Correlates of a Recent History of Disabling Low Back Pain in Community-dwelling Older Persons: The Pain in the Elderly (PAINEL) Study.

OBJECTIVES: To investigate the correlates of a recent history of disabling low back pain (LBP) in older persons. MATERIALS AND METHODS: The Pain in the Elderly (PAINEL) Study was derived from the Frailty among Brazilian Older Adults (FIBRA) Network Study. Data were collected through face-to-face/telephone interviews and clinical examination. A series of logistic regressions assessed associations between a recent history of disabling LBP and sociodemographic, physical/lifestyle, and psychological factors. RESULTS: Of the 378 community-dwelling elders included in the study (age±SD, 75.5±6.1), 9.3% experienced LBP that was bad enough to limit or change their daily activities during the past year. Those reporting a recent history of disabling LBP were more likely to be women and under financial strain, to present poor self-rated health, overweight, multimorbidity, low physical activity level, fatigue, depressive symptomatology/diagnosis and fear beliefs, and to report decreased sleep time, prolonged sitting time, chronic pain (in location other than lower back), and frequently recurring LBP. The multivariate logistic regression analysis indicated that overweight (odds ratio [OR], 29.6; 95% confidence interval [CI], 2.3-391.0), low physical activity level (OR, 4.4; 95% CI, 1.3-15.4), fatigue (OR, 10.3; 95% CI, 2.4-43.4), depression diagnosis (OR, 4.9; 95% CI, 1.3-18.4), and frequently recurring LBP (OR, 4.6; 95% CI, 1.0-20.1) were independently associated with a recent history of disabling LBP. DISCUSSION: Our study supports the link between disabling LBP and other age-related chronic conditions in a middle-income country with a rapidly aging population.

Factors associated with attitudes and beliefs of elders with acute low back pain: data from the study Back Complaints in the Elders (BACE)

ABSTRACT Background The attitudes and beliefs that older people have about acute low back pain (LBP) may influence the coping mechanisms and the adoption of treatment strategies in this population. Objective The aim of this study was to identify the factors associated with the attitudes and beliefs of elderly patients with acute low back pain using the Back Beliefs Questionnaire. Method This is a cross-sectional study with a subsample of the study “Back Complaints in the Elders” (BACE), composed of 532 older Brazilians of both genders with acute LBP. We investigated sociodemographic and clinical aspects, self-perceived health, psychosocial and emotional state, falls, and functional capacity. Multiple regression models were constructed to measure possible associations. Results The percentage of female participants was 85.7% and the mean age was 69.04 (SD=6.2). Disability, symptoms of depression, and expectation of return to activities were independently associated with attitudes and beliefs concerning LBP. Conclusion Screening of psychosocial factors is essential to the prevention of persistent and recurrent LBP. Early signs of these factors can help identify symptoms and behaviors for effective interventions.

Effects of a progressive resistance exercise program with high-speed component on the physical function of older women with sarcopenic obesity: a randomized controlled trial

ABSTRACT Background Sarcopenic obesity is associated with disability in older people, especially in women. Resistance exercises are recommended for this population, but their efficacy is not clear. Objective To evaluate the effects of a progressive resistance exercise program with high-speed component on the physical function of older women with sarcopenic obesity. Method Twenty-eight women 65 to 80 years old, with a body mass index ≥30kg/m2 and handgrip strength ≤21kg were randomly allocated to two groups. The experimental group underwent a 10-week resistance exercise program designed to improve strength, power, and endurance of lower-limb muscles, with open chain and closed chain exercises. The control group had their health status monitored through telephone calls. The primary outcomes were lower limb muscle performance measured by knee extensor strength, power and fatigue by isokinetic dynamometry, and mobility measured by the Short Physical Performance Battery and by gait velocity. The secondary outcome was health-related quality of life assessed by the SF-36 Questionnaire. Results The average rate of adherence was 85%, with few mild adverse effects. There were no significant between-group differences for any of the outcomes. Conclusion In this study, a progressive resistance exercise program with high-speed component was not effective for improving the physical function of older women with sarcopenic obesity.

Factors associated with attitudes and beliefs of elders with acute low back pain: data from the study Back Complaints in the Elders (BACE).

Background: The attitudes and beliefs that older people have about acute low back pain (LBP) may influence the coping mechanisms and the adoption of treatment strategies in this population. Objective: The aim of this study was to identify the factors associated with the attitudes and beliefs of elderly patients with acute low back pain using the Back Beliefs Questionnaire. Method: This is a cross-sectional study with a subsample of the study "Back Complaints in the Elders" (BACE), composed of 532 older Brazilians of both genders with acute LBP. We investigated sociodemographic and clinical aspects, self-perceived health, psychosocial and emotional state, falls, and functional capacity. Multiple regression models were constructed to measure possible associations. Results: The percentage of female participants was 85.7% and the mean age was 69.04 (SD=6.2). Disability, symptoms of depression, and expectation of return to activities were independently associated with attitudes and beliefs concerning LBP. Conclusion: Screening of psychosocial factors is essential to the prevention of persistent and recurrent LBP. Early signs of these factors can help identify symptoms and behaviors for effective interventions.

Fundão Dam collapse: Oceanic dispersion of River Doce after the greatest Brazilian environmental accident.

On 5 November 2015, the Fundão tailings dam collapsed and its content first reached River Doce and then the Atlantic Ocean by 22 November. This study focuses on the oceanic time and space patterns of river discharge dispersion. By using an ocean model together with nLw(555) and RGB images from MODIS sensors, the river plume was followed for 2months after the arrival of the tailings at the ocean. The results show the huge effect of this accident and reveal that riverine waters may have dispersed hundreds of kilometres, reaching regions as far as the shelf in front of the city of Rio de Janeiro. The movement of the freshwater was essentially to the south in accordance with the seasonal wind regime. Episodic frontal systems, leading to wind reversion, and oceanic mesoscale features contribute to the offshore dispersion of the plume. The region more often in contact with the riverine waters was located at the inner shelf between the river mouth and the city of Vitória, turning to the outer shelf and shelf break at lower latitudes.

Effects of a progressive resistance exercise program with high-speed component on the physical function of older women with sarcopenic obesity: a randomized controlled trial.

BACKGROUND: Sarcopenic obesity is associated with disability in older people, especially in women. Resistance exercises are recommended for this population, but their efficacy is not clear. OBJECTIVE: To evaluate the effects of a progressive resistance exercise program with high-speed component on the physical function of older women with sarcopenic obesity. METHOD: Twenty-eight women 65 to 80 years old, with a body mass index ≥30kg/m2 and handgrip strength ≤21kg were randomly allocated to two groups. The experimental group underwent a 10-week resistance exercise program designed to improve strength, power, and endurance of lower-limb muscles, with open chain and closed chain exercises. The control group had their health status monitored through telephone calls. The primary outcomes were lower limb muscle performance measured by knee extensor strength, power and fatigue by isokinetic dynamometry, and mobility measured by the Short Physical Performance Battery and by gait velocity. The secondary outcome was health-related quality of life assessed by the SF-36 Questionnaire. RESULTS: The average rate of adherence was 85%, with few mild adverse effects. There were no significant between-group differences for any of the outcomes. CONCLUSION: In this study, a progressive resistance exercise program with high-speed component was not effective for improving the physical function of older women with sarcopenic obesity.

Isokinetic performance of knee flexor and extensor muscles in community-dwelling elderly women / Desempenho dos músculos flexores e extensores de joelho de idosas da comunidade no dinamômetro isocinético

AbstractIntroduction The isokinetic dynamometer enables accurate assessment of muscle function. In Brazil, few studies have assessed the isokinetic muscle performance in older adults making interpretation and comparison of results with other studies.Objectives To conduct a descriptive analysis of the performance of the muscle flexor and extensor muscles of the knee joint in elderly community and compare the performance between the age groups 65-74 years and 75 years or more.Methods This is a cross sectional observational study with a convenience sample of 229 elderly community. For the analysis of muscle performance was used isokinetic dynamometer (Biodex System 3 Pro™) in the angular velocities of 60 °/s and 180 °/s. The variables evaluated were peak torque, peak torque normalized by body weight, total work normalized by body mass, total work, average power and agonist/antagonist ratio. Descriptive analysis was used to characterize the sample. For comparison between age groups was used Student's t-test with α = 0.05.Results The elderly women with older age showed a statistically significant decrease in most of the variables (p < 0.05) except for the agonist and antagonist knee (p = 0.398).Conclusions The isokinetic was a sensitive tool to characterize the modifications caused by aging on muscle function. Elderly with results below the lower limits of the confidence intervals for all variables certainly has a decreased strength for the age group evaluated and must be addressed therapeutically. The results can be used as a benchmark in clinical practice and future research.

ResumoIntrodução O dinamômetro isocinético possibilita a avaliação acurada da função muscular. No Brasil, poucos estudos avaliaram o desempenho muscular isocinético em idosos, dificultando a interpretação e comparação dos resultados com outros estudos.Objetivos Realizar uma análise descritiva do desempenho muscular dos músculos flexores e extensores da articulação do joelho de idosas da comunidade e comparar o desempenho entre as faixas etárias de 65 a 74 anos e 75 anos ou mais.Métodos Trata-se de um estudo observacional transversal, com uma amostra de conveniência com 229 idosas da comunidade. Para a análise do desempenho muscular foi utilizado o dinamômetro isocinético (Biodex System 3 Pro®) nas velocidades angulares de 60 °/s e 180 °/s. As variáveis avaliadas foram o pico torque, pico de torque normalizado pela massa corporal, trabalho normalizado pela massa corporal, trabalho total, potência e a relação agonista/antagonista. Foi utilizada análise descritiva para caracterização da amostra. Para comparação entre as faixas etárias foi usado o teste-t de Student considerando α = 0,05.Resultados As idosas com idade mais avançada apresentaram um decréscimo estatisticamente significativo na maioria das variáveis analisadas (p < 0,05) com exceção da relação agonista e antagonista do joelho (p = 0,398).Conclusão O dinamômetro isocinético foi um instrumento sensível para caracterizar as modificações ocasionadas pelo envelhecimento na função muscular. Idosas com resultados abaixo dos limites inferiores dos intervalos de confiança para as variáveis pesquisadas apresentam uma força diminuída para a faixa etária avaliada e devem ser abordadas terapeuticamente. Os resultados podem ser utilizados como parâmetro de comparação na prática clínica e em futuras pesquisas.

Prospective monitoring and self-report of previous falls among older women at high risk of falls and fractures: a study of comparison and agreement.

BACKGROUND: The identification of the occurrence of falls is an important step for screening and for rehabilitation processes for the elderly. The methods of monitoring these events are susceptible to recording biases, and the choice of the most accurate method remains challenging. OBJECTIVES: (i) To investigate the agreement between retrospective self-reporting and prospective monitoring of methods of recording falls, and (ii) to compare the retrospective self-reporting of falls and the prospective monitoring of falls and recurrent falls over a 12-month period among older women at high risk of falls and fractures. METHOD: A total of 118 community-dwelling older women with low bone density were recruited. The incidence of falls was monitored prospectively in 116 older women (2 losses) via monthly phone calls over the course of a year. At the end of this monitoring period, the older women were asked about their recall of falls in the same 12-month period. The agreement between the two methods was analyzed, and the sensitivity and specificity of self-reported previous falls in relation to the prospective monitoring were calculated. RESULTS: There was moderate agreement between the prospective monitoring and the retrospective self-reporting of falls in classifying fallers (Kappa = 0.595) and recurrent fallers (Kappa = 0.589). The limits of agreement were 0.35 ± 1.66 falls. The self-reporting of prior falls had a 67.2% sensitivity and a 94.2% specificity in classifying fallers among older women and a 50% sensitivity and a 98.9% specificity in classifying recurrent fallers. CONCLUSION: Self-reporting of falls over a 12-month period underestimated 32.8% of falls and 50% of recurrent falls. The findings recommend caution if one is considering replacing monthly monitoring with annual retrospective questioning.

Prospective monitoring and self-report of previous falls among older women at high risk of falls and fractures: a study of comparison and agreement

Background: The identification of the occurrence of falls is an important step for screening and for rehabilitation processes for the elderly. The methods of monitoring these events are susceptible to recording biases, and the choice of the most accurate method remains challenging. Objectives: (i) To investigate the agreement between retrospective self-reporting and prospective monitoring of methods of recording falls, and (ii) to compare the retrospective self-reporting of falls and the prospective monitoring of falls and recurrent falls over a 12-month period among older women at high risk of falls and fractures. Method: A total of 118 community-dwelling older women with low bone density were recruited. The incidence of falls was monitored prospectively in 116 older women (2 losses) via monthly phone calls over the course of a year. At the end of this monitoring period, the older women were asked about their recall of falls in the same 12-month period. The agreement between the two methods was analyzed, and the sensitivity and specificity of self-reported previous falls in relation to the prospective monitoring were calculated. Results: There was moderate agreement between the prospective monitoring and the retrospective self-reporting of falls in classifying fallers (Kappa=0.595) and recurrent fallers (Kappa=0.589). The limits of agreement were 0.35±1.66 falls. The self-reporting of prior falls had a 67.2% sensitivity and a 94.2% specificity in classifying fallers among older women and a 50% sensitivity and a 98.9% specificity in classifying recurrent fallers. Conclusion: Self-reporting of falls over a 12-month period underestimated 32.8% of falls and 50% of recurrent falls. The findings recommend caution if one is considering replacing monthly monitoring with annual retrospective questioning. .

Influence of dual task and frailty on gait parameters of older community-dwelling individuals.

BACKGROUND: Gait parameters such as gait speed (GS) are important indicators of functional capacity. Frailty Syndrome is closely related to GS and is also capable of predicting adverse outcomes. The cognitive demand of gait control is usually explored with dual-task (DT) methodology. OBJECTIVE: To investigate the effect of DT and frailty on the spatio-temporal parameters of gait in older people and identify which variables relate to GS. METHOD: The presence of frailty was verified by Fried's Frailty Criteria. Cognitive function was evaluated with the Mini-Mental State Exam (MMSE) and gait parameters were analyzed through the GAITRite(®) system in the single-task and DT conditions. The Kolmogorov-Smirnov, ANOVA, and Pearson's Correlation tests were administered. RESULTS: The participants were assigned to the groups frail (FG), pre-frail (PFG), and non-frail (NFG). During the DT, the three groups showed a decrease in GS, cadence, and stride length and an increase in stride time (p<0.001). The reduction in the GS of the FG during the DT showed a positive correlation with the MMSE scores (r=730; p=0.001) and with grip strength (r=681; p=0.001). CONCLUSIONS: Gait parameters are more affected by the DT, especially in the frail older subjects. The reduction in GS in the FG is associated with lower grip strength and lower scores in the MMSE. The GS was able to discriminate the older adults in the three levels of frailty, being an important measure of the functional capacity in this population.

Influence of dual task and frailty on gait parameters of older community-dwelling individuals

Background: Gait parameters such as gait speed (GS) are important indicators of functional capacity. Frailty Syndrome is closely related to GS and is also capable of predicting adverse outcomes. The cognitive demand of gait control is usually explored with dual-task (DT) methodology. Objective: To investigate the effect of DT and frailty on the spatio-temporal parameters of gait in older people and identify which variables relate to GS. Method: The presence of frailty was verified by Fried's Frailty Criteria. Cognitive function was evaluated with the Mini-Mental State Exam (MMSE) and gait parameters were analyzed through the GAITRite(r) system in the single-task and DT conditions. The Kolmogorov-Smirnov, ANOVA, and Pearson's Correlation tests were administered. Results: The participants were assigned to the groups frail (FG), pre-frail (PFG), and non-frail (NFG). During the DT, the three groups showed a decrease in GS, cadence, and stride length and an increase in stride time (p<0.001). The reduction in the GS of the FG during the DT showed a positive correlation with the MMSE scores (r=730; p=0.001) and with grip strength (r=681; p=0.001). Conclusions: Gait parameters are more affected by the DT, especially in the frail older subjects. The reduction in GS in the FG is associated with lower grip strength and lower scores in the MMSE. The GS was able to discriminate the older adults in the three levels of frailty, being an important measure of the functional capacity in this population. .

Coastline changes and sedimentation related with the opening of an artificial channel: the Valo Grande Delta, SE Brazil.

The role played by human activity in coastline changes indicates a general tendency of retreating coasts, especially deltaic environments, as a result of the recent trend of sea level rise as well as the blockage of the transfer of sediments towards the coast, especially due to the construction of dams. This is particularly important in deltaic environments which have been suffering a dramatic loss of area in the last decades. In contrast, in this paper, we report the origin and evolution of an anthropogenic delta, the Valo Grande delta, on the south-eastern Brazilian coast, whose origin is related to the opening of an artificial channel and the diversion of the main flow of the Ribeira de Iguape River. The methodology included the analysis of coastline changes, bathymetry and coring, which were used to determine the sedimentation rates and grain-size changes over time. The results allowed us to recognize the different facies of the anthropogenic delta and establish its lateral and vertical depositional trends. Despite not being very frequent, anthropogenic deltas represent a favorable environment for the record of natural and anthropogenic changes in historical times and, thus, deserve more attention from researchers of different subjects.

Influence of sarcopenia and functionality indicators on the frailty profile of community-dwelling elderly subjects: a cross-sectional study.

BACKGROUND: Frailty and sarcopenia are frequent conditions in the elderly and are related to inactivity and functionality. However, little is known about the influence of the sarcopenia indicators on the frailty profile or their functional implications. OBJECTIVE: To evaluate whether the indirect indicators of sarcopenia and functionality influence the frailty profile in elderly subjects. METHOD: This was a cross-sectional study with 53 elderly subjects recruited by an active search in a secondary health care service. The indirect indicators of sarcopenia were body mass index (BMI), gait speed, Mini-Nutritional Assessment (MNA), Human Activity Profile (HAP), and handgrip strength. Frailty was characterized according to Fried's Frailty Phenotype. Functional capacity was assessed according to the Short Physical Performance Battery (SPPB). Physical activity level was assessed by HAP. Data were analyzed by analysis of variance (ANOVA) and multiple regression. RESULTS: Overall, 75.5% of the subjects were women, with a mean age of 76.72 (±5.89) years; 15.1% were frail and 54.7% pre-frail; and the level of physical activity was the most prevalent indicator of sarcopenia. Significant differences (p<0.05) were observed in both the physical activity level and gait speed between the non-frail and pre-frail groups and between the non-frail and frail groups. In addition, some sarcopenia indicators were associated with functional capacity and geriatric depression score. CONCLUSION: The level of physical activity and gait speed appeared to be the most relevant factors in the development of frailty in the study sample, which may have functional implications.

Influence of sarcopenia and functionality indicators on the frailty profile of community-dwelling elderly subjects: a cross-sectional study

BACKGROUND: Frailty and sarcopenia are frequent conditions in the elderly and are related to inactivity and functionality. However, little is known about the influence of the sarcopenia indicators on the frailty profile or their functional implications. OBJECTIVE: To evaluate whether the indirect indicators of sarcopenia and functionality influence the frailty profile in elderly subjects. METHOD : This was a cross-sectional study with 53 elderly subjects recruited by an active search in a secondary health care service. The indirect indicators of sarcopenia were body mass index (BMI), gait speed, Mini-Nutritional Assessment (MNA), Human Activity Profile (HAP), and handgrip strength. Frailty was characterized according to Fried's Frailty Phenotype. Functional capacity was assessed according to the Short Physical Performance Battery (SPPB). Physical activity level was assessed by HAP. Data were analyzed by analysis of variance (ANOVA) and multiple regression. RESULTS: Overall, 75.5% of the subjects were women, with a mean age of 76.72 (±5.89) years; 15.1% were frail and 54.7% pre-frail; and the level of physical activity was the most prevalent indicator of sarcopenia. Significant differences (p<0.05) were observed in both the physical activity level and gait speed between the non-frail and pre-frail groups and between the non-frail and frail groups. In addition, some sarcopenia indicators were associated with functional capacity and geriatric depression score. CONCLUSION: The level of physical activity and gait speed appeared to be the most relevant factors in the development of frailty in the study sample, which may have functional implications. .

Força de preensão palmar em idosos com demência: estudo da confiabilidade / Handgrip strength in elderly with dementia: study of reliability

CONTEXTUALIZAÇÃO: Instrumentos de medida devem ser analisados quanto a sua utilidade clínica e científica em diferentes populações. Apesar de o teste da força de preensão palmar (FPP) ser amplamente utilizado, pouco foi investigado quanto a sua confiabilidade ao ser utilizado em idosos com demência e em qual grau de demência seria inviabilizado o seu uso. OBJETIVO: Avaliar a confiabilidade teste-reteste da FPP em idosos com diferentes graus de demência. MÉTODO: Realizou-se uma avaliação dos aspectos cognitivos de 76 idosos com demência e uma entrevista com o cuidador, permitindo a classificação do idoso segundo os critérios da Escala Clínica de Demência (Clinical dementia rating - CDR). Para essas avaliações, foram utilizados o Miniexame do Estado Mental e os questionários Pfeffer, Lawton e Katz. Vinte idosos foram classificados como grau questionável (83,4±5,8 anos); 19, como leve (82,4±6,8 anos); 19, como moderado (85,8±5,6 anos) e 18, como grave (84,0±5,1 anos). Os idosos tiveram a FPP avaliada por meio de um dinamômetro hidráulico JAMAR e, após uma semana, foram reavaliados. A confiabilidade foi estimada pelo Coeficiente de Correlação Intraclasse (ICC). O nível de significância foi α=0,05. RESULTADOS: A confiabilidade teste-reteste foi excelente para os grupos que apresentaram o CDR questionável (ICC=0,975; p=0,001), leve (ICC=0,968; p=0,002) e moderado (ICC=0,964; p=0,001). A análise do grupo com CDR grave mostrou não haver uma significância estatística e um ICC baixo (ICC=0,415; p=0,376). CONCLUSÃO: O teste de FPP apresenta excelente confiabilidade ao ser utilizado em idosos com demências questionável, leve e moderada, viabilizando seu uso em pesquisas. Já em idosos classificados como graves, seu uso não é recomendado visto que a confiabilidade da medida é baixa e, portanto, sem relevância clínica para uso na prática.

BACKGROUND: Measuring instruments should have their scientific and clinical value evaluated in different populations. The handgrip strength test is widely used, however little has been investigated about its reliability when used in elderly with dementia and the right stage wich its use should be avoided. OBJECTIVES: To evaluate the test-retest reliability of the handgrip strength test in elderly with different ratings of dementia. METHOD: The cognitive function of 76 elderly subjects with dementia was measured, and the caregivers were interviewed to allow classification by the Clinical dementia rating (CDR). For these assessments the Mini-Metal State Examination and the Pfeffer, Lawton, and Katz scales were used. Twenty subjects were classified as borderline (83.4± 5.8 years), 19 as mild (82.4±6.8 years), 19 as moderate (85.8±5.6 years) and 18 as severe dementia (84.0±5.1 years). Handgrip strength was assessed with a JAMAR hydraulic dynamometer and after one week it was reevaluated. Reliability was analyzed by Intraclass Correlation Coefficient (ICC). The significance level was set at α=0.05. RESULTS: Test-retest reliability was excellent for groups with borderline (ICC=0.975; p=0.001), mild (ICC=0.968; p=0.002), and moderate (ICC=0.964; p=0.001) dementia. The analysis of the group with a severe CDR showed no statistical significance and a low ICC (ICC=0.415; p=0.376). CONCLUSION: The handgrip strength test has excellent reliability when used in elderly with borderline, mild, and moderate dementia, which enables its use in research. However, its use is not recommended in elderly classified with severe dementia due to the measure’s low reliability and subsequent irrelevance in clinical practice.

Handgrip strength in elderly with dementia: study of reliability.

BACKGROUND: Measuring instruments should have their scientific and clinical value evaluated in different populations. The handgrip strength test is widely used, however little has been investigated about its reliability when used in elderly with dementia and the right stage wich its use should be avoided. OBJECTIVES: To evaluate the test-retest reliability of the handgrip strength test in elderly with different ratings of dementia. METHOD: The cognitive function of 76 elderly subjects with dementia was measured, and the caregivers were interviewed to allow classification by the Clinical dementia rating (CDR). For these assessments the Mini-Metal State Examination and the Pfeffer, Lawton, and Katz scales were used. Twenty subjects were classified as borderline (83.4±5.8 years), 19 as mild (82.4±6.8 years), 19 as moderate (85.8±5.6 years) and 18 as severe dementia (84.0±5.1 years). Handgrip strength was assessed with a JAMAR hydraulic dynamometer and after one week it was reevaluated. Reliability was analyzed by Intraclass Correlation Coefficient (ICC). The significance level was set at α=0.05. RESULTS: Test-retest reliability was excellent for groups with borderline (ICC=0.975; p=0.001), mild (ICC=0.968; p=0.002), and moderate (ICC=0.964; p=0.001) dementia. The analysis of the group with a severe CDR showed no statistical significance and a low ICC (ICC=0.415; p=0.376). CONCLUSION: The handgrip strength test has excellent reliability when used in elderly with borderline, mild, and moderate dementia, which enables its use in research. However, its use is not recommended in elderly classified with severe dementia due to the measure's low reliability and subsequent irrelevance in clinical practice.

Characteristics associated with activity restriction induced by fear of falling in community-dwelling elderly.

OBJECTIVES: The aim of this study was to determine the social-demographic, clinical, functional and psychological factors associated to activity restriction due to fear of falling in community-dwelling elderly and identify which variables best discriminate groups of elderly with different levels of activity restriction and fear of falling. METHODS: One hundred and thirteen community-dwelling elderly (74.5±7 years old) participated in the study. Activity restriction induced by fear of falling, previous falls, fall related self-efficacy, frailty phenotype, functional capacity, depressive symptoms, health self-perception, socio-demographic and clinical factors were assessed. Descriptive statistics, chi-square, ANOVA and Kruskal Wallis tests were used to analyze the associations between activity restriction due to fear of falling and all other variables. Path analysis (CHAID) method was used to verify which variables better discriminated groups in relation to activity restriction (α=0.05). RESULTS: The participants who reported fear of falling and activity restriction demonstrated higher depression (p=0.038), lower fall related self-efficacy (p<0.001), lower gait velocity (p=0.043) and independence level for instrumental daily living activities (p=0.017), higher number of diseases (p=0.048), worse health self-perception (p=0.040) and more depressive symptom (p=0.023). The best variables to discriminate groups were depression (p=0.004), exhaustion (frailty phenotype) (p=0.010) and social participation activities (p=0.016). CONCLUSION: Activity restriction due to fear of falling may have negative effects on functional capacity and psychological aspects in community-dwelling elderly. Psychosocial factors seem to better discriminate the elderly who avoid activities due to fear of falling.

Characteristics associated with activity restriction induced by fear of falling in community-dwelling elderly / Características associadas à restrição de atividades por medo de cair em idosos comunitários

OBJECTIVES: The aim of this study was to determine the social-demographic, clinical, functional and psychological factors associated to activity restriction due to fear of falling in community-dwelling elderly and identify which variables best discriminate groups of elderly with different levels of activity restriction and fear of falling. METHODS: One hundred and thirteen community-dwelling elderly (74.5±7 years old) participated in the study. Activity restriction induced by fear of falling, previous falls, fall related self-efficacy, frailty phenotype, functional capacity, depressive symptoms, health self-perception, socio-demographic and clinical factors were assessed. Descriptive statistics, chi-square, ANOVA and Kruskal Wallis tests were used to analyze the associations between activity restriction due to fear of falling and all other variables. Path analysis (CHAID) method was used to verify which variables better discriminated groups in relation to activity restriction (α=0.05). RESULTS: The participants who reported fear of falling and activity restriction demonstrated higher depression (p=0.038), lower fall related self-efficacy (p<0.001), lower gait velocity (p=0.043) and independence level for instrumental daily living activities (p=0.017), higher number of diseases (p=0.048), worse health self-perception (p=0.040) and more depressive symptom (p=0.023). The best variables to discriminate groups were depression (p=0.004), exhaustion (frailty phenotype) (p=0.010) and social participation activities (p=0.016). CONCLUSION: Activity restriction due to fear of falling may have negative effects on functional capacity and psychological aspects in community-dwelling elderly. Psychosocial factors seem to better discriminate the elderly who avoid activities due to fear of falling.

OBJETIVOS: Determinar os fatores sociodemograficos, clinicos, funcionais e psicologicos associados a restricao de atividades por medo de cair em idosos comunitarios e identificar quais variaveis melhor discriminam os grupos em relacao a restricao de atividades por medo de cair. MÉTODOS: Cento e treze idosos comunitarios (74,5±7 anos) participaram do estudo. Foram avaliados: restricao de atividades por medo de cair, historia de quedas, autoeficacia relacionada as quedas, fenotipo de fragilidade, aspectos sociodemograficos e clinicos, capacidade funcional, depressao e autopercepcao de saude. Estatisticas descritivas, teste qui-quadrado, ANOVA e o teste Kruskal-Wallis foram utilizados para analisar as relacoes entre a restricao de atividades por medo de cair e as outras variaveis. O metodo Chi-Square Automatic Interaction Detection (CHAID) foi utilizado para verificar quais variaveis melhor discriminavam os grupos em relacao a restricao de atividades (α=0,05). RESULTADOS: Idosos que relataram restricao de atividades por medo de cair apresentaram maior autorrelato de depressao (p=0,038), menor autoeficacia em relacao as quedas (p<0,001), menor velocidade de marcha (p=0,043) e nivel de independencia para realizacao de atividades instrumentais de vida diaria (p=0,017), maior numero de doencas (p=0,048), pior autopercepcao de saude (p=0,040) e maior presenca de sintomatologia depressiva (p=0,023). As variaveis que melhor discriminaram os grupos foram depressao (p=0,004), exaustao (fenotipo de fragilidade) (p=0,010) e participacao em atividades sociais (p=0,016). CONCLUSÃO: A restricao de atividades por medo de cair pode ter efeitos negativos na capacidade funcional e nos aspectos psicologicos de idosos comunitarios. Fatores psicossociais parecem discriminar melhor os idosos que apresentam restricao de atividades por medo de cair.

Clinical, functional and inflammatory factors associated with muscle fatigue and self-perceived fatigue in elderly community-dwelling women.

BACKGROUND: Fatigue is a common and nonspecific symptom associated with chronic health problems in the elderly. The modifications and adaptations of the aging process associated with complex and multidimensional nature of fatigue favors the interaction of multiple factors in the genesis of this phenomenon. OBJECTIVES: To investigate the association of clinical, functional and inflammatory factors with muscle fatigue and self perceived fatigue in elderly women. METHODS: Participated in the study one hundred and thirty five community elderly women, all sedentary, with a mean age of 71.2±4.57. A structured questionnaire and functional testing were used to evaluate clinical and functional characteristics. Plasma concentrations of inflammatory mediators (IL-6 and sTNFR1) were measured by ELISA method. Muscle fatigue was measured by isokinetic dynamometer and self-perceived fatigue was measured by a visual analog scale. Statistical analysis was performed by multiple linear regression and Spearman correlation coefficient with statistical significance of 5%. RESULTS: The regression models showed that the variables age, body mass index, physical activity level, functional capacity and peak torque were associated with muscle fatigue (R²=0.216, p<0.01). Self-perceived fatigue was associated with number of comorbidities, depression, physical activity level, functional capacity, peak torque and perceived health (R²=0.227, p<0.01). CONCLUSION: This study showed a psychophysical interaction of the fatigue, by identifying the main factors associated with muscle fatigue and self-perceived fatigue in elderly women. These findings demonstrate the importance of evaluation and treatment of modifiable factors in both muscle fatigue and self-perceived fatigue, seeking a better physical and functional performance of elders.

Total hip arthroplasty in the elderly: impact on functional performance.

OBJECTIVES: To compare gait and functional performance parameters in elderly subjects who had or had not total hip arthroplasty (THA). METHODS: Our sample comprised 23 elderly subjects (72±6.5 years of age) with a mean of 2.6±1.3 years following THA, named the arthroplasty group (AG) and 23 asymptomatic elderly subjects (70.1±5.9 years of age), named the control group (CG). Case and control subjects were paired by gender, age, body mass index and level of physical activity. The GAITRite® system was used to analyze various gait parameters in four situations: usual speed (US), fast speed (FS), slow speed (SS) and dual task (DT); the Dynamic Gait Index (DGI) and Timed Up and Go test (TUG) methods were used to evaluate functional capacity. The statistical analyses were carried out using the Shapiro-Wilk test, Student's-t-tests for independent samples, chi-square tests, ANOVA for repeated measurements and paired Student's-t-tests. RESULTS: The AG had the worst results for gait speed (AG=1.18±0.13 and CG=1.39±0.09; p=0.012), symmetry index (SI) of step length (AG=3.60±1.01 and CG=1.12±0.59; p=0.000), SI of step time (AG=-2.65±0.92 and CG=0.99±0.74; p=0.000), SI of stance phase (AG=-2.55 and CG=-1.04±0.50; p=0.005), SI of single support phase (AG=-2.17±0.78 and CG=1.21±0.51; p=0.003), DGI (AG=20.04±1.91 and CG=21.69±1.45; p=0.001) and TUG (AG=14.67±1.94 and CG=10.08±1.49; p=0.001). CONCLUSION: Elderly subjects with a history of THA had changes in gait parameters and lower performance in TUG test even 2.6±1,3 years after surgery, which suggests functional impairment.