Exercise training effect on skeletal muscle motor drive in older adults: A systematic review with meta-analysis of randomized controlled trials.

The meta-analysis aimed to determine whether exercise training can positively change indices of motor drive, i.e., the input from the central nervous system to the muscle, and how training characteristics, motor drive assessment, assessed muscle, and testing specificity could modulate the changes in motor drive in older adults. A random-effect meta-analysis model using standardized mean differences (Hedges' g) determined treatment effects. Moderators (e.g., training type and intensity) and meta-regressors (e.g., number of sessions) were performed using mixed- and fixed-effect models. A significant Q-test, followed by pairwise post hoc comparisons, determined differences between levels of the categorical moderators. Methodological quality was assessed using the Cochrane risk of bias tool. Ten randomized controlled trials, 290 older adults, met the inclusion criteria. Only strength and power exercise training were retrieved from the search and included in the analysis. Strength (g = 0.60, 95 % CI 0.24 to 0.96) and power training (g = 0.51, 95 % CI 0.02 to 1.00) increased motor drive compared with a control condition. High (g = 0.66; 95 % CI 0.34 to 0.97) and low-high (g = 1.23; 95 % CI 0.19 to 2.27) combinations of training intensities increased motor drive compared to the control condition. The multi-joint training and testing exercise structure (g = 1.23; 95 % CI 0.79 to 1.67) was more effective in increasing motor drive (Qdf=2 = 14.15; p = 0.001) than the multi-single joint structure (g = 0.46; 95 % CI 0.06 to 0.85). Therefore, strength and power training with high volume and intensity associated with multi-joint training and testing combination of exercises seem to improve skeletal muscle motor drive in older adults effectively.

Effect of exercise detraining in cognitive functions of older adults: A systematic review.

OBJECTIVE: Provide a synthesis of the current literature about the effects of detraining on cognitive functions in older adults. METHODS: The PICOS acronym strategy was performed in PubMed/MEDLINE, Web of Science, Cochrane Library and PsycINFO database. The Preferred Reporting Items for Systematic Review and Meta-Analyses statement had been followed in the present study, in which the search was conducted on October 2023. The study selection consisted in original articles including older adults, detraining after training exercise period, use of tests or scales to measure cognitive function. The Downs and Black checklist had been used to assess the studies quality. Sample characteristics, type of previous training, detraining period, cognitive functions measurements and main results were extracted by 2 investigators. RESULTS: From 1927 studies, 12 studies were included, being 11 studies identified via systematic research, and 1 study by citation search. Older adults, ranged from 60 to 87 years old, were assessed after detraining. The cognitive functions most evaluated were global cognition and executive functions. One study evaluated both cognitive outcome and cerebral blood flow. Most of the studies demonstrated a decline in the cognitive function after detraining. CONCLUSION: Exercise detraining period, ranging from 10 days to 16 weeks, can effect negatively the cognitive function in older adults.

Aerobic Training and Circulating Neurotrophins in Alzheimer's Disease Patients: A Controlled Trial.

OBJECTIVE: to verify the effects of aerobic exercise training in circulating BDNF, VEGF165 and IGF-1 plasma levels and cognitive function in Alzheimer's Disease (AD) patients. METHODS: 34 AD patients participated in the study, divided in two groups: Control Group (CG; n = 16) and Training Group (TG; n = 18 - Moderate aerobic training on the treadmill, three times a week, for 12 weeks). BDNF, VEGF165, and IGF-1 plasma levels were considered as a primary outcome. Secondary outcomes included cognitive functions and aerobic fitness. RESULTS: After 12 weeks, maintenance of executive functioning in the TG was found, yet no significant changes on circulating neurotrophins levels were identified. For aerobic fitness, there was an increment in TG group. CONCLUSION: Twelve weeks of aerobic training were neither effective in improving cognitive functioning significantly, nor influential on circulating neurotrophins levels in AD patients.

Circulating levels of vascular endothelial growth factor in patients with Alzheimer's disease: A case-control study.

BACKGROUND: Vascular endothelial growth factor (VEGF) and platelets seem to reflect the Alzheimer's disease (AD) associated either with vascular impairment or disease. This study aimed to compare the circulating levels of VEGF and platelets between AD patients and healthy older adults. METHODS: Seventy-two older adults, divided in 40 older adults (Clinical Dementia Rating Scale - CDR = 0); and 32 Alzheimer's disease patients (clinically diagnosed - CRD = 1) participated in the present study. The groups were paired by sex, age, comorbidities and educational level. The primary outcomes included circulating plasma VEGF and platelet levels obtained by blood collection. RESULTS: The VEGF levels were significantly different between the groups (p = 0.03), with having a large effect size ( η2 =18.15), in which the AD patients presented lower levels compared to healthy older adults. For platelets, the comparison showed a tendency to difference (p = 0.06), with a large effect size (η2 =12.95) between the groups. CONCLUSION: The VEGF levels and the platelet numbers were reduced in AD patients, suggesting that angiogenic factors could be modified due to AD.

Different types of physical exercise in brain activity of older adults: A systematic review.

BACKGROUND: To verify the effects of different modalities of physical exercise on brain activity of older adults. METHODS: Systematic searches were conducted according to the PICOS strategy and the following databases were searched: PubMed, Web of Science, PsycInfo and Scielo. Two independent evaluators performed the initial selection from reading the title and abstract based on the stipulated eligibility criteria. RESULTS: The searches resulted in 1935 titles, of which 97 were duplicated and 1793 were excluded based on reading the titles and abstracts. This phase resulted in 45 articles for detailed analysis. At this stage, 35 articles were excluded because they did not meet the eligibility criteria. The information for qualitative analysis was extracted from 10 articles that met the criteria. CONCLUSION: There was improvement in the brain activity of older adults regardless of the type of physical exercise performed (aerobic, neuromuscular, flexibility or neuromotor), but with a discrete advantage for balance and coordination exercises (neuromotor).

Cognitive screening and depressive symptoms in hypertensive and diabetic women

Abstract Aim: The objective of this study was to compare the global cognitive function and depressive symptoms in hypertensive and/or diabetic middle-aged and elderly women (52-76 years old). Methods: Sixteen participants with hypertension (HT) and 12 with hypertension and type 2 diabetes mellitus (HT+DM) were included; sociodemographic data, anthropometric measurements, and blood pressure were analyzed, and questionnaires for cognitive screening (Mini-Mental State Examination - MMSE) and depressive symptoms (Geriatric Depression Scale - GDS-30) were administered. For statistical analysis, independent Student's t-test, chi-square test (dichotomous variables), and the Mann-Whitney test (ordinal variables) were used and p < 0.05 was adopted. Results: Results indicate that there were no significant differences pertaining to depressive symptoms (HT = 7.4 ± 5.5; HT+DM = 10.2 ± 4.6 points; p = 0.1658) and global cognitive function (HT = 22.3 ± 4.2; HT+DM = 21.0 ± 3.2 points; p = 0.4015) between hypertensive women and hypertensive and diabetic women, contradicting the hypothesis that the presence of two comorbidities would intensify cognitive impairment and mental health. However, clinically relevant cognitive decline (HT = 63%; HT+DM = 75%; χ2 = 0.4834) and depressive symptoms (HT = 38%; HT+DM = 33%; χ2 = 0.8199) were found in both groups. Conclusion: It has been shown that the presence of two comorbidities: type 2 diabetes mellitus and hypertension, does not intensify cognitive impairment and mental health when compared to hypertension alone in middle-aged and elderly women.

Efficacy of Physical Exercise on Cortical Activity Modulation in Mild Cognitive Impairment: A Systematic Review.

OBJECTIVE: To investigate the effects of physical exercise on cortical activity measured via electroencephalogram (EEG) in individuals with mild cognitive impairment (MCI). DATA SOURCES: PubMed, Web of Science, PsycINFO, and SciELO databases were searched using: "physical exercise," "physical activity," "physical therapy," "exercise," "training," "electroencephalogram," "electroencephalography," "EEG," "mild cognitive impairment," "cognitive dysfunction," and "MCI." The Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement was followed and the Physiotherapy Evidence Database scale was used to assess the risk of bias of each study. STUDY SELECTION: Original articles, sample including individuals with MCI, physical exercise intervention, use of EEG to measure cortical activity. DATA EXTRACTION: Sample characteristics, physical exercise protocol characteristics, results related to effects of physical exercise on parameters derived from EEG signals, strengths, limitations, and conclusions of the studies were selected by 2 investigators. DATA SYNTHESIS: A total of 365 articles were identified in electronic databases. After the selection stage, 7 studies were included. Although there was a large spectrum of type of exercise (aerobic, resistance, multimodal, exergames, combined exercise with cognitive training), all exercise protocols altered cortical activity in patients with MCI. An exercise session (acute response) causes power reduction of delta band and increases complexity and P300 amplitude in resting-state EEG. After an intervention with an exercise program (chronic response), there was a reduction in the power of delta and theta bands and an increase in beta and alpha bands, as well an increase in complexity in resting-state EEG. CONCLUSIONS: Physical exercise seems to play a role in cortical activity in patients with MCI, suggesting neural plasticity in such individuals.

Acute exercise increases circulating IGF-1 in Alzheimer's disease patients, but not in older adults without dementia.

OBJECTIVES: Increased Insulin-like growth factor I (IGF-1) has been associated with improvement of cognitive function in response to exercise. Evidences indicate a role for IGF-1 in beta-amyloid clearance and reducing hyperphosphorylation tau in Alzheimer's disease (AD). There is a need to investigate the IGF-1 response to exercise in AD patients due to well-known potential effects of exercise on IGF-1. The aim of this study was to examine circulating IGF-1 levels in AD patients and older adults without dementia after acute exercise and to verify the associations among cardiorespiratory fitness, cognition and IGF-1 levels. METHOD: Seventy-four older adults (40 older adults without dementia and 34 AD patients) participated in this study. The outcomes included IGF-1 plasma levels and performance in the submaximal exercise stress test. Secondary outcomes included cognitive functions, depressive symptoms, level of physical activity, insulin-resistance, and cholesterol. All participants performed the incremental test on a treadmill and IGF-1 was collected before and after the exercise. RESULTS: A tendency to the difference of baseline IGF-1 plasma levels between the groups was found. After the acute exercise AD patients also presented higher levels of circulating IGF-1 compared to the Older adults without dementia. Correlations among cardiorespiratory fitness and cognitive functions were found. CONCLUSION: The findings suggest that AD patients and older adults respond differently to acute exercise in terms of circulating IGF-1 levels. This response seems to indicate either an IGF-1 resistance or a compensatory exercise-induced to lower IGF-1 levels in AD patients. Cardiorespiratory fitness is associated with global cognition, executive function, attention and information processing speed.

Physical exercise, IGF-1 and cognition A systematic review of experimental studies in the elderly.

One of hypothetical mechanisms related to cognition is exercise-induced IGF-1. OBJECTIVE: The aim of this study was to analyze the effects of exercise on IGF-1 levels and cognition in the elderly. METHODS: The article searches were conducted on Pubmed, Web of Science, PsycINFO and Scielo databases and reviewed according to PRISMA guidelines. The inclusion criteria were: [1] original articles published up to 2017; [2] samples including elderly; [3] protocols including physical exercise; [4] longitudinal studies having exercise as main outcome; [5] assessment of IGF-1; [6] cognition assessment. RESULTS: Seven studies were included in this review. Three of the studies showed an exercise-induced increase in IGF-1; three found stable IGF-1 levels and one found a reduction in IGF-1; with and without improvement in cognition. CONCLUSION: Disparities in the type of physical exercise, protocols and samples under different conditions hinder the establishment of a consensus on IGF-1, cognition and physical exercise.

Um dos mecanismos hipotéticos relacionados a cognição é o IGF-1 induzido pelo exercício. OBJETIVO: O objetivo deste estudo foi analisar os efeitos do exercício físico nos níveis de IGF-1 e na cognição de idosos. MÉTODOS: A busca de artigos foi conduzida nas bases de dados Pubmed, Web of Science, PsycINFO e Scielo, revisada de acordo com as recomendações do PRISMA. O critério de inclusão adotado foi: [1] artigos originais publicados até 2017; [2] amostras incluindo idosos; [3] protocolos que incluíssem exercício físico; [4] ensaios randomizados, não randomizados, controlados e não controlados; [5] avaliação dos níveis de IGF-1; [6] avaliação cognitive. RESULTADOS: Sete estudos foram incluídos nesta revisão. Três deles mostraram aumento de IGF-1 por meio do exercício; três verificaram manutenção nos níveis de IGF-1 e um, verificou redução de IGF-1; com e sem melhora cognitive. CONCLUSÃO: Diferenças nos tipos de exercício, protocolos, amostras em diferentes condições dificultam o estabelecimento de um consenso em relação ao IGF-1, cognição e exercício físico.

Physical exercise, IGF-1 and cognition: a systematic review of experimental studies in the elderly / Exercício físico, IGF11 e cognição: uma revisão sistemática de estudos experimentais em idosos

ABSTRACT One of hypothetical mechanisms related to cognition is exercise-induced IGF-1. Objective: The aim of this study was to analyze the effects of exercise on IGF-1 levels and cognition in the elderly. Methods: The article searches were conducted on Pubmed, Web of Science, PsycINFO and Scielo databases and reviewed according to PRISMA guidelines. The inclusion criteria were: [1] original articles published up to 2017; [2] samples including elderly; [3] protocols including physical exercise; [4] longitudinal studies having exercise as main outcome; [5] assessment of IGF-1; [6] cognition assessment. Results: Seven studies were included in this review. Three of the studies showed an exercise-induced increase in IGF-1; three found stable IGF-1 levels and one found a reduction in IGF-1; with and without improvement in cognition. Conclusion: Disparities in the type of physical exercise, protocols and samples under different conditions hinder the establishment of a consensus on IGF-1, cognition and physical exercise.

RESUMO. Um dos mecanismos hipotéticos relacionados a cognição é o IGF-1 induzido pelo exercício. Objetivo: O objetivo deste estudo foi analisar os efeitos do exercício físico nos níveis de IGF-1 e na cognição de idosos. Métodos: A busca de artigos foi conduzida nas bases de dados Pubmed, Web of Science, PsycINFO e Scielo, revisada de acordo com as recomendações do PRISMA. O critério de inclusão adotado foi: [1] artigos originais publicados até 2017; [2] amostras incluindo idosos; [3] protocolos que incluíssem exercício físico; [4] ensaios randomizados, não randomizados, controlados e não controlados; [5] avaliação dos níveis de IGF-1; [6] avaliação cognitive. Resultados: Sete estudos foram incluídos nesta revisão. Três deles mostraram aumento de IGF-1 por meio do exercício; três verificaram manutenção nos níveis de IGF-1 e um, verificou redução de IGF-1; com e sem melhora cognitive. Conclusão: Diferenças nos tipos de exercício, protocolos, amostras em diferentes condições dificultam o estabelecimento de um consenso em relação ao IGF-1, cognição e exercício físico.

Effects of Physical Exercise on the P300 of Elderly With Alzheimer's Disease.

BACKGROUND: Evidence regarding the benefits of physical activity on the mental processing information of patients with Alzheimer's disease assessed objectively is scarce and can be observed through event-related potentials, such as the P300. The aim of the study was to identify the effects of physical exercises on mental processing information in the elderly with Alzheimer's disease through neurophysiological measures (P300 amplitude and latency) and reaction time. METHODS: A total of 31 patients with Alzheimer's disease participated in this study: 14 in functional exercise (FE) group and 17 in social gathering (SG) group who carried out three 1-hour sessions per week of FE and SG activities, respectively, for a 12-week period. All groups performed an auditory oddball task. A healthy elderly control group also participated. RESULTS: Significant (P < .05) improvements were observed as a reduction of reaction time after intervention in the FE group (pre = 421.5 ms and post = 360.9 ms). Also, an increase of P300 amplitude at central midline (pre = 5.9 µV and post = 6.9 µV) and parietal midline (pre = 4.7 µV and post = 5.7 µV) was observed in the FE. Finally, a decrease in the P300 latency at frontal midline (pre = 377 ms and post = 367 ms) was observed in the SG after the intervention. CONCLUSION: Physical exercise decreases reaction time and suggests a recovery in cortical activity, whereas SG activities could probably facilitate information processing.

Physical exercise and vascular endothelial growth factor (VEGF) in elderly: A systematic review.

UNLABELLED: The aim of this study was to conduct a systematic review of studies that verified the effects of physical exercise on vascular endothelial growth factor (VEGF) in elderly. METHODOLOGY: The bibliographic search was conducted in five database, from 1990 to 2013, with the following keywords and boolean operators: physical exercise OR physical exercise OR physical therapy OR exercise OR training AND VEGF OR vascular endothelial growth factor AND aged OR older OR elderly. The inclusion criteria were: (1) sample including elderly with average age of 60; (2) studies that verified the effects of acute exercise; (3) studies that verified the effects of chronic physical exercise; (4) studies with humans; (5) randomized controlled trials, randomized non-controlled trials, non-randomized controlled trials, non-randomized and non-controlled trials; (6) assessment of VEGF peripheral concentrations. RESULTS: Ten studies were selected, and that four of them verified an increase of VEGF concentrations after practicing physical exercise and six studies did not verify any change on VEGF concentrations. CONCLUSION: Different populations found in this study and the different exercise protocols applied in the studies of this review make it difficult to establish parameters of what would be the best type of exercise to promote an increase on the concentrations of VEGF in the elderly. Therefore, we suggest that further studies can be performed, so that we can establish some recommendations for this population.

Acute aerobic exercise increases brain-derived neurotrophic factor levels in elderly with Alzheimer's disease.

Studies indicate the involvement of brain-derived neurotrophic factor (BDNF) in the pathogenesis of Alzheimer's disease (AD). Decreased BDNF levels may constitute a lack of trophic support and contribute to cognitive impairment in AD. The benefits of acute and chronic physical exercise on BDNF levels are well-documented in humans, however, exercise effects on BDNF levels have not been analyzed in older adults with AD. The aim of this study was to investigate the effects of acute aerobic exercise on BDNF levels in older adults with AD and to verify associations among BDNF levels, aerobic fitness, and level of physical activity. Using a controlled design, twenty-one patients with AD (76.3 ± 6.2 years) and eighteen healthy older adults (74.6 ± 4.7 years) completed an acute aerobic exercise. The outcomes included measures of BDNF plasma levels, aerobic fitness (treadmill grade, time to exhaustion, VO2, and maximal lactate) and level of physical activity (Baecke Questionnaire Modified for the Elderly). The independent t-test shows differences between groups with respect to the BDNF plasma levels at baseline (p = 0.04; t = 4.53; df = 37). In two-way ANOVA, a significant effect of time was found (p = 0.001; F = 13.63; df = 37), the aerobic exercise significantly increased BDNF plasma levels in AD patients and healthy controls. A significant correlation (p = 0.04; r = 0.33) was found between BDNF levels and the level of physical activity. The results of our study suggest that aerobic exercise increases BDNF plasma levels in patients with AD and healthy controls. In addition to that, BDNF levels had association with level of physical activity.

Análise de protocolos com intervenção motora domiciliar para pacientes com doença de Alzheimer: uma revisão sistemática / Protocol analysis with home-based motor intervention for patients with Alzheimer's disease: a systematic review

A prática regular de atividade física é indicada como uma terapia não farmacológica ao tratamento da doença de Alzheimer por promover benefícios cognitivos, comportamentais e funcionais. Pouco se sabe, porém, sobre os protocolos com intervenção motora domiciliar para essa população. Pensando nisso, esta revisão teve como objetivo investigar e analisar os protocolos de intervenção motora domiciliar para idosos com doença de Alzheimer descritos em artigos científicos. Realizou-se busca sistemática, sem limite de data, nas seguintes bases de dados: Web of Science, PubMed, PsycINFO e Scopus. Utilizaram-se os seguintes operadores booleanos e palavras-chave: "home-based exercise" OR "home-based physical exercise" OR "home-based physical fitness" OR "home-based rehabilitation" OR "home-based physical therapy" OR "home-based physical activity" OR "home-based motor intervention" and "AD" OR "Alzheimer's disease" OR "Alzheimer" OR "Alzheimer's dementia". Realizou-se também uma busca manual nas listas de referência dos artigos selecionados. Dos cinco artigos que atenderam aos critérios de inclusão adotados, três realizaram um protocolo de intervenção motora domiciliar, conseguindo boa adesão ao programa, melhora geral da saúde e diminuição de sintomas depressivos. Os outros dois estudos limitaram-se a descrever os protocolos. Apesar de serem necessários mais estudos, com protocolos mais detalhados, esta revisão permitiu mostrar que protocolos de intervenção motora domiciliar também podem produzir efeitos positivos tanto para pacientes quanto para cuidadores.

The regular practice of physical therapy is indicated as a non-pharmacological treatment of Alzheimer's disease by promoting cognitive, behavioral and functional benefits. However, little is known about the protocols with home-based motor intervention for this population. Thinking about it, this review aimed to investigate and analyze the protocols for home-based motor intervention for elderly with Alzheimer's disease described in scientific articles. A systematic search was performed in the following databases: Web of Science, PubMed, PsycINFO, and Scopus, using the following keywords and Boolean operators: "home-based exercise" OR "home-based physical exercise" OR "home-based physical fitness" OR "home-based rehabilitation" OR "home-based physical therapy" OR "home-based physical activity" OR "home-based engine Intervention" and "AD" OR "Alzheimer's disease" OR "Alzheimer " OR "Alzheimer's dementia". We also conducted a manual search of reference lists of selected articles. Of the five articles that met the inclusion criteria adopted, three performed a protocol for home motor intervention, achieving good compliance with the program, improvement of general health and reduction of depressive symptoms. The other two studies were limited to describing the protocols. Although more studies are needed, with detailed protocols, this review allowed to show that protocols for home motor intervention can also produce positive effects for both patients and caregivers.

Effects of resistance training on the performance of activities of daily living in patients with Alzheimer's disease.

AIM: The objective of this study was to investigate the effects of resistance training in activities of daily living performance in Alzheimer's disease (AD) patients. METHODS: An exploratory and longitudinal study, lasting for 16 weeks, with the participation of 34 patients divided equally in: the training group (TG), who participated in a resistance training protocol (three sets of 20 repetitions in five exercises); and the social gathering group (SGG), who participated in a social interaction protocol (i.e. group dynamics, writing and reading activities). RESULTS: We observed significant differences between the groups in moving around the house, climbing stairs, standing up from the floor and putting on socks tests. CONCLUSION: This study showed that resistance training improves agility, lower limb strength, balance and flexibility in AD patients, while SGG protocol is important to improve the agility.

Apathy, cognitive function and motor function in Alzheimers disease / Apatia, funções cognitivas e funcionalidade motora em idosos com doença de alzheimer

The aims of this study were to characterize the presence of apathy in patients with AD, determine the relationshipbetween apathy, motor function and cognitive function, and to verify differences among patients stratified by level of apathy inrelation to cognitive and motor abilities. Methods: A cross-sectional study was conducted of 37 patients with AD. The followingtests were used: MoCA, the Frontal Assessment Battery, Verbal Fluency, Clock Drawing Test, Andreotti & Okuma BatteryTests, Sit and Reach, Resistance of Upper Limbs - AAHPERD Battery Test, Sit and Lift Chair and the Apathy domain of theNeuropsychiatric Inventory. After verifying the normality of the data distribution, comparisons were made using Students t-testand the U Mann Whitney test; relationships were also assessed using Pearsons and Spearmans correlation coefficients. Allanalyses were considered to be statistically significant at a p-value of 0.05. Results: 46% of participants in this study showedmild symptoms of apathy. Significant and weak associations were found (p=0.04) between apathy and the attention domainon the MoCA and between apathy and the Walk Test. Analysis of differences in cognitive and motor functions according toparticipants level of apathy revealed no significant differences for any of the variables. Conclusion: Apathy was reflectedin attention and the Walk Test, suggesting these variables may be related to cognitive and functional decline in AD patients.

Os objetivos deste estudo compreendem: caracterizar a presença de apatia em pacientes com doença de Alzheimer(DA); verificar se há relação entre apatia, funções cognitivas e funcionalidade motora dos mesmos e analisar se há diferençasentre os pacientes, separados por nível de apatia, em relação às suas funções cognitivas e funcionalidade motora. Métodos:Trata-se de um estudo com delineamento transversal. Ao todo 37 pacientes com DA compuseram a amostra. Foramutilizados os seguintes testes: Mini-Exame de Estado Mental, Montreal Cognitive Assessment (MoCA), Bateria de AvaliaçãoFrontal, Teste de Fluência Verbal Semântica, Teste do Desenho do Relógio, Bateria de Testes de Andreotti & Okuma, Teste deSentar e Alcançar, Resistência de Membros Superiores da AAHPERD, Teste Sentar-se e Levantar-se da Cadeira e o domínioApatia do Inventário Neuropsiquiátrico. Após verificar a distribuição dos dados as comparações seguiram através dos testest student e U Mann Whitney e as relações, através das correlações de Pearson e Spearman. Todas as análises admitiramnível de significância de 5%. Resultados: 46% dos participantes deste estudo apresentam sintomatologia para apatia emnível leve. Foram verificadas relações significativas e fracas (p=0,04) entre apatia e o domínio atenção do MoCA e entreapatia e o Teste de Caminhar. Ao verificar a diferença nas funções cognitivas e funcionalidade motora segundo o nível deapatia dos participantes não foram encontradas diferenças significativas para nenhuma das variáveis analisadas. Conclusão:Apatia relaciona-se com a atenção e o Teste de Caminhar sugerindo que estas variáveis podem estar relacionadas com odeclínio cognitivo e funcional dos pacientes com esta patologia.

Effects of weight training on cognitive functions in elderly with Alzheimers disease / Efeitos do treinamento com pesos nas funções cognitivas de idosos com doença de alzheimer

Deterioration in cognitive functions is characteristic in Alzheimers disease (AD) and may be associated with decline in daily living activities with consequent reduced quality of life. Objective: To analyze weight training effects oncognitive functions in elderly with AD. Subjects: 34 elderly with AD were allocated into two groups: Training Group (TG)and Social Gathering Group (SGG). Methods: Global cognitive status was determined using the Mini-Mental State Exam.Specific cognitive functions were measured using the Brief Cognitive Battery, Clock Drawing Test and Verbal Fluency Test.The protocols were performed three times a week, one hour per session. The weight training protocol consisted of threesets of 20 repetitions, with two minutes of rest between sets and exercises. The activities proposed for the SGG were not systematized and aimed at promoting social interaction among patients. The statistical analyses were performed with the UMann Whitney and Wilcoxon tests for group comparisons. All analyses were considered statistically significant at a p-value of0.05. Results: There were no significant differences associated to the effects of the practice of weight training on cognitionin AD patients. Conclusion: In this study, no improvement in cognitive functions was evident in elderly with AD who followeda low intensity resistance exercise protocol. Thus, future studies could evaluate the effect of more intense exercise programs.

A deterioração das funções cognitivas é característica na doença de Alzheimer (DA) e se relaciona com uma piorrealização das atividades de vida diária levando a uma pior qualidade de vida. Objetivo: Analisar os efeitos de um programade treinamento com pesos nas funções cognitivas de idosos com DA. Sujeitos: 34 idosos com DA foram alocados em dois grupos: Grupo Treinamento (GT) e Grupo de Convívio Social (GCS). Métodos: Para caracterização do perfil cognitivo global utilizou-se o Mini-Exame de Estado Mental. Para a mensuração das funções cognitivas foram utilizadas: Bateria Cognitiva Breve, Teste do Desenho do Relógio e teste de Fluência Verbal. Os protocolos oferecidos foram realizados três vezes na semana, durante uma hora. O protocolo de treinamento do GT consistiu em realizar três séries de 20 repetições para cada exercício, com dois minutos de intervalo entre séries e entre exercícios. As atividades propostas para o GCS não foram sistematizadas e tiveram por objetivo promover uma socialização dos pacientes. A análise estatística consistiu na utilização dos testes U Mann Whitney e Wilcoxon para comparação intra e entre grupos. Adotou-se nível de significância de 5% para todas as análises. Resultados: Não foram evidenciadas diferenças significativas relacionadas aos efeitos da prática do treinamento com pesos na cognição de idosos com DA. Conclusão: Neste estudo não houve melhora nas funções cognitivas em idosos com DA que realizaram um protocolo de exercícios resistidos de intensidade leve. Assim, estudos futuros poderiam verificar o efeito de exercícios mais intensos.

Nível de atividade física, sono e qualidade de vida de pacientes com doença de Alzheimer / Level of physical activity, sleep and quality of life of patients with Alzheimer?s disease

A atividade física (AF) tem sido considerada um importante recurso não farmacológico, que pode proporcionar benefícios ao sono e à qualidade de vida de pacientes com Doença de Alzheimer (DA). O presente estudo teve por objetivo analisar a relação entre nível de atividade física, distúrbios do sono e qualidade de vida em pacientes com DA. Participaram deste estudo 30 pacientes com DA. Para mensurar nível de AF, sono e qualidade de vida foram utilizados, respectivamente: Questionário Baecke Modificado para Idosos, Mini Questionário do Sono e Escala de avaliação da qualidade de vida na Doença de Alzheimer ? respondida pelo paciente e cuidador. Para comparação do sono e da qualidade de vida, em função do nível da prática de AF, a amostra foi dividida em dois grupos (maior e menor nível de AF). Para verificar relações entre as variáveis e comparar os grupos foram empregados, respectivamente, os seguintes testes: correlação de Spearman e o teste de U de Mann Whitney. Foi admitido o nível de significância de 5% para as análises. Os pacientes apresentaram um baixo nível de AF e foi encontrada relação positiva, moderada e significativa (rho = 0,4; p = 0,01) entre nível de AF e qualidade de vida do cuidador. Concluímos, assim, que cuidadores de pacientes mais ativos possuem uma melhor qualidade de vida e não existe relação entre sono e qualidade de vida e nível de AF de pacientes com DA.

Physical activity (PA) has been considered an important non pharmacological feature that provides benefits on sleeping and quality of life of patients with Alzheimer?s disease (AD). The aim of this research was to analyze the relation of the level of PA; sleep disturbances and quality of life in pacients with AD. The study included 30 patients with PA. To measure PA level, sleeping and quality of life, it was used, respectively: Modified Baecke Questionnaire for the Elderly, Mini Sleep Questionnaire and Quality of life assessment scale on Alzheimer?s disease ? answered by the patients and their caregivers. For comparçliing of sleeping and quality of life, the sample was divided into two groups (higher and lower PA levels). In order to verify relations between the variables, and for the comparison both groups, it was used, respectively: Spearman correlation and U-Mann Whitney tests. It was admitted the level of significance at 5% for all analyzes. Patients had a low level of PA and it was only found relationship positive, moderated and significant (rho = 0,4; p = 0,01) between the level of PA and the caregiver?s quality of life. Thus, the caregivers of more active patients have a better quality of life and, there were no differences in sleep and quality of life when comparing the lowest and the highest level of PA groups of patients with AD.

Depressive symptoms and level of physical activity in patients with Alzheimer's disease.

AIM: The purpose of this study was to determine the presence of depressive symptoms in patients with Alzheimer's disease, to assess whether there was an association between physical activity level and depressive symptoms in this population, and to assess whether more active patients had lower rates of depressive symptoms when compared with less active patients. METHODS: The study included 37 patients with Alzheimer's disease and used the following instruments: the Geriatric Depression Scale, the Cornell Scale for Depression in Dementia and the Baecke Questionnaire Modified for the Elderly. The Shapiro-Wilk test was used to determine whether the data were normally distributed. The Spearman correlation test and the Mann-Whitney U-test was used. P-values less than 5% were considered statistically significant. RESULTS AND DISCUSSION: The prevalence of depressive symptoms in the sample was 35.13%. The Spearman correlation test verified the relationship between level of physical activity and depressive symptoms (rho = -0,4), and between the sports activities domain and depressive symptoms (rho = -0,4). Patients who were more active had lower depressive symptoms. CONCLUSIONS: The prevalence of depressive symptoms in the sample was 35.13%. Patients who were more active had lower rates of depressive symptoms.

Apathy, cognitive function and motor function in Alzheimer's disease.

The aims of this study were to characterize the presence of apathy in patients with AD, determine the relationship between apathy, motor function and cognitive function, and to verify differences among patients stratified by level of apathy in relation to cognitive and motor abilities. METHODS: A cross-sectional study was conducted of 37 patients with AD. The following tests were used: MoCA, the Frontal Assessment Battery, Verbal Fluency, Clock Drawing Test, Andreotti & Okuma Battery Tests, Sit and Reach, Resistance of Upper Limbs - AAHPERD Battery Test, Sit and Lift Chair and the Apathy domain of the Neuropsychiatric Inventory. After verifying the normality of the data distribution, comparisons were made using Student's t-test and the U Mann Whitney test; relationships were also assessed using Pearson's and Spearman's correlation coefficients. All analyses were considered to be statistically significant at a p-value of 0.05. RESULTS: 46% of participants in this study showed mild symptoms of apathy. Significant and weak associations were found (p=0.04) between apathy and the attention domain on the MoCA and between apathy and the Walk Test. Analysis of differences in cognitive and motor functions according to participants' level of apathy revealed no significant differences for any of the variables. CONCLUSION: Apathy was reflected in attention and the Walk Test, suggesting these variables may be related to cognitive and functional decline in AD patients.

Os objetivos deste estudo compreendem: caracterizar a presença de apatia em pacientes com doença de Alzheimer (DA); verificar se há relação entre apatia, funções cognitivas e funcionalidade motora dos mesmos e analisar se há diferenças entre os pacientes, separados por nível de apatia, em relação às suas funções cognitivas e funcionalidade motora. MÉTODOS: Trata-se de um estudo com delineamento transversal. Ao todo 37 pacientes com DA compuseram a amostra. Foram utilizados os seguintes testes: Mini-Exame de Estado Mental, Montreal Cognitive Assessment (MoCA), Bateria de Avaliação Frontal, Teste de Fluência Verbal Semântica, Teste do Desenho do Relógio, Bateria de Testes de Andreotti & Okuma, Teste de Sentar e Alcançar, Resistência de Membros Superiores da AAHPERD, Teste Sentar-se e Levantar-se da Cadeira e o domínio Apatia do Inventário Neuropsiquiátrico. Após verificar a distribuição dos dados as comparações seguiram através dos testes t student e U Mann Whitney e as relações, através das correlações de Pearson e Spearman. Todas as análises admitiram nível de significância de 5%. RESULTADOS: 46% dos participantes deste estudo apresentam sintomatologia para apatia em nível leve. Foram verificadas relações significativas e fracas (p=0,04) entre apatia e o domínio atenção do MoCA e entre apatia e o Teste de Caminhar. Ao verificar a diferença nas funções cognitivas e funcionalidade motora segundo o nível de apatia dos participantes não foram encontradas diferenças significativas para nenhuma das variáveis analisadas. CONCLUSÃO: Apatia relaciona-se com a atenção e o Teste de Caminhar sugerindo que estas variáveis podem estar relacionadas com o declínio cognitivo e funcional dos pacientes com esta patologia.