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The present study will investigate the effect of acute exercise on fasting and postprandial risk markers for coronary heart disease (CHD) in healthy male cigarette smokers and non-smokers. Participants will complete two, 2-day trials in a random crossover design separated by an interval of at least 1 week. On day 1, participants will rest (control) or complete 60 minute of treadmill exercise at 60% of maximum oxygen uptake (exercise). On day 2, participants will rest and consume two high fat meals (breakfast and lunch) over an 8-h period during which 13 venous blood samples and nine blood pressure measurements will be taken at pre-determined intervals. It is hypothesised that men who smoke cigarettes will exhibit impaired fasting and postprandial metabolic risk markers compared to non-smokers, but a single bout of exercise will be equally, if not more, efficacious for improving the CHD risk factor profile in smokers than non-smokers.
Cardiovascular risk factors and disease burden has been showed to affect more deeply to poorer populations. People who live in slums are the most vulnerable subgroup in the populations where, paradoxically scarcity of data exists on risk factors and cardiovascular disease burden. Our study aim to describe the prevalence of cardiovascular risk factors and cardiovascular disease burden in a representative sample of an urban slum of Buenos Aires city, using validated questions from the National Risk Factors Survey (edition 2013). Also, the investigators will measure blood pressure and cardiac rate to all study participants.
We compared the effects of 8 weeks of aerobic exercise only, resistance exercise only, or a combination of both on blood pressure in overweight or obese middle-aged adults with elevated blood pressure. Participants engaged in supervised exercise sessions 3 times per week for 60 minutes each session. Outcomes were assessed at baseline and after the 8-week intervention. Extra-intervention physical activity and diet were also assessed.
This study evaluates if promotion of a normocaloric and balanced diet and of physical activity, through an individual- or group-based lifestyle intervention of 12 months, may affect anthropometric measurements and metabolic profile in obese children.
This study, "Fitness Intensive Therapy (Get FIT) to Promote Healthy Living in Older Adults", will test a mobile-health based intervention which includes use of a Fitbit activity tracker for 3 months, a smartphone application that tracks daily food intake, and one 45 minute counseling session to create personal goals and provide patient education by a health coach; versus Get FIT+ (the same items) plus personalized text messages focusing on participant's activity and nutrition progress as monitored in the app, from the health coach for 3 months. We will measure the impact on participant's diet, physical activity, clinical outcomes, psychosocial well-being, and engagement.
The purpose of this trial is to investigate the metabolic and cardiovascular health in children aged 6-8 years born after in-vitro fertilization with frozen embryo transfer
The primary prevention of cardiovascular disease is an unresolved health problem. A sedentary lifestyle and a low cardiorespiratory condition both increase the risk of cardiovascular disease, at a similar extent as that promoted by traditional risk factors, such as smoking, high blood pressure or dyslipidemia. The scientific evidence regarding the effect of the promotion of an active lifestyle on primary cardiovascular prevention is limited. Several studies have shown that structured training programs (TP) are effective at short term, but at the medium or long term their efficacy is still unknown. There are very few randomized controlled trials, and there are almost no studies conducted in the primary care setting which analyze the long-term effects of this type of program on primary cardiovascular prevention. The investigators performed in primary care a previous quasi-experimental study without control group demonstrating the short-term effectiveness in the improvements of both physical condition and in the practice of physical exercise of this TP, the shortest so far analyzed in primary care. With the current study the investigators also want to demonstrate its short-term efficacy in the promotion of moderate-high physical activity and in the practice of physical exercise, through a high-evidence design such as a randomized clinical trial with a control group, also the extension of such efficacy in the medium and long term. Objective: To determine the efficacy of a supervised 2 month TP on short-term (1 month post-TP), medium-term (6 months post-TP) and long-term (12 months post-TP) promotion of moderate-high physical activity and practice of physical exercise, in a sedentary population with high cardiovascular risk, attending primary care centres. Methodology: A parallel, randomized, intervention study, with a control group. Inclusion criteria: Men and women of an age between 35 and 70 years, attending a primary care center in hospital reference area, with high cardiovascular risk. Sedentary lifestyle defined by a score <2 in the brief Physical Activity Questionnaire for care consultations primary adapted to measure the frequency of physical exercise and with a total result in the International Physical Activity Questionnaire (IPAQ)-long version ≤1500 METs x minutes/week, who agree to participate and commit to compliance with the program. Participants were randomized (automated list generation) to a control group, consisting in conventional management or to an intervention group (TP 2 months, 3 times / week). Both groups received an educational talk about cardiovascular risk, healthy diet habits and cardio-healthy exercise at the beginning of TP. Assessments were performed at baseline, and at 3, 8 and 14 months. OUTCOMES: 1. Main outcome measure: differences between groups in the proportion of participants with an "Effective response in Physical Activity ". This effective response was considered if there was an increase ≥ 240 METs x minutes / week in the moderate-high physical activity (measured by IPAQ-long version) in the final evaluation. 2. Secondary outcome variables: differences between groups in the change in: 1. Physical exercise: quantitatively (measured by the sum of the results obtained in items 22-25 of the IPAQ-long version), frequency (Physical Activity Questionnaire for care consultations primary adapted to measure the frequency of physical exercise), and intention (Questionnaire of Stages of Change of Exercise (QSCE)-Short Form). 2. Global physical activity (measured with the total result in the IPAQ-long version). 3. Physical condition: ergometric variables (Peak Oxygen Consumption, exercise duration, anaerobic threshold moment)) and 6 Minute Walk Test. 3. Other efficacy and safety variables: differences between groups in the changes in: 1. Anthropometric variables. 2. Blood pressure. 3. Biochemical parameters. 4. Mediterranean diet (simplified version of the questionnaire ¨Adherence to the Mediterranean Diet¨). 5. Quality of life (questionnaire SF36-long version). 6. Mood (Beck depression index).
Clinical Trial Phase III, experimental, simple blind, randomized with two treatment groups, multicentric, longitudinal, to evaluate the therapuetic efficacy to dislipydemias in mexican adult population. This trial includes homogeneus populations that could be comparable by their disease condition, biologic characteristics and sociodemographics characteristics. 2 Treatment groups: Experimental Group: Oral Administration of L-carnitine (1g) + Oral Atorvastatin (20mg), every 24 hours for 6 months. Active control group: Oral Administration of Atorvastatin 20mg every 24 hours for 6 months. Sample Size: 120 subjects, females or males between 35 to 75 years old. Laboratory tests: Hematic biometry, quimical blood components, electrocardiogram and pregnancy urinary test.
This study aims to assess the salt sensitive blood pressure response to dietary salt load compared with radiological markers of salt handling.
Cardiovascular disease (CVD) afflicts nearly one-third of the adult population with all races and ethnicities represented in CVD prevalence. Unfortunately, a disparity exists such that the black population (BL) is disproportionately affected compared to other groups, including the white population (WH). While the underlying cause of this disparity is multifactorial, vascular dysfunction (i.e., impaired vasodilation and/or augmented vasoconstriction) is a key contributor. As has been previously observed, BL exhibit a heightened vasoconstrictor response to both pharmacological (e.g., alpha-adrenergic receptor agonists) and environmental (e.g., cold pressor test) stimuli compared to their WH counterparts. Additionally, reactive oxygen species (ROS) and the subsequent reduction in nitric oxide (NO) bioavailability may partially mediate this response. Our laboratory has recently observed (UTA IRB 2016-0268) that the small blood vessels in the skin (cutaneous microvasculature) in BL, but otherwise healthy individuals, produce an impaired blood flow response to local heating when compared to age-, body mass index (BMI)-, and gender-matched WH. However, pre-treatment of the cutaneous microvasculature with various antioxidants abolishes this skin blood flow difference. These antioxidant drugs inhibit possible sources of ROS, which, as mentioned, maybe mediating the heightened vasoconstrictor response in BL. However, this has not been investigated in this population and thus remains unknown. Therefore, the purpose of this study proposal is to test the following hypotheses: 1) BL will have a greater reduction in cutaneous blood flow in response to local administration of Norepinephrine (alpha1-adrenergic and alpha 2-adrenergic receptor agonist) relative to WH. 2) This greater reduction in the BL population will be related to elevated oxidative stress and subsequent reduction in bioavailability of the potent vasodilator Nitric oxide.