20 Clinical Trials for Various Conditions
Using small monetary rewards to reinforce healthy behaviors, such as the consumption of fruits and vegetables (F\&V), the investigators tested fixed and variable reinforcement schedules in three middle schools. The investigators measured carotenoid levels, as a biomarker of F\&V intake, and F\&V waste over the intervention time frame. The investigators also tracked the school lunch participation rates over time.
Research has shown that a high percentage of college students do not meet recommended national guidelines for physical activity or fruit/vegetable intake. The purpose of this study was to pilot test the short-term efficacy of a one-on-one, brief motivational intervention (BMI) designed to increase physical activity and fruit/vegetable intake. It was hypothesized that participants in the BMI condition would report greater physical activity and fruit/vegetable intake at follow-up than those in an education-only control condition.
The produce prescription program is one type of food is medicine (FIM) programs, where healthcare providers "prescribe" fruits and vegetables (F\&V) to patients with low household incomes, experience food insecurity, and one or more diet-related diseases. NutriConnect seeks to compare the effectiveness of two produce prescription approaches on F\&V intake and food security: credit to Rewards account (NutriConnect Credit) vs. produce box delivery (NutriConnect Delivery), while exploring implementation outcomes such as reach, sustainability, implementation, and cost.
The goal of this randomized controlled trial is to examine fruit and vegetable consumption in preschoolers following a nutrition education curriculum. The main questions it aims to answer is: 1. Is this intervention consisting of nutrition education and taste-test activities able to improve fruit and vegetable consumption in preschoolers during their usual lunch meal? 2. Is the improvement of fruit and vegetable consumption sustained for at least 6 weeks after completion of the intervention? Participants in the intervention classroom will partake in 3 nutrition education sessions per week during the 6-week-long curriculum. Researchers will compare this to changes in fruit and vegetable intake of the children in the control classroom, who will undergo identical measurements, but will not participate in the curriculum.
The research proposal will be an 8-week randomized control trial (RCT) to examine the efficacy of an eHealth intervention, namely Healthy Parental Online Education (HOPE), on fruit and vegetable intake and active playtime among toddlers enrolled in early head start programs in Lubbock, Texas. Parents with toddlers ages one to three years will be recruited from Early Head Start centers. Written consent forms will be obtained before baseline data collection. The participants will be then randomly assigned to the intervention or control group. The participants in the intervention group will receive a multi-component online nutrition intervention for eight weeks. While the control group will receive a copy of the booklet that includes the 2020 U.S. Department of Agriculture Dietary Guidelines (USDA) for toddlers and adults. The investigators will measure sociodemographic, parental nutritional knowledge, parental attitude related to healthy eating, parental self-efficacy, parental feeding practices, carotenoids in the skin of both parents and toddlers, three-day food photos, and physical activity and sedentary times of toddlers. This research proposal hypothesizes that there will be significant differences in fruit and vegetable intake and physically active time among toddlers between the intervention and control group from baseline to 3 months. The investigators also hypothesize that there will be significant differences in parental nutrition knowledge, attitude, self-efficacy, and feeding practice between the intervention and control group from baseline to 3 months.
The investigators implemented a theory-based randomized controlled trial in ten rural Virginia middle schools in 2008-2010 and assessed the impact on health behaviors including fruit/vegetable intake as a primary outcome. Schools were randomized to intervention or control groups. Goal setting, peer leaders, and in-class workshops were intervention features. Seventh graders filled out surveys on health behaviors, psycho-social variables, and demographic characteristics. The investigators expected schools receiving the intervention to report a higher fruit-vegetable intake compared to control schools where students received standard health information. Sample (n=1,119) was 48.5% female, 50% White, with a mean age of 12.6 years. Fruit/vegetable intake was significantly higher in intervention schools at immediate post and at 1-year follow-up compared to controls.
The purpose of this study is to assess the impact of digital promotions of a Supplemental Nutrition Assistance Program (SNAP) fruit and vegetable incentive program on SNAP participant patronage and sales at farmers' markets. The study will analyze SNAP transactions from zip codes that receive digital promotions compared to zip codes that receive no additional promotions.
The goal of this study is to evaluate the effectiveness of financial incentives delivered in real-time at point of purchase, on low-income consumers' purchase of fruits and vegetables, fruits and vegetables consumption, diet quality, and weight/BMI. The study will test real-time incentives compared to a no-incentive control condition.
The purpose of the study is to evaluate an afterschool program to teach nutrition through basic cooking skills. This after school extracurricular program increases the students' confidence, knowledge, and skills for cooking as one of the first steps for dietary improvement. In addition to the life lessons students learn during this class, they gain self-confidence and become self-sufficient culinary experts that are capable of educating their siblings, parents, and social circles. This research project will test the impact this program has on nutritional knowledge, culinary efficacy, and nutritional choices made in and out of the home. The Pink and Dude Chef Afterschool Cooking Program was developed through STRIDE (Science through Translational Research in Diet and Exercise at California Polytechnic state University (Cal Poly) in San Luis Obispo, CA. Hypothesis: Middle school students participating in the Pink and Dude Chef afterschool cooking program will increase nutritional knowledge, culinary efficacy, motivation to eat fruits and vegetables, and fruit and vegetable intake compared to an attention control group.
The goal of this clinical trial is to test if a regulation of craving training intervention in the form of a mobile phone app can increase fruit and vegetable intake in adolescent girls ages 14-18 years of age. The main questions it aims to answer are: 1. What is the effect of a mobile app version of the regulation of craving training intervention on healthy eating index scores over one year? 2. What is the effect of a mobile app version of the regulation of craving training intervention on body mass index, waist circumference, and blood glucose over one year? Researchers will compare the active regulation of craving training arm to a control fun food fact arm to see if the regulation of craving training improves HEI scores, BMI, and blood glucose over a year. Participants will be asked to play the regulation of craving training mobile app twice a week for a year.
The investigators propose an efficacy study (i.e., do salad bars work under controlled conditions in naturalistic settings) to test whether introducing salad bars in elementary, middle, and high schools that have never had salad bars affects students' FV consumption and waste during lunch. A cluster randomized controlled trial will test new salad bars against controls for 6 wks, with/without an additional 4-wk marketing phase .
The Dietary Approaches to Stop Hypertension (DASH) trial has been shown to reduce blood pressure and plasma total and LDL-cholesterol (C) compared to a Western diet, but shows no benefit on other blood lipid variables associated with cardiovascular disease (CVD) risk, namely HDL-cholesterol and triglycerides. The overall objective of this study is to determine whether modification of the DASH diet by substituting carbohydrate with fat will result in improvements in multiple biomarkers of CVD risk. Specifically, the investigators will test the hypotheses that modification of the DASH diet by reducing carbohydrate, primarily in the form of simple sugars and glycemic starches, and allowing for a more liberal intake of total and saturated fat, primarily from dairy foods, will: (1) improve lipoprotein markers of CVD risk (reduced total/HDL-C ratio, apolipoprotein B, small LDL particles, and increased HDL-C, apoAI, and large HDL particles); and (2) result in comparable reductions of systolic and diastolic blood pressure to those achieved with the standard DASH diet. The investigators will also assess the effects of the modified DASH diet on markers of insulin resistance and inflammation. Our main hypotheses will be tested by a controlled dietary intervention conducted in 40 healthy men and women who will be randomly allocated to consume, for 3 weeks each, a control Western diet, a standard DASH diet, and a modified low-carbohydrate DASH diet, separated by 2-week washout periods.
The purpose of this study is to validate the non-invasive tool, resonance Raman spectroscopy for assessing vegetable and fruit consumption.
Food insecurity increases the risk of obesity, diabetes, hypertension, and cancer. American Indians (AIs) in Oklahoma are three times as likely as Whites to be food-insecure (21% vs. 7%) and have burdens of obesity (42%), hypertension (38%), and diabetes (15%) that exceed those of the general US population. While individual-level obesity prevention efforts have been implemented with AIs, few environmental interventions to reduce food insecurity and improve fruit and vegetable intake have been conducted with tribal communities. Community gardening interventions have been shown to increase vegetable and fruit intake, reduce food insecurity, and lower BMI among children and adults; however, to date, no such interventions have been evaluated with AI families. The proposed study, entitled "Food Equity Resource and Sustainability for Health (FRESH)," will assess the impact of a tribally-initiated community gardening intervention on vegetable and fruit intake, food insecurity, BMI, and blood pressure in families living on the Osage Nation reservation in Oklahoma.
Intake of vegetables and fruits in preschool children is less than recommended amounts. Although offering a variety of foods has been shown to increase intake, this effect has not been well studied for low-energy-dense foods. The purpose of this study was to test whether increasing the variety of vegetables and fruits served to preschool children affected the amount eaten. The hypotheses were that increasing the variety of vegetables and fruits would increase both the amount selected and the amount eaten.
The Nutrition Study of the GA2LEN Follow-Survey was designed to investigate the association between usual dietary intake and allergic and respiratory outcomes in adults across Europe. Within this framework, a food frequency questionnaire (FFQ) was designed to ascertain usual dietary intake of 250 food items, which was translated into the languages of the participant centres. Information on daily intake of foods, nutrients, and flavonoids was derived.
The investigators hypothesize that the new United States Department of Agriculture (USDA) regulations for lunches served as part of the National School Lunch Program will decrease the percentage of enrolled students purchasing lunch, increase the percentage of children taking fruit and vegetables, decrease the percentage of fruit and vegetable servings being thrown away, and increase the total number of fruit and vegetable servings eaten. The investigators also hypothesize that when the regulations are in force, simple behavioral interventions can counteract the potentially negative impact on lunch sales and consumption. In other words, implementing the regulations and behavioral interventions together, the percentage of enrolled students taking a school lunch will increase at least back to baseline levels, the percentage of children taking fruits and vegetables will increase, the percentage of fruit and vegetable servings wasted will decrease, and the total number of fruit and vegetable servings eaten will increase.
This study (aka Healthy Directions2 or HD2) builds on an earlier study titled Healthy Directions (aka Healthy Directions 1 or HD1). HD1 was an intervention designed to target cancer prevention among multi-ethnic populations; it led to significant improvements in the multiple risk behavior score (consumption of red meat, fruits and vegetables, and multi-vitamins). Building on the success of HD1, HD2 further expanded the intervention to include smoking and physical activity. In addition, it expanded the study goals to include increasing efficacy across all target risk behaviors, and promoting long-term maintenance of behavior change.
The purpose of this investigation is to conduct a 12-week pilot study to examine the effect of three different dietary prescriptions that differ on targeting reducing energy density (kcal/gram) and energy (kcal) on overall dietary intake, hunger, feelings of deprivation, satisfaction with the diet, mood, and weight loss in 45 overweight/obese adults receiving a 12-week behavioral weight loss intervention.
This study will test the hypothesis that reducing the energy density of the diet by incorporating more water-rich foods will result in: 1) greater weight loss and weight maintenance; 2) greater diet satisfaction and satiety; and 3) more healthful dietary patterns than reducing dietary fat alone.