View clinical trials related to Aging.
Filter by:Calorie restriction extends life span and prevents aging-related diseases in several species. Odorants from live yeast restrain the beneficial effects of calorie restriction in Drosophila Melanogaster. The investigators hypothesize that visual and odorous food stimuli impact the neuroendocrine and metabolic response to starvation in healthy humans. In this randomized cross-over intervention study 12 healthy, young men will fast twice for 60-hours in the presence or absence of food-related visual and odorous stimuli. At baseline and on the last morning of each intervention an oral glucose tolerance test (OGTT) will be performed. During the OGTT blood is sampled and hypothalamic neuronal activity is measured by functional MRI.
Dietary intervention to prevent sarcopenia in elderly people. The objective of this study is to test whether combined nutrient intake plays an important role in stimulation of the muscle protein growth in elderly people; and whether it represent effective strategies to overcome the impaired muscle protein synthesis in elderly when compared with young subjects.
A major means whereby oxidative stress promotes aging-related disease is by activating inflammatory pathways. Decreasing oxidative stress and inflammation should ameliorate many of the problems associated with aging, including vascular dementia, Alzheimer's disease, osteoporosis, muscle wasting, insulin resistance, type 2 diabetes, and metabolic syndrome. Animal and human studies have demonstrated that consumption of vitamin D and phase 2 protein inducers decrease oxidative stress and associated inflammation. The flax lignan secoisolariciresinol diglucoside (SDG) is metabolized to enterolactone, a potent phase 2 protein inducer. Animal and human studies have shown that consumption of flax seed or its component SDG decreases hypertension, serum cholesterol, atherosclerosis, the growth of experimentally-induced cancers as well as metastases of human breast tumours implanted into nude mice, and delays the development of type 2 diabetes. Vitamin D plays a role in modulating inflammation, enhancing immunity (while suppressing autoimmune injury) and exerting control over cell differentiation. Adequate levels of vitamin D also appear to promote better glycemic control. The investigators predict that consumption of SDG in persons with adequate vitamin D status will decrease oxidative stress and associated inflammation. If this hypothesis is upheld, this research has the potential to greatly decrease healthcare costs while allowing healthier aging.
The trial will test whether the Alive email-delivered health behavior program can improve subjects' physical activity, fruits and vegetables and saturated/trans fats and added sugars.
The objectives of this study are to use a nutritional change in the diet to improve gut health in older people. Ageing can result in major changes in the composition and activities of the bacteria in your gut, leading to a higher incidence of gastrointestinal infections, decreased intestinal motility and impaired bowel function as people get older. This can result in constipation or diarrhoea, increased levels of inflammation and reduced immune response to infection. Therefore, individuals aged 65 or over could benefit from safe and effective interventions that maintain a healthy balance of gut bacteria as well as restoring the immune response. Bacteria in the gut are known to promote health. Eating foods containing beneficial bacteria for example (probiotics) or food which contain substrates for the bacteria to grow on (prebiotics) can improve the balance of gut bacteria. The investigators will use a synbiotic with known anti-inflammatory properties, comprising a probiotic Bifidobacterium longum strain and inulin (Synergy 1), The synbiotic has been previously shown to be beneficial in reducing inflammation and to increase levels of beneficial bacteria in the gut in two studies in patients with inflammatory bowel disease. The investigators would now for these reasons, like to determine the effects of our Synbiotic on the gut bacteria and immune function of older individuals in a double-blinded, crossover, placebo controlled, randomised investigation involving 40 volunteers for three months. The trial is designed so that participants will be assigned to receive the Synbiotic preparation or the placebo for the first four weeks, this will be followed by four weeks without treatment, and then they will switch to the opposite preparation for another four weeks.
The American Heart Association (AHA) and American College of Sports Medicine (ASCM) recommend older adults (50≤ age ≤ 80) perform at least 30 minutes of moderate-intensity aerobic exercise on most days ( ≥5 days) of the week. This suggestion arises, in part, from data supporting that regular physical activity reduces the risk of adverse cardiovascular events A portion of these benefits may be from reductions in the incidence and severity of cardiovascular risk factors, including diabetes mellitus, obesity, and hypertension. While this recommendation for physical activity has been in existence for almost 15 years, the rates of obesity in the United States continue to rise and prevalence of sedentarism remains at best unchanged. Researchers have been engaged in investigating novel interventions to designed increase physical activity to reach the recommended activity targets. One promising intervention involves use of inexpensive, easy to use pedometers that allow individuals to objectively track the number of steps taken during a set period of time. Recent data suggest that an average of 10,000 steps/day as measured by a pedometer accurately estimates the activity levels recommended by the AHA, ASCM, and US government public health guidelines. While the benefits of habitual exercise are well-documented, there are no data that demonstrate current recommendations for moderate physical activity in older adults by the ASCM, AHA, and US public health guidelines reduce the risk of adverse cardiovascular events. Interestingly, prior work indicates that pedometer-centered interventions can increase physical activity, suggesting that this type of intervention could potentially lead to cardiovascular benefits. Using validated surrogate markers of cardiovascular risk including brachial artery endothelial function, tonometric measurements of vascular stiffness, and measurements derived from transthoracic echocardiography, we will determine whether increasing the physical activity of sedentary adults to an average of 10,000 steps or more/day translates into improvements in cardiovascular health. This will be determined in the context of a randomized control trial employing a control group, a study group that uses a pedometer alone, and an intervention that couples a pedometer with internet-based motivational messaging software demonstrated in our preliminary data to encourage older adults to reach and exceed the 10,000 steps/day goal.
We are exploring a unique weight-training program for men and women 65 years or older that emphasizes high speed training. We believe that the speed at which muscles move may be more important to the performance of functional tasks than how strong the muscles are. We are comparing velocity training with traditional strength training to determine which method has the greatest effects on muscle strength, speed of movement, functional performance and physical disability. We believe that higher speed training will improve these measures to a greater extent than simply training for increased muscle strength. Aging also results in loss of bone mass, which increases the risk for falls and fractures. Strength training also has been shown to maintain bone mass in the elderly, but no studies have examined high velocity resistance training and maintenance of bone mass. We believe it is important to examine this aspect of velocity training before recommendations can be made.
The purpose of this study is to find the best tests to use to investigate the differences between older and younger people with HIV disease. Test to be included will measures of memory, learning, activity levels, sleep patterns, emotional well-being and sexual health.
Experimental design overview The proposed project is a prospective experimental RCT study design. Independent old adults(age 65 years old and older) who do not suffer from balance problems willing to participate in the study will be tested before and after water consumption to explore whether there are differences in balance control as a result of dehydration.
Resistance training as well as creatine supplementation may be beneficial for cognitive function, such as memory and attention. Therefore, the investigators speculate that resistance training combined with creatine supplementation would promote additive benefits on cognitive function in elderly women.