Personalized Smartphone-assisted Coaching System to Improve Glucose Homeostasis in Adults With Prediabetes...
PrediabetesHyperglycemia3 moreSweetch is a personalized mobile-health platform coaching system (mobile phone app) designed to promote adherence to physical activity guidelines for people with prediabetes.
Use of Track Health Function of the MyHealthevet Personal Health Record
Prediabetic StateThis study was a pilot 3-month clinical trial that investigated the feasibility, effectiveness, and acceptability of using the Track Health function of the Veterans Health Administration's patient health record for effecting a more positive physical activity (PA) and dietary intake lifestyle in a sample of 38 overweight and obese Veterans with prediabetes. Baseline and three-month post-intervention outcomes were measured in two main domains: objective (e.g., weight) and subjective (e.g., self-efficacy).
Skeletal Muscle Diacylglycerol and Sphingolipids - Impact of Localization and Species on Insulin...
Diabetes MellitusType 22 moreThe rationale for the proposed research is that elucidating changes in localized diacylglycerol (DAG) and sphingolipid species that predict insulin sensitivity will reveal specific localized lipids to target in therapeutics for type 2 diabetes. To attain the overall objective, the investigators propose three specific aims: 1. Identify the influence of sarcolemmal DAG and sphingolipids on cell signaling and insulin sensitivity before and after insulin sensitizing lifestyle interventions. Strong preliminary data shape the hypothesis that sarcolemmal 1,2-disaturated DAG and C18:0 ceramide species will decrease after insulin sensitizing lifestyle interventions, leading to less Protein kinase C (PKC) and Protein phosphatase 2A (PP2A) activation, and enhanced insulin signaling. Skeletal muscle DAG and sphingolipid isomers, species, localization, and de novo synthesis will be measured before and after diet-induced weight loss or exercise training interventions in obese men and women. Insulin sensitivity will be measured using insulin clamps, and muscle lipids using Liquid Chromatography Mass Spectrometry (LC/MS). 2. Determine the impact of mitochondrial/ER (endoplasmic reticulum) DAG and sphingolipids on mitochondrial function and ER stress in vivo, before and after insulin sensitizing lifestyle interventions. The investigators hypothesize, again based on preliminary data, that mitochondrial/ER sphingolipids will decrease, yet DAG will increase after insulin sensitizing lifestyle interventions, and each will associate with increased insulin sensitivity. Changes in sphingolipids will relate to increased mitochondrial function, less ER stress, reactive oxygen species (ROS), and acyl-carnitine formation, while changes in DAG will relate to increased mitochondrial content and dynamics. 3. Identify the effect of exogenous DAG and sphingolipids on mitochondrial function in vitro, before and after insulin sensitizing lifestyle interventions. The working hypothesis is that DAG and sphingolipids will reduce mitochondrial respiration and increase ROS and acyl-carnitine content, but will be attenuated after endurance exercise training. The proposed research is innovative because it represents a substantive departure from the status quo by addressing cellular compartmentalization of bioactive lipids. The investigators contribution will be significant by identifying key species and locations of DAG and sphingolipids promoting insulin resistance, as well as mechanisms explaining accumulation that could be modified by insulin sensitizing therapeutic interventions.
Improving Physical Activity Through a mHealth Intervention in Cardio-metabolic Risk Patients
Diabetes MellitusType 24 moreThe goal of this study is to explore the effects of FeatForward on physical activity and cardio-metabolic risk factors. The study will be implemented as a 2-arm randomized controlled trial (RCT) comparing the effects of FeatForward in patients assigned to use the application versus a control group who will not use the app over a 6-month follow-up period. The investigators hypothesize that subjects using FeatForward will be more physically active and will achieve greater improvements in their cardio-metabolic risk (CMR) factors than a usual care control group that will not use the app over a 6-month period.
The Effect of A-lipoic Acid (ALA) on Fatty Acid-induced Impairment of Glucose-stimulated Insulin...
Type 2 DiabetesPrediabetesChronically elevated free fatty acids impair insulin sensitivity and insulin secretion (ie lipotoxicity) by a combination of oxidative stress, endoplasmic reticulum (ER) stress and inflammation. This study will test whether alpha-lipoic acid, which has potent antioxidant and anti-inflammatory properties, prevents or ameliorates lipotoxicity.
The Avoiding Diabetes Thru Action Plan Targeting Pilot Randomized Control Trial
PrediabetesThe goal of this randomized control trial is to study the impact of an electronic health record embedded tool's ability to facilitate shared provider-patient goal setting to promote lifestyle behavior change and prevent diabetes in primary care.
Evaluation of Lifestyle Interventions to Treat Elevated Cardiometabolic Risk in Primary Care
ObesityPre-diabetes1 moreThe purpose of the E-LITE Study is to evaluate the feasibility and potential effectiveness of two lifestyle interventions in a community based primary care setting. The study aims to assess how changes in diet, exercise, and behavioral self-management affect weight and related risk factors for adults at risk for diabetes and cardiovascular disease.
The Influence of Glucose Flux on Fat Synthesis in a Whole Body Calorimeter
Type 2 DiabetesObesity1 moreThe study is carried out to find out the inclusion of high and low glycaemic index foods to daily meals and how they impact 24 hour blood glucose fluctuations and energy regulation.
Effects of Standing on Glycemia in Prediabetic Adults
PrediabetesThe study is a crossover, pilot trial examining the acute effects of standing on blood sugar in prediabetic, working adults. Participants will complete oral glucose tolerance testing, once while sitting and once while standing. They will also wear a continuous blood sugar monitor once while sitting at their desk for a week and once while using their desk as a sit-stand desk with a goal of standing intermittently for at least half of the work day. Physical activity levels will be measured with an accelerometer. The primary study hypothesis is that blood sugar will differ between the sitting and standing conditions for each of the tests performed.
Role of Slowly Digesible Starch on Diabetes Risk Factors
PrediabetesThe purpose of this study is to determine the effect of a slowly digesting starch on gut bacteria, sugar and fat metabolism, hunger hormones, and body fat in people with pre-diabetes.