View clinical trials related to Metabolic Disturbance.
Filter by:This study will determine if ingestion of 3 g/d betaine versus placebo for two weeks prior to a 60-km cycling time trial will improve performance, moderate exercise-induced gut permeability, and improve metabolic recovery.
This study aims to produce new evidence, specific to women, on the efficacy and mechanisms of exercise and diet for cardiometabolic risk reduction in pre and postmenopausal women. Using a 3-arm randomized controlled trial (RCT) with equal recruitment and stratification by menopausal status to 6 months of: 1) exercise following Health Canada guidelines; 2) the same exercise plus counselling to follow Canada's Dietary Guidelines to improve diet quality; or 3) stretching group, this study will answer the following questions: - How does the impact of exercise compare among each of the causal links between physical inactivity and cardiometabolic disease in women? - What is the effect modification of adding a diet quality intervention to exercise? - What is the effect modification by menopausal status? The investigators hypothesize that exercise adaptations will be: 1) largest peripherally, including Matsuda index (primary outcome), Homeostatic Model Assessment of Insulin Resistance (HOMA-IR), arteriovenous oxygen difference (avO2diff), and visceral fat, compared to centrally (stroke volume (SV), endothelial function, aortic stiffness), 2) blunted or absent in post vs premenopause; 3) enhanced by the addition of diet quality which will be essential or additive for Matsuda index, metabolic syndrome, Framingham cardiovascular disease (CVD) risk, cytokines and adipokines, thigh myosteatosis, muscle mass, peak oxygen uptake (VO2peak), 4) enhanced by adding diet quality in more outcomes postmenopause.
Glycaemic responses to fruit smoothies may depend on the food matrix (e.g., degree of processing and physical structure), ingestion rate, dose ingested and fibre content. Furthermore, the method of sampling could alter inferences. The aim of this project is to characterise how these factors affect the glycaemic response to a commercially available fruit smoothie. Participants will ingest 7 different test drinks in a randomised, crossover design with fingerstick capillary blood sampling alongside continuous glucose monitors. Test drinks will include a glucose reference (CONTROL), the commercial product matched for carbohydrate to CONTROL (PRODUCT), equivalent carbohydrate ingested as whole fruits (WHOLE), equivalent carbohydrate ingested as blended fruits (WHOLE), equivalent carbohydrate as the commercial product ingested slowly (SLOW), equivalent carbohydrate as the commercial product ingested with additional fibre (FIBRE), and the commercial product ingested in a dose typically bought (DOSE). These data will provide insight into how the food matrix and different patterns of ingestion can alter the glycaemic response to a fruit smoothie, and how the measurement method may alter interpretations.
This study will investigate the biological mechanisms linking sleep disruption by vibration and noise, and the development of cardiometabolic disease. In a laboratory sleep study, the investigators will play railway vibration of different levels during the night. The investigators will also measure objective sleep quality and quantity, cognitive performance across multiple domains, self-reported sleep and wellbeing outcomes, and blood samples. Blood samples will be analyzed to identify metabolic changes and indicators of diabetes risk in different nights. Identifying biomarkers that are impacted by sleep fragmentation will establish the currently unclear pathways by which railway vibration exposure at night can lead to the development of diseases in the long term, especially metabolic disorders including diabetes.
This is a pilot study in 10 men to test the hypothesis that perturbations in substrate flux and the circulating metabolic and pro-inflammatory milieus during a high-fat diet paradigm will modulate DNA methylation of genes in sperm associated with obesity and cardiometabolic dysfunction.
Two bioactive compounds, N-trans-caffeoyl tyramine (NCT) and N-trans-feruloyl tyramine (NFT), have been investigated for potential gut health benefits. The shells of hemp seeds are a rich source of NCT and NFT. The hypothesis for this project is that ingestion of a hemp fiber bar containing NCT and NFT will mitigate exercise-induced increases in gut permeability. This study will examine the efficacy of 2-weeks ingestion of a hemp fiber bar (high and low doses) in moderating exercise-induced gut permeability using a randomized crossover trial. Objective #1: To conduct a randomized crossover trial using placebo-controlled, double-blind procedures with 20 cyclists who will in random order ingest a hemp fiber bar supplement (high and low doses) or placebo each day for two weeks prior to an exercise challenge (2.25 hours of intensive cycling). Objective #2: To determine if hemp fiber bar supplementation attenuates exercise-induced gut permeability using several outcome measures including plasma lactulose to 13C mannitol (L:M) ratio and plasma intestinal fatty acid binding protein (I-FABP) as markers of gastrointestinal permeability and mucosal damage, respectively. Shifts in thousands of metabolites will be measured via untargeted metabolomics to provide additional gut permeability biomarkers and help reveal underlying mechanisms.
Intensive Care Unit Acquired Weakness (ICUAW) describes muscle weakness that occurs in around 40% of patients during an intensive care stay. The morbidity and mortality of these patients is significantly increased over a 5-year period. The aim of this study is to investigate the combined effect of early enteral high-protein nutrition and early muscle activation on muscle atrophy in critically ill patients. The study will include 40 patients (20 intervention, 20 observation) with requirement for enteral nutrition at time of inclusion. In the intervention group the maximum possible level of mobilization is carried out and muscles are activated twice a day using neuromuscular electrical stimulation (NMES). The nutrition plan of the intervention group is based on the applicable guidelines for intensive care medicine with exception of increased protein intake. The control group receives therapy without deviating from the standard according of the DGEM guideline. The study aims to show that the decrease in muscle mass is significantly less than in the control group (primary hypothesis) via ultrasound of the rectus femoris muscle and in case of given consent muscle biopsy. As secondary hypothesis it is examined whether the combination of early high protein intake and muscle activation improves muscle strength and endurance.
The goal of this clinical trial is to learn about the alterations insulin resistance and metabolic flexibility following a transition to an obesogenic lifestyle in fit young men. The main questions it aims to answer are: 1. Does the addition of excess carbohydrates when transitioning to a sedentary lifestyle promote insulin resistance in fit young men? 2. Does the addition of excess carbohydrates when transitioning to a sedentary lifestyle lower the body's ability to break down fats and carbohydrates in fit young men?
This research project aims at better understanding the early biological effects resulting from occupational exposure to complex Polycyclic Aromatic Hydrocarbon (PAH) mixtures. Current biomarkers used as part of biomonitoring campaigns are biomarkers of exposure, not numerous and poorly related to health effects. The aim of this study is thus to improve our understanding of biological consequences of such exposures, both in terms of proteins deregulation, metabolism deregulation and genotoxicity.
Coronary heart disease (CHD) is the leading cause of mortality worldwide. Every year, millions of people suffer its most adverse manifestation, an acute myocardial infraction (AMI). The majority of these patients present at least one of the standard modifiable risk factors (SMuRFs). These include smoking, hypertension, dyslipidemia, and diabetes mellitus (DM). However, emerging scientific evidence recognizes a clinically significant proportion of patients presenting with life-threatening AMI without any SMuRF (SMuRF-less patients). This proportion of patients with ACS without SMuRF appears to be increasing during the last two decades and has recently been reported as high as 20% (of total AMIs). To date, there are no scientific data capable of highlighting specific risk factors-biomarkers responsible for the development of AMIs SMuRF-less patients. Therefore, two groups of patients with AMI (with SMuRFs vs SMuRF-less) will be compared regarding their clinical, laboratory and imaging (echocardiographic and angiographic) profile, and possible predictive factors leading to SMuRF-less AMI will be evaluated. On the basis of the above, the aim is to prospectively analyze a cohort of well-characterized patients with AMI. The rationale of the study is to investigate potential correlations between metabolic profile of patients and SMuRF-less AMI. This could lead to the development of predictive risk stratification algorithms for patients without SMuRFs and coronary artery disease.