Forskningsartikler

Abstract:

Objective: The objective of this study was to investigate whether a 5-year exercise intervention and change in peak oxygen uptake (VO2peak) is associated with cognitive function in older adults.

Methods: Nine hundred and forty-five participants (48% women, mean age at study end 78.2 ± 2.02 years) from the Generation 100 Study were randomized 2:1:1 to a control group, moderate-intensity continuous training or high-intensity interval training twice weekly for 5 years. Peak oxygen uptake was measured using ergospirometry at baseline and after 5 years. Global cognition and mild cognitive impairment (MCI) were assessed with the Montreal Cognitive Assessment scale (MoCA) after 5 years.

Results: Compared to the control group, the combined moderate-intensity continuous training plus high-intensity interval training (ExComb) group did not have significantly different cognitive scores (beta value 0.26, 95% confidence interval [CI] − 0.17, 0.69) or odds of MCI (odds ratio 0.86, 95% CI 0.66, 1.13). Men in the ExComb group had 0.80 points higher MoCA (95% CI 0.21, 1.40) and 32% lower odds of MCI compared with male controls (95% CI 0.47, 0.99), with no such findings in women. In the total sample, each 1 metabolic equivalent of task increase in VO2peak corresponded to 0.46 points higher MoCA (95% CI 0.25, 0.67) and 27% lower odds of MCI (95% CI 0.63, 0.85). Compared to VO2peak stable, participants whose VO2peak increased did not have significantly different cognitive scores (beta value 0.24, CI − 0.68, 1.15) or odds of MCI (odds ratio 0.70, 95% CI 0.36, 1.34), whereas participants whose VO2peak decreased had 0.64 points lower MoCA (95% CI − 1.15, − 0.14) and 35% higher odds of MCI (95% CI 0.98, 1.87).

Conclusions: Overall, exercise was not significantly associated with cognition among older adults. However, maintaining or increasing [Formula: see text] appeared to benefit cognition.

Ekaterina Zotcheva, Asta Kristine Håberg, Ulrik Wisløff, Øyvind Salvesen, Geir Selbæk, Dorthe Stensvold, Linda Ernstsen

Abstract:

Introduction: Person-centred care is a philosophy rather than a method ready for implementation and utilization in daily clinical work. Internationally, few methods for person-centred care have been widely adopted in clinical dementia care practice. In Norway, the VIPS practice model is one that is commonly used for the implementation and use of person-centred care in primary healthcare.

Method: Nursing home physicians, managers and leaders in the municipalities, care institutions and domestic nursing care services were eligible for inclusion if their workplace had implemented and used the VIPS practice model for a minimum of 12 months. Individual interviews were conducted via Facetime, Skype or telephone and analysed with qualitative content analysis.

Findings: In all, 20 respondents were included: one manager of health and care services in the municipality, six managers and leaders working in domestic care or daytime activity centres and 10 managers/leaders and three physicians working in nursing homes. Two global categories emerged: category 1: Change in staff’s professional reasoning with two sub-categories: (a) an enhanced professional level in discussions and (b) a change in focus from task to person; and category 2: Changes in the clinical work, with three sub-categories: (a) effective interventions, (b) a person-centred work environment and (c) changes in cooperation between stakeholders.

Conclusion: Regular use of the VIPS practice model appeared to change the work culture for the benefit of both service users and frontline staff. Increased cooperation between frontline staff, nurses, physicians and next of kin was described. Staff were more focused on the needs of the service users, which resulted in care interventions tailored to the needs of the individual with dementia, loyalty to care plans and fewer complaints from next of kin.

Marit Mjørud and Janne Røsvik

Abstract:
Background: The research on associations between gait, physical function, physical activity (PA), and cognitive function is growing. Still, clinical assessments of cognitive function and motor function is often kept separate. In this study, we aimed to look at a broad range of measures of gait, physical function, and PA in three groups of home-dwelling older adults with no or questionable dementia, mild dementia, and moderate/severe dementia.

Methods: This cross-sectional study included 100 home-dwelling older adults, recruited from an outpatient geriatric memory clinic. Severity of dementia was categorised using the clinical dementia rating scale (CDR), with no or questionable dementia (CDR score 0 and 0.5), mild dementia (CDR score 1) and moderate/severe dementia (CDR score 2 and 3). We used thigh worn accelerometers to measure daily PA, the Short Physical Performance Battery (SPPB) to measure physical function, and an electronic gait mat to evaluate gait characteristics. Associations between severity of dementia and measures of PA, physical function, and gait characteristics were assessed by linear regression.

Results: Participants’ (mean age 78.9 (SD 6.7) years, 57% women) average gait speed was 0.93 m/sec, and average upright time was 301 min/day. Statistically significant associations were found for the severity of dementia and gait speed (p=0.002), step time (p=0.001), physical function (SPPB, p=0.007), and PA (upright time, p=0.031), after adjusting for age. Overall, having no or questionable dementia was associated with faster gait speed (mean difference 0.163 (95% CI: 0.053 to 0.273)), shorter step time (-0.043 (-0.082 to -0.005)), better SPPB score (1.7 (0.5 to 2.8)), and longer upright time (78.9 (18.9 to 139.0)), compared to those with mild dementia. Furthermore, having no or questionable dementia was also associated with faster gait speed and better SPPB scores, as compared to those with moderate to severe dementia. No evidence of any differences was found between the participants with the mild dementia versus the moderate to severe dementia.

Conclusions: After adjusting for age, we found that the no or questionable dementia group to be associated with better gait and physical function, and more PA, as compared with the two groups with mild or moderate/severe dementia. Evaluation of gait, physical function, and PA can add clinically important information of everyday functioning in memory clinics meeting geriatric patients, but investigations on how to use these results to guide interventions are still needed.

Kristin Taraldsen, Jorunn L Helbostad, Turid Follestad, Sverre Bergh, Geir Selbæk, Ingvild Saltvedt

Abstract: About 50% of patients with cancer are expected to need radiotherapy (RT), and the majority of these are older. To improve outcomes for older patients with cancer, geriatric assessment (GA) with management (GAM) is highly recommended. Evidence for its benefits is still scarce, in particular for patients receiving RT. We report the protocol of a cluster-randomised pilot study designed to test the effect, feasibility and health economic impact of a GAM intervention for patients ≥65 years, referred for palliative or curative RT. The randomising units are municipalities and city districts. The intervention is municipality-based and carried out in collaboration between hospital and municipal health services from the start of RT to eight weeks after the end of RT. Its main constituents are an initial GA followed by measures adapted to individual patients’ impairments and needs, systematic symptom assessments and regular follow-up by municipal cancer nurses, appointed to coordinate the patient’s care. Follow-up includes at least one weekly phone call, and a house call four weeks after the end of RT. All patients receive an individually adapted physical exercise program and nutritional counselling. Detailed guidelines for management of patients’ impairments are provided. Patients allocated to the intervention group will be compared to controls receiving standard care. The primary outcome is physical function assessed by the European Organisation of Research and Treatment of Cancer Quality of Life Questionnaire C-30. Secondary outcomes are global quality of life, objectively tested physical performance and use of health care services. Economic evaluation will be based on a comparison of costs and effects (measured by the main outcome measures). Feasibility will be assessed with mixed methodology, based on log notes and questionnaires filled in by the municipal nurses and interviews with patients and nurses. The study is carried out at two Norwegian RT centres. It was opened in May 2019. Follow-up will proceed until June 2022. Statistical analyses will start by the end of 2021. We expect the trial to provide important new knowledge about the effect, feasibility and costs of a GAM intervention for older patients receiving RT. Trial registration: ClinTrials.gov, ID.

Inga Røyset, Ingvild Saltvedt, Siri Rostoft, Bjørn Henning Grønberg, Øyvind Kirkevold, Line Oldervoll, Asta Bye, Jūratė Šaltytė Benth, Sverre Bergh, Line Melby, Vidar Halsteinli, Øystein Døhl, Tove Røsstad, Guro Falk Eriksen, May Ingvild Volungholen Sollid, Darryl Rolfson, Marit Slaaen

Background: Patients with Alzheimer’s disease (AD) show heterogeneity in clinical progression rate, and we have limited tools to predict prognosis. Amyloid burden from 18F-Flutemetamol positron emission tomography (PET), as measured by standardized uptake value ratios (SUVR), might provide prognostic information.

Objective: We investigate whether 18F-Flutemetamol PET composite or regional SUVRs are associated with trajectories of clinical progression.

Methods: This observational longitudinal study included 94 patients with clinical AD. PET images were semi-quantified with normalization to pons. Group-based trajectory modeling was applied to identify trajectory groups according to change in the Clinical Dementia Rating Scale Sum of Boxes (CDR-SB) over time. Multinomial logistic regression models assessed the association of SUVRs with trajectory group membership.

Results: Three trajectory groups were identified. In the regression models, neither composite nor regional SUVRs were associated with trajectory group membership.

Conclusion: There were no associations between CDR progression and 18F-Flutemetamol PET-derived composite SUVRs or regional SUVRs in clinical AD.

Ebba Gløersen Müller, Trine Holt Edwin, Bjørn Heine Strand, Caroline Stokke, Mona Elisabeth Revheim, Anne-Brita Knapskog

Objective: The aim of the study was to determine if systolic blood pressure (SBP), total-tau (t-tau), and beta-amyloid (Aβ) in the cerebral spinal fluid (CSF) were associated with the results on the Consortium to Establish a Registry for Alzheimer’s Disease Word List (CERAD-WL) immediate and delayed recall, and the Mini Mental State Examination (MMSE) in “younger” older adults, controlling for age and sex.
Method: We included 72 participants, mean age: 62.9 (SD 8.6, range 41–76) from a Norwegian memory clinic; eight were diagnosed with subjective cognitive decline, 32 with mild cognitive impairment (MCI), 30 with dementia of the Alzheimer’s type (DAT), and two with combined DAT and vascular dementia (VaD). Data were examined in three fitted multiple linear regression models using the CERAD-WL immediate and delayed recall, and MMSE as dependent variables; and SBP, t-tau, and Aβ as independent variables, controlling for age and sex.

Results: The strongest associations were found in the model using CERAD-WL delayed recall as the dependent variable, where 45% of the variance was explained (standardized Beta = −0.313, p = 0.004 for t-tau and standardized Beta −0.238, p = 0.01 for SBP). The unique contribution of age was close to 8%, t-tau close to 7%, and SBP above 5%. When cardiovascular medication was entered into the analysis, the explained variance increased to 51% and Aβ became significant (standardized Beta = 0.216, p = 0.03). Participants on this medication exhibited worse performance on CERAD-WL delayed recall than those who were not on medication. Age (7%), t-tau (6%), and SBP (5%) showed the same unique contribution, whereas medication contributed 6% and Aβ contributed 4%. CERAD-WL immediate recall, and MMSE yielded similar findings, but explained variance was poorer for these two variables.

Conclusions: Both elevated SBP and t-tau were associated with poorer cognitive performance, especially delayed recall. Those on cardiovascular medication were more impaired than were participants who were not on this medication—a finding that probably reflected cerebral incidents in the medicated group.

Knut Asbjørn Hestad, Peter Otto Horndalsveen and Knut Engedal

Abstarct:
Mobilization is an interprofessional task in the evidence-based care pathway ‘Enhanced Recovery After Surgery’; multiple health professionals collaborate when mobilizing patients with hip fractures. Drawing on the theory of relational coordination, and focusing on relationships and communication, we set out to explore how health professionals experience and describe interprofessional collaboration when mobilizing patients with hip fractures treated according to Enhanced Recovery After Surgery. Two rounds of interviews were conducted with 27 participants from 11 different professional groups, and the data were analyzed thematically. The main findings were that functional goals characterize the collaboration on mobilization due to undefined roles and responsibilities, and that specialized knowledge leads to a need for physical presence and formalization of work procedures in the collaboration. We argue that the hospital as a workplace can be characterized by logics of production and belonging. These logics create care work managed by quality, efficacy and scales of fairness that install power relations that must be recognized when engaging in interprofessional collaboration. We conclude that a primary focus on relationships and communication, as suggested by relational coordination, cannot solve the challenges of interprofessional collaboration, as the context in which health professionals work must also be considered.

Lone Assafi, Dorte Evaristi, Cathrine Selnes Trevino and Trine Schifter Larsen

Background: Worldwide, restrictive measures have been taken to manage the spread of the COVID-19 pandemic. Social distancing and self-isolation have considerably affected the lives of people with dementia and their informal caregivers. The purpose of the study was to explore the consequences of the COVID-19 pandemic as experienced by the spouses of home-dwelling people with dementia in Norway.

Methods: The study had a qualitative descriptive design using individual telephone interviews for data collection. A total sample of 17 spouses of people with dementia were included, 14 women and three men ages 52 to 82 years. A qualitative content analysis following six steps inspired by Graneheim and Lundman was used to identify the categories presented.

Results: The participants emphasized four main perspectives: 1) Radical changes in available services, 2) Restrictions changed everyday life, 3) Impacts on health and well-being, and 4) Actions that made life easier. The participants also described how positive activities and easily accessible services helped them in this situation.

Conclusions: The governmental restrictions of the COVID-19 pandemic resulted in radical changes in available services with severe consequences for the lives and well-being of home-dwelling people with dementia and their spouses. Examples of coping strategies and possible psychosocial interventions compatible with virus precautions were identified. The potential of such interventions should be further explored to meet the needs of vulnerable groups in situations like a pandemic.

Anne Marie Mork Rokstad, Janne Røsvik, Marit Fossberg, Siren Eriksen

To explore markers for synaptic function and Alzheimer disease (AD) pathology in late life depression (LLD), predementia AD and normal controls (NC). A cross-sectional study to compare cerebrospinal fluid (CSF) levels of neurogranin (Ng), Beta-site amyloid-precursor-protein cleaving enzyme1 (BACE1), Ng/BACE1 ratio and Amyloid-β 42/40 ratio, phosphorylated-tau and total-tau in LLD with (LLD AD) or without (LLD NoAD) AD pathology, predementia AD and normal controls (NC). We included 145 participants (NC = 41; predementia AD = 66 and LLD = 38). LLD comprised LLD AD (n = 16), LLD NoAD (n = 19), LLD with non-AD typical changes (n = 3, excluded). LLD AD (pADJ < 0.05) and predementia AD (pADJ < 0.0001) showed significantly higher Ng than NC. BACE1 and Ng/BACE1 ratio were altered similarly. Compared to LLD NoAD, LLD AD showed significantly higher Ng (pADJ < 0.001), BACE1 (pADJ < 0.05) and Ng/BACE1 ratio (pADJ < 0.01). All groups had significantly lower Aβ 42/40 ratio than NC (predementia AD and LLD AD, p < 0.0001; LLD NoAD, p < 0.05). Both LLD groups performed similarly on tests of memory and executive function, but significantly poorer than NC. Synaptic function in LLD depended on AD pathology. LLD showed an association to Amyloid dysmetabolism. The LLD groups performed poorer cognitively than NC. LLD AD may be conceptualized as “predementia AD with depression”.

Nikias Siafarikas, Bjørn-Eivind Kirsebom, Deepak P Srivastava, Cecilia M Eriksson, Eirik Auning, Erik Hessen, Geir Selbæk, Kaj Blennow, Dag Aarsland, Tormod Fladby