View clinical trials related to Aging.
Filter by:The purpose of REACT project is to provide cost-effective way to promote physical activity and reduce sedentary time among older adults. This is done by examining the efficacy of activity tracker based intervention on wake-time physical activity, sedentary time, sleep and other health outcomes among recent retirees. REACT study will be the first randomized physical activity trial targeted to time window right after retirement.
This research project aims to determine whether supplementing with a mixture of the NAD+-precursors NA, NAM, and tryptophan can stimulate skeletal muscle mitochondrial function in physically compromised, elderly humans. Outcomes are related to mitochondrial function, energy metabolism, and physical function will be investigated.
The goal of this pilot and feasibility study is to investigate the effects of a short course of metformin therapy on a surrogate marker of cellular senescence and autophagy among adult patients with prediabetes. The overall hypothesis is that metformin will have beneficial effects on longevity and quality of life by inducing autophagy downstream of activating adenosine monophosphate-activated protein kinase (AMPK) and inhibiting mechanistic target of rapamycin (mTOR) through potential effects of reduced inflammation, reduced degeneration of muscle and tendon tissue, antineoplastic effects, reduced obesity and hyperglycemia, preserved cardiovascular functions, and/or the prevention of neurodegeneration (such as age-associated dementia). This pilot study will address the following aim: Demonstrate that metformin therapy will increase cellular autophagy as an inverse correlate of aging as measured by increases in Microtubule-associated protein 1A/1B-light chain 3 (LC3) scores. Hypothesis 1: In addition to beneficial effects on glycemia, body weight, and body composition, metformin therapy exerts beneficial effects on surrogate measures of autophagy and aging. Primary outcome: Increased levels of LC3 in leukocytes.
Background: The transition to long-term care facility can be a stressful and emotional event for the elderly. The evidences showed that the prevalence of depression and the cognition impairment were higher in the institutionalized elderly than the community dwelling elderly. It could affect the quality of life of the elderly and increase risk of mortality. Purpose: The aim of the study is to evaluate the effect of outdoor activities and sunlight exposure on depression, cognitive function, and quality of life among institutionalized elderly. Method: The design is a randomized control trial. Participants will be randomly allocated to experimental or control groups by block randomization. In the experimental group, participants will be encouraged to reduce time spent on bed and bedroom. Nurses, nurse aids or family will take participants outdoors and exposure their face, hands or arm to sunlight for 15-30 minutes a day, five days a week for three months (if the UV index is over 8 according to the forecast of Center Weather Bureau, the participants will be asked to stay inside). In the control group, the participants will receive routine care. The control group will neither be encouraged to stay outdoors nor limit the chance to exposure to sunlight. Expected outcome: The expected benefit of the research is to improve the depression, cognitive function, and quality of life of the institutionalized elderly.
Dysfunction of adipose tissue in obesity, inflammation and aging: mechanisms and effects of physical exercise and omega-3 fatty acids.
The purpose of this project is to conduct a randomized, controlled trial (RCT) to determine if choice of antihypertensive medication influences changes in functional status and other cardiovascular risk factors among older persons with hypertension when combined with physical exercise.
Emerging evidence from social neuroscience suggests that prefrontal cortex (PFC), insular and anterior cingulate cortex (ACC) regulate social and emotional responses to acute threats to social connectedness among young adults. Deficient neural reserve or overused neural compensation resulting from neurodegeneration is commonly observed in these frontal regions in old age. This aging-related "neural depletion" may have implications for how older adults respond to social threats, potentially increasing maladaptive emotional and social behavioral responses, such as social anxiety and social avoidance, which contribute to social disconnectedness. The central hypothesis is that cognitive deficits and associated aging-related 'neural depletion' in the frontal regions will contribute to maladaptive social-emotional responses to a social stressor -- social exclusion. Ultimately, maladaptive responses to acute social stress, such as social anxiety and avoidance, can compromise social connectedness by increasing social strain and isolation. The investigators have recently developed a neuroplasticity-based cognitive training program, called vision-based speed of processing (VSOP) training, targeting multiple aspects of cognitive capacity (e.g., attention, working memory and inhibition) and incorporating the speed component to improve the efficiency of these cognitive processes. VSOP training also targets several neural networks seeded in ACC and insular (default mode network) or PFC (the frontal-striatal network and central executive network). These networks also overlap with neural substrates of emotion regulation. Notably, VSOP training appears to improve emotion regulation, as depressive symptoms were reduced in older adults following VSOP training. Finally, the autonomic nervous system (ANS), critical to stress adaptation, is regulated by these frontal regions. The objective of the proposed pilot study is to provide proof-of-concept for the hypothesis that improvements in older adults' cognitive capacity, frontal regions' neural efficiency, and ANS function via the VSOP training will be associated with more adaptive social-emotional response to social exclusion, which, in turn, should confer longer-term protection for older adults' sense of social connectedness. Randomized Controlled Trial Design: 30 older adults will be randomly assigned to engage in 6-week VSOP training, or to an active control group. Differential changes from baseline to post-training in cognitive capacity, neural efficiency, and ANS function, and sense of social connectedness, will be compared between VSOP control groups. A social exclusion paradigm ('cyberball' task) will be conducted post-training to evaluate VSOP training effects on social-emotional responses to social exclusion, including anxiety and motivation for social affiliation.
Background: When people have a stroke, they often have difficulty moving their arms and hands. Transcranial magnetic stimulation (TMS) can improve how well people with and without stroke can move their arms and hands. But the effects of TMS are minor, and it doesn t work for everyone. Researchers want to study how to time brain stimulation so that the effects are more consistent. Objective: To understand how the brain responds to transcranial magnetic stimulation so that treatments for people with stroke can be improved. Eligibility: Adults ages 18 and older who had a stroke at least 6 months ago Healthy volunteers ages 50 and older Design: Participants will have up to 5 visits. At visit 1, participants will be screened with medical history and physical exam. Participants with stroke will also have TMS and surface electromyography (sEMG). For TMS, a brief electrical current will pass through a wire coil on the scalp. Participants may hear a click and feel a pull. Muscles may twitch. Participants may be asked to do simple movements during TMS. For sEMG, small electrodes will be attached to the skin and muscle activity will be recorded. At visit 2, participants will have magnetic resonance imaging (MRI). They will lie on a table that slides into a metal cylinder in a strong magnetic field. They will get earplugs for the loud noise. At visit 3, participants will have TMS, sEMG, and electroencephalography (EEG). For EEG, small electrodes on the scalp will record brainwaves. Participants will sit still, watch a movie, or do TMS. Participants may be asked to have 2 extra visits to redo procedures.
Sarcopenia, the loss in muscle mass with age, is associated with several negative health outcomes including cancer, stroke, cardiovascular disease and diabetes. This loss of muscle mass remains relatively steady following 50 years of age however it can be accelerated with periods of disuse associated with hospitalization, fracture or surgery of the hip or simply influenza. Also associated with periods of disuse, is a lack of energy intake as hospitalizations often result in undernourishment. The consumption of protein has been shown to stimulate muscle growth and therefore the investigators are wondering whether it is able to offset the loss of muscle mass associated with disuse. Therefore, the purpose of the study is to examine the effects of protein consumption combined with mild caloric restriction on changes in muscle mass and function during a period of disuse as well as during a period of recovery .
This is a randomized, double-blind, single-center, placebo-controlled Phase 2 trial enrolling 66 healthy elderly subjects (33 placebo and 33 AMAZ-02 administration) who are ≥65 and ≤ 90 years of age with evidence of low mitochondrial function. AMAZ-02 or placebo will be orally administered for 4 months.