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BACKGROUND AND PURPOSE: The literature has associated bone mineral density (BMD) and Alzheimer's disease (AD). The aim of the present systematic review was to investigate BMD in older adults with AD compared with older adults with no dementia. METHODS: Searches were performed in the MEDLINE, EMBASE, CINAHL, and Web of Science databases from inception to May 2022. Observational studies that compared BMD in the populations of interest were included. Methodical quality (risk of bias) was appraised using the Newcastle-Ottawa Scale. Quality of evidence was assessed using the Grading of Recommendations, Assessment, Development, and Evaluation approach. Standardized mean differences (SMD) were calculated for meta-analyses. RESULTS AND DISCUSSION: Five studies were included, involving a total of 1772 older adults (373 with AD and 1399 with no dementia). A first meta-analysis compared 207 older adults with AD and 1243 with no dementia for BMD in the femoral neck. The results showed lower BMD in the AD groups (SMD =-1.52; 95% CI, -2.61 to -0.42; P = .007, low quality of evidence). A second meta-analysis considering different sites of the body (whole body, trunk, femur, and lumbar spine) also showed lower BMD in older adults with AD compared with the group with no dementia (SMD =-0.98; 95% CI, -1.91 to -0.05; P = .04, low quality of evidence). Newcastle-Ottawa Scale scores ranged from 7 to 9, indicating low risk of bias. CONCLUSIONS: Bone mineral density is lower in older adults with AD than in older adults with no dementia, especially in the femoral neck. These results suggest that older adults with AD may be at greater risk of developing osteopenia and osteoporosis. Current clinical practice guidelines should be amended for screening frequency and methodology for this particular cohort. Further studies are needed to confirm whether older people with AD have lower BMD in other sites of the body.

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BACKGROUND: Mobility is an important component of functioning. Motor and cognitive impairment in older people with Alzheimer's disease can exert a negative impact on life-space mobility. OBJECTIVE: To compare life-space mobility in older adults with mild and moderate Alzheimer-type dementia and those without dementia and determine associations with health factors. METHODS: Life-space mobility was assessed using the Life Space Assessment (LSA) in 33 older adults with Alzheimer-type dementia (AD group) and 24 older adults without dementia (WD group). The World Health Organization Disability Assessment Schedule (WHODAS 2.0), Addenbrooke's Cognitive Examination (ACE-R), Geriatric Depression Scale (GDS), Modified Baecke Questionnaire for Older Adults (MBQOA), and Short Physical Performance Battery (SPPB) were completed. Statistical analysis was performed with unpaired t-test or Mann-Whitney tests for comparisons between groups and Spearman's correlation test. RESULTS: The AD group had a lower total LSA score compared to the WD group (44 vs 65, mean difference = -20.7 [95% CI: -28.6, -12.9]), 21% of the AD group were restricted to their homes when no assistance was available. In both groups, moderate correlations were found between LSA and both functioning and physical activity level. Symptoms of depression presented moderate correlation only in the WD group. CONCLUSIONS: Older adults with AD have lower life-space mobility and require assistance to achieve higher levels of mobility. CLINICAL IMPLICATIONS: LSA can help assess life-space mobility. Encouraging and enabling assistance is fundamental to a greater life-space for older adults with dementia.

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PURPOSE: To investigate the effects of physical exercise at improving functional capacity in older adults living with Alzheimer's disease (AD). METHODS: Medline, Embase, Web of Science, The Cochrane Library, Lilacs, and PEDro were searched from inception until January 2021. Randomized controlled trials (RCTs) that reported functional capacity outcomes were included. The evidence was assessed using the GRADE approach. RESULTS: Thirteen RCTs were included, involving 811 older adults living with AD. Multimodal exercise (ME), aerobic exercise (AE), and resistance exercise (RE) were used. The interventions were mainly supervised by caregivers. The evidence was low and with effect for activities of daily living (ADLs), moderate and with no effect for mobility and very low and with no effect for muscle strength, postural balance and flexibility after treatment with ME, moderate and with no effect for cardiorespiratory function and ADLs after treatment with AE. It was not possible to synthesize any type of evidence for RE. CONCLUSIONS: Multimodal exercise promotes improvements in functional capacity (ADLs). Therefore, the practice of physical exercise can be recommended for older adults living with AD. The involvement of the caregiver in the physical exercises should also be considered, as it could enhance the benefits of exercise for these older adults.Implications for rehabilitationHealthcare providers with clinical knowledge regarding physical exercise should promote, prescribe and support the daily practice of physical exercises for older adults living with Alzheimer's disease (AD).The involvement of caregivers in home-based physical exercise programs should be considered, as it could enhance the benefits of such programs for these older adults.It is important to consider the degree of cognitive impairment in older adults living with AD when outlining goals for the improvement in functional capacity through physical exercise.Multimodal exercise involving aerobic training, postural balance, muscle strengthening, and flexibility is capable of promoting an improvement in functional capacity (activities of daily living) for these older adults.

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BACKGROUND AND PURPOSE: The purposes of this study were to identify differences in gait speed performance over 6 months between older people with Preserved Cognition (PrC), with Mild Cognitive Impairment (MCI) and with Alzheimer disease (AD) in mild stage; and to verify if the change in gait speed could discriminate fallers in older people with MCI and AD in a mild stage METHODS: A longitudinal study was conducted with community-dwelling older adults, including 40 with PrC, 36 with MCI and 34 with AD in the mild stage. Gait speed (in m/s) changes were captured through a 10-meter walk test. We documented the number of self-reported falls by monthly calendars that were returned after a 6-month follow-up. During this period, the participants received monthly telephone calls to remind them to fill in the calendar RESULTS: There was a significant difference in terms of sex and age between the groups: 23%, 31% and 19% were female and had a mean age of 72.8, 75.9 and 76.9 years in the PrC, MCI and AD groups respectively. During the follow-up, 45%, 52.7% and 52.9% of the PrC, MCI and AD groups fell. The MCI and AD groups presented lower gait speed compared to the PrC Group at both moments. There was no significant difference in the change of gait speed between groups. In the model adjusted by age, the change in gait speed failed to discriminate fallers in older people with MCI and with AD CONCLUSION: Older people with MCI and AD in the mild stage present lower gait speed compared to older people with PrC. Changes in gait speed over a short period of time do not discriminate fallers in older people with MCI or AD in a mild stage.

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OBJECTIVES: There is a need for interventions to reduce frailty in older people with Alzheimer's dementia (AD). The purpose of this study was to investigate the effect of a home-based multimodal exercise program for older adults with AD (AD-HOMEX) on frailty. DESIGN: A parallel single-blind randomized controlled trial comparing a home-based exercise program and usual care. SETTING AND PARTICIPANTS: A home-based program in Brazil. Forty individuals aged 65years or older with mild to moderate AD. METHODS: The intervention group (IG) participated in a 16-week protocol involving three 60-minute sessions per week of progressive individualized physical exercises supervised by a physical therapist. The participants in the control group (CG) maintained their usual care. Frailty was assessed using the FRAIL questionnaire, the Edmonton Frail Scale (EFS) and a subjective assessment by the evaluator (SAE) at baseline and follow-up. Per-protocol analysis was performed. RESULTS: Thirty-five participants completed the program (IG = 16; CG = 19). Frailty improved in the IG based on the EFS (P = .004) and FRAIL (P ≤ .001). An interaction between group and time (P = .008) and a significant difference between times (P = .047) were found for the SAE responsiveness domain. An improvement in the classification of frailty (EFS and FRAIL) was found between times in the IG (P = .003) and between groups at follow-up (P = .027). A significant difference in the SAE classification was found between groups at follow-up (P = .034), with a worsening between times in the CG (P = .032). Interestingly, a more favorable frailty transition pattern was found in the IG based on both the EFS and FRAIL. CONCLUSIONS AND IMPLICATIONS: AD-HOMEX seems to reduce frailty and improve frailty transition patterns. Our findings provide a further theoretical basis for designing home-based physical interventions as routine practice for older frail adults with AD.

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Changes in executive function and motor aspects can compromise the prognosis of older adults with mild cognitive impairment (MCI) and favor the evolution to dementia. OBJECTIVES: The aim of this study was to investigate the changes in executive function and gait and to determine the association between changes in these variables. METHODS: A 32-month longitudinal study was conducted with 40 volunteers: 19 with preserved cognition (PrC), 15 with MCI and 6 with Alzheimer disease (AD). Executive function and gait speed were assessed using the Frontal Assessment Battery, the Clock-Drawing test and the 10-meter walk test. For data analysis, the Pearson product-moment correlation, two-way repeated-measures ANOVA, and chi-square were conducted. RESULTS: After 32 months, an improvement in the executive function was found in all groups (p=0.003). At baseline, gait speed was slower in individuals with MCI and AD compared to those with PrC (p=0.044), that was maintained after the follow-up (p=0.001). There was significant increase in number of steps in all groups (p=0.001). No significant association was found between changes in gait speed and executive function. CONCLUSIONS: It should be taken into account that gait deteriorates prior to executive function to plan interventions and health strategies for this population.

Alterações na função executiva e nos aspectos motores podem comprometer o prognóstico de idosos com comprometimento cognitivo leve (CCL) e favorecer a evolução para demência. OBJETIVOS: O objetivo deste estudo foi investigar alterações na função executiva e na marcha e determinar a associação entre alterações nessas variáveis. MÉTODO: Foi realizado um estudo longitudinal de 32 meses com 40 voluntários: 19 com cognição preservada (PrC), 15 com CCL e 6 com doença de Alzheimer (DA). A função executiva e a velocidade da marcha foram avaliadas por meio de bateria de avaliação frontal, do teste de desenho do relógio e do teste de caminhada de 10 metros. Para a análise de dados, o coeficiente de correlação produto-momento de Pearson, ANOVA de medidas repetidas bidirecional e o qui-quadrado foram realizados. RESULTADOS: Após 32 meses, houve melhora na função executiva em todos os grupos (p=0,003). No início do estudo, a velocidade da marcha foi mais lenta nos indivíduos com CCL e DA em comparação com os PrC (p=0,044), que foi mantida após o acompanhamento (p=0,001). Houve aumento significativo no número de etapas em todos os grupos (p=0,001). Não foi encontrada associação significativa entre alterações na velocidade da marcha e função executiva. CONCLUSÕES: Deve-se levar em consideração que a marcha se deteriora antes da função executiva para planejar intervenções e estratégias de saúde para essa população.

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ABSTRACT. Changes in executive function and motor aspects can compromise the prognosis of older adults with mild cognitive impairment (MCI) and favor the evolution to dementia. Objectives: The aim of this study was to investigate the changes in executive function and gait and to determine the association between changes in these variables. Methods: A 32-month longitudinal study was conducted with 40 volunteers: 19 with preserved cognition (PrC), 15 with MCI and 6 with Alzheimer disease (AD). Executive function and gait speed were assessed using the Frontal Assessment Battery, the Clock-Drawing test and the 10-meter walk test. For data analysis, the Pearson product-moment correlation, two-way repeated-measures ANOVA, and chi-square were conducted. Results: After 32 months, an improvement in the executive function was found in all groups (p=0.003). At baseline, gait speed was slower in individuals with MCI and AD compared to those with PrC (p=0.044), that was maintained after the follow-up (p=0.001). There was significant increase in number of steps in all groups (p=0.001). No significant association was found between changes in gait speed and executive function. Conclusions: It should be taken into account that gait deteriorates prior to executive function to plan interventions and health strategies for this population.

RESUMO. Alterações na função executiva e nos aspectos motores podem comprometer o prognóstico de idosos com comprometimento cognitivo leve (CCL) e favorecer a evolução para demência. Objetivos: O objetivo deste estudo foi investigar alterações na função executiva e na marcha e determinar a associação entre alterações nessas variáveis. Método: Foi realizado um estudo longitudinal de 32 meses com 40 voluntários: 19 com cognição preservada (PrC), 15 com CCL e 6 com doença de Alzheimer (DA). A função executiva e a velocidade da marcha foram avaliadas por meio de bateria de avaliação frontal, do teste de desenho do relógio e do teste de caminhada de 10 metros. Para a análise de dados, o coeficiente de correlação produto-momento de Pearson, ANOVA de medidas repetidas bidirecional e o qui-quadrado foram realizados. Resultados: Após 32 meses, houve melhora na função executiva em todos os grupos (p=0,003). No início do estudo, a velocidade da marcha foi mais lenta nos indivíduos com CCL e DA em comparação com os PrC (p=0,044), que foi mantida após o acompanhamento (p=0,001). Houve aumento significativo no número de etapas em todos os grupos (p=0,001). Não foi encontrada associação significativa entre alterações na velocidade da marcha e função executiva. Conclusões: Deve-se levar em consideração que a marcha se deteriora antes da função executiva para planejar intervenções e estratégias de saúde para essa população.

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BACKGROUND: At-home physical exercise may be an important intervention strategy for older people with Alzheimer disease (AD) due to the greater adherence and ease for the caregivers. PURPOSE: Determine the effects home-based multimodal exercise program in older people with AD on muscle strength, balance, functioning, cognition, dual task performance, frailty, and physical activity level. METHODS: This is a trial with 40 older people with mild and moderate AD, randomized into intervention group (IG) and control group (CG). The participants will be evaluated by blinded examiners at baseline and after 16 weeks of training. The evaluations will investigate functioning (Timed Up and Go test, Direct Assessment of Functional Status, WHO Disability Assessment Schedule, Short Physical Performance Battery, and Activities of Daily Living Questionnaire), muscle strength (manual dynamometer and Sit-to-Stand test), frailty (FRAIL Scale and Edmonton Frail Scale), cognition (Addenbrooke's Cognitive Examination, Trail Making Test, Walking Trail-Making Test, and Frontal Assessment Battery), balance (force platform, Figure-of-Eight Walking Test, Functional Reach Test, Alternate Step Test, and Calf-Raise Senior), dual task (force platform), and physical activity level (Modified Baecke Questionnaire and Life-Space Assessment). The IG will perform 16 weeks of exercise at home that involve functioning, strength, balance, and aerobic endurance in 60-min sessions three times a week. The CG will not undergo any intervention. CONCLUSION: Improvements in the aspects evaluated are expected in the IG compared to CG. The protocol will provide a theoretical basis for the creation of clinical interventions and health promotion measures for older people with AD.

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BACKGROUND: Clinical follow-up studies are necessary for a better understanding of the evolution of cognitive impairment as well as the development of better assessment and intervention tools. OBJECTIVE: To investigate whether older people with preserved cognition (PC), mild cognitive impairment (MCI) and mild Alzheimer's disease (AD) show differences in clinical outcomes and interventions after a 32-month period. METHODS: One hundred twenty-four community-dwelling older people were included and classified in one of three groups (PC, MCI and mild AD). Information on clinical outcomes (deaths, new diagnoses, falls, need for assistance or changes in routine and hospitalizations) and interventions (increased use of medication, physiotherapeutic intervention, practice of physical exercise, etc.) in the 32-month period were collected by telephone or during a home visit on a single day. RESULTS: Ninety-five participants (35 with PC, 33 with MCI and 27 with AD) were reevaluated after 32 months. The need for assistance/changes in routine was significantly higher in the AD group, especially with regard to basic activities of daily living. Unlike the other groups, the PC group did not show "other diagnoses" (urinary incontinence, prolapse, change in vision or autoimmune disease). No significant differences were found regarding other variables. CONCLUSIONS: Older people with and without cognitive impairment exhibited differences in some clinical outcomes after 32 months, such as need for assistance or changes in their routine and new diagnoses of specific diseases. Therefore, the multidimensionality of geriatric patients should be considered when planning assessments and interventions.

INTRODUÇÃO: Estudos com acompanhamento clínico são necessários para um melhor entendimento da evolução do quadro cognitivo e desenvolvimento de melhores estratégias de avaliação e intervenção. OBJETIVO: Investigar se idosos com cognição preservada (CP), comprometimento cognitivo leve (CCL) e doença de Alzheimer (DA) leve apresentam diferenças nos desfechos clínicos e intervenções realizadas ao longo de 32 meses. MÉTODOS: A amostra foi constituída de 124 idosos residentes na comunidade foram incluídos e classificados em um dos três grupos (CP, CCL, DA leve). Informações sobre desfechos clínicos (óbitos, novos diagnósticos, quedas, necessidade de assistência ou mudanças de rotina e hospitalizações) e intervenções realizadas (aumento do uso de medicamentos, intervenção fisioterapêutica, prática de exercícios físicos e outras) foram coletadas, no período de 32 meses, por telefone ou durante visita domiciliar em um único dia. RESULTADOS: Após 32 meses, 95 idosos (35 CP, 33 CCL e 27 DA) foram reavaliados. A necessidade de assistência/mudanças de rotina foi significativamente maior no Grupo DA, principalmente para as atividades básicas de vida diária. Diferentemente dos outros grupos, o Grupo CP não apresentou "outros diagnósticos" (incontinência urinária, prolapso, alterações visuais e doença autoimune). Nenhuma outra diferença significativa foi encontrada quanto às outras variáveis. CONCLUSÃO: Os idosos com e sem comprometimento cognitivo apresentaram diferenças em alguns desfechos clínicos após 32 meses, como necessidade de assistência/mudanças de rotina e novos diagnósticos de doenças específicas. Assim, a multidimensionalidade do idoso deve ser considerada ao planejar avaliações e intervenções.

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ABSTRACT. Background: Clinical follow-up studies are necessary for a better understanding of the evolution of cognitive impairment as well as the development of better assessment and intervention tools. Objective: To investigate whether older people with preserved cognition (PC), mild cognitive impairment (MCI) and mild Alzheimer's disease (AD) show differences in clinical outcomes and interventions after a 32-month period. Methods: One hundred twenty-four community-dwelling older people were included and classified in one of three groups (PC, MCI and mild AD). Information on clinical outcomes (deaths, new diagnoses, falls, need for assistance or changes in routine and hospitalizations) and interventions (increased use of medication, physiotherapeutic intervention, practice of physical exercise, etc.) in the 32-month period were collected by telephone or during a home visit on a single day. Results: Ninety-five participants (35 with PC, 33 with MCI and 27 with AD) were reevaluated after 32 months. The need for assistance/changes in routine was significantly higher in the AD group, especially with regard to basic activities of daily living. Unlike the other groups, the PC group did not show "other diagnoses" (urinary incontinence, prolapse, change in vision or autoimmune disease). No significant differences were found regarding other variables. Conclusions: Older people with and without cognitive impairment exhibited differences in some clinical outcomes after 32 months, such as need for assistance or changes in their routine and new diagnoses of specific diseases. Therefore, the multidimensionality of geriatric patients should be considered when planning assessments and interventions.

RESUMO. Introdução: Estudos com acompanhamento clínico são necessários para um melhor entendimento da evolução do quadro cognitivo e desenvolvimento de melhores estratégias de avaliação e intervenção. Objetivo: Investigar se idosos com cognição preservada (CP), comprometimento cognitivo leve (CCL) e doença de Alzheimer (DA) leve apresentam diferenças nos desfechos clínicos e intervenções realizadas ao longo de 32 meses. Métodos: A amostra foi constituída de 124 idosos residentes na comunidade foram incluídos e classificados em um dos três grupos (CP, CCL, DA leve). Informações sobre desfechos clínicos (óbitos, novos diagnósticos, quedas, necessidade de assistência ou mudanças de rotina e hospitalizações) e intervenções realizadas (aumento do uso de medicamentos, intervenção fisioterapêutica, prática de exercícios físicos e outras) foram coletadas, no período de 32 meses, por telefone ou durante visita domiciliar em um único dia. Resultados: Após 32 meses, 95 idosos (35 CP, 33 CCL e 27 DA) foram reavaliados. A necessidade de assistência/mudanças de rotina foi significativamente maior no Grupo DA, principalmente para as atividades básicas de vida diária. Diferentemente dos outros grupos, o Grupo CP não apresentou "outros diagnósticos" (incontinência urinária, prolapso, alterações visuais e doença autoimune). Nenhuma outra diferença significativa foi encontrada quanto às outras variáveis. Conclusão: Os idosos com e sem comprometimento cognitivo apresentaram diferenças em alguns desfechos clínicos após 32 meses, como necessidade de assistência/mudanças de rotina e novos diagnósticos de doenças específicas. Assim, a multidimensionalidade do idoso deve ser considerada ao planejar avaliações e intervenções.

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