Validity and usefulness of hand-held dynamometry for measuring muscle strength in community-dwelling older persons.

The aim was to determine the validity and usefulness of hand-held dynamometry for measuring muscle strength in independent community-dwelling older persons. Cross-sectional study was performed in 281 subjects aged over 65, mean age of 74.3 years. The strength of six muscle groups was measured in three consecutive attempts using JAMAR hand-held dynamometers. Individual values, maximums and means, intra- and inter-individual variability, test-retest reliability and concurrent validity with functional tests are described. The main results were: strength increased with each attempt for all muscle groups, suggesting technique learning, except for pinch and grip, suggesting muscle fatigability. Relative intra- and inter-individual variability was higher in women; it was lower for the pinch and grip strength. Test-retest reliability was very good and concurrent validity with functional tests was good. We conclude that hand-held dynamometry is valid and useful for determining functionality. It is recommended to perform three attempts for all strength measurements, except for pinch and grip, in which one is sufficient.

Cardiovascular risk factors are associated with subclinical atherosclerosis in high functioning older adults.

BACKGROUND: The prevalence of subclinical atherosclerosis and its relationship with cardiovascular risk factors (CVRFs) is not well known in high functioning older adults. These data can help to decide if the implementation of preventive measures is necessary in this population. OBJECTIVE: To determine the prevalence and progression of subclinical atherosclerosis in high functioning older adults, the relationship between subclinical atherosclerosis and CVRFs, and the influence of the CVRFs on subclinical atherosclerosis progression. METHODS: Longitudinal cohort study. 246 high functioning older adults without clinical atherosclerotic disease. All subjects underwent carotid Doppler ultrasound at entry and 176 at 24 months. RESULTS: Plaque was observed in 146 (59.3%) subjects at baseline. CVRFs showed a linear relationship to the presence of plaque: plaque was observed in 32% of subjects with no CVRFs, 54.2% with 1 factor, 61.6% with 2 factors, and 69.3% with 3 or more (p=.001). Only hypertension was independently associated with the presence of plaque (OR 2.0; 95% CI 1.2-3.6; p=.013), adjusted for CVRFs. At 24 months, new plaque was observed in 20 (11.4%) subjects and carotid intima-media thickness had increased 0.02 mm per year. Subjects with plaque at baseline had a higher risk of greater total carotid plaque diameter at 2 years (OR 58.0; 95% CI, 19.7-170.5; p<.001), adjusted for all other CVRFs. CONCLUSIONS: Subclinical atherosclerosis is common in high functioning older adults and is associated with the classic CVRFs. Controlling these factors could be helpful in reducing atherosclerosis in older patients.

Síntomas psicológicos y conductuales en deterioro cognitivo leve y enfermedad de Alzheimer / Neuropsychiatric symptoms in mild cognitive impairment and Alzheimer's disease

IntroducciónAnalizar la distribución de los síntomas psicológicos y conductuales de la demencia (SPCD) en mayores con enfermedad de Alzheimer (EA) y deterioro cognitivo leve (DCL) y su utilidad en el diagnóstico diferencial de ambas entidades.Material y métodosCiento setenta y nueve mayores de 64 años diagnosticados de DCL (n = 90) o EA (n = 89), estadio de la Global Deterioration Scale 4 o 5. Se determinaron los SPCD con la escala Neuropsychiatric Inventory. Se describe la prevalencia de los síntomas en cada grupo y se determina el riesgo que supone el presentar cada uno de los SPCD para que un paciente sea diagnosticado de EA en lugar de DCL.ResultadosSesenta y siete pacientes con DCL (74,4%) y 82 con EA (92,1%) presentaron algún SPCD (p<0,01) siendo los más prevalentes la depresión y la apatía en ambos grupos. La media de SPCD fue de 2,1 en los DCL y de 3,2 en los EA y fueron más frecuentes en pacientes con mayores lesiones isquémicas de sustancia blanca (LISB) (p<0,05). La presencia de algún SPCD aumentó el riesgo de que los pacientes fueran diagnosticados de EA en lugar de DCL (odds ratio [OR] de 3,6; intervalo de confianza [IC] del 95%: 1,4–5,7; p<0,01) tras ajustar por edad, sexo, Mini-Mental State Examination y LISB. Los SPCD asociados independientemente al diagnóstico de EA fueron los delirios (OR de 4,9; IC del 95%: 1,3–18,6; p<0,05), la apatía (OR de 2,5; IC del 95%: 1,3–4,7; p<0,01), la desinhibición (OR de 3,1; IC del 95%: 1,5–6,4; p<0,01) y las conductas motoras sin finalidad (OR de 6,3; IC del 95%: 1,7–23,4; p<0,01).ConclusionesLos SPCD son frecuentes en mayores con DCL y EA leve-moderada y pueden ayudar a diferenciar entre estas dos patologías(AU)

Material and methodsA total of 179 subjects, aged more than 64 years old, with either MCI (n=90) or AD (n=89) and Global Deterioration Scale stage 4-5 were studied. NPS were assessed using the Neuropsychiatric Inventory scale. We identified the prevalence of the symptoms in each group and determined the risk conferred by each symptom to the differential diagnosis between the two entities.ResultsSixty-seven patients with MCI (74.4%) and 82 with AD (92.1%) showed at least one NPS (p<0.01), the most prevalent being depression and apathy in both groups. The mean number of NPS was 2.1 in MCI and 3.2 in AD. NPS were more frequent in patients with more white matter ischemic lesions (WMIL) (p<0.05). The presence of at least one NPS increased the risk of being diagnosed with AD rather than MCI (odds ratio [OR] 3.6: 95% confidence interval [CI] 1.4–5.7; p<0.01) adjusted by age, sex, Mini-Mental State Examination and WMIL. The NPS independently associated with a diagnosis of AD were delusions (OR 4.9; 95% CI 1.3–18.6; p<0.05), apathy (OR 2.5; 95% CI 1.3–4.7 p<0.01), disinhibition (OR 3.1; 95% CI 1.5–6.4; p<0.01) and aberrant motor behavior (OR 6.3; 95% CI 1.7–23.4; p<0.01).ConclusionsNPS are frequent in elderly individuals with MCI and mild-moderate AD and may help to differentiate between these two entities(AU9

Síntomas psicológicos y conductuales en deterioro cognitivo leve y enfermedad de Alzheimer / Neuropsychiatric symptoms in mild cognitive impairment and Alzheimer's disease

IntroducciónAnalizar la distribución de los síntomas psicológicos y conductuales de la demencia (SPCD) en mayores con enfermedad de Alzheimer (EA) y deterioro cognitivo leve (DCL) y su utilidad en el diagnóstico diferencial de ambas entidades.Material y métodosCiento setenta y nueve mayores de 64 años diagnosticados de DCL (n = 90) o EA (n = 89), estadio de la Global Deterioration Scale 4 o 5. Se determinaron los SPCD con la escala Neuropsychiatric Inventory. Se describe la prevalencia de los síntomas en cada grupo y se determina el riesgo que supone el presentar cada uno de los SPCD para que un paciente sea diagnosticado de EA en lugar de DCL.ResultadosSesenta y siete pacientes con DCL (74,4%) y 82 con EA (92,1%) presentaron algún SPCD (p<0,01) siendo los más prevalentes la depresión y la apatía en ambos grupos. La media de SPCD fue de 2,1 en los DCL y de 3,2 en los EA y fueron más frecuentes en pacientes con mayores lesiones isquémicas de sustancia blanca (LISB) (p<0,05). La presencia de algún SPCD aumentó el riesgo de que los pacientes fueran diagnosticados de EA en lugar de DCL (odds ratio [OR] de 3,6; intervalo de confianza [IC] del 95%: 1,4–5,7; p<0,01) tras ajustar por edad, sexo, Mini-Mental State Examination y LISB. Los SPCD asociados independientemente al diagnóstico de EA fueron los delirios (OR de 4,9; IC del 95%: 1,3–18,6; p<0,05), la apatía (OR de 2,5; IC del 95%: 1,3–4,7; p<0,01), la desinhibición (OR de 3,1; IC del 95%: 1,5–6,4; p<0,01) y las conductas motoras sin finalidad (OR de 6,3; IC del 95%: 1,7–23,4; p<0,01).ConclusionesLos SPCD son frecuentes en mayores con DCL y EA leve-moderada y pueden ayudar a diferenciar entre estas dos patologías(AU)

Material and methodsA total of 179 subjects, aged more than 64 years old, with either MCI (n=90) or AD (n=89) and Global Deterioration Scale stage 4-5 were studied. NPS were assessed using the Neuropsychiatric Inventory scale. We identified the prevalence of the symptoms in each group and determined the risk conferred by each symptom to the differential diagnosis between the two entities.ResultsSixty-seven patients with MCI (74.4%) and 82 with AD (92.1%) showed at least one NPS (p<0.01), the most prevalent being depression and apathy in both groups. The mean number of NPS was 2.1 in MCI and 3.2 in AD. NPS were more frequent in patients with more white matter ischemic lesions (WMIL) (p<0.05). The presence of at least one NPS increased the risk of being diagnosed with AD rather than MCI (odds ratio [OR] 3.6: 95% confidence interval [CI] 1.4–5.7; p<0.01) adjusted by age, sex, Mini-Mental State Examination and WMIL. The NPS independently associated with a diagnosis of AD were delusions (OR 4.9; 95% CI 1.3–18.6; p<0.05), apathy (OR 2.5; 95% CI 1.3–4.7 p<0.01), disinhibition (OR 3.1; 95% CI 1.5–6.4; p<0.01) and aberrant motor behavior (OR 6.3; 95% CI 1.7–23.4; p<0.01).ConclusionsNPS are frequent in elderly individuals with MCI and mild-moderate AD and may help to differentiate between these two entities(AU)

[Neuropsychiatric symptoms in mild cognitive impairment and Alzheimer's disease]. / Síntomas psicológicos y conductuales en deterioro cognitivo leve y enfermedad de Alzheimer.

INTRODUCTION: To describe the neuropsychiatric symptoms (NPS) in elderly patients with either mild cognitive impairment (MCI) or Alzheimer's disease (AD) and their relevance in the differential diagnosis between the two entities. MATERIAL AND METHODS: A total of 179 subjects, aged more than 64 years old, with either MCI (n=90) or AD (n=89) and Global Deterioration Scale stage 4-5 were studied. NPS were assessed using the Neuropsychiatric Inventory scale. We identified the prevalence of the symptoms in each group and determined the risk conferred by each symptom to the differential diagnosis between the two entities. RESULTS: Sixty-seven patients with MCI (74.4%) and 82 with AD (92.1%) showed at least one NPS (p<0.01), the most prevalent being depression and apathy in both groups. The mean number of NPS was 2.1 in MCI and 3.2 in AD. NPS were more frequent in patients with more white matter ischemic lesions (WMIL) (p<0.05). The presence of at least one NPS increased the risk of being diagnosed with AD rather than MCI (odds ratio [OR] 3.6: 95% confidence interval [CI] 1.4-5.7; p<0.01) adjusted by age, sex, Mini-Mental State Examination and WMIL. The NPS independently associated with a diagnosis of AD were delusions (OR 4.9; 95% CI 1.3-18.6; p<0.05), apathy (OR 2.5; 95% CI 1.3-4.7 p<0.01), disinhibition (OR 3.1; 95% CI 1.5-6.4; p<0.01) and aberrant motor behavior (OR 6.3; 95% CI 1.7-23.4; p<0.01). CONCLUSIONS: NPS are frequent in elderly individuals with MCI and mild-moderate AD and may help to differentiate between these two entities.