View clinical trials related to Aging.
Filter by:Aside from aging, numerous factors increase the risk for developing cardiovascular disease (CVD) including diet and nutrition. High-fat meal consumption induces postprandial vascular endothelial dysfunction and other cardiometabolic disturbances (e.g. dyslipidemia and hyperglycemia) in normal weight individuals and is exacerbated in overweight/obese individuals. These postprandial responses are likely largely due to activation of pro-inflammatory and pro-oxidant pathways. Given that much of the day is spent in the postprandial state, this may further impair cardiovascular health in aging overweight/obese individuals. Interventions that attenuate these responses are needed. Red beetroot (Beta vulgaris L.) is an excellent source of bioactive compounds including nitrate, flavonoids, phenolic acids, betalains, carotenoids, and ascorbic acid. These bioactive compounds and their metabolites have been shown to have antioxidative, anti-inflammatory, and cardiovascular-protective effects. These effects, particularly the cardiovascular-protective effects, have been primarily attributed to its high content of nitrate since it is converted to nitric oxide independent of the vascular endothelium via the enterosalivary nitrate-nitrite-nitric oxide pathway. However, red beetroot juice contains a number of other potentially beneficial bioactive compounds and few studies have aimed to determine whether these compounds work independently, additively, or synergistically in exerting these effects. Given the findings of previously conducted research in the broad area of red beetroot juice consumption and human health, it can be suggested that: 1) acute red beetroot juice consumption may prevent or attenuate the adverse postprandial responses to consuming a high-fat meal in individuals with exaggerated responses; and 2) chronic consumption of red beetroot may improve underlying factors contributing to these exaggerated responses. Accordingly, this project aims to: 1) investigate the efficacy of acute and chronic whole red beetroot juice consumption compared with its bioactive components in attenuating postprandial vascular endothelial dysfunction and adverse cardiometabolic responses to a high-fat meal; and 2) to gain insight into the underlying mechanisms responsible.
The purpose of this study is to determine the respective roles of aging and schizophrenia in the regulation of metamemory using a sentence construction strategy. 4 groups will be necessary to comparison: Adult patients (18-45 years) Adult controls (18-45 years) Aged patients (≥ 55 years) Aged controls (≥ 55 years) The effects of age and the disease could lead to interaction in regulating metamemory. The effect of age would be aggravated by the disease.
The purpose of this study is to investigate whether a comprehensive group education combined with a lifestyle "activation" program that includes (a) sleep hygiene course, (b) physical activity promotion, and (c) bright light therapy, can improve both sleep quality and cognitive function among 96 community-dwelling older adults.
The purpose of this study is to assess the efficacy of supplementation with the Nicotinamide Adenine Dinucleotide (NAD+) precursor compound, Nicotinamide Riboside (NR), for improving physiological function (vascular, motor, and cognitive) in healthy middle-aged and older adults.
To investigate the effects of Thai dance exercises over 6 weeks on functional outcomes and incidence of fall in community-dwelling older individuals. To compare effects of exercise training on hard, soft and sand surfaces in community-dwelling older individuals
Using stable isotope methodology, investigators will determine the postabsorptive and postprandial muscle protein synthetic response in 60 female adults (Age 50-79, BMI: <30 kg/m2) immediately after an acute bout of resistance exercise. Participants will be divided in to 5 groups of twelve women (n=12). Each group will receive a different protein beverage or placebo to consume following the resistance exercise training. Group 1 will consume a beverage consisting of whey protein; group 2 will consume whey protein supplemented with additional leucine; group 3 will consume whey protein supplemented with additional leucine and hydrolyzed whey peptides; group 4 will consume whey protein supplemented with additional leucine and citrulline; group 5 will just consume water. During the testing, blood and muscle samples will be collected.
This study will investigate how resveratrol (phenol present in red grapes, wine and peanuts) can improve heart muscle function and ability of arteries to dilate in response to an increase in blood flow in adults 65 years of age and older. Additionally, investigators will look at how resveratrol can improve functioning of cells (cellular house-keeping) which can be related to cardiovascular function.
The age-associated loss of lean mass is a defining parameter of sarcopenia and may lead to various negative health outcomes such as impairment of physical performance and disability. Furthermore sarcopenia is considered to be one of the main factors in the pathogenesis of the frailty syndrome. However, for clinical use and for treatment and prevention strategies, reliable diagnostic criteria and cutpoints based on clinically relevant thresholds are indispensable. This topic has recently been addressed by the Foundation for the National Institutes of Health Sarcopenia Project which identified cutpoints for appendicular lean mass (ALM) below which older adults had a higher likelihood of clinically relevant weakness reflected by low grip strength. Moreover, a low ALM-to-body mass index (BMI) ratio (<0.789 men and <0.512 women) was found to be associated with increased likelihood for mobility impairment. In this context, the aim of this study is to study the prevalence of sarcopenia in a sample of community-dwelling frail and pre-frail older adults.
This study contains two pilot studies: 1) one study will investigate practice dosage of a postural stepping task in healthy young individuals in order to determine an operational definition of performance plateau, and 2) the other study will investigate whether practicing beyond reaching a performance plateau improves learning of a postural stepping task in healthy older adults, compared to discontinuing practice immediately after reaching a performance plateau. The investigators hypothesize that the group that continues to practice beyond reaching their performance plateau will learn and retain the motor task better than the other group.
Saint Luke Home (SLH) is a home for low-income seniors who are ≥ 55 years and in need of basic living help in Tucson, Arizona. Reports shows that emergency calls are made from SLH (64 residents) around 60 times each year with emergency department (ED) visits and hospital admissions that follow. In 2014, a total of 70 calls were made, and in 2015, 49 calls. The Director, who is a nurse by training, and staff report that many of these calls are related to medications and may be avoidable. Therefore, we believe we can make a difference and decrease emergency calls, ED visits and hospitalizations that can be avoided with a program to teach the elders and staff at SLH. The program is called Preventing Avoidable Admissions Among Assisted Living Elders (PA4LE) and will consist of a 2-hour session every two weeks including home or clinic visits (elder preference), educational sessions, and staff training.