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1.
Eur Arch Paediatr Dent ; 19(6): 403-410, 2018 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-30315536

RESUMEN

AIM: To investigate the oral healthcare practices and knowledge of parents and nannies in Kuwait. METHODS: A cross-sectional interview-based survey was carried out on parents and nannies to explore their demographics, oral health care practices and knowledge. Independent t-test was used to assess differences in practice and knowledge between parents and nannies. Multiple linear regression compared practice and knowledge of parents and nannies, adjusting for age, time spent in childcare, national origin, education, governorate of residence and number of other children in the household. RESULTS: Three-hundred caregivers were interviewed, parents (N = 146, 49%) and nannies (N = 154, 51%). Parents had a higher mean practice score (parents 3.25, nannies 2.69, p < 0.001), but a similar knowledge score to nannies (parents 38.0, nannies 37.6, p > 0.48). Governorate of residence predicted lower practice scores for parents residing north of the Kuwaiti capital compared to those residing elsewhere (ß = - 0.571, p < 0.05). Education weakly predicted lower practice scores for nannies beyond high school, but better scores for parents with a college degree. Education also predicted higher knowledge scores among nannies with college degrees (ß = 2.249, p = 0.06), but for the lower knowledge scores (ß = - 3.693, p = 0.08) among parents with college degrees. CONCLUSION: Caregivers' oral health practices and knowledge scores were good. However, nannies had poorer child oral healthcare practices. Results highlight the need to involve nannies in child oral healthcare education.


Asunto(s)
Cuidadores , Conocimientos, Actitudes y Práctica en Salud , Higiene Bucal , Padres , Adulto , Niño , Estudios Transversales , Escolaridad , Femenino , Humanos , Entrevistas como Asunto , Kuwait , Modelos Lineales , Masculino , Salud Bucal , Encuestas y Cuestionarios
4.
AIDS Res Hum Retroviruses ; 22(11): 1113-21, 2006 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-17147498

RESUMEN

Aerobic capacity and physical functioning decline with age and chronic illness. The extent of physical disability is unknown in older HIV-infected adults, who represent a rapidly growing proportion of HIV/AIDS patients in the United States. We performed functional performance testing including treadmill testing in 32 HIV-infected male veterans aged 40-69 years. Controls were 47 healthy male subjects tested previously in the same exercise laboratory. HIV-infected subjects were classified as younger (40-49 years, n = 12) or older age (50+ years, n = 20). Peak aerobic capacity (VO2peak) was significantly reduced in the older vs. younger HIV subjects [19.1 mL/kg/min +/- 5.7 (mean, SD) vs. 25.2 +/- 4.2, p = 0.01]. VO2peak was reduced 41% +/- 15% (mean, SD) in HIV-infected subjects compared to expected values from age-matched healthy controls. Regression analyses show a similar decline in VO2peak with age in HIV-infected and healthy controls. Mean 6-min walk distance was not significantly different between the HIV-infected age groups, and was reduced only 8% compared to expected values for healthy adults. Current CD4 count and HAART exposure were similar in the two age groups and were not significantly associated with VO2peak. Anemia (HCT <35%) was significantly associated with reduced VO2peak (p = 0.02), but this association was not independent of the effect of age (p = 0.1). We conclude that older HIV-infected adults have markedly impaired aerobic capacity but maintain the capacity to undertake day-to-day activities. Additional physiologic and metabolic testing is needed to measure the effect of HAART toxicity and primary aging on aerobic capacity, and to determine if older HIV-infected adults are at greater risk.


Asunto(s)
Envejecimiento/fisiología , Ejercicio Físico/fisiología , Infecciones por VIH , Adulto , Anciano , Humanos , Masculino , Persona de Mediana Edad , Aptitud Física/fisiología
6.
Int J Obes Relat Metab Disord ; 26(5): 663-9, 2002 May.
Artículo en Inglés | MEDLINE | ID: mdl-12032751

RESUMEN

OBJECTIVE: Recent studies indicate that abdominal fat accumulation, in particular intra-abdominal fat, is related to impaired endothelial function in young healthy volunteers. The aim of this study was to examine whether the distribution of body fat depots is related to impaired endothelial function in older men. METHODS: Cross-sectional sample of 38 older (68+/-1 y) sedentary (VO(2max)=2.4+/-0.1 l/min) men. Flow-mediated endothelial dependent vasodilation (EDD) was assessed in the brachial artery in response to reactive hyperemia using high-resolution ultrasound. Abdominal subcutaneous and visceral fat depots were assessed by computed tomography scan (CT-scan) at the L(4)-L(5) region in the supine position. Percentage body fat was assessed via dual-energy X-ray absorptiometry (DEXA). RESULTS: Flow-mediated percentage change in brachial artery was 7.6+/-0.7%, suggesting an impaired flow-mediated EDD. Using simple linear regression analysis, there were no statistically significant relationship observed between flow-mediated EDD and the indices of total and abdominal adiposity (percentage body fat=29.3+/-0.9%, r=-0.11; total abdominal fat area=465+/-23 cm(2), r=-0.1; intra-abdominal fat area=200+/-14 cm(2), r=-0.14; subcutaneous fat area=265+/-13 cm(2), r=-0.05; BMI=29.3+/-0.9 kg/m(2), r=-0.07; and waist to hip ratio=0.98+/-0.01, r=-0.20). CONCLUSION: These findings suggest that in older sedentary men there is no clear correlation between adiposity and body fat distribution and impairment of flow-mediated endothelium dependent vasodilation.


Asunto(s)
Tejido Adiposo , Envejecimiento , Composición Corporal , Endotelio Vascular/fisiopatología , Vasodilatación , Absorciometría de Fotón , Anciano , Velocidad del Flujo Sanguíneo , Arteria Braquial , Enfermedades Cardiovasculares , Estudios Transversales , Diabetes Mellitus/fisiopatología , Prueba de Esfuerzo , Intolerancia a la Glucosa/fisiopatología , Prueba de Tolerancia a la Glucosa , Humanos , Modelos Lineales , Masculino , Obesidad/fisiopatología , Consumo de Oxígeno , Factores de Riesgo , Tomografía Computarizada por Rayos X , Ultrasonografía Doppler , Vísceras
7.
Am J Med Genet ; 102(4): 346-52, 2001 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-11503162

RESUMEN

Although a familial contribution to human longevity is recognized, the nature of this contribution is largely unknown. We have examined the familial contribution to life span in the Old Order Amish (OOA) population of Lancaster County, Pennsylvania. Analyses were conducted on 1,655 individuals, representing all those born prior to 1890 and appearing in the most widely available genealogy, surviving until at least age 30 years, and with known date of death. Mean age at death (+/-SD) in this population was 70.7 +/- 15.6 years, and this did not change appreciably over time. Parental and offspring ages at death were significantly correlated, as were ages of death among siblings. Offspring longevity was correlated with longevity of both parents, and in more or less additive fashion. For example, mean offspring age at death was 69.4 +/- 15.3 years in individuals for whom both parents died before the age of 75 years (n = 280) and increased to 73.5 +/- 16.0 years in individuals for whom neither parent died before the age of 75 years (n = 311). These differences were highly significant (P = 0.006). We estimated heritability of life span to be 25% +/- 5%, suggesting that the additive effects of genes account for one quarter of the total variability in life span in the OOA. We conclude that longevity is moderately heritable in the OOA, that the genetic effects are additive, and that genetic influences on longevity are likely to be expressed across a broad range of ages. Published 2001 Wiley-Liss, Inc.


Asunto(s)
Cristianismo , Longevidad/genética , Adulto , Anciano , Anciano de 80 o más Años/estadística & datos numéricos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Pennsylvania , Dinámica Poblacional , Población Rural/estadística & datos numéricos
8.
J Clin Endocrinol Metab ; 86(8): 3604-10, 2001 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-11502785

RESUMEN

Aging is associated with reduced GH, IGF-I, and sex steroid axis activity and with increased abdominal fat. We employed a randomized, double-masked, placebo-controlled, noncross-over design to study the effects of 6 months of administration of GH alone (20 microg/kg BW), sex hormone alone (hormone replacement therapy in women, testosterone enanthate in men), or GH + sex hormone on total abdominal area, abdominal sc fat, and visceral fat in 110 healthy women (n = 46) and men (n = 64), 65-88 yr old (mean, 72 yr). GH administration increased IGF-I levels in women (P = 0.05) and men (P = 0.0001), with the increment in IGF-I levels being higher in men (P = 0.05). Sex steroid administration increased levels of estrogen and testosterone in women and men, respectively (P = 0.05). In women, neither GH, hormone replacement therapy, nor GH + hormone replacement therapy altered total abdominal area, sc fat, or visceral fat significantly. In contrast, in men, administration of GH and GH + testosterone enanthate decreased total abdominal area by 3.9% and 3.8%, respectively, within group and vs. placebo (P = 0.05). Within-group comparisons revealed that sc fat decreased by 10% (P = 0.01) after GH, and by 14% (P = 0.0005) after GH + testosterone enanthate. Compared with placebo, sc fat decreased by 14% (P = 0.05) after GH, by 7% (P = 0.05) after testosterone enanthate, and by 16% (P = 0.0005) after GH + testosterone enanthate. Compared with placebo, visceral fat did not decrease significantly after administration of GH, testosterone enanthate, or GH + testosterone enanthate. These data suggest that in healthy older individuals, GH and/or sex hormone administration elicits a sexually dimorphic response on sc abdominal fat. The generally proportionate reductions we observed in sc and visceral fat, after 6 months of GH administration in healthy aged men, contrast with the disproportionate reduction of visceral fat reported after a similar period of GH treatment of nonelderly GH deficient men and women. Whether longer term administration of GH or testosterone enanthate, alone or in combination, will reduce abdominal fat distribution-related cardiovascular risk in healthy older men remains to be elucidated.


Asunto(s)
Tejido Adiposo/efectos de los fármacos , Estradiol/sangre , Terapia de Reemplazo de Estrógeno , Hormona de Crecimiento Humana/farmacología , Testosterona/sangre , Testosterona/farmacología , Abdomen , Tejido Adiposo/anatomía & histología , Anciano , Índice de Masa Corporal , Peso Corporal , Método Doble Ciego , Femenino , Humanos , Factor I del Crecimiento Similar a la Insulina/metabolismo , Imagen por Resonancia Magnética , Masculino , Placebos , Valores de Referencia , Caracteres Sexuales , Testosterona/análogos & derivados , Estados Unidos , Vísceras , Población Blanca
9.
Arch Phys Med Rehabil ; 82(7): 879-84, 2001 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-11441372

RESUMEN

OBJECTIVE: To investigate the hypothesis that treadmill training will improve peak fitness, while lowering the energy cost of hemiparetic gait in chronic stroke patients. DESIGN: Noncontrolled exercise intervention study with repeated-measures analysis. SETTING: Hospital-based senior exercise research center. PARTICIPANTS: Twenty-three patients (mean age +/- standard deviation [SD] 67 +/- 8 yr) with chronic hemiparetic gait after remote (>6 mo) ischemic stroke. INTERVENTION: Three 40-minute sessions of treadmill exercise weekly for 6 months. MAIN OUTCOME MEASURES: Peak exercise capacity (VO2peak) and rate of oxygen consumption during submaximal effort treadmill walking (economy of gait) by open circuit spirometry and ambulatory workload capacity before and after 3 and 6 months of training. RESULTS: Patients who completed 3 months of training (n = 21) increased their VO2peak +/- SD from 15.4 +/- 2.9 mL x kg(-1) x min(-1) to 17.0 +/- 4.4 mL x kg(-1) x min(-1) (p <.02) and lowered their oxygen demands of submaximal effort ambulation from 9.3 +/- 2 mL x kg(-1) x min(-1) to 7.9 +/- 1.5 mL x kg(-1) x min(-1) (p =.002), which enabled them to perform the same constant-load treadmill task using 20% less of their peak exercise capacity (62.3% +/- 17.2% vs 49.9% +/- 19.3%, p <.002). Gains in VO2peak and economy of gait plateaued by 3 months, while peak ambulatory workload capacity progressively increased by 39% (p <.001) over 6 months. CONCLUSIONS: Treadmill training improves physiologic fitness reserve in chronic stroke patients by increasing VO2peak while lowering the energy cost of hemiparetic gait, and increases peak ambulatory workload capacity. These improvements may enhance functional mobility in chronic stroke patients.


Asunto(s)
Terapia por Ejercicio , Rehabilitación de Accidente Cerebrovascular , Caminata/fisiología , Anciano , Enfermedad Crónica , Prueba de Esfuerzo , Femenino , Humanos , Modelos Lineales , Masculino , Consumo de Oxígeno , Espirometría , Accidente Cerebrovascular/fisiopatología
10.
J Am Geriatr Soc ; 49(6): 755-62, 2001 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-11454114

RESUMEN

OBJECTIVE: To determine the effects of a 6-month exercise program on ambulatory function, free-living daily physical activity, peripheral circulation, and health-related quality of life (QOL) in disabled older patients with intermittent claudication. DESIGN: Prospective, randomized controlled trial. SETTING: University Medical (Center and Veterans Affairs Medical Center, Baltimore, Maryland. PARTICIPANTS: Thirty-one of 61 patients with Fontaine stage II peripheral arterial occlusive disease (PAOD) were randomized to exercise rehabilitation and 30 to usual-care control. Three patients from the exercise group and six patients from the control group dropped out, leaving 28 and 24 patients, respectively, completing the study in each group. INTERVENTION: Six months of exercise rehabilitation. MEASUREMENTS: Treadmill distance walked to onset of claudication and to maximal claudication, ambulatory function, peripheral circulation, perceived QOL, and daily physical activity. RESULTS: Compliance with the exercise program was 73% of the possible sessions. Exercise rehabilitation increased treadmill distance walked to onset of claudication by 134% (P < .001) and to maximal claudication by 77% (P < .001), walking economy by 12% (P = .003), 6-minute walk distance by 12% (P < .001), and maximal calf blood flow by 30% (P < .001). Changes in distance walked to maximal pain correlated with changes in walking economy (r = -.50, P = .013) and changes in maximal calf blood flow (r = .38, P = .047). Exercise rehabilitation increased accelerometer-derived daily physical activity by 38% (P < .001); this change correlated with the change in distance walked to maximal pain (r = .45, P = .020). These improvements were significantly better than the changes in the control group (P < .05). CONCLUSION: Improvements in claudication following exercise rehabilitation in older PAOD patients are dependent on improvements in peripheral circulation and walking economy. Improvement in treadmill claudication distances in these patients translated into increased accelerometer-derived physical activity in the community, which enabled the patients to become more functionally independent.


Asunto(s)
Actividades Cotidianas , Circulación Sanguínea , Terapia por Ejercicio/métodos , Claudicación Intermitente/fisiopatología , Claudicación Intermitente/rehabilitación , Anciano , Prueba de Esfuerzo , Terapia por Ejercicio/normas , Femenino , Evaluación Geriátrica , Estado de Salud , Humanos , Claudicación Intermitente/clasificación , Claudicación Intermitente/diagnóstico , Claudicación Intermitente/psicología , Masculino , Pletismografía , Estudios Prospectivos , Calidad de Vida , Índice de Severidad de la Enfermedad , Encuestas y Cuestionarios , Factores de Tiempo , Resultado del Tratamiento
11.
J Am Geriatr Soc ; 49(1): 76-9, 2001 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-11207846

RESUMEN

OBJECTIVES: It is well recognized that a favorable lipid profile provides protection from atherosclerotic cardiovascular disease. Because the major cause of nontraumatic death in the western world is considered to be due to cardiovascular disease, centenarians (defined here as subjects over 95 years of age) are believed to possess "atherosclerotic protective" factors. However, it is impossible to study comparatively the lipid profile in centenarians because of lack of controls. Assuming that certain genes responsible for encoding the lipid phenotype may be inherited, we studied the lipid profile characteristics of offspring of centenarians and compared them with control groups. DESIGN: Prospective cohort study. SETTING: The study was part of the Longevity Genes Project at Albert Einstein College of Medicine. PARTICIPANTS: Ashkenazi Jewish centenarians (n = 27, 98.4 +/- 10.4 years) and their offspring (n = 33, 67.4 +/- 1.4 years). The Ashkenazi Jewish offsprings' spouses, who were not related by blood to the centenarians or their offspring, were used as a control group (n = 26, 68.4 +/- 1.2 years). MEASUREMENTS: The lipoprotein profile of the offspring was compared with the above control group and to a larger control group (age and gender matched) from the National Health and Nutrition Examination Survey (NHANES) III study (without the sample weights, n = 394, 60 to 69 years). RESULTS: Female offspring of centenarians had significantly higher plasma levels of high density lipoprotein-cholesterol (HDL-C) levels compared with controls (70.2 +/- 3.1 vs 59.0 +/- 4.1 mg/dl, P = .029). Male offspring of centenarians had higher plasma levels of HDL-C levels (56.2 +/- 7.1 vs 44.3 +/- 3.4 mg/dl, P = 0.130) and significantly lower LDL-cholesterol (LDL-C) levels (95.0 +/- 6.0 vs 127.0 +/- 8.0 mg/dl, P = .009) compared with controls. CONCLUSION: Offspring of centenarians have a favorable lipid profile compared with controls. These data support the notion that a certain phenotypic lipid profile may be transmitted in families and suggest that a favorable lipid profile may play a role in longevity.


Asunto(s)
Enfermedades Cardiovasculares/epidemiología , Lipoproteínas/sangre , Anciano , Anciano de 80 o más Años , Enfermedades Cardiovasculares/sangre , Enfermedades Cardiovasculares/genética , Estudios de Cohortes , Femenino , Humanos , Judíos , Lipoproteínas/genética , Longevidad , Masculino , Fenotipo , Estudios Prospectivos
12.
Vasc Med ; 6(3): 157-62, 2001.
Artículo en Inglés | MEDLINE | ID: mdl-11789970

RESUMEN

Patients with peripheral arterial disease (PAD) and intermittent claudication often have coronary artery disease (CAD) and other comorbid medical problems. There is a paucity of information on the impact of coexistent medical conditions on exercise capacity and functional status in patients with PAD. This study examined the impact of CAD, diabetes, cigarette smoking, prior peripheral surgical revascularization and other medical conditions on claudication pain times and peak oxygen capacity (VO2) during maximal effort treadmill testing in 119 male outpatient volunteers (ankle-brachial index (ABI) of 0.65 +/- 0.2, mean +/- SEM) with a history of Fontaine Stage II PAD. Smoking status was significantly related to ambulatory function. Current smokers had a lower peak VO2 expressed in l/min than either former or never smokers (ANCOVA adjusted for age, p = 0.003). However, after adjustment for body weight, there was only a trend for a difference in peak VO2 between current (13.2 +/- 0.5 ml/kg per min), former (14.2 +/- 0.4 ml/kg per min) and never (15.4 +/- 1.0 ml/kg per min) smokers (ANCOVA, p = 0.10). Current smokers had a shorter time to onset of claudication pain (p = 0.023) and shorter maximal claudication pain times (p = 0.029) than former or never smokers (p = 0.023). The ABI 1 min after cessation of exercise was also lower in smokers compared to former and never smokers (p = 0.018). There were no significant differences in functional performance measures or time to recovery from maximal claudication pain when patients were categorized on the presence or absence of CAD, diabetes, peripheral revascularization, arthritis, hypertension or dyslipidemia. Therefore, smoking adversely affected exercise capacity in these PAD patients, whereas the presence of CAD, diabetes and other medical problems had a relatively minor impact on exercise capacity. In conclusion, the relatively minor impact of comorbid medical conditions on walking ability in patients with PAD reflects the overwhelming limitation in ambulatory function due to the claudication pain.


Asunto(s)
Ejercicio Físico , Claudicación Intermitente/epidemiología , Claudicación Intermitente/fisiopatología , Resistencia Física , Anciano , Comorbilidad , Enfermedad Coronaria/epidemiología , Diabetes Mellitus/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Dolor/fisiopatología , Fumar/efectos adversos , Caminata
13.
J Am Geriatr Soc ; 49(12): 1657-64, 2001 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-11844000

RESUMEN

OBJECTIVES: To compare the longitudinal changes in maximal aerobic capacity (VO2max) in healthy middle aged and older athletes and sedentary men. DESIGN: A cohort study with mean follow-up of 8.7 years (range 4.0-12.8). SETTING: Outpatient research at a tertiary hospital. PARTICIPANTS: Forty-two healthy, middle aged, and older athletes (initial age 64 +/- 1 year) and 47 healthy sedentary men of comparable age recruited for research studies. MEASUREMENTS: VO2max during a maximal treadmill test. RESULTS: At baseline, the cross-sectional rates of decline in VO2max with age (slope) were virtually identical in the athletes and sedentary men (-0.42 versus -0.43 mL x kg(-1) x min(-1) x year(-1)). At follow-up, the VO2max had declined by 11.9 +/- 1.1 mL x kg(-1) x min(-1) (22%) in the athletes, a crude average rate of -1.4 +/- 0.14 mL x kg(-1)x min(-1) x year(-1). By comparison, the VO2max declined by 4.4 +/- 0.6 mL x kg(-1) x min(-1) (14%) in the sedentary men, a crude average rate of change of -0.48 +/- 0.07 mL x kg(-1) x min(-1) x year(-1). Therefore, the observed absolute rate of longitudinal decline in VO2max in the athletes was triple that of the sedentary men (P= .001) and significantly greater than the decline predicted by their baseline cross-sectional data (P= .001). Post hoc analyses of the longitudinal data in the athletes based on the training regimens over the follow-up period demonstrated that the seven individuals who continued to train vigorously ("high training") had no significant decline in VO2max (0.28% change in VO2max per year). By contrast, the VO2max declined by 2.6% per year in the "moderate training" group (N=21), 4.6% per year in the "low training" group (N=13), and 4.7% per year in the two individuals who developed cardiovascular disease. CONCLUSION: The longitudinal decline in VO2max in older male endurance athletes is highly dependent upon the continued magnitude of the training stimulus. The majority of the athletes reduced their training levels over time, resulting in longitudinal reductions in VO2max two to three times as large as those predicted by cross-sectional analyses or those observed longitudinally in their sedentary peers.


Asunto(s)
Envejecimiento/fisiología , Enfermedades Cardiovasculares/fisiopatología , Ejercicio Físico/fisiología , Resistencia Física/fisiología , Aptitud Física/fisiología , Deportes/fisiología , Anciano , Estudios de Cohortes , Prueba de Esfuerzo , Estudios de Seguimiento , Frecuencia Cardíaca/fisiología , Humanos , Estilo de Vida , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Espirometría , Factores de Tiempo
14.
J Gerontol A Biol Sci Med Sci ; 55(10): M570-7, 2000 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-11034229

RESUMEN

BACKGROUND: The purposes of this study were to identify predictors of increased claudication distances following exercise rehabilitation in peripheral arterial occlusive disease (PAOD) patients with intermittent claudication and determine whether improved claudication distances translated into increased free-living daily physical activity in the community setting. METHODS: Sixty-three patients were recruited (age, 68+/-1 years, mean +/- standard error). Patients were characterized on treadmill claudication distances, walking economy, peripheral circulation, cardiopulmonary function, self-perceived ambulatory function, body composition, baseline comorbidities, and free-living daily physical activity before and after a 6-month treadmill exercise program. RESULTS: Exercise rehabilitation increased distance to onset of claudication pain by 115% (178+/-22 m to 383+/-34 m; p < .001) and distance to maximal claudication pain by 65% (389+/-29 m to 641+/-34 m; p < .001). The increased distance to onset of pain was independently related to a 27% increase in calf blood flow (r = .42, p < .001) and to baseline age (r = -.26, p < .05), and the increased distance to maximal pain was predicted by a 10% increase in peak oxygen uptake (r = .41, p < .001) and by a 10% improvement in walking economy (r = -.34, p < .05). Free-living daily physical activity increased 31% (337+/-29 kcal/day to 443+/-37 kcal/day; p < .001) and was related to the increases in treadmill distances to onset (r = .24, p < .05) and to maximal pain (r = .45, p < .001). CONCLUSIONS: Increased claudication distances following exercise rehabilitation are mediated through improvements in peripheral circulation, walking economy, and cardiopulmonary function, with younger patients having the greatest absolute ambulatory gains. Furthermore, improved symptomatology translated into enhanced community-based ambulation.


Asunto(s)
Ejercicio Físico , Claudicación Intermitente/rehabilitación , Anciano , Anciano de 80 o más Años , Prueba de Esfuerzo , Predicción , Humanos , Claudicación Intermitente/fisiopatología , Pierna/irrigación sanguínea , Persona de Mediana Edad , Consumo de Oxígeno , Dolor/fisiopatología , Esfuerzo Físico , Flujo Sanguíneo Regional , Resultado del Tratamiento , Caminata
15.
J Cardiopulm Rehabil ; 20(3): 165-71, 2000.
Artículo en Inglés | MEDLINE | ID: mdl-10860198

RESUMEN

BACKGROUND: Exercise rehabilitation is advocated to improve function in patients with peripheral arterial disease (PAD) who have intermittent claudication. Patients with PAD often have comorbid medical problems that may interfere with their ability to safely participate in exercise rehabilitation programs. There is a paucity of information regarding the medical comorbidities and the evaluation of PAD patients before their participation in exercise rehabilitation studies. The purpose of this study was to identify comorbidities that predicted exclusion of PAD patients from participation in an aerobic exercise rehabilitation clinical trial. METHODS: This was a prospective cohort study of 225 consecutive outpatient volunteers (mean age 68 +/- 8 years, SD) with a history of Fontaine Stage II PAD recruited for exercise rehabilitation. Patient eligibility was determined by a history and physical exam, blood chemistries, measurement of ankle to brachial index (ABI), and an exercise treadmill test. RESULTS: Seventy-nine volunteers (35%) were medically ineligible: 22 because of symptomatic coronary artery disease, 12 because of severe PAD, and the rest for a variety of medical problems. In stepwise logistic regression analyses, low ABI and use of insulin were predictors of exclusion, whereas peripheral revascularization was an indicator of inclusion. Age, a history of coronary artery disease, myocardial infarction, coronary bypass surgery, and hypertension were not independent determinants of eligibility. CONCLUSIONS: Insulin-requiring diabetes and a low ABI increase the likelihood that older patients with PAD will be ineligible to participate in a research exercise rehabilitation program, whereas peripheral revascularization was associated with inclusion. Whether intensive medical management and peripheral revascularization would enable the claudicants deemed ineligible for entry into the exercise rehabilitation program to safely exercise remains to be determined.


Asunto(s)
Terapia por Ejercicio , Enfermedades Vasculares Periféricas/epidemiología , Enfermedades Vasculares Periféricas/rehabilitación , Anciano , Anciano de 80 o más Años , Baltimore , Determinación de la Presión Sanguínea/métodos , Ensayos Clínicos como Asunto , Comorbilidad , Prueba de Esfuerzo , Hospitales de Veteranos , Humanos , Claudicación Intermitente/epidemiología , Claudicación Intermitente/rehabilitación , Modelos Logísticos , Persona de Mediana Edad , Estudios Prospectivos , Factores de Riesgo , Índice de Severidad de la Enfermedad , Caminata
16.
Am J Epidemiol ; 150(9): 969-77, 1999 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-10547143

RESUMEN

Age differences in height derived from cross-sectional studies can be the result of differential secular influences among the age cohorts. To determine the magnitude of height loss that accompanies aging, longitudinal studies are required. The authors studied 2,084 men and women aged 17-94 years enrolled from 1958 to 1993 in the Baltimore Longitudinal Study of Aging, Baltimore, Maryland. On average, men's height was measured nine times during 15 years and women's height five times during 9 years. The rate of decrease in height was greater for women than for men. For both sexes, height loss began at about age 30 years and accelerated with increasing age. Cumulative height loss from age 30 to 70 years averaged about 3 cm for men and 5 cm for women; by age 80 years, it increased to 5 cm for men and 8 cm for women. This degree of height loss would account for an "artifactual" increase in body mass index of approximately 0.7 kg/m2 for men and 1.6 kg/m2 for women by age 70 years that increases to 1.4 and 2.6 kg/m2, respectively, by age 80 years. True height loss with aging must be taken into account when height (or indexes based on height) is used in physiologic or clinical studies.


Asunto(s)
Envejecimiento/patología , Estatura , Índice de Masa Corporal , Adolescente , Adulto , Factores de Edad , Anciano , Anciano de 80 o más Años , Baltimore , Sesgo , Estudios Transversales , Femenino , Humanos , Modelos Lineales , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Caracteres Sexuales
17.
J Am Geriatr Soc ; 47(8): 923-9, 1999 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-10443851

RESUMEN

OBJECTIVES: Before men older than age 45 participate in vigorous exercise programs, the American Heart Association and the American College of Sports Medicine recommend they undergo a screening maximal exercise treadmill test. We examined the predictive value for subsequent cardiac events of exercise-induced silent myocardial ischemia (SI) during the exercise treadmill test in healthy, sedentary, obese, middle-aged and older men recruited for research studies. DESIGN: A cohort study with 7 years of follow-up. SETTING: Out-patient research at a tertiary hospital. PARTICIPANTS: 170 healthy, sedentary, obese, middle-aged and older (ages 45-79 years) men with no prior history of coronary artery disease (CAD) recruited for research studies. MEASUREMENTS: Cardiac risk factors, exercise-induced SI (ST segment depression on the electrocardiogram during a maximal exercise treadmill test), maximal aerobic capacity (VO2max), and 7- year follow-up data on incident CAD. RESULTS: At baseline, 37 of the men (22%) had exercise-induced SI on their treadmill tests. Seven-year follow-up data was obtained in 97% of the patients. In the interim, 31 men had cardiac endpoints (sudden cardiac death, myocardial infarction, angioplasty, coronary artery bypass graft surgery, angina), and four had noncardiac deaths. Seventeen of the 37 men (46%) with exercise-induced SI on their baseline exercise tests had cardiac endpoints compared with 14 of 133 (11%) men with normal exercise tests (P < .001). Compared with the men with no cardiac endpoints, the men with subsequent cardiac endpoints were older (63 +/- 1 vs 58 +/- 1 years, mean +/- SEM, P < .001) and had a lower maximal aerobic capacity (VO2max) (24 +/- 1 vs 29 +/- 1 mL/kg/min, P < .001). In Cox proportional hazards analysis, exercise-induced SI and a low VO2max were independent predictors of subsequent cardiac endpoints. CONCLUSION: In a healthy population of obese, sedentary, middle-aged and older men, exercise-induced SI and low VO2max were predictors of incident CAD. This suggests that exercise treadmill testing is beneficial in assessing risk for future cardiac events in obese, sedentary individuals.


Asunto(s)
Enfermedad Coronaria/diagnóstico , Isquemia Miocárdica/fisiopatología , Esfuerzo Físico/fisiología , Factores de Edad , Anciano , Angina de Pecho/etiología , Angioplastia , Estudios de Cohortes , Puente de Arteria Coronaria , Muerte Súbita Cardíaca/etiología , Electrocardiografía , Ejercicio Físico/fisiología , Prueba de Esfuerzo , Estudios de Seguimiento , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Infarto del Miocardio/etiología , Isquemia Miocárdica/etiología , Obesidad/complicaciones , Consumo de Oxígeno/fisiología , Valor Predictivo de las Pruebas , Modelos de Riesgos Proporcionales , Factores de Riesgo
18.
Metabolism ; 48(8): 943-5, 1999 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-10459553

RESUMEN

We determined if the apolipoprotein E (APO E) genotype affects the exercise training-induced increase in plasma high-density lipoprotein cholesterol (HDL-C) and HDL2-C. Sedentary overweight men on an American Heart Association (AHA) step I diet had plasma lipoprotein-lipids measured before and after 9 months of endurance exercise training. APO E2 (n = 6), E3 (n = 33), and E4 (n = 12) groups were similar at baseline in terms of age, body weight and composition, and plasma lipoprotein-lipid profiles. APO E2 men had a larger increase in plasma HDL-C and HDL2-C with exercise training than APO E3 and E4 men (HDL-C, 8 +/- 4 v 3 +/- 1 v 2 +/- 1 mg/dL; HDL2-C, 5 +/- 3 v 1 +/- 1 v -1 +/- 1 mg/dL; mean +/- SE, all P < .01). After adjusting for body weight changes, the increases in plasma HDL-C and HDL2-C remained greater in APO E2 versus E3 and E4 men (all P < .03). These results indicate that APO E2 men may have greater plasma HDL-C and HDL2-C increases with endurance exercise training.


Asunto(s)
Apolipoproteínas E/sangre , HDL-Colesterol/sangre , Lipoproteínas HDL/sangre , Factores de Edad , Anciano , Anciano de 80 o más Años , Apolipoproteínas E/genética , Peso Corporal , Ejercicio Físico , Humanos , Lipoproteínas HDL/genética , Masculino , Persona de Mediana Edad
20.
J Behav Med ; 21(4): 315-36, 1998 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-9789163

RESUMEN

One hundred one males and 95 females referred for thallium stress testing were administered Spielberger's State-Trait Anger Expression Inventory (STAXI), the Ho scale cynicism items, the Cynical Beliefs Scale, and Bendig's Manifest Anxiety Scale. A subset of 53 males and 43 females was rated by their spouses by means of STAXI. Based on the thallium findings and their medical history, patients were classified either as healthy, or as having documented CHD, or as questionable. Patients' STAXI and cynicism measures were submitted to a principal-components analysis which yielded three factors: Impulsive Anger-out. Inwardly experienced anger, and Cynicism. The relationships between factor scores and documented CHD was determined by means of logistic regression analyses. Only Impulsive Anger-out correlated (positively) with CHD, but only when based on spouses' ratings and only in males (p < .01, RR = 3.13). Covarying traditional risk factors and cynicism did not attenuate this relationship. However, a significant relationship between Ho scale cynicism and CHD did not survive adjustment for traditional risk factors. Anxiety was not a risk factor for CHD.


Asunto(s)
Ira , Enfermedad Coronaria/psicología , Determinación de la Personalidad , Inventario de Personalidad , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Factores de Riesgo , Esposos/psicología , Personalidad Tipo A
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