Structured physical exercise improves neuropsychiatric symptoms in acute dementia care: a hospital-based RCT

The effectiveness of structured physical activity on agitation in people with dementia: a rapid review

OBJECTIVES

Managing agitation and other behaviours that challenge is a significant dementia care challenge. The priority is to find effective non-pharmacological interventions as drug treatments can have significant side effects. This review evaluates the effectiveness of structured physical activity on agitation in dementia.

METHOD

Our rapid review searched four electronic databases, Cochrane CENTRAL, MEDLINE, CINAHL and Embase, for interventional studies using a structured physical activity programme in people with dementia and studied the effect of this activity on behaviours that challenge. Study quality was assessed using CASP criteria and data was narratively synthesised.

RESULTS

We included 13 studies in this review (four rated as high quality), involving a total of 1546 participants. Results were analysed according to exercise type, frequency and intensity of the intervention. Exercise is effective in reducing agitation and studies with higher adherence to exercise demonstrated more positive effects on agitation and behaviours that challenge.

CONCLUSION

Physical activity can be effective in reducing agitation in older adults with dementia. Further research is needed to clarify the type of intervention that is most beneficial. Strategies to make physical activity more acceptable and available to people with dementia need to be established.

Characteristics, outcomes, facilitators and barriers for psychosocial interventions on inpatient mental health dementia wards: a systematic review

BACKGROUND

The National Institute for Health and Care Excellence guidelines state that psychosocial interventions should be the first line of treatment for people with dementia who are experiencing distress behaviours, such as agitation and depression. However, little is known about the characteristics and outcomes of psychosocial interventions or the facilitators and barriers to implementation on inpatient mental health dementia wards which provide care for people with dementia who are often experiencing high levels of distress.

METHODS

A systematic search was conducted on MEDLINE, CINAHL, PsycINFO, Psychology and Behavioural Sciences Collection, and Scopus in May 2023, following PRISMA guidelines. Reference and citation searches were conducted on included articles. Peer-reviewed literature of any study design, relating to psychosocial interventions in inpatient mental health dementia wards, was included. One author reviewed all articles, with a third of results reviewed independently by a second author. Data were extracted to a bespoke form and synthesised using a narrative review. The quality of included studies was appraised using the Mixed Methods Appraisal Tool.

RESULTS

Sixteen studies were included in the synthesis, which together included a total of 538 people with dementia. Study methods and quality varied. Psychosocial interventions delivered on wards included music therapy (five studies), multisensory interventions (four studies), multicomponent interventions (two studies), technology-based interventions (two studies), massage interventions (two studies) and physical exercise (one study). Reduction in distress and improvement in wellbeing was demonstrated inconsistently across studies. Delivering interventions in a caring and individualised way responding to patient need facilitated implementation. Lack of staff time and understanding of interventions, as well as high levels of staff turnover, were barriers to implementation.

CONCLUSION

This review highlights a striking lack of research and therefore evidence base for the use of psychosocial interventions to reduce distress in this vulnerable population, despite current healthcare guidelines. More research is needed to understand which psychosocial interventions can reduce distress and improve wellbeing on inpatient mental health dementia wards, and how interventions should be delivered, to establish clinical and cost effectiveness and minimise staff burden.

Physical Exercise as a Nonpharmacological Intervention for the Treatment of Neuropsychiatric Symptoms in Persons With Dementia: A Meta-analysis of Randomized Controlled Trials

BACKGROUND

Neuropsychiatric symptoms (NPS) are prevalent in dementia and affect both patients and caregivers in multiple ways. Because of the complications of drug treatments, nonpharmacological interventions, such as exercise, are of particular value. This study aimed to investigate the effect of exercise on the NPS of dementia and draw recommendations for the disease management.

METHODS

Meta-analyses were conducted on the findings of randomized controlled trials identified during an initial systematic review of the literature, according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. The included studies examined the effect of exercise interventions on patients with dementia or mild cognitive impairment using valid assessment tools. The quality of evidence was assessed using Grading of Recommendations, Assessment, Development, and Evaluation analysis.

RESULTS

The meta-analyses revealed that exercise significantly limits NPS [mean difference: -5.28, (95% CI, -9.46, -1.11), P = 0.01] and symptoms of depression [standardized mean difference: -0.16, (95% CI, -0.29, -0.02), P = 0.02], and has a beneficial effect on agitation symptoms. The Grading of Recommendations, Assessment, Development, and Evaluation analysis results showed that exercise has a moderate and high confidence positive effect on NPS and depression, respectively.

CONCLUSIONS

Exercise could be an alternative approach for nonpharmacological treatment of NPS in dementia. Therefore, exercise could be utilized as a treatment of choice or to support existing treatment regimens.

Exercise for acutely hospitalised older medical patients

BACKGROUND

Approximately 30% of hospitalised older adults experience hospital-associated functional decline. Exercise interventions that promote in-hospital activity may prevent deconditioning and thereby maintain physical function during hospitalisation. This is an update of a Cochrane Review first published in 2007.

OBJECTIVES

To evaluate the benefits and harms of exercise interventions for acutely hospitalised older medical inpatients on functional ability, quality of life (QoL), participant global assessment of success and adverse events compared to usual care or a sham-control intervention.

SEARCH METHODS

We used standard, extensive Cochrane search methods. The latest search date was May 2021.

SELECTION CRITERIA

We included randomised or quasi-randomised controlled trials evaluating an in-hospital exercise intervention in people aged 65 years or older admitted to hospital with a general medical condition. We excluded people admitted for elective reasons or surgery.

DATA COLLECTION AND ANALYSIS

We used standard Cochrane methods. Our major outcomes were 1. independence with activities of daily living; 2. functional mobility; 3. new incidence of delirium during hospitalisation; 4. QoL; 5. number of falls during hospitalisation; 6. medical deterioration during hospitalisation and 7. participant global assessment of success. Our minor outcomes were 8. death during hospitalisation; 9. musculoskeletal injuries during hospitalisation; 10. hospital length of stay; 11. new institutionalisation at hospital discharge; 12. hospital readmission and 13. walking performance. We used GRADE to assess certainty of evidence for each major outcome. We categorised exercise interventions as: rehabilitation-related activities (interventions designed to increase physical activity or functional recovery, but did not follow a specified exercise protocol); structured exercise (interventions that included an exercise intervention protocol but did not include progressive resistance training); and progressive resistance exercise (interventions that included an element of progressive resistance training).

MAIN RESULTS

We included 24 studies (nine rehabilitation-related activity interventions, six structured exercise interventions and nine progressive resistance exercise interventions) with 7511 participants. All studies compared exercise interventions to usual care; two studies, in addition to usual care, used sham interventions. Mean ages ranged from 73 to 88 years, and 58% of participants were women. Several studies were at high risk of bias. The most common domain assessed at high risk of bias was measurement of the outcome, and five studies (21%) were at high risk of bias arising from the randomisation process. Exercise may have no clinically important effect on independence in activities of daily living at discharge from hospital compared to controls (16 studies, 5174 participants; low-certainty evidence). Five studies used the Barthel Index (scale: 0 to 100, higher scores representing greater independence). Mean scores at discharge in the control groups ranged from 42 to 96 points, and independence in activities of daily living was 1.8 points better (0.43 worse to 4.12 better) with exercise compared to controls. The minimally clinical important difference (MCID) is estimated to be 11 points. We are uncertain regarding the effect of exercise on functional mobility at discharge from the hospital compared to controls (8 studies, 2369 participants; very low-certainty evidence). Three studies used the Short Physical Performance Battery (SPPB) (scale: 0 to 12, higher scores representing better function) to measure functional mobility. Mean scores at discharge in the control groups ranged from 3.7 to 4.9 points on the SPPB, and the estimated effect of the exercise interventions was 0.78 points better (0.02 worse to 1.57 better). A change of 1 point on the SPPB represents an MCID. We are uncertain regarding the effect of exercise on the incidence of delirium during hospitalisation compared to controls (7 trials, 2088 participants; very low-certainty evidence). The incidence of delirium during hospitalisation was 88/1091 (81 per 1000) in the control group compared with 70/997 (73 per 1000; range 47 to 114) in the exercise group (RR 0.90, 95% CI 0.58 to 1.41). Exercise interventions may result in a small clinically unimportant improvement in QoL at discharge from the hospital compared to controls (4 studies, 875 participants; low-certainty evidence). Mean QoL on the EuroQol 5 Dimensions (EQ-5D) visual analogue scale (VAS) (scale: 0 to 100, higher scores representing better QoL) ranged between 48.9 and 64.7 in the control group at discharge from the hospital, and QoL was 6.04 points better (0.9 better to 11.18 better) with exercise. A change of 10 points on the EQ-5D VAS represents an MCID. No studies measured participant global assessment of success. Exercise interventions did not affect the risk of falls during hospitalisation (moderate-certainty evidence). The incidence of falls was 31/899 (34 per 1000) in the control group compared with 31/888 (34 per 1000; range 20 to 57) in the exercise group (RR 0.99, 95% CI 0.59 to 1.65). We are uncertain regarding the effect of exercise on the incidence of medical deterioration during hospitalisation (very low-certainty evidence). The incidence of medical deterioration in the control group was 101/1417 (71 per 1000) compared with 96/1313 (73 per 1000; range 44 to 120) in the exercise group (RR 1.02, 95% CI 0.62 to 1.68). Subgroup analyses by different intervention categories and by the use of a sham intervention were not meaningfully different from the main analyses.

AUTHORS' CONCLUSIONS

Exercise may make little difference to independence in activities of daily living or QoL, but probably does not result in more falls in older medical inpatients. We are uncertain about the effect of exercise on functional mobility, incidence of delirium and medical deterioration. Certainty of evidence was limited by risk of bias and inconsistency. Future primary research on the effect of exercise on acute hospitalisation could focus on more consistent and uniform reporting of participant's characteristics including their baseline level of functional ability, as well as exercise dose, intensity and adherence that may provide an insight into the reasons for the observed inconsistencies in findings.

The Rationale and Design of Behavioral Interventions for Management of Agitation in Dementia in a Multi-Site Clinical Trial

BACKGROUND

Agitation and aggression are common in patients with Alzheimer's disease and related dementias and pose a significant burden on patients, caregivers, and the healthcare systems. Guidelines recommend personalized behavioral interventions as the first-line treatment; however, these interventions are often underutilized. The Standardizing Care for Neuropsychiatric Symptoms and Quality of Life in Dementia (StaN) study (ClinicalTrials.gov Identifier # NCT0367220) is a multisite randomized controlled trial comparing an Integrated Care Pathway, that includes a sequential pharmacological algorithm and structured behavioral interventions, with treatment-as-usual to treat agitation in dementia in long-term care and inpatient settings.

OBJECTIVE

To describe the rationale and design of structured behavioral interventions in the StaN study.

METHODS

Structured behavioral interventions are designed and implemented based on the following considerations: 1) personalization, 2) evidence base, 3) dose and duration, 4) measurement-based care, and 5) environmental factors and feasibility.

RESULTS

The process to design behavioral interventions for each individual starts with a comprehensive assessment, followed by personalized, evidence-based interventions delivered in a standardized manner with ongoing monitoring of global clinical status. Measurement-based care is used to tailor the interventions and to integrate them with pharmacotherapy.

CONCLUSION

Individualized behavioral interventions in patients with dementia may be challenging to design and implement. Here we describe a process to design and implement individualized and structured behavioral interventions in the context of a multisite trial in long-term care and inpatient settings. This process can inform the design of behavioral interventions in future trials and in clinical settings for the treatment of agitation in dementia.

Care for dementia patients and caregivers amid COVID-19 pandemic

BACKGROUND

Multiple efforts have been taken across the world to bridge gaps in evidence and provide recommendations for dementia care and caregiver support during the COVID-19 pandemic. We aimed to review the available literature on measures used to alleviate the negative impacts of the pandemic on dementia care.

METHODS

We searched three databases: PubMed, CINAHL and PsycINFO to identify studies that described strategies that were recommended or taken to provide care and support to persons with dementia and their caregivers during the COVID-19 pandemic.

RESULTS

We included a total of 37 papers, originating from high, middle and low-income countries. We also included 6 papers exploring safety of COVID-19 vaccinations. Infection prevention recommendations predominantly involved providing consistent reminders to persons with dementia to engage in infection prevention measures and included measures to restrict wandering in long-term care settings to reduce spread of infection. Medical care included tele and video consultations to maintain and monitor clinical stability. Guidance for continuing rehabilitation activities for persons with dementia through remotely conducted cognitive stimulating activities, physical exercises and environmental modifications were further highlighted by multiple studies/articles. In addition, strategies to support caregivers were also advised and included teleconsultations and psycho-educational programs.

CONCLUSION

The COVID-19 pandemic has exposed gaps in health and social care systems across the world, but has also revealed the enduring dedication of clinicians, expert groups and dementia support organizations to modify and adapt existing dementia care services to meet the needs of persons with dementia and their caregivers during periods of emergency.

The Impact of Exercising in the Quality of Life of People with Dementia-Alzheimer's Disease

INTRODUCTION

In the recent years, the percentage of people with mild mental deterioration or some form of dementia is extremely increasing. Given that until today there has not been found an effective cure for dementia and the side effects of any kind of medicine are immense, the need for alternative non-medicine intervention seems to be obligatory. The target of this research was the activity concerning the mental deterioration of old people and its use with no medicine at all to deal with dementia through a good quality life.Method - Material: Throughout the literature review on which the method of collecting the proper data for the research, numerous published researches were studied from 2010 until 2018 which fulfilled the criteria of accession. The researches were identified in three electronic databases (PubMed, ScienceDirect, Web of Science) and were examined in accordance with the examined population, the draft of the research, the kinds of intervention, and the assessment tools which were used.Results - Conclusions: The majority of researches seem to converge to the aspect that the physical activity offers considerable benefits to the people suffering from the Alzheimer's disease or any other kind of dementia. More specifically, it contributes to the stability and the improvement of mental function as well as to the delay of the appearance of serious neuropsychiatric symptoms such as depression, confusion, and apathy. Moreover, the role of physical activity is significant in the improvement of functional ability of patients suffering from dementia resulting in the enforcement of autonomy in everyday activities and the confinement of the danger of dropping down. Consequently, the researches indicate that physical activity constitutes a well-promising intervention in the prevention and non-medicine treatment as it contributes to the upgrading of good quality life of the patients. However, the results vary depending on the particular characteristics of the body practicing, such as the kind of exercise, the intensity, the frequency, and the duration. Thus, it is extremely important the comprehension and knowledge of specific factors which are responsible for the acquirement of characteristics of therapeutic intervention which will lead to the development of exclusively designed exercise patterns and programs for dementia.

Emerging Perspectives in the Management of Agitation in Alzheimer's Disease and Patients with Dementia

While Alzheimer's disease, the most common cause of dementia, is perhaps best characterized by cognitive decline, more than 90% of patients exhibit behavioural and psychological symptoms of dementia. Agitation in patients with dementia is often difficult to manage, and is associated with increased morbidity and mortality in patients and a heightened caregiver burden. Thus, effective management of dementia-related agitation (DRA) is vital. Care should first be taken to consider and address causes of agitation and aggression, after which non-pharmacological interventions should be employed. If non-pharmacological measures are unsuccessful in reducing DRA then medications should be considered, although none are approved by the Food and Drug Administration for this indication. Electroconvulsive therapy may be a promising option for patients with treatment-refractory DRA, although more studies are needed. While there are several drugs in the pipeline for DRA treatment, results from robust randomized clinical trials are necessary before they can be administered to patients. Thus, clinicians should employ current strategies to manage DRA to ensure holistic care for patients with Alzheimer's disease.

[Physical Activity and Mental Health in the Elderly]

Physical Activity and Mental Health in the Elderly Abstract. The aging process is closely linked to physiological changes. These physiological changes may lead to an increased vulnerability for developing somatic and mental disorders. Reduced physical activity/sedentary behaviour can enhance this process. In contrast, physical training and sports counteract this process, in particular in the elderly, who may thus gain or maintain a younger biological age. Physical fitness is associated with better mental health in the elderly. Sports and physical activity over the course of life have shown to be of preventive value concerning the development of depression and dementia in old age. Also late-life depression and cognitive impairment (MCI, mild cognitive impairment) can be improved by regular, continuous physical exercise. Some data furthermore suggest that even patients with dementia benefit from physical exercise, especially on behalf of the behavioural and psychic symptoms of dementia (BPSD).

The impact of physical exercise on hippocampus, in physiological condition and ageing-related decline: current evidence from animal and human studies

Physical exercise (PE), notoriously, promotes a state of general well-being, throughout the entire human lifespan. Moreover, maintaining an adequate and regular PE habit results to be a powerful preventive factor towards many diseases and may also help in managing existing pathological conditions. PE induces structural and functional changes in various districts of the body, determining biological and psychological benefits. Additionally, in elderly, PE might represent a remarkable tool reducing cognitive impairments related to the normal aging processes and it has also been found to have an impact in neurodegenerative diseases such as Alzheimer's disease. The present review aims to provide an overview about PE effects on hippocampus, since it is one of the brain regions most susceptible to aging and, therefore, involved in diseases characterized by cognitive impairment.

[Exercise and physical training as interventions in gerontopsychiatry]

The treatment of mental disorders in older adults is often restricted by limitations in efficacy and tolerability of pharmacologically dominated standard therapeutic strategies. Therefore, nonpharmacological therapeutic alternatives and supplements play a crucial role in these patients. Structured exercise and training are interventions that are associated with a high level of evidence in prevention and treatment of mental and cognitive disorders. This article is based on a selective search of the literature and provides an overview of the current scientific evidence with respect to the mechanisms of action, the effects on frequently occurring clinical disorders and modalities of the exercise interventions.

Impacts of dance on agitation and anxiety among persons living with dementia: An integrative review

INTRODUCTION

Individuals living with dementia are likely to experience one or more neuropsychiatric symptoms on a daily basis. Dance has the potential to positively impact and reduce these symptoms. This integrative review was conducted to identify the impacts of dance on agitation and anxiety among those living with dementia.

METHODS

An integrative review methodology guided the literature search and evaluation. Thirty-Nine papers were retrieved from the initial search. Five studies were included in the review. The Mixed Methods Appraisal Tool was used to assess the quality of relevant articles.

RESULTS

Three quantitative and 2 qualitative studies were reviewed. Three out of 4 studies found dance positively impacted agitation. While 1 out of 2 studies reported improvements in anxiety.

DISCUSSION

This review suggests that dance has the potential to impact anxiety and agitation symptoms of persons living with dementia. However, the evidence is weak and further research is warranted.

Association between sedentary behavior and the risk of dementia: a systematic review and meta-analysis

An increasing number of original studies suggest that sedentary behavior is associated with the risk of dementia, but the results remain inconsistent and inconclusive. In this meta-analysis, we analyzed available observational epidemiological evidence to identify the association between sedentary behavior and the risk of dementia. We searched PubMed and Embase from their inception to March 2019 to identify observational studies examining the association between sedentary behavior and risk of dementia. Two authors independently extracted data and assessed study quality using predefined criteria. The Q statistics and I² methods were used to test for heterogeneity. The publication bias of the included studies was also estimated using Begg's and Egger's tests. We identified 18 relevant cohort studies involving 250,063 participants and 2269 patients with dementia. Pooled result showed that sedentary behavior was significantly associated with increased risk of dementia (RR = 1.30; 95% CI: 1.12-1.51). In addition, subgroup analyses by state, and controlling for the concomitant effects of age, sex, education were conducted for the increase of dementia risk, relating to sedentary, respectively. In general, these subgroup analyses showed no statistically significant differences. The results of our meta-analysis suggested that sedentary behavior was independently associated with a significantly increased risk of dementia, which might have important implications in conducting etiological studies for dementia and developing strategies for dementia prevention.

A Structured Physical Exercise Program Reduces Professional Caregiver's Burden Caused by Neuropsychiatric Symptoms in Acute Dementia Care: Randomized Controlled Trial Results

Physical exercise is an effective treatment approach for neuropsychiatric symptoms (NPS), but it is unknown whether the reduction of NPS has an impact on professional caregiver's burden. A randomized controlled trial in acute dementia care with N = 70 patients, n = 35 per group, was conducted. The intervention group (IG) received an exercise program, the control group a social stimulation program. The RM-ANOVA showed a significant group x time interaction with time effects for the IG and decreased caregiver burden due to the exercise program at follow-up. Physical exercise programs may not only be beneficial for the patients but also for their professional caregivers.

Physical exercise attenuates cognitive decline and reduces behavioural problems in people with mild cognitive impairment and dementia: a systematic review

QUESTIONS

What is the effect of physical exercise on cognitive decline and behavioural problems in people with mild cognitive impairment (MCI) or dementia? What is the effect of physical exercise on particular domains of cognitive function? How do training protocols and patients' characteristics influence the outcomes?

DESIGN

Systematic review and meta-analysis of randomised trials.

PARTICIPANTS

People with MCI or dementia as their primary diagnosis.

INTERVENTION

Physical exercise.

OUTCOME MEASURES

Cognitive function including global cognition, memory, executive function, reasoning, attention, language, and behavioural problems.

RESULTS

Forty-six trials involving 5099 participants were included in this review. Meta-analysis of the data estimated that aerobic exercise reduced the decline in global cognition, with a standardised mean difference (SMD) of 0.44, 95% CI 0.27 to 0.61, I² = 69%. For individual cognitive functions, meta-analysis estimated that exercise lessened working memory decline (SMD 0.28, 95% CI 0.04 to 0.52, I² = 40%). The estimated mean effect on reducing the decline in language function was favourable (SMD 0.17), but this estimate had substantial uncertainty (95% CI -0.03 to 0.36, I² = 67%). The effects of exercise on other cognitive functions were unclear. Exercise also reduced behavioural problems (SMD 0.36, 95% CI 0.07 to 0.64, I² = 81%).

CONCLUSION

Physical exercise can reduce global cognitive decline and lessen behavioural problems in people with MCI or dementia. Its benefits on cognitive function can be primarily attributed to its effects on working memory. Aerobic exercise at moderate intensity or above and a total training duration of > 24 hours can lead to a more pronounced effect on global cognition.

Implementing physical exercise and music interventions for patients suffering from dementia on an acute psychogeriatric inpatient ward

Background: Increasing attention is focusing on psychosocial interventions for treating patients with dementia. Aims: This observational intervention study investigated the impact of physical exercise and music interventions among patients with dementia on an acute psychogeriatric ward. Materials and methods: The data were collected during February 2009-December 2010 (n = 89; treatment as usual) and during April 2011-March 2013 (n = 86; treatment as usual with physical exercise, e.g. balance, flexibility, strength training, and music interventions, e.g. singing, listening to music and playing instruments). The primary outcome measure was the Neuropsychiatric Inventory and the secondary outcome measures were the Alzheimer's Disease Cooperative Study-Activities of Daily Living, the Barthel Index, and the Mini-Mental State Examination. Results: In both groups, neuropsychiatric symptoms (NPS) decreased (p < .001) but daily functioning deteriorated (p < .001). No significant between-group differences for either outcome variable were found. Based on linear mixed models, fewer exercise sessions associated with more severe symptoms (p = .030), and the time variable (admission/discharge) with a decline in the level of NPS (p < .001). Moreover, female gender (p = .026) and more exercise sessions (p = .039) associated with an increased level of functioning (p = .031) and the time variable (admission/discharge) with a drop in the level of functioning during hospitalization (p < .001). Conclusion: Although no differences were found between the study groups, analysis within the intervention group suggest that physical exercise may have some positive effects for both NPS and the level of functioning in some patients with dementia while no positive effects regarding music interventions were found.

Role of physical activity in ameliorating neuropsychiatric symptoms in Alzheimer disease: A narrative review

OBJECTIVE

Neuropsychiatric symptoms (NPs) affect almost all patients with Alzheimer disease (AD). Because of the complications associated with the pharmacological treatment, nonpharmacological treatment (such as physical activity) can be considered as an additional complementary treatment option for NPs. The aim of this review is to evaluate the impact of physical activity on NPs in patients with AD.

METHODS

We searched Pubmed and Google Scholar for potential eligible articles until March 1, 2018.

RESULTS

Although there are contradictory results showing the impact of physical exercise on NPs, most of them reported that it had a significant effect on depression and sleep disturbances in patients with AD. The beneficial effects could be explained through several mechanisms, including modulated production of neurotransmitters; increasing neurotrophins, such as brain-derived neurotrophic factor; reduction of oxidative stress and inflammation; elevation of cerebral blood flow; hypothalamic pituitary adrenal axis regulation; and support of neurogenesis and synaptogenesis. Physical activity can also improve cardiovascular risk factors, which may exaggerate NPs. There is limited evidence for other NPs such as agitation, disinhibition, apathy, hallucinations, and anxiety.

CONCLUSION

Physical activity may ameliorate depression and sleep disturbances in patients with AD. Therefore, physical activity can be a "potential" add-on treatment to drugs to reduce or prevent these symptoms onset and recurrence in patients with AD. However, further studies are needed to focus on relationship between physical activity and other NPs.

Acceptability of a Dyadic Tai Chi Intervention for Older People Living With Dementia and Their Informal Carers

Exercise is effective in preventing falls among older adults. However, few studies have included people living with dementia and their carers and explored their experiences. The aim of this study is to explore what affects the acceptability of exercise interventions to better meet the needs of people with dementia and their carers as a dyad. Observations, field notes containing participant's and instructor's feedback, and focus groups with 10 dyads involved in Tai Chi classes for 3 or 4 weeks in two sites in the South of England were thematically analyzed to understand their experiences. Findings suggest that dyads' determination to achieve the benefits of Tai Chi facilitated their adherence, whereas a member of the dyad's low sense of efficacy performing the movements during classes was a barrier. Simplifying class content and enhancing the clarity of instructions for home-based practice will be key to support the design of future exercise interventions.

The Multidisciplinary Approach to Alzheimer's Disease and Dementia. A Narrative Review of Non-Pharmacological Treatment

Background: Alzheimer's disease (AD) and dementia are chronic diseases with progressive deterioration of cognition, function, and behavior leading to severe disability and death. The prevalence of AD and dementia is constantly increasing because of the progressive aging of the population. These conditions represent a considerable challenge to patients, their family and caregivers, and the health system, because of the considerable need for resources allocation. There is no disease modifying intervention for AD and dementia, and the symptomatic pharmacological treatments has limited efficacy and considerable side effects. Non-pharmacological treatment (NPT), which includes a wide range of approaches and techniques, may play a role in the treatment of AD and dementia. Aim: To review, with a narrative approach, current evidence on main NPTs for AD and dementia. Methods: PubMed and the Cochrane database of systematic reviews were searched for studies written in English and published from 2000 to 2018. The bibliography of the main articles was checked to detect other relevant papers. Results: The role of NPT has been largely explored in AD and dementia. The main NPT types, which were reviewed here, include exercise and motor rehabilitation, cognitive rehabilitation, NPT for behavioral and psychological symptoms of dementia, occupational therapy, psychological therapy, complementary and alternative medicine, and new technologies, including information and communication technologies, assistive technology and domotics, virtual reality, gaming, and telemedicine. We also summarized the role of NPT to address caregivers' burden. Conclusions: Although NPT is often applied in the multidisciplinary approach to AD and dementia, supporting evidence for their use is still preliminary. Some studies showed statistically significant effect of NPT on some outcomes, but their clinical significance is uncertain. Well-designed randomized controlled trials with innovative designs are needed to explore the efficacy of NPT in AD and dementia. Further studies are required to offer robust neurobiological grounds for the effect of NPT, and to examine its cost-efficacy profile in patients with dementia.

Statistical learning of mobility patterns from long-term monitoring of locomotor behaviour with body-worn sensors

Long term monitoring of locomotor behaviour in humans using body-worn sensors can provide insight into the dynamical structure of locomotion, which can be used for quantitative, predictive and classification analyses in a biomedical context. A frequently used approach to study daily life locomotor behaviour in different population groups involves categorisation of locomotion into various states as a basis for subsequent analyses of differences in locomotor behaviour. In this work, we use such a categorisation to develop two feature sets, namely state probability and transition rates between states, and use supervised classification techniques to demonstrate differences in locomotor behaviour. We use this to study the influence of various states in differentiating between older adults with and without dementia. We further assess the contribution of each state and transition and identify the states most influential in maximising the classification accuracy between the two groups. The methods developed here are general and can be applied to areas dealing with categorical time series.