Anne B Newman

University of Pittsburgh, Pittsburgh, Pennsylvania, United States

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Publications (632)3922.26 Total impact


  • No preview · Conference Paper · Apr 2015
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    ABSTRACT: The objective of this study is to examine the relationship of serum carboxymethyl-lysine (CML), an advanced glycation end product (AGE), with pulse pressure (PP), aortic pulse wave velocity (aPWV) and hypertension in older adults. AGEs are bioactive molecules that accumulate in tissues with ageing and can both cross-link collagen and induce inflammation in model systems. The relationship of AGEs with arterial stiffness and hypertension has not been well characterized in community-dwelling older adults. We measured serum CML and blood pressure in 3044 adults, aged 70-79 years, who participated in the Health, Aging and Body Composition Study, a population-based study of ageing in Pittsburgh, Pennsylvania and Memphis, Tennessee. aPWV was measured in 2468 participants. Participants in the highest tertile of serum CML had higher PP (highest tertile: beta = 2.85, SE = 0.82, P = 0.0005; middle tertile: beta = 0.60, SE = 0.80, P = 0.45), and higher aPWV (highest tertile: beta = 51.4, SE = 20.1, P = 0.01; middle tertile: beta = 3.2, SE = 19.8, P = 0.87) than those in the lowest tertile in multivariable linear regression models adjusting for age, sex, race, education, BMI, smoking, alcohol use, total cholesterol, high-density lipoprotein (HDL) cholesterol, diabetes, cardiovascular disease and chronic kidney disease. Participants in the highest and middle tertiles of serum CML had higher odds of hypertension [odds ratio (OR) 1.32, 95% confidence interval (95% CI) 1.06-1.60, P = 0.005; OR 1.27, 95% CI 1.05-1.53, P = 0.01, respectively] than those in the lowest tertile in a multivariable logistic regression model adjusting for the same covariates. Elevated serum CML was associated with arterial stiffness, as reflected by higher PP and aPWV, in older, community-dwelling adults.
    No preview · Article · Apr 2015 · Journal of Hypertension
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    ABSTRACT: Identifying plaque composition using ultrasound may aid in stratifying patients at high risk for cardiovascular disease (CVD). Calcification is an integral part of plaque progression and may contribute to plaque vulnerability. We investigated the ability of calcified carotid plaques identified using carotid ultrasound to predict cardiovascular outcomes in older adults. Participants included 187 hypertensive and 187 normotensive adults undergoing a duplex scan to identify the presence of calcified carotid plaques. Hypertensive participants received either blood pressure treatment or placebo, and all participants were followed for incident cardiovascular events and death for a maximum of 11 years. The untreated hypertensive group was significantly associated with a higher time-to-any CVD event [relative risk (RR) 2.97, 95% confidence interval (CI) 2.03-4.35, P < 0.0001] and mortality (RR 3.11, 95% CI 1.92-5.04, P < 0.0001) when compared to the normotensive group. Participants with calcified carotid plaques had higher cardiovascular event rates (RR 6.22, 95% CI 1.97-19.6, P = 0.0018) and mortality (RR 6.30, 95% CI 1.55-25.7, P = 0.010) when compared to those without plaque. After controlling for age, male sex, blood pressure status, glucose, and IMT, the presence of calcified carotid plaques remained predictive of CVD events (RR 2.35, 95% CI 1.5-3.8, P = 0.0005) and mortality (RR 2.72, 95% CI 1.4-5.2, P = 0.0021). Calcified carotid plaques may predict mortality and cardiovascular outcomes independent of traditional CVD risk factors and may serve as an additional CVD risk assessment in the elderly.
    No preview · Article · Apr 2015 · Journal of Hypertension
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    ABSTRACT: The Healthy Aging Index (HAI) is a tool for measuring the extent of health and disease across multiple systems. We conducted a genome-wide association study and a genome-wide linkage analysis to map quantitative trait loci associated with the HAI and a modified HAI weighted for mortality risk in 3,140 individuals selected for familial longevity from the Long Life Family Study. The genome-wide association study used the Long Life Family Study as the discovery cohort and individuals from the Cardiovascular Health Study and the Framingham Heart Study as replication cohorts. There were no genome-wide significant findings from the genome-wide association study; however, several single-nucleotide polymorphisms near ZNF704 on chromosome 8q21.13 were suggestively associated with the HAI in the Long Life Family Study (p < 10(-) (6)) and nominally replicated in the Cardiovascular Health Study and Framingham Heart Study. Linkage results revealed significant evidence (log-odds score = 3.36) for a quantitative trait locus for mortality-optimized HAI in women on chromosome 9p24-p23. However, results of fine-mapping studies did not implicate any specific candidate genes within this region of interest. ZNF704 may be a potential candidate gene for studies of the genetic underpinnings of longevity. © The Author 2015. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
    No preview · Article · Mar 2015 · The Journals of Gerontology Series A Biological Sciences and Medical Sciences

  • No preview · Article · Mar 2015 · Journal of the American Geriatrics Society
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    ABSTRACT: The assessment of mobility is essential to both aging research and clinical geriatric practice. A newly developed self-report measure of mobility, the mobility assessment tool-short form (MAT-sf), uses video animations as an innovative method to improve measurement accuracy/precision. The primary aim of the current study was to evaluate whether MAT-sf scores can be used to identify risk for major mobility disability (MMD). This article is based on data collected from the Lifestyle Interventions and Independence for Elders study and involved 1,574 older adults between the ages of 70-89. The MAT-sf was administered at baseline; MMD, operationalized as failure to complete the 400-m walk ≤ 15 minutes, was evaluated at 6-month intervals across a period of 42 months. The outcome of interest was the first occurrence of MMD or incident MMD. After controlling for age, sex, clinic site, and treatment arm, baseline MAT-sf scores were found to be effective in identifying risk for MMD (p < .0001). Partitioning the MAT-sf into four groups revealed that persons with scores <40, 40-49, 50-59, and 60+ had failure rates across 42 months of follow-up of 66%, 52%, 35%, and 22%, respectively. The MAT-sf is a quick and efficient way of identifying older adults at risk for MMD. It could be used to clinically identify older adults that are in need of intervention for MMD and provides a simple means for monitoring the status of patients' mobility, an important dimension of functional health. © The Author 2015. Published by Oxford University Press on behalf of The Gerontological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
    Full-text · Article · Feb 2015 · The Journals of Gerontology Series A Biological Sciences and Medical Sciences
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    ABSTRACT: Context: Higher dietary net acid loads have been associated with increased bone resorption, reduced bone mineral density (BMD), and increased fracture risk. Objective: To compare bicarbonate (HCO3) measured in arterialized venous blood samples to skeletal outcomes. Design: Arterialized venous samples collected from participants in the Health, Aging and Body Composition (Health ABC) Study were compared to BMD and rate of bone loss. Setting: Community based observational cohort Participants: 2287 men and women age 74 ± 3. Intervention: Arterialized venous blood was obtained at the year 3 study visit and analyzed for pH and pCO2. HCO3 was determined using the Henderson-Hasselbalch equation. Main Outcome Measure: BMD measured at the hip by DXA at the year 1 (baseline) and year 3 study visits. Results: Plasma HCO3 was positively associated with BMD at both year 1 (p=0.001) and year 3 (p=0.001) in models adjusted for age, race, sex, clinic site, smoking, weight, and estimated glomerular filtration rate. Plasma HCO3 was inversely associated with rate of bone loss at the total hip over the 2.1 ± 0.3 (mean ± SD) years between the two bone density measurements (p<0.001). Across quartiles of plasma HCO3, the rate of change in BMD over the 2.1 years ranged from a loss of 0.72%/year in the lowest quartile to a gain of 0.15%/year in the highest quartile of HCO3. Conclusions: Arterialized plasma HCO3 was associated positively with cross-sectional BMD and inversely with the rate of bone loss, implying that systemic acid-base status is an important determinant of skeletal health during aging. Ongoing bone loss was linearly related to arterialized HCO3 even after adjustment for age and renal function. Further research in this area may have major public health implications, as reducing dietary net acid load is possible through dietary intervention or through supplementation with alkaline potassium compounds.
    Preview · Article · Feb 2015 · Journal of Clinical Endocrinology & Metabolism
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    ABSTRACT: The neuroprotective effects of physical activity (PA) are consistently shown in older adults, but the neural substrates, particularly in white matter (WM), are understudied, especially in very old adults with the fastest growth rate and the highest risk of dementia. This study quantified the association between PA and WM integrity in adults over 80. The moderating effects of cardiometabolic conditions, physical functional limitations and WM hyperintensities were also examined, as they can affect PA and brain integrity. Fractional anisotropy (FA) from normal-appearing WM via diffusion tensor imaging and WM hyperintensities were obtained in 90 participants (mean age = 87.4, 51.1% female, 55.6% white) with concurrent objective measures of steps, active energy expenditure (AEE in kcal), duration (min), and intensity (metabolic equivalents, METs) via SenseWear Armband. Clinical adjudication of cognitive status, prevalence of stroke and diabetes, systolic blood pressure, and gait speed were assessed at time of neuroimaging. Participants were on average sedentary (mean ± SD/day: 1766 ± 1345 steps, 202 ± 311 kcal, 211 ± 39 min, 1.8 ± 1.1 METs). Higher steps, AEE and duration, but not intensity, were significantly associated with higher FA. Associations were localized in frontal and temporal areas. Moderating effects of cardiometabolic conditions, physical functional limitations, and WM hyperintensities were not significant. Neither FA nor PA was related to cognitive status. Older adults with a sedentary lifestyle and a wide range of cardiometabolic conditions and physical functional limitations, displayed higher WM integrity in relation to higher PA. Studies of very old adults to quantify the role of PA in reducing dementia burden via WM integrity are warranted.
    Full-text · Article · Feb 2015 · Behavioural Brain Research
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    ABSTRACT: Additional information is needed about the role of dietary sodium on health outcomes in older adults. To examine the association between dietary sodium intake and mortality, incident cardiovascular disease (CVD), and incident heart failure (HF) in older adults. We analyzed 10-year follow-up data from 2642 older adults (age range, 71-80 years) participating in a community-based, prospective cohort study (inception between April 1, 1997, and July 31, 1998). Dietary sodium intake at baseline was assessed by a food frequency questionnaire. We examined sodium intake as a continuous variable and as a categorical variable at the following levels: less than 1500 mg/d (291 participants [11.0%]), 1500 to 2300 mg/d (779 participants [29.5%]), and greater than 2300 mg/d (1572 participants [59.5%]). Adjudicated death, incident CVD, and incident HF during 10 follow-up years. Analysis of incident CVD was restricted to 1981 participants without prevalent CVD at baseline. The mean (SD) age of participants was 73.6 (2.9) years, 51.2% were female, 61.7% were of white race, and 38.3% were black. After 10 years, 881 participants had died, 572 had developed CVD, and 398 had developed HF. In adjusted Cox proportional hazards regression models, sodium intake was not associated with mortality (hazard ratio [HR] per 1 g, 1.03; 95% CI, 0.98-1.09; P = .27). Ten-year mortality was nonsignificantly lower in the group receiving 1500 to 2300 mg/d (30.7%) than in the group receiving less than 1500 mg/d (33.8%) and the group receiving greater than 2300 mg/d (35.2%) (P = .07). Sodium intake of greater than 2300 mg/d was associated with nonsignificantly higher mortality in adjusted models (HR vs 1500-2300 mg/d, 1.15; 95% CI, 0.99-1.35; P = .07). Indexing sodium intake for caloric intake and body mass index did not materially affect the results. Adjusted HRs for mortality were 1.20 (95% CI, 0.93-1.54; P = .16) per milligram per kilocalorie and 1.11 (95% CI, 0.96-1.28; P = .17) per 100 mg/kg/m2 of daily sodium intake. In adjusted models accounting for the competing risk for death, sodium intake was not associated with risk for CVD (subHR per 1 g, 1.03; 95% CI, 0.95-1.11; P = .47) or HF (subHR per 1 g, 1.00; 95% CI, 0.92-1.08; P = .92). No consistent interactions with sex, race, or hypertensive status were observed for any outcome. In older adults, food frequency questionnaire-assessed sodium intake was not associated with 10-year mortality, incident CVD, or incident HF, and consuming greater than 2300 mg/d of sodium was associated with nonsignificantly higher mortality in adjusted models.
    No preview · Article · Jan 2015 · JAMA Internal Medicine
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    ABSTRACT: Introduction: We examined whether statins are associated with better cerebral white (WM) and gray matter (GM) indices in community-dwelling elders. Methods: In 295 older adults, we compared white matter hyperintensities (WMH) on brain magnetic resonance imaging and, total WM fractional anisotropy (FA) and GM mean diffusivity (MD) on diffusion tensor imaging, of Alzheimer's disease (AD) relevant regions in statin-exposed and statin-unexposed participants stratified by Modified Mini-Mental Status Examination (3MS) score. Results: There was no overall effect of statin exposure on cerebral structural indices. The interaction between statin exposure and 3MS was significant for total-WMH and WM FA (both P < .05) but not GM MD. In the lowest 3MS tertile (mean: 86), statin-exposed individuals had lower total-WMH and higher WM FA (P = .005 and P = .044) and FA of tracts linked to clinical AD (P-value range= .005-.04) despite statistical adjustments. These differences were not significant in the two higher 3MS tertiles. Discussion: Statins may benefit WM in older adults vulnerable to dementia.
    No preview · Article · Jan 2015 · Alzheimer's and Dementia
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    ABSTRACT: To examine the association between multiple measures of visual impairment (VI) and incident mobility limitations in older adults. Prospective observational cohort study. Memphis, Tennessee, and Pittsburgh, Pennsylvania. Health, Aging and Body Composition study participants aged 70 to 79 without mobility limitations at the Year 3 visit (N = 1,862). Vision was measured at the Year 3 visit, and VI was defined as distance visual acuity (VA) worse than 20/40, contrast sensitivity (CS) less than 1.55 log Contrast, and stereoacuity (SA) greater than 85 arcsec. Incident persistent walking and stair climbing limitation was defined as two consecutive 6-month reports of any difficulty walking one-quarter of a mile or walking up 10 steps after 1, 3, and 5 years of follow-up. At Year 3 (baseline for these analyses), 7.4% had impaired VA, 27.2% had impaired CS, and 29.2% had impaired SA. At all follow-up times, the incidence of walking and stair climbing limitations was higher in participants with VA, CS, or SA impairment. After 5 years, impaired CS and SA were independently associated with greater risk of walking limitation (hazard ratio (HR)CS = 1.3, 95% confidence interval (CI) = 1.1-1.7; HRSA = 1.3, 95% CI = 1.1-1.6) and stair climbing limitation (HRCS = 1.4, 95% CI = 1.1-1.8; HRSA = 1.3, 95% CI=1.1-1.7). Having impaired CS and SA was associated with greater risk of mobility limitations (HRwalking limitations = 2.0, 95% CI = 1.6-2.5; HRstair limitation = 2.1, 95% CI = 1.6-2.8). Multiple aspects of VI may contribute to mobility limitations in older adults. Addressing more than one component of vision may be needed to reduce the effect of vision impairment on functional decline. © 2014, Copyright the Authors Journal compilation © 2014, The American Geriatrics Society.
    No preview · Article · Dec 2014 · Journal of the American Geriatrics Society
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    ABSTRACT: Sarcopenia and visceral obesity have been suggested to aggravate each other, resulting in a vicious cycle. However, evidence based on prospective study is very limited. Our purpose was to investigate whether visceral fat promotes a decrease in skeletal muscle mass and vice versa. We observed changes in anthropometric and body composition data during a follow-up period of 27.6±2.8 months in 379 Korean men and women (mean age 51.9±14.6 years) from the Korean Sarcopenic Obesity Study (KSOS). Appendicular lean soft tissue (ALST) mass was calculated using dual-energy X-ray absorptiometry, and visceral fat area (VFA) was measured using computed tomography at baseline and follow-up examination. ALST mass significantly decreased, whereas trunk and total fat mass increased in both men and women despite no significant change in weight and body mass index. In particular, women with visceral obesity at baseline had a greater decrease in ALST mass than those without visceral obesity (P = 0.001). In multiple linear regression analysis, baseline VFA was an independent negative predictor of the changes in ALST after adjusting for confounding factors including age, gender, life style and body composition parameters, insulin resistance, high sensitivity C-reactive protein and vitamin D levels (P = 0.001), whereas the association between baseline ALST mass and changes in VFA was not statistically significant (P = 0.555). This longitudinal study showed that visceral obesity was associated with future loss of skeletal muscle mass in Korean adults. These results may provide novel insight into sarcopenic obesity in an aging society.
    Full-text · Article · Dec 2014 · PLoS ONE
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    ABSTRACT: To assess the relationship between sensorimotor nerve function and incident mobility disability over 10 years. Prospective cohort study with longitudinal analysis. Two U.S. clinical sites. Population-based sample of community-dwelling older adults with no mobility disability at 2000/01 examination (N = 1,680; mean age ± SD 76.5 ± 2.9, body mass index 27.1 ± 4.6; 50.2% female, 36.6% black, 10.7% with diabetes mellitus). Motor nerve conduction amplitude (poor <1 mV) and velocity (poor <40 m/s) were measured on the deep peroneal nerve. Sensory nerve function was measured using 10- and 1.4-g monofilaments and vibration detection threshold at the toe. Lower extremity symptoms included numbness or tingling and aching or burning pain. Incident mobility disability assessed semiannually over 8.5 years (interquartile range 4.5-9.6 years) was defined as two consecutive self-reports of a lot of difficulty or inability to walk one-quarter of a mile or climb 10 steps. Nerve impairments were detected in 55% of participants, and 30% developed mobility disability. Worse motor amplitude (HR = 1.29 per SD, 95% CI = 1.16-1.44), vibration detection threshold (HR = 1.13 per SD, 95% CI = 1.04-1.23), symptoms (HR = 1.65, 95% CI = 1.26-2.17), two motor impairments (HR = 2.10, 95% CI = 1.43-3.09), two sensory impairments (HR = 1.91, 95% CI = 1.37-2.68), and three or more nerve impairments (HR = 2.33, 95% CI = 1.54-3.53) predicted incident mobility disability after adjustment. Quadriceps strength mediated relationships between certain nerve impairments and mobility disability, although most remained significant. Poor sensorimotor nerve function independently predicted mobility disability. Future work should investigate modifiable risk factors and interventions such as strength training for preventing disability and improving function in older adults with poor nerve function. © 2014, Copyright the Authors Journal compilation © 2014, The American Geriatrics Society.
    No preview · Article · Dec 2014 · Journal of the American Geriatrics Society
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    ABSTRACT: Mitochondrial function is altered with age and variants in mitochondrial DNA (mtDNA) modulate risk for several age-related disease states. However, the association of mtDNA copy number, a readily available marker which reflects mitochondrial depletion, energy reserves, and oxidative stress, on aging and mortality in the general population has not been addressed. To assess the association between mtDNA copy number and two primary outcomes-prevalent frailty and all-cause mortality-we utilize data from participants who were from two multicenter, multiethnic, community-based, prospective studies-the Cardiovascular Health Study (CHS) (1989-2006) and the Atherosclerosis Risk in Communities (ARIC) study (1987-2013). A total of 4892 participants (43.3 % men) from CHS and 11,509 participants (44.9 % men) from ARIC self-identifying as white or black were included in the analysis. mtDNA copy number, the trait of interest, was measured using a qPCR-based method in CHS and an array-based method in ARIC from DNA isolated from whole blood in participants from both cohorts. In race-stratified meta-analyses, we observe a significant inverse association of mtDNA copy number with age and higher mtDNA copy number in women relative to men. Lower mtDNA copy number was also significantly associated with prevalent frailty in white participants from CHS (OR 0.91, 95 % CI 0.85-0.97). Additionally, mtDNA copy number was a strong independent predictor of all-cause mortality in an age- and sex-adjusted, race-stratified analysis of 16,401 participants from both cohorts with a pooled hazard ratio of 1.47 (95 % CI 1.33-1.62) for the lowest quintile of mtDNA copy number relative to the highest quintile. Mitochondrial DNA (mtDNA) copy number is associated with age and sex. Lower mtDNA copy number is also associated with prevalent frailty. mtDNA copy number is a significant predictor of all-cause mortality in a multiethnic population.
    Full-text · Article · Dec 2014 · Journal of Molecular Medicine
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    ABSTRACT: Objectives To describe the development of the Pittsburgh Fatigability Scale (PFS) and establish its reliability and concurrent and convergent validity against performance measures.DesignCross-sectional.SettingUniversity of Pittsburgh, Pittsburgh, Pennsylvania.ParticipantsScale development sample: 1,013 individuals aged 60 and older from two registries; validation sample: 483 adults aged 60 and older from the Baltimore Longitudinal Study of Aging (BLSA).MeasurementsThe scale development sample and BLSA participants self-administered an initial 26-item perceived fatigability scale. BLSA participants also completed measures of performance fatigability (perceived exertion from a standard treadmill task and performance deterioration from a fast-paced long-distance corridor walk), a 6-m usual-paced corridor walk, and five timed chair stands.ResultsPrincipal components analysis with varimax rotation reduced the 26-item scale to the 10-item PFS. The PFS showed strong internal consistency (Cronbach's alpha 0.88) and excellent test–retest reliability (intraclass correlation 0.86). In the validation sample, PFS scores, adjusted for age, sex, and race, were greater for those with high performance fatigability, slow gait speed, worse physical function, and lower fitness, with differences between high and low fatigability ranging from 3.2 to 5.1 points (P < .001).Conclusion The 10-item PFS physical fatigability score is a valid and reliable measure of perceived fatigability in older adults and can serve as an adjunct to performance-based fatigability measures for identifying older adults at risk of mobility limitation in clinical and research settings.
    Full-text · Article · Dec 2014 · Journal of the American Geriatrics Society
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    ABSTRACT: Objectives To examine the association between statin use and objectively assessed decline in gait speed in community-dwelling older adults.DesignLongitudinal cohort study.SettingHealth, Aging and Body Composition (Health ABC) Study.ParticipantsTwo thousand five participants aged 70–79 at baseline with medication and gait speed data at 1998–99, 1999–2000, 2001–02, and 2002–03.MeasurementsThe independent variables were any statin use and their standardized daily doses (low, moderate, high) and lipophilicity. The primary outcome measure was decline in gait speed of 0.1 m/s or more in the following year of statin use. Multivariable generalized estimating equations were used, adjusting for demographic characteristics, health-related behaviors, health status, and access to health care.ResultsStatin use increased from 16.2% in 1998–99 to 25.6% in 2002–03. The overall proportions of those with decline in gait speed of 0.1 m/s or more increased from 22.2% in 1998 to 23.9% in 2003. Statin use was not associated with decline in gait speed of 0.1 m/s or more (adjusted odds ratio (AOR) = 0.90, 95% confidence interval (CI) = 0.77–1.06). Similar nonsignificant trends were also seen with the use of hydrophilic or lipophilic statins. Users of low-dose statins were found to have a 22% lower risk of decline in gait speed than nonusers (AOR = 0.78, 95% CI = 0.61–0.99), which was mainly driven by the results from 1999–2000 follow-up.Conclusion These results suggest that statin use did not increase decline in gait speed in community-dwelling older adults.
    Full-text · Article · Dec 2014 · Journal of the American Geriatrics Society
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    ABSTRACT: Background: Physical activity in older adults has physical and mental health benefits. The positive effects of exercise may be even greater in those without a regular exercise routine. We examined the impact of the Arthritis Foundation Exercise Program (AFEP) in 48 community-based sites in Western Pennsylvania. Pain and energy levels were assessed in those who self-reported a pre-program routine of “never” or “sometimes” exercising vs. those who reported “regularly” exercising. Methods: The exercise program for this study was a 10-week 20-session program designed for those with arthritis or joint pain. Sixty-minute sessions include range-of-motion, endurance, strengthening, arthritis-management education, and relaxation. Data on attendance, demographics, bodily pain, and energy were compared. Bodily pain and energy were assessed using standard questionnaires. Results: The sample consisted of 378 participants (never/sometimes exercise n=244; regular exercise n=134). Attendance and demographics did not significantly differ between groups. Average age was 72.7 (± 8.0) years; 87.8% were women, 38% had high school education or less, and 80.3% were Caucasian; average attendance was 14 sessions (± 5.3). Energy level on a scale of 0-10 increased significantly within the “never/sometimes” group over the 10-week program (5.84 to 6.25, p = .0046), but not within the “regular” group. Bodily pain decreased for the “never/sometimes” group, and increased for the “regular” group; however, neither of these within-group changes was statistically significant. Conclusions: Although many exercise programs for older adults in community settings attract those who are already familiar with exercise, engaging and motivating those who rarely exercise can have important benefits, including energy level.
    No preview · Conference Paper · Nov 2014
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    ABSTRACT: Background: Cardiovascular disease (CVD) is a major health problem accounting for 30% of deaths globally. Projected increases in the population aged 60+ are greatest in developing countries, including India and will lead to increased CVD burden. Hypertension is the most common risk factor for CVD worldwide. We examined the prevalence of CVD and its relationship with hypertension and other risk factors in a cohort of rural Indians from the Mobility and Independent Living in Elders Study (MILES). Methods: MILES is an observational cohort study, which enrolled 562 community dwelling men(N=281) and women(N=281), aged 60+ in Andhra Pradesh, India. CVD was defined as a composite of self-reported history of CVD, major ECG abnormality or peripheral artery disease. Logistic regression was used to analyze the association between CVD and risk factors in cross-sectional analyses. Results: Despite low mean BMI (men=21.4, women=23.1), prevalence of hypertension (men=51.3%, women=49.1%) and CVD (men=24.6%, women=25.6%) were high. However, only 28.7% of hypertensive individuals were on treatment and 47.8 % of the treated still had uncontrolled hypertension. In multivariable analysis, hypertension was significantly associated with CVD in both men [OR=2.58(1.22-4.21)] and women [OR=1.79(1.02-3.20)]. Greater number of depressive symptoms and higher BMI were significantly associated with CVD only in men. Conclusion: The prevalence of hypertension, a major contributor to CVD is high among rural Indians, aged 60+. There is low awareness of hypertension and poor treatment optimization in this cohort. These data indicate urgent need for primary prevention measures and increasing availability of treatment to prevent further complications.
    No preview · Conference Paper · Nov 2014
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    ABSTRACT: Background: Mitochondrial dysfunction is a prominent hallmark of many sensory neuropathies. The purpose of this study was to assess the influence of mitochondrial DNA sequence variation on peripheral nerve function in the population-based Health, Aging, and Body Composition Study. Methods: We investigated the role of common mitochondrial DNA variation (n = 1,580) and complete mitochondrial DNA sequences (n = 138) on peroneal motor nerve conduction velocity and amplitude, average vibration detection threshold, and monofilament sensitivity. Results: Nominal associations among common mitochondrial DNA variants and haplogroups were identified but were not statistically significant after adjustment for multiple comparisons. Sequence-based approaches were used to identify aggregate variant associations across the 16S rRNA (weighted-sum, p = 2E-05 and variable threshold, p = 9E-06) for nerve conduction velocity. Several of these rare 16S variants occurred at or near sites with earlier disease associations and are also in close proximity to the peptidyl transferase center, which is the catalytic center of the 16S rRNA CONCLUSIONS: These results suggest that sequence variation related to mitochondrial protein synthesis/assembly is associated with peripheral nerve function and may provide insight into targets for intervention or new clinical strategies to preserve nerve function in late life.
    No preview · Article · Nov 2014 · The Journals of Gerontology Series A Biological Sciences and Medical Sciences
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    ABSTRACT: Background: The frailty syndrome is as a well-established condition of risk for disability. Aim of the study is to explore whether a physical activity (PA) intervention can reduce prevalence and severity of frailty in a community-dwelling elders at risk of disability. Methods: Exploratory analyses from the Lifestyle Interventions and Independence for Elders pilot, a randomized controlled trial enrolling 424 community-dwelling persons (mean age=76.8 years) with sedentary lifestyle and at risk of mobility disability. Participants were randomized to a 12-month PA intervention versus a successful aging education group. The frailty phenotype (ie, ≥3 of the following defining criteria: involuntary weight loss, exhaustion, sedentary behavior, slow gait speed, poor handgrip strength) was measured at baseline, 6 months, and 12 months. Repeated measures generalized linear models were conducted. Results: A significant (p = .01) difference in frailty prevalence was observed at 12 months in the PA intervention group (10.0%; 95% confidence interval = 6.5%, 15.1%), relative to the successful aging group (19.1%; 95% confidence interval = 13.9%,15.6%). Over follow-up, in comparison to successful aging participants, the mean number of frailty criteria in the PA group was notably reduced for younger subjects, blacks, participants with frailty, and those with multimorbidity. Among the frailty criteria, the sedentary behavior was the one most affected by the intervention. Conclusions: Regular PA may reduce frailty, especially in individuals at higher risk of disability. Future studies should be aimed at testing the possible benefits produced by multidomain interventions on frailty.
    No preview · Article · Nov 2014 · The Journals of Gerontology Series A Biological Sciences and Medical Sciences

Publication Stats

42k Citations
3,922.26 Total Impact Points

Institutions

  • 1991-2015
    • University of Pittsburgh
      • • Department of Epidemiology
      • • Department of Medicine
      Pittsburgh, Pennsylvania, United States
  • 2014
    • United States Department of Veterans Affairs
      Бедфорд, Massachusetts, United States
    • Columbia University
      New York City, New York, United States
    • Pennsylvania Department of Health
      Harrisburg, Pennsylvania, United States
  • 2013
    • Bristol-Myers Squibb
      New York, New York, United States
    • University of Pennsylvania
      Philadelphia, Pennsylvania, United States
    • University of Cambridge
      • Department of Public Health and Primary Care
      Cambridge, England, United Kingdom
  • 2005-2013
    • National Institute on Aging
      • • Clinical Research Branch (CRB)
      • • Laboratory of Epidemiology, Demography and Biometry (LEDB)
      Baltimore, Maryland, United States
    • San Francisco VA Medical Center
      San Francisco, California, United States
    • University of Queensland 
      • School of Human Movement Studies
      Brisbane, Queensland, Australia
    • Duquesne University
      • Department of Mathematics and Computer Science
      Pittsburgh, Pennsylvania, United States
    • Fletcher Allen Health Care
      Burlington, Vermont, United States
  • 2002-2013
    • Boston University
      • Section of Cardiovascular Medicine
      Boston, Massachusetts, United States
  • 2011
    • Beth Israel Deaconess Medical Center
      • Division of Gerontology
      Boston, MA, United States
    • Kaiser Permanente
      Oakland, California, United States
    • California Pacific Medical Center Research Institute
      • Research Institute
      San Francisco, CA, United States
  • 2005-2010
    • University of Lausanne
      • Faculté de biologie et de médecine (FBM)
      Lausanne, VD, Switzerland
  • 2009
    • University of South Carolina
      Columbia, South Carolina, United States
  • 2005-2008
    • Wake Forest School of Medicine
      • • Sticht Center on Aging
      • • Department of Internal Medicine
      Winston-Salem, NC, United States
  • 2007
    • VU University Medical Center
      • Department of Psychiatry
      Amsterdam, North Holland, Netherlands
  • 2005-2007
    • VU University Amsterdam
      • • IHS-Institute of Health Sciences
      • • Department of Psychiatry
      Amsterdamo, North Holland, Netherlands
  • 2006
    • Magee-Womens Hospital
      Pittsburgh, Pennsylvania, United States
  • 2005-2006
    • Maastricht University
      Maestricht, Limburg, Netherlands
  • 2004-2006
    • Kent State University
      Кент, Ohio, United States
    • University of California, San Francisco
      • Department of Psychiatry
      San Francisco, CA, United States
  • 1998-2006
    • Johns Hopkins University
      Baltimore, Maryland, United States
    • University of Washington Seattle
      • Department of Biostatistics
      Seattle, WA, United States
  • 2003
    • University of Tennessee
      Knoxville, Tennessee, United States
  • 2000
    • Georgetown University
      • Division of Cardiology
      Washington, D. C., DC, United States
  • 1993
    • Allegheny General Hospital
      Pittsburgh, Pennsylvania, United States