Arlington Study of Healthy Aging
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 770
- 试验地点
- 1
- 主要终点
- Sense of Smell
研究概览
简要总结
The goal of this observational study is to learn about the mechanisms causing functional decline with age, using exercise science, neuroscience, and remote monitoring.
Specific aims include:
Aim 1: Advance knowledge of the biology of aging and its impact on the prevention, progression, and prognosis of disease and disability.
Aim 2: Determine the effects of personal and societal factors on aging.
Aim 3: Examine the influence of racial/ethnic and sex differences on the biology of aging and its impact on the prevention, progression, and prognosis of disease and disability.
详细描述
Subjects will be asked to participate in two study visits that may last up to 5 hours each. In some cases, additional visits may be needed to accommodate their schedule, and/or the schedule of the study team. All participants will provide informed consent prior to participating in the study procedures such as demographic, medical history, risk factor assessment; questionnaires; geographic information system analysis; blood pressure measurements; assessment of aerobic exercise capacity, cognitive function; olfactory testing; Dual X-Ray absorbency, fasting followed by venous blood draw, vascular function assessment; testing of muscle strength; short physical performance battery; functional mobility; and remote monitoring. The order of procedures and visits may change depending on participant, staff, equipment, and infrastructure availability/needs. Moreover, procedures may be repeated for data quality purposes, if deemed necessary by the investigators.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 80 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Phase 1: Young healthy men and women between 18 - 30 years of age, and older men and women between 50 - 80 years of age.
- •Phase 2: Men and women living in Tarrant County, Texas, between 50 - 80 years of age. In addition, the investigators will study up to 120 younger men and women, between 18-30 years of age, equally divided by race/ethnicity (same as above) and sex, to serve as reference controls.
排除标准
- •Phase 1: Clinical diagnosis of dementia; major depression (diagnosed by a physician), visual or auditory impairments that preclude neuropsychological testing or otherwise jeopardize the health and wellbeing of the participant during testing, non-ambulatory status (i.e. less than 10 m without mobility aid), shortness of breath while performing normal activities of daily living (walking through grocery store), body mass index > 45 kg/m2, heart failure or cardiomyopathy, acute coronary syndrome, primary valvular heart disease, severe gait disorder due to musculoskeletal disease or neurological motor deficit (e.g. severe osteoarthritis, lower limb amputation, Parkinson's disease, major stroke with motor sequelae), the use of neuroleptics, participation in a dedicated weight loss program within 6 months before the study; daily consumption of more than two alcoholic beverages; current treatment for cancer, and estimated life expectancy <4 years. Inclusion/exclusion will be verified using the demographics and medical history.
- •Phase 2: Clinical diagnosis of dementia; major depression (diagnosed by a physician), visual or auditory impairments that preclude neuropsychological testing or otherwise jeopardize the health and wellbeing of the participant during testing, non-ambulatory status (i.e. less than 10 m without mobility aid), shortness of breath while performing normal activities of daily living (walking through grocery store), body mass index > 45 kg/m2, heart failure or cardiomyopathy, acute coronary syndrome, primary valvular heart disease, severe gait disorder due to musculoskeletal disease or neurological motor deficit (e.g. severe osteoarthritis, lower limb amputation, Parkinson's disease, major stroke with motor sequelae), the use of neuroleptics, participation in a dedicated weight loss program within 6 months before the study; daily consumption of more than two alcoholic beverages; current treatment for cancer, and estimated life expectancy <4 years. Inclusion/exclusion will be verified using the demographics and medical history.
研究组 & 干预措施
Older Adults
结局指标
主要结局
Sense of Smell
时间窗: Baseline
Olfactory Testing will be assessed using the NIH Toolbox Odor Identification cards. After scratching a card and sniffing from each sample, respondents will be asked to choose the best match for each odor from pictures representing the odor sources.
Blood Pressure
时间窗: Baseline
Blood Pressure will be measured in the sitting position using an automated blood pressure monitor. After sitting blood pressure measurements, participants will be asked to stand up to measure standing blood pressure.
Street Address
时间窗: Baseline
Geographic information systems will assign a geocode to each participant's home address, providing latitude, and longitude coordinates based on the provided street address.
Ankle Brachial Index
时间窗: Baseline
The Ankle Brachial Index will be noninvasively assessed using the Smartdop XT device (Koven Technology, Inc.).
Pulse Wave Velocity
时间窗: Baseline
Arterial stiffness will be measured non-invasively with the Sphygmocor XCEL device (AtCor Medical).
Flow- mediated dilation
时间窗: Baseline
The flow-mediated change in brachial artery diameter (i.e. flow-mediated dilation; FMD), in response to a 5-minute period of arterial occlusion will be used to assess peripheral vascular function.
Steps taken
时间窗: Baseline
A wrist-worn continuous activity tracker (Fitbit wristband) will be worn by the subjects for 7 days.
Sedentary Time
时间窗: Baseline
A wrist-worn continuous activity tracker with heart rate monitor (Fitbit wristband) will be worn by the subjects for 7 days.
Medical History Questionnaire
时间窗: Baseline
Participants will complete health history questionnaires to gain a deeper understanding of their lived experiences and past medical history.
Sleep
时间窗: Baseline
A wrist-worn continuous activity tracker (Fitbit) will be worn by the subjects for 7 days to assess total sleep time, and sleep quality.
Cognitive Function
时间窗: Baseline
Cognitive function will be assessed using the NIH Toolbox Cognition Battery (NIHTB-CB), administered on an iPad or computer by a trained study team member.
Complete blood count
时间窗: Baseline
Venous blood will be drawn by a trained phlebotomist and/or nurse in the fasting state. Blood will be shipped to LabCorp for processing of the complete blood count.
Body Composition
时间窗: Baseline
Participants will undergo Dual X-Ray Absorbency (DEXA) to measure subcutaneous and visceral fat content.
Ambulatory blood pressure
时间窗: Baseline
A wrist worn continuous blood pressure monitor (Aktiia wristband) will be worn by the subjects for 7 days for the measurement of ambulatory blood pressure.
Exercise Capacity
时间窗: Baseline
Exercise Capacity will be assessed using the six-minute walk test.
Functional Mobility
时间窗: Baseline
Objective gait measurements will be obtained using a gait mat. Participants will complete 6 separate walks down the full length of the walkway; 3 walks at a preferred pace and 3 walks while performing different secondary tasks (i.e. dual-task gait) in a fixed order: 1. counting backward by ones, 2. naming animals, and 3. counting backward by sevens. Walking aids will be permitted.
Lower extremity function
时间窗: Baseline
Participants will perform the Short Physical Performance Battery (SPPB). The test includes walking, the sit-to-stand test and balance.
Grip strength
时间窗: Baseline
Grip strength will be measured following a standardized approach using a validated Jamar handgrip dynamometer (Model J00105, JAMAR Hydraulic Hand Dynamometer).
Bone Density
时间窗: Baseline
Participants will undergo Dual X-Ray Absorbency (DEXA) to measure bone density.
Interstitial glucose
时间窗: Baseline
A continuous glucose monitor that measures interstitial glucose will be worn by the subject for 7 days.
Blood lipids
时间窗: Baseline
Venous blood will be drawn and shipped to Labcorp for blood lipid analysis
Metabolic Panel (blood)
时间窗: Baseline
Venous blood will be drawn and shipped to labcorp for evaluation of the metabolic panel.
Apolipoprotein A
时间窗: Baseline
Measured by labcrop from venous blood draw.
Apolipoprotein B
时间窗: Baseline
Analyzed by labcorp from venous blood draw.
Lipoprotein A
时间窗: Baseline
Analyzed by labcorp from venous blood draw
Blood checmistry panel
时间窗: Baseline
Analyzed by labcorp from venous blood draw
HbA1C (blood)
时间窗: Baseline
Analyzed by labcorp from venous blood draw
High sensitivity C reactive protein (blood)
时间窗: Baseline
Analyzed by labcorp from venous blood draw
Genetic testing
时间窗: Baseline
Whole blood (approximately 25 ml) will be stored in special tubes that preserve genetic material in our -80ºC freezer. Genetic testing experiments, including targeted single variants, single gene testing, genetic panel testing, whole genome sequencing, chromosomal testing, gene expression and biochemical testing, may be performed on the samples.
次要结局
未报告次要终点
研究者
Michael Nelson
Associate Professor
The University of Texas at Arlington