View clinical trials related to Intermittent Fasting.
Filter by:Time restricted feeding (TRF) has been emerging as a potential weight loss strategy that avoids major dietary changes but achieves strong effects. It also improves insulin sensitivity through increased human growth hormone. This effect helps to improve the root cause of weight gain and has additional benefits for women with PCOS.
The objective of this study is to compare the body composition and physical performance effects of HIIT, with or without intermittent fasting intervention in active women. Fourteen active normal weight women aged 18-35 participated in the study. The effects of 2x8 weeks without (HIIT) or with (HIIT+IF) intermittent fasting caloric restriction (20% reduction in weekly energy intake) on body composition and performance (Hand-grip strength, Counter movement jump, Wingate Anaerobic 30 s Cycling Test), were compared. There were two weeks in between both phases when they did not perform the scheduled activity, so as not to alter the experimental phase.
This is a cross-over intervention study designed to evaluate how four weeks of time restricted feeding (16 hours fasting and 8 hours feeding), compared to four weeks of a more traditional eating pattern (12 hours fasting and 12 hours feeding), affects resting energy expenditure, subjective and biochemical markers of satiety and hunger, body composition, cardiovascular health, substrate utilization and fitness in male competitive runners.
The goal of this study is to determine how effective repeated fasting over 26 weeks (6 months) is at improving risk parameters that are surrogate endpoints for cardiovascular diseases, metabolic dysregulation and cognitive impairments. Subjects will be randomized 1:1 to water-only fasting or to their ad libitum usual diet, with randomization performed within strata based on fasting history (≤180 hours or 181-720 hours of total fasting for >12 consecutive hours per episode in the previous two years). Subjects will be assessed at 4, 13 and 26 weeks following randomization.
The Danish Food Administration recommends eating three main meals and three small meals a day in order to maintain a healthy lifestyle. However, there is little research to support this concept- moreover, many studies shows that fasting can have a positive impact on our health. HYPOTHESIS AND PURPOSE The investigators hypothesize, that the number of meals per day in order to maintain a healthy lifestyle will not differ in normal weight subjects. The investigators will include 1) healthy, normal weight subjects. The investigators will study the effects of two daily meals. More specifically, the investigators want to better understand how the body reacts to long-term, intermittent fasting (14 h /day for 4 weeks). The investigators will assess cognitive function, dietary intake, appetite regulation, fitness, glucose and insulin responses, as well as fat and muscle composition of the body before, during, and after the study. Our long-term goals are to compare the effects of intermittent fasting with acute fasting. All of this is in an effort to establish how our eating habits ultimately affect our health and to, perhaps, contribute to new recommendations for healthy eating in normal weight population. BACKGROUND Obesity and diabetes are increasing health threats facing the Western world today, despite abundant research efforts and campaigns to prevent such outcomes. Throughout the years, as the incidence of both obesity and diabetes in the general population has increased, so too has the typical number of daily meals. A once common three meals per day has now increased to six meals per day, in many instances. Recent animal research has shown that intermittent fasting (one or two meals per day) over a long period of time can improve cardiovascular health and prevent chronic diseases. Biochemically, fasting leads to an activation of metabolic mechanisms designed to preserve carbohydrates and increase the dependence on energy produced by the metabolism of fat. There is little scientific evidence regarding the number of meals per day that proves to be the healthiest, and those studies that do exist have opposing conclusions. Several theories do exist regarding the number of meals per day that affect us in the most favorable way, but these are just theories. Our study is the first to assess, in both a systematic and controlled setting, how long-term, intermittent fasting affects the human body.