An interventional study of Children Eating Well (CHEW) mobile app and Beanstalk mobile app in Obesity, Childhood, Nutrition, Healthy and Physical Inactivity, sponsored by Pamela Hull. Completed at 1 site in United States. Open to participants aged 18 Years to 99 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-06-03.
Sponsored by Pamela Hull · Not applicable, Interventional, and Prevention
The purpose of Mobile Apps for Preschool Parents (MAPP) Study is to test the effectiveness of two mobile applications for parents of preschool aged children: 1) an app focused on child and family nutrition and wellness, and 2) an app focused on parents reading to their children.
The Mobile Apps for Preschool Parents (MAPP) Study addresses an important gap in the scientific literature, which is the need to evaluate the use of parent-targeted, guided goal-setting for childhood obesity risk reduction via a mobile application, specifically for parents of preschool-aged children for early intervention.
Obesity is a leading cause of multiple chronic diseases, including 13 types of cancer, heart disease, stroke, and type II diabetes. Major behavioral determinants of obesity are also independent risk factors for these chronic diseases, including unhealthy diet, lack of physical activity, and poor sleep quality. Childhood obesity increases risk for adult obesity and early onset of conditions such as high blood pressure, high cholesterol, asthma, sleep apnea, and joint problems. Childhood obesity disproportionately affects children of lower socioeconomic status, racial/ethnic minority groups, and rural areas, thus exacerbating and contributing to health disparities among obesity-related health conditions. Children in low-income families that qualify for income-based public assistance programs represent a population that is at high risk for obesity. These programs include the Women, Infants and Children (WIC) Supplemental Nutrition Program; Head Start (preschool child care centers); the Supplemental Nutrition Assistance Program (SNAP); Temporary Assistance for Needy Families (TANF); and Medicaid.
With the Attention Control Arm, the MAPP Study will also contribute valuable information about the effectiveness of using a mobile application with parent-targeted, guided goal-setting for reading to preschool-aged children. Previous studies have shown that adults reading to children is beneficial for child learning and development.
All parents/guardians (both samples and both arms) will be asked to use the respective apps for an 8-week intervention period. The primary outcome will be measured in the Baseline Survey and a Follow Up Survey after completing the 8-week intervention period. After completion of the Follow Up Survey, parents/guardians will be given the option to download and use the other app, if they are interested (i.e., information about the CHEW app for the Control Arm, and information about the Control app for the Intervention Arm). For both the Intervention Arm and those who choose to download the CHEW app in the Control Arm, usage of the CHEW app (i.e., app analytics) will be tracked for up to 20 weeks after the date of study enrollment.
1,129 studies on the registry are indexed under Pediatric Obesity; 187 are open to participants now.
This study's enrollment of 224 is above the median of 100 across 870 interventional studies indexed under Pediatric Obesity.
Browse Pediatric Obesity studies →Pamela Hull is the lead sponsor of 2 studies on the registry; none are open to participants now.
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Exclusion Criteria:
The parents/guardians in this study arm will use the Children Eating Well (CHEW) mobile app focused on child and family nutrition and wellness for the first 8 weeks of the study. This app is designed to help parents/guardians of preschool-aged children to improve nutrition, physical activity, sleep, feeding children at mealtimes, and related wellness topics.
Behavioral: Children Eating Well (CHEW) mobile app
The parents/guardians this study arm will use the Beanstack mobile app (or the Bookroo app, as an alternative) focused on parents reading to their children for the first 8 weeks of the study. This app may help parents/guardians to read more to their preschool children (and other children), which is good for child learning and development.
Behavioral: Beanstalk mobile app
The target users of the CHEW app are parents/guardians of preschool aged children. The purpose of the CHEW app is to provide parents/guardians with easy, practical ways to improve nutrition and wellness among their preschool-aged children. The app provides guided goal setting and tracking tools. Parents/guardians set goals related to their preschool-aged children focused on nutrition, physical activity, sleep behaviors and parenting styles. The parents/guardians can also to set goals for themselves for behaviors related to nutrition, physical activity, sleep, and stress. The app does not have features that target children as users. The CHEW app was developed by the study team and can be downloaded for mobile devices (phones or tablets) at no cost in the Apple App Store (iOS/Apple) and the Google Play Store (Android). After downloading the CHEW app, enrolled participants must enter the Access Code provided by the study team in order to unlock the app and use it.
Beanstack is free commercially-available mobile app that provides goal setting and tracking tools similar to the CHEW app, but focused on a different topic, specifically encouraging parents/guardians to read to their preschool children more frequently. In the case that a parent/guardian is not able to successfully download Beanstack to their mobile device, as a backup alternative they will be asked to use a similar free commercially-available mobile application called Bookroo. Beanstack is available to the public for mobile devices (phones or tablets) at no cost in the Apple App Store (iOS/Apple) and the Google Play Store (Android). Bookroo is a web-based application that users access via the mobile device's web browser and looks and functions like a regular mobile application. It should work on any mobile device with a browser and data/wifi access,
Also known as: Alternative: Bookroo mobile app
Healthy Kids childhood obesity risk score
Using the 19-item Healthy Kids scale, each item is coded from 1 to 5, with 1 being the least healthful and 5 being the most healthful. To calculate the childhood obesity risk score, all 19 items are summed together, ranging from 19 to 95, with higher values reflecting a more healthful, or positive, outcome.
Time frame: 2 months
Child intake of sugar-sweetened beverages (Healthy Kids items)
Child intake of sugar-sweetened beverages (Healthy Kids items)
Time frame: 2 months
Child intake of fruits and vegetables (Healthy Kids items)
Child intake of fruits and vegetables (Healthy Kids items)
Time frame: 2 months
Child intake of energy dense food/beverages (Healthy Kids items)
Child intake of energy dense food/beverages (Healthy Kids items)
Time frame: 2 months
Child intake of dairy/calcium (Healthy Kids items)
Child intake of dairy/calcium (Healthy Kids items)
Time frame: 2 months
Child physical activity and sedentary behavior (Healthy Kids items)
Child physical activity and sedentary behavior (Healthy Kids items)
Time frame: 2 months
Sleep: Child bedtime (Healthy Kids item)
Child bedtime (Healthy Kids item)
Time frame: 2 months
Family meals: Eating meals with child (Healthy Kids item)
Eating meals with child (Healthy Kids item)
Time frame: 2 months
Child dietary intake (Healthy Kids items)
Child dietary intake (Healthy Kids items)
Time frame: 2 months
Diet quality: Variety of child vegetable intake (My Veggies questionnaire)
Variety of child vegetable intake (My Veggies questionnaire)
Time frame: 2 months
My Child at Mealtime questionnaire
My Child at Mealtime questionnaire measures food-related parenting styles.
Time frame: 2 months
Home Inventory Describing Eating and Activity (Home-IDEA2, food section)
Home Inventory Describing Eating and Activity (Home-IDEA2, food section) measures home food environment.
Time frame: 2 months
Frequency of reading to child
Frequency of reading to child
Time frame: 2 months
Length of time reading to child
Length of time reading to child
Time frame: 2 months
PDFs hosted by the registry, ClinicalTrials.gov.
Ran from Aug 2024 to primary completion in Nov 2024, 3 months.
Of 539 non-industry interventional studies with no phase under Pediatric Obesity, half reached primary completion within 25 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 45. This study's 3 months is below that.
Counting every sponsor, half of 541 studies reached it within 25 months; a quarter within 11 and three quarters within 45.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in May 2026. You cannot join it, but the record below documents what was studied.
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Pamela Hull