View clinical trials related to Sarcopenia.
Filter by:In the present study the investigators aim to determine whether leucine supplementation can augment muscle mass and strength and improve body composition in healthy elderly men
This intervention study tests training methods to stabilize or improve functionality in the high risk group of prefrail elderly persons.
In the present study the investigators aim to determine whether protein supplementation can augment the response to a 12 week resistance training program in healthy elderly men.
The purpose of this study is to examine whether adding the basic salt potassium bicarbonate to the diet will have a positive effect on how dietary protein affects your bone and muscle.
To reach the goals of living longer in better medical conditions, many countries reach the same conclusion: new strategies have to be developed to avoid, or at least limit, the effects of age; this requires a better knowledge of the mechanisms of aging. Our project focuses on the loss of muscle mass associated with aging, called sarcopenia. Sarcopenia unavoidably leads to impaired mobility and poor balance, which contributes to loss of functional autonomy and to increased prevalence for severe falls. Skeletal muscle also plays a central role as a reserve for energy and amino acids. Hence, sarcopenia further triggers severe side metabolic effects such as frailty among elderly persons. The precise mechanisms of muscle aging are still mostly unknown, although many theories have been proposed. The present study aims at better understanding the mechanisms of skeletal muscle loss associated with aging. Using muscle biopsies from young and old subjects, the differential expression profiles of mRNA will be obtained through chips that will evaluate more than 39000 transcripts. On the same samples, proteomic analyses will involve two complementary approaches: (1) bidimensional electrophoresis (2DGE) coupled to mass spectrometry (MALDI-ToF) for dominant proteins; (2) Western-blot (more than 800 antibodies) targeting regulating proteins not detectable using 2DGE. Complementary histological studies (immunohisto-fluorescence, confocal microscopy) will specify the localisation of the major biomarkers in the muscle biopsies. The results of that research will have applications in the medium term and will lead to nutritional interventions to modulate specific metabolic pathways and improve the quality of life in the elderly.
Muscle loss with aging is a significant contributor to disability in older people. Our general hypothesis is that loss of muscle with aging, known as sarcopenia, may be due to inability of muscle to grow in response to insulin. Our goal is to determine the mechanisms underlying this age-related insulin resistance of muscle proteins, which will allow us to define in the future specific interventions to target this defect and provide the scientific basis for the prevention and treatment of sarcopenia.
Aging is associated with the loss of lean muscle mass, termed sarcopenia. Food intake and in particular the ingestion of protein or amino acids has been shown to be a powerful stimulus to promote net muscle protein anabolism. However this anabolic response following a meal-like protein bolus seems to be blunted in the elderly as compared to young adults. The first aim of this proposal is to investigate the post-prandial muscle protein synthesis rates in young and elderly men in response to a meal-like protein bolus after a period of rest or physical activity (study A). The rest trial (REST) will act as a proof-of-principle study to examine the blunted protein synthetic response in the elderly, and as a control trial in comparison with the exercise trial (EXC) to establish the surplus value of physical activity prior to protein intake on muscle protein synthesis. The second aim of this proposal is to determine the surplus value of an increased quantity of the ingested protein bolus (study B). Large amounts of protein (40 and 60 g) will be compared to a meal-like amount of protein (20 g) as a means to maximize plasma amino acid availability and/or to stimulate muscle protein anabolism. The third aim of this proposal is to study the differences in quality of the ingested protein bolus (study C). Instead of significantly increasing the quantity of the protein bolus, we will also apply a more practical approach to augment skeletal muscle protein synthesis rates; modifying the digestibility or amino acid composition of a meal-like protein bolus.
A study to evaluate the safety, tolerability, and efficacy of MK-0773 in women with sarcopenia (loss of muscle mass).
The purpose of this study is to determine whether a higher-than-replacement dose of testosterone and finasteride can be combined to safely increase muscle strength in older men who have a low blood concentration of testosterone.
We examined whether creatine monohydrate (CrM) and conjugated linoleic acid (CLA) could enhance strength gains and improve body composition (i.e., increase fat-free mass (FFM); decrease body fat) following resistance exercise training in older adults (> 65 y). Our study hypothesized that administering CrM and CLA would yield greater strength and body composition benefits than the placebo group over the six months of resistance exercise