Katz ADL Index, and hospital length of stay (LOS) was recorded from medical charts. The effects of GIHR intervention among participants with dementia were investigated in a post hoc subgroup analysis where additional outcomes were falls, mortality and readmissions between discharge and 12 months. Individual interviews were conducted with 20 selected participants just after the 12-month follow-up. Data were analysed using qualitative content analysis.RESULTS: The postoperative hospital LOS was significantly reduced by a median of six days in the GIHR group compared to the control group, although not significantly reduced in the GIHR group for participants with dementia. Binary logistic regression analyses revealed no significant differences between the GIHR and control groups regarding independent walking ability, the ability to walk without a walking device, or independence in ADL at 3 and 12 months. Gait speed was comparable between the two groups at 3 and 12 months. At 12 months, 56% in the GIHR group and 58% in the control group had recovered their prefracture walking ability, and 41% vs. 42% in GIHR and control groups, respectively, had regained their prefracture Barthel ADL Index score. Interaction analyses showed that the GIHR group vs. the control group had comparable effects on walking ability and ADL at 3 and 12 months, and on falls and mortality between discharge and 12 months, regardless of whether the participants had dementia or not (P≥0.05 for all). The number of readmissions and hospital days after discharge was comparable between GIHR and control groups for participants with dementia. Overall, dementia was associated with significantly impaired walking ability and greater dependence in ADL at 3 and 12 months and with increased risk of falling and increased mortality between discharge and 12 months compared to participants without dementia. The interviews revealed that access to rehabilitation, provided by skilled staff, and support from others were important for participants’ well-being and recovery. Participants experienced a fundamental change in their self-image after the fracture, and faced a number of difficulties, but strove for independence and used adaptive strategies to find contentment in their lives.CONCLUSIONS: In older adults with hip fracture, early discharge followed by interdisciplinary home rehabilitation significantly reduced postoperative hospital LOS. Functional recovery during the year following the fracture was nevertheless comparable to in-hospital geriatric care according to a multifactorial rehabilitation program. The GIHR intervention seems to be appropriate also for older adults with dementia since the effects were not different in this subgroup, except for postoperative hospital LOS, which was not significantly reduced in the GIHR group for participants with dementia. Further studies with larger samples are needed to validate these results. Overall, dementia was associated with a substantial negative impact on the outcomes. According to participants’ experiences, receiving rehabilitation and support after the hip fracture seems crucial for successful recovery. Negative psychological reactions were common, suggesting that future interventions should consider both physical and psychological aspects. Different rehabilitation alternatives were appreciated by the participants. Rehabilitation should thus be customised to suit wishes and needs of older adults and may accordingly be carried out in different settings, where rehabilitation in the home can be one suitable alternative. The findings of this thesis indicate that geriatric interdisciplinary home rehabilitation after hip fracture can be an alternative and a complement to in-hospital care and rehabilitation for older adults with and without dementia.
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| 5. |
- Kullberg, Kerstin, 1953-
(författare)
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Food in older men with somatic diseases : Eating habits and approaches to food-related activities
- 2009
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The overall aim was to improve the knowledge and understanding of eating habits of older men with somatic diseases, and the men's perceptions about managing food-related habits, such as grocery shopping and cooking. A total of 67 men between 64 and 89 years of age were visited in their homes on two occasions with 1-2 weeks in between. The participants were diagnosed with one of the three diseases Parkinson’s disease, rheumatoid arthritis, or stroke. A food survey, with repeated 24-h recall, was used to assess food intake and meal patterns. Interviews with 18 participants were conducted with open-ended questions. The interviews were further analysed with a thematic framework approach.The findings showed that eating events were distributed over a 24-h period.Further, co-living men had a significantly larger number of eating events over the day (p=0.001). No differences in daily energy intake were observed between co-living and single-living men. Co-living men’s hot eating events were compared with those of single-living men more often cooked from fresh ingredients (p=0.001), including a greater mix of vegetables/roots (p=0.003).Thematic analysis revealed three different approaches to food-related activities(FRA), namely ‘Cooking as a pleasure’, describing joy in cooking; ‘Cooking as a need’, indicating no habits or skills in cooking; and ‘Food is served’, that is, being served meals by a partner. The men's approaches to FRA were affected in particular by gender-related roles, but also by changed life circumstances, activity limitations, personal interests, and a wish to maintain continuity and independence. Further adaptive strategies were used among the men in attempts to maintain continuity and independence in FRA. In conclusion, single-living older men, especially those with activity limitations, were identified as being a vulnerable group from a nutritional perspective. Further, health care efforts in promoting FRA should preferably be individualised with respect to the older man’s approach to these activities.
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| 6. |
- Åberg, Anna Cristina, et al.
(författare)
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Dual-Task Interference of Gait Parameters During Different Conditions of the Timed Up-and-Go Test Performed by Community-Dwelling Older Adults
- 2023
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Ingår i: Journal of Aging and Physical Activity. - : Human Kinetics. - 1063-8652 .- 1543-267X. ; 31:5, s. 823-832
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Tidskriftsartikel (refereegranskat)abstract
- The Timed Up-and-Go (TUG) test has been combined with different verbal/cognitive tasks (i.e., TUG dual task [TUGdt]) as a form of motor-cognitive testing. However, it is still unclear how different TUGdt conditions affect gait among older adults. Thirty community-dwelling older adults, with mean age of 73 years, participated in the study. Data were collected using marker-free video recordings. Gait parameters were extracted using a semiautomatic deep learning system. Comparisons of execution time and gait parameter outcomes were made under TUG and three types of TUGdt test conditions: TUGdt-naming animals, TUGdtmonths backwards, and TUGdt-serial 7s. Statistical analyses were based on mean values of the gait parameters for each participant and TUG condition, including TUGdt gait cost, that is, the relative difference between TUGdt and TUG. All the investigated TUGdt conditions resulted in varying degrees of gait parameter changes. Under TUGdt conditions, participants took shorter and slower steps, with TUGdt-serial 7s causing the largest interference.
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| 7. |
- Åberg, Anna Cristina, 1956-
(författare)
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General Motor Function Assessment and Perceptions of Life Satisfaction during and after Geriatric Rehabilitation
- 2003
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Two main goals of geriatric rehabilitation are to re-establish ability for physical function in order to facilitate independence in activities of daily living (ADL), and to promote an optimal degree of well-being, i.e. life satisfaction, in the individual. In this research a new scale, the General Motor Function assessment scale (GMF), was developed and evaluated. Subsequently, factors perceived as important for the life satisfaction of people undergoing geriatric rehabilitation were investigated. The GMF includes both mobility and upper limb functions and comprises three subscales covering different aspects of functioning, namely performance-related Dependence, Pain and Insecurity. The clinical practicality of the GMF was evaluated by a field test. Its psychometric properties were analysed in both hospital and community-based settings of geriatric rehabilitation, using non-parametric statistical methods. The results indicated that the GMF is clinically adequate, possesses good reliability and is sensitive enough to demonstrate changes from pre- to post-intervention in different forms of geriatric rehabilitation. For investigation of perceptions of life satisfaction, individual qualitative interviews were conducted with old (80+) care recipients and with their significant others, who had a helping relationship with them. The results revealed that habitual activity, independence and adaptation were generally considered to be important for the life satisfaction of the care recipients. Recalling of pleasant past memories in an effort to achieve current life satisfaction was a commonly used adaptive strategy among the care recipients. This strategy created a temporary sense of life satisfaction, with a potential for concealing dissatisfaction with conditions that might otherwise be correctable. From the perspective of the significant others, protection of the continuity of the care recipients’ self was seen as vital for the latter's life satisfaction, and was thus an underlying general purpose of the informal caregiving.
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| 8. |
- Åhman, Hanna Bozkurt, et al.
(författare)
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Dual-task performance and neurodegeneration : Correlations between timed up-and-go dual-task test outcomes and Alzheimer's disease cerebrospinal fluid biomarkers
- 2019
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Ingår i: Journal of Alzheimer's Disease. - : IOS Press. - 1387-2877 .- 1875-8908. ; 71:Suppl 1, s. S75-S83
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Tools to identify individuals at preclinical stages of dementia disorders are needed to enable early interventions. Alterations in dual-task performance have been detected early in progressive neurodegenerative disorders. Hence, dual-task testing may have the potential to screen for cognitive impairment caused by neurodegeneration. Exploring correlations between dual-task performance and biomarkers of neurodegeneration is therefore of interest.OBJECTIVE: To investigate correlations between Timed Up-and-Go dual-task (TUGdt) outcomes and Alzheimer's disease (AD) cerebrospinal fluid (CSF) biomarkers amyloid-β 42 (Aβ42), total tau (t-tau), and phosphorylated tau (p-tau).METHODS: This cross-sectional cohort study included 90 participants (age range 49-84 years) undergoing memory assessment, who were subsequently diagnosed with AD, other dementia disorders, mild cognitive impairment, or subjective cognitive impairment. TUG combined with "Naming Animals" (TUGdt NA) and "Months Backwards" (TUGdt MB), respectively, were used to assess dual-task performance. The number of correct words and time taken to complete the tests were measured. The CSF biomarkers were analysed by ELISA. Spearman's rank correlation was used for analyses between TUGdt outcomes (TUGdt NA and TUGdt MB), and CSF biomarkers, adjusted for age, gender, and educational level.RESULTS: The number of correct words, as well as the number of correct words/10 s during TUGdt NA correlated negatively to CSF t-tau and p-tau. No correlations were found between any time scores and CSF biomarkers.CONCLUSION: The correlations between TUGdt NA and t-tau and p-tau may indicate that neurodegeneration affects dual-task performance. Longitudinal studies are needed to further explore dual-task testing in screening for cognitive impairment due to neurodegeneration.
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| 9. |
- Åhman, Hanna Bozkurt, et al.
(författare)
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Dual-task tests discriminate between dementia, mild cognitive impairment, subjective cognitive impairment, and healthy controls : a cross-sectional cohort study
- 2020
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Ingår i: BMC Geriatrics. - : Springer Science and Business Media LLC. - 1471-2318. ; 20:1
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Discrimination between early-stage dementia and other cognitive impairment diagnoses is central to enable appropriate interventions. Previous studies indicate that dual-task testing may be useful in such differentiation. The objective of this study was to investigate whether dual-task test outcomes discriminate between groups of individuals with dementia disorder, mild cognitive impairment, subjective cognitive impairment, and healthy controls.METHODS: A total of 464 individuals (mean age 71 years, 47% women) were included in the study, of which 298 were patients undergoing memory assessment and 166 were cognitively healthy controls. Patients were grouped according to the diagnosis received: dementia disorder, mild cognitive impairment, or subjective cognitive impairment. Data collection included participants' demographic characteristics. The patients' cognitive test results and diagnoses were collected from their medical records. Healthy controls underwent the same cognitive tests as the patients. The mobility test Timed Up-and-Go (TUG single-task) and two dual-task tests including TUG (TUGdt) were carried out: TUGdt naming animals and TUGdt months backwards. The outcomes registered were: time scores for TUG single-task and both TUGdt tests, TUGdt costs (relative time difference between TUG single-task and TUGdt), number of different animals named, number of months recited in correct order, number of animals per 10 s, and number of months per 10 s. Logistic regression models examined associations between TUG outcomes pairwise between groups.RESULTS: The TUGdt outcomes "animals/10 s" and "months/10 s" discriminated significantly (p < 0.001) between individuals with an early-stage dementia diagnosis, mild cognitive impairment, subjective cognitive impairment, and healthy controls. The TUGdt outcome "animals/10 s" showed an odds ratio of 3.3 (95% confidence interval 2.0-5.4) for the groups dementia disorders vs. mild cognitive impairment. TUGdt cost outcomes, however, did not discriminate between any of the groups.CONCLUSIONS: The novel TUGdt outcomes "words per time unit", i.e. "animals/10 s" and "months/10 s", demonstrate high levels of discrimination between all investigated groups. Thus, the TUGdt tests in the current study could be useful as complementary tools in diagnostic assessments. Future studies will be focused on the predictive value of TUGdt outcomes concerning dementia risk for individuals with mild cognitive impairment or subjective cognitive impairment.
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| 10. |
- Åhman, Hanna Bozkurt, et al.
(författare)
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Dual-Task Tests Predict Conversion to Dementia-A Prospective Memory-Clinic-Based Cohort Study
- 2020
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Ingår i: International Journal of Environmental Research and Public Health. - : MDPI AG. - 1661-7827 .- 1660-4601. ; 17:21
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to investigate whether Timed Up-and-Go (TUG) dual-task (TUGdt) tests predict dementia incidence among patients with subjective or mild cognitive impairment (SCI; MCI). Other study objectives were to determine whether TUGdt improves dementia prediction compared to a) demographic characteristics and standard cognitive tests alone; and b) TUG and Verbal Fluency performed separately. Patients (n = 172, age range 39-91 years, 78 women) with SCI or MCI performed TUGdt tests, including 1) naming animals and 2) reciting months backwards, and clinical cognitive tests at baseline. Diagnoses were identified at follow-up after 2.5 years. Logistic regression was used to predict dementia incidence, receiver operating characteristic (ROC) curves and c-statistics for predictive capacity. Analyses were stratified by age and gender. At follow-up, 51 patients had developed dementia. The TUGdt result "animals/10 s" was associated with dementia incidence (standardized odds ratio (OR) = 4.06, 95% confidence interval (CI) 2.28-7.23, p < 0.001), more so among patients under the median age of 72 years (standardized OR = 19.4, 95% CI 3.53-106.17, p < 0.001). TUGdt "animals/10 s" improved dementia prediction compared to demographic characteristics and standard tests alone (c-statistics 0.88 to 0.94) and single-task tests (c-statistics 0.86 to 0.89), but only in the younger patient group. TUGdt has the potential to become a useful tool for dementia prediction.
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