Effects of the Sleep SAAF responsive parenting intervention on rapid infant weight gain: A randomized clinical trial of African American families.

Responsive parenting (RP) interventions reduce rapid infant weight gain but their effect for underserved populations is largely unknown. The Sleep SAAF (Strong African American Families) study is a two-arm randomized clinical trial for primiparous African American mother-infant dyads that compares an RP intervention to a child safety control over the first 16 weeks postpartum. Here we report on intervention effects on rapid infant weight gain and study implementation. Families were recruited from a mother/baby nursery shortly after delivery. Community Research Associates (CRAs) conducted intervention home visits at 3 and 8 weeks postpartum, and data collection home visits at 1, 8, and 16 weeks postpartum. To examine rapid infant weight gain, conditional weight gain (CWG) from 3 to 16 weeks, the primary outcome, and upward crossing of 2 major weight-for-age percentile lines were calculated. Among the 212 mother-infant dyads randomized, 194 completed the trial (92% retention). Randomized mothers averaged 22.7 years, 10% were married, and 49% participated in the Supplemental Nutrition Assistance Program (SNAP). Adjusting for covariates, mean CWG was lower among RP infants (0.04, 95% CI [-0.33, 0.40]) than among control infants (0.28, 95% CI [-0.08, 0.64]), reflecting non-significantly slower weight gain (p = 0.15, effect size d = 0.24). RP infants were nearly half as likely to experience upward crossing of 2 major weight-for-age percentile lines (14.1%) compared to control infants (24.2%), p = 0.09, odds ratio = 0.52 (95% CI [0.24, 1.12]). Implementation data revealed that participating families were engaged in the intervention visits and intervention facilitators demonstrated high fidelity to intervention materials. Findings show that RP interventions can be successfully implemented among African American families while suggesting the need for modifications to yield stronger effects on infant weight outcomes.

INSIGHT responsive parenting intervention effects on child appetite and maternal feeding practices through age 3 years.

Expert guidance encourages interventions promoting structure-based practices to establish predictable eating environments in order to foster children's self-regulatory skills. However, few studies have examined whether and how child characteristics may moderate effects of interventions on maternal feeding practices. This analysis aimed to examine the effect of the INSIGHT Responsive Parenting (RP) intervention delivered largely during infancy, on child appetitive traits at 2.5 years and maternal feeding practices at 3 years. Primiparous mother-newborn dyads were randomized to a RP intervention designed for obesity prevention or a safety control intervention. Mothers completed the Child Eating Behavior Questionnaire at 2.5 years and the Structure and Control in Parent Feeding Questionnaire at 3 years. T-tests assessed study group differences on child appetitive traits at 2.5 years and maternal feeding practices at age 3. ANCOVA models assessed the effect of study group on parent feeding practices and tested appetitive traits as a moderator. Two hundred thirty-two mother-child dyads completed the trial. Mothers were predominantly white, non-Hispanic, college educated, and married. RP group mothers used more consistent meal routines, and less pressure, food to soothe, and food as reward compared to controls. Child satiety responsiveness moderated the RP intervention effect on maternal use of limiting exposure to unhealthy foods such that the RP intervention was most effective for children at higher levels of satiety responsiveness. Food responsiveness moderated RP intervention effects on maternal use of pressure, such that at lower levels of food responsiveness, control group mothers used more pressure than RP mothers. The INSIGHT RP intervention demonstrated sustained effects on maternal feeding practices through age 3 years, with some intervention effects showing moderation by child appetitive traits.

The Intervention Nurses Start Infants Growing on Healthy Trajectories (INSIGHT) Responsive Parenting Intervention for Firstborns Affects Dietary Intake of Secondborn Infants.

BACKGROUND: Although previous work has shown that children with older siblings tend to have poorer diet quality, no study has directly compared diets of infant siblings. OBJECTIVE: The goals of this analysis were to examine birth-order differences in dietary intake between firstborn (FB) and secondborn (SB) siblings, and to determine whether a responsive parenting (RP) intervention modified birth-order effects on diet. METHODS: The Intervention Nurses Start Infants Growing on Healthy Trajectories (INSIGHT) study randomly assigned first-time mothers to an RP intervention, which included guidance on feeding, sleep, soothing, and interactive play, or control. INSIGHT mothers who delivered a second child enrolled in an observation-only study of their SB infant (SIBSIGHT). Mothers completed FFQs for both children at ages 6 (n = 97 sibling pairs) and 12 (n = 100) mo. FB compared with SB intake of food groups of interest were compared, and the moderating effect of the RP intervention on birth-order differences was tested using generalized linear mixed models. RESULTS: Though FBs and SBs had similar diets, more FBs than SBs consumed 100% fruit juice at both 6 (13.8 compared with 3.2%, P = 0.006) and 12 mo (46.0 compared with 32.0%, P = 0.01). SBs consumed fruit more frequently (FB 2.8 compared with SB 3.2 times/d, P = 0.01), and were more likely to consume fried potatoes (FB 38.4 compared with SB 57.6%, P = 0.0009) and processed meats (FB 43.0 compared with SB 58.0%, P = 0.02) than FBs at 12 mo. There were no differences by birth order in intake of sweets, snacks, or sugar-sweetened beverages at 12 mo. At 12 mo, RP-group SBs ate vegetables more times per day (3.2) than control SBs (2.2, P = 0.01). RP-SBs also consumed a greater variety of vegetables (10.2) than control-SBs (7.9, P = 0.01). CONCLUSIONS: Birth order is not consistently associated with healthy or unhealthy infant dietary intake. However, an RP intervention delivered to first-time mothers may benefit subsequent infants' vegetable intake. This trial was registered at clinicaltrials.gov as NCT01167270.

Ecological momentary assessment of using food to soothe during infancy in the INSIGHT trial.

BACKGROUND: Use of food to soothe infant distress has been linked to greater weight in observational studies. We used ecological momentary assessment to capture detailed patterns of food to soothe and evaluate if a responsive parenting intervention reduced parents' use of food to soothe. METHODS: Primiparous mother-newborn dyads were randomized to a responsive parenting intervention designed for obesity prevention or a safety control group. Responsive parenting curriculum included guidance on using alternative soothing strategies (e.g., swaddling), rather than feeding, as the first response to infant fussiness. After the initial intervention visit 3 weeks after delivery, mothers (n = 157) were surveyed for two 5-8 day bursts at infant ages 3 and 8 weeks. Surveys were sent via text message every 4 h between 10:00 AM-10:00 PM, with 2 surveys sent at 8:00 AM asking about nighttime hours. Infant fusses and feeds were reported for each 4-h interval. Food to soothe was defined as "Fed First" and "Not Fed First" in response to a fussy event. Use of food to soothe was modeled using random-intercept logistic regression. RESULTS: The control group had greater odds of having Fed First, compared to the responsive parenting group at ages 3 and 8 weeks (3 weeks: OR = 1.9; 95% CI = 1.4-2.7; p < 0.01; 8 weeks: OR = 1.4; 95% CI = 1.0-2.1; p = 0.053). More responsive parenting mothers reported using a responsive parenting intervention strategy first, before feeding, than controls at ages 3 and 8 weeks (3 weeks: 58.1% vs. 41.9%; 8 weeks: 57.1% vs. 42.9%, respectively; p < 0.01 for both). At both ages combined, fewer fusses from responsive parenting infants were soothed best by feeding compared to controls (49.5% vs. 61.0%, respectively; p < 0.01). For both study groups combined, parents had greater odds of having Fed First during the nighttime compared to the daytime at both ages (3 weeks: OR = 1.6, 95% CI = 1.4-1.8; p < 0.01; 8 weeks: OR = 2.1; 95% CI = 1.7-2.6; p < 0.01). CONCLUSIONS: INSIGHT's responsive parenting intervention reduced use of food to soothe and increased use of alternative soothing strategies in response to infant fussiness. Education on responsive parenting behaviors around fussing and feeding during early infancy has the potential to improve later self-regulation and weight gain trajectory. TRIAL REGISTRATION: NCT01167270 . Registered July 21, 2010.

Sleep SAAF: a responsive parenting intervention to prevent excessive weight gain and obesity among African American infants.

BACKGROUND: Responsive parenting interventions that shape parenting behaviors in the areas of sleep and soothing, appropriate and responsive feeding, and routines represent a promising approach to early obesity prevention and have demonstrated effectiveness in our previous trials. However, this approach has yet to be applied to the populations most at-risk for the development of early obesity, including African Americans. The Sleep SAAF (Strong African American Families) study is a two-arm randomized controlled clinical trial evaluating whether a responsive parenting intervention focused on promoting infant sleeping and self-soothing can prevent rapid weight gain during the first 16 weeks postpartum among first-born African American infants. The responsive parenting intervention is compared to a child safety control intervention. METHODS: Three hundred first-time African American mothers and their full-term infants will be enrolled from one mother/baby nursery. Following initial screening and consent in the hospital, mothers and infants are visited at home by Community Research Associates for data collection visits at 1 week, 8 weeks, and 16 weeks postpartum and for intervention visits at 3 weeks and 8 weeks postpartum. The primary study outcome is a between-group comparison of infant conditional weight gain (CWG) scores from 3 weeks to 16 weeks; additional weight-related outcomes include differences in change in infants' weight for age over time and differences in infants' weight outcomes at age 16 weeks. Several other outcomes reflecting infant and maternal responses to intervention (e.g., sleeping, soothing, feeding, maternal self-efficacy, maternal depressive symptoms) are also assessed. DISCUSSION: The Sleep SAAF trial can inform efforts to prevent rapid weight gain and reduce risk for obesity early in the lifespan among African Americans. TRIAL REGISTRATION: NCT03505203 . Registered April 3, 2018 in clinicaltrials.gov .

Feasibility of Including Behavioral Feeding Training Within a Parent Intervention for Young Children With Type 1 Diabetes.

Young children with T1D frequently display challenging eating behaviors interfering with diabetes management. The current study explored the feasibility and acceptability of a behavioral parent feeding training session with young children with type 1 diabetes. As part of a larger intervention pilot focused on healthy eating and physical activity, 9 young children (Mage = 4.22) with type 1 diabetes (T1D) and their mothers participated in a novel/non-preferred food training session. Parents were taught strategies and then were given an opportunity to use the strategies with their child. The paradigm was video recorded and content was coded for parent and child behavior. Feasibility was high, and all parents rated the feeding session as acceptable. All parents demonstrated using at least one behavioral feeding skill (M = 3.38, SD = 1.60). All 9 (100%) children touched at least one of their non-preferred foods (M = 2.05, SD = 0.75), and 5 (56%) ate at least one novel/non-preferred food (M = 1.65, SD = 0.87). Parents of young children with T1D demonstrated use of parenting skills after receiving brief instructions, with more children than not trying at least one novel/non-preferred food.

Exploring infant signing to enhance responsive parenting: Findings from the INSIGHT study.

Responsive parenting is a promising framework for obesity prevention, yet attempts to date have largely relied on parents accurately interpreting their child's cues. Infant signing or "baby sign language" could enhance these interventions by improving bidirectional parent-child communication during the preverbal and emerging language years. In a clinical trial testing, a responsive parenting intervention designed for obesity prevention, we pilot tested a brief intervention at age 40 weeks with a subset of participating dyads that taught the signing gesture of "all done" to improve parental recognition of satiety. In addition, we surveyed all participating mothers at child age 18 months on the use of infant signing gestures in the prior year. Two hundred twenty-eight mothers completed the survey including 72 responsive parenting group mothers that received the signing instructions. A majority of mothers, 63.6%, reported teaching their infant signs in the prior year, and 61.4% of infants were using signs to communicate at 18 months (median signs = 2). The signs for "more" and "all done" were used by over half of study participants and were the most common signs used. Other signs related to eating or drinking were commonly used. Signing intervention group infants were more likely to use the sign for "all done" than controls (63.9% vs. 45.5%; P = 0.01), but there was no difference between groups with regard to the use of the sign for "more" (56.9% vs. 51.3%; P = 0.43). Signing is commonly used by parents of young children and holds potential to improve parental responsiveness and obesity prevention efforts.

INSIGHT responsive parenting intervention reduces infant's screen time and television exposure.

BACKGROUND: Sedentary behaviors, including screen time, in childhood have been associated with an increased risk for overweight. Beginning in infancy, we sought to reduce screen time and television exposure and increase time spent in interactive play as one component of a responsive parenting (RP) intervention designed for obesity prevention. METHODS: The Intervention Nurses Start Infants Growing on Healthy Trajectories (INSIGHT) study is a randomized trial comparing a RP intervention with a safety control intervention. Primiparous mother-newborn dyads (N = 279) were randomized after childbirth. Research nurses delivered intervention content at infant ages 3, 16, 28, and 40 weeks and research center visits at 1 and 2 years. As one component of INSIGHT, developmentally appropriate messages on minimizing screen time, reducing television exposure in the home, and promoting parent-child engagement through interactive play were delivered. Mothers self-reported their infant's screen time at ages 44 weeks, 1, 1.5, 2 and 2.5 years; interactive play was reported at 8 and 20 weeks and 2 years. RESULTS: More RP than control parents reported their infants met the American Academy of Pediatrics' no screen time recommendation at 44 weeks (53.0% vs. 30.2%) and at 1 year on weekdays (42.5% vs. 27.6%) and weekends (45.5% vs. 26.8%), but not after age 1 year. RP mothers and RP children had less daily screen time than controls at each time point (p ≤ 0.01). Fewer RP than control group mothers reported the television was ever on during infant meals (p < 0.05). The frequency of tummy time and floor play did not differ by study group; approximately 95% of infants spent time in restrictive devices (i.e. swing) at 8 and 20 weeks. At 2 years of age, there were no study group differences for time children spent in interactive play. CONCLUSION: From infancy to early childhood, the INSIGHT RP intervention reduced screen time and television exposure, but did not increase the frequency or amount of interactive play. TRIAL REGISTRATION: clinicaltrials.gov NCT01167270 . Registered on 21 July 2010.

INSIGHT responsive parenting intervention and infant feeding practices: randomized clinical trial.

BACKGROUND: What, when, how, how much, and how often infants are fed have been associated with childhood obesity risk. The objective of this secondary analysis was to examine the effect of a responsive parenting (RP) intervention designed for obesity prevention on parents' infant feeding practices in the first year after birth. METHODS: Primiparous mother-newborn dyads were randomized to the Intervention Nurses Start Infants Growing on Healthy Trajectories (INSIGHT) Study RP intervention or child safety control. Research nurses delivered intervention content at home at infant age 3-4, 16, 28, and 40 weeks, and at a research center at 1 year. RP feeding guidance advised feeding that was contingent (i.e., feed in response to hunger and satiety signs, alternatives to using food to soothe), and developmentally appropriate (i.e., delaying introduction of solids, age-appropriate portion sizes). Infant feeding practices (i.e., bottle use, introduction of solids, food to soothe) were assessed by phone interviews and online surveys and dietary intake was assessed using a food frequency questionnaire. RESULTS: RP mothers were more likely to use of structure-based feeding practices including limit-setting (p < 0.05) and consistent feeding routines (p < 0.01) at age 1 year. RP group mothers were less likely to use non-responsive feeding practices such as pressuring their infant to finish the bottle/food (p < 0.001), and using food to soothe (p < 0.01), propping the bottle (p < 0.05) assessed between 4 and 8 months, and putting baby to bed with a bottle at age 1 year (p < 0.05). Few differences were seen between groups in what specific foods or food groups infants were fed. CONCLUSIONS: Anticipatory guidance on RP in feeding can prevent the use of food to soothe and promote use of more sensitive, structure-based feeding which could reduce obesity risk by affecting how and when infants are fed during the first year. TRIAL REGISTRATION: The Intervention Nurses Start Infants Growing on Healthy Trajectories (INSIGHT) Study. www.clinicaltrials.gov . NCT01167270. Registered 21 July 2010.

Dieting is associated with reduced bone mineral accrual in a longitudinal cohort of girls.

BACKGROUND: Peak bone mass accrual occurs during adolescence, a time when dieting and related eating behaviors are common. Impaired bone mineral accrual is a known consequence of eating disorders in adolescents, but the effects of subclinical dieting behaviors on bone mineral content (BMC) have not been described in this age group. The goal of this analysis was to determine whether dieting behavior in preadolescence and adolescence is associated with bone mineral accrual in adolescent girls. METHODS: Non-Hispanic white girls (n = 139) were followed in a longitudinal cohort study. BMC was assessed at ages 9 and 15y. Dieting to lose weight was reported every 2 years, and dietary restraint and disinhibition, eating attitudes, weight concerns, and body esteem were assessed at age 11y. Girls were classified as "early dieters" if they first dieted by age 11y (31.7%), "adolescent dieters" if they first dieted after 11y (46.8%), or non-dieters if they did not report dieting by 15 y (21.6%). The effect of dieting related variables on BMC at 15y and change in BMC from 9 to 15y was assessed using linear regression, controlling for height, weight, BMI, physical activity, and pubertal status. RESULTS: Girls who first reported dieting to lose weight by age 11y had a 4.2% lower bone mineral accrual across adolescence (p = 0.02) and 3.1% lower BMC at age 15y (p = 0.005) than girls who first reported dieting after 11y or not at all. Number of weight control behaviors used, dietary restraint, and weight concerns were also negatively associated with BMC (p < 0.05). CONCLUSIONS: Dieting behavior in preadolescence is associated with reduced bone mineral accrual. Strategies to promote optimal bone development should include prevention of dieting. TRIAL REGISTRATION: Clinicaltrials.gov NCT03342430, November 17, 2017. Retrospectively registered.

Effect of a Responsive Parenting Educational Intervention on Childhood Weight Outcomes at 3 Years of Age: The INSIGHT Randomized Clinical Trial.

Importance: Rapid growth and elevated weight status in early childhood increase risk for later obesity, but interventions that improve growth trajectories are lacking. Objective: To examine effects of a responsive parenting intervention designed to promote developmentally appropriate, prompt, and contingent responses to a child's needs on weight outcomes at 3 years. Design, Setting, and Participants: A single-center randomized clinical trial comparing a responsive parenting intervention designed to prevent childhood obesity vs a home safety intervention (control) among 279 primiparous mother-child dyads (responsive parenting group, 140; control group, 139) who enrolled and completed the first home visit from January 2012 through March 2014 with follow-up to age 3 years (completed by April 2017). Interventions: Research nurses conducted 4 home visits during infancy and annual research center visits. The responsive parenting curriculum focused on feeding, sleep, interactive play, and emotion regulation. The control curriculum focused on safety. Main Outcomes and Measures: The primary outcome was body mass index (BMI) z score at 3 years (z score of 0 represents the population mean; 1 and -1 represent 1 SD above and below the mean, respectively). BMI percentile at 3 years was designated previously as the primary outcome. Secondary outcomes included the prevalence of overweight (BMI ≥85th percentile and <95th percentile) and obesity (BMI ≥95th percentile) at 3 years. Results: Among 291 mother-child dyads randomized, 279 received the first home visit and were included in the primary analysis. 232 mother-child dyads (83.2%) completed the 3-year trial. Mean age of the mothers was 28.7 years; 86% were white and 86% were privately insured. At age 3 years, children in the responsive parenting group had a lower mean BMI z score (-0.13 in the responsive parenting group vs 0.15 in the control group; absolute difference, -0.28 [95% CI, -0.53 to -0.01]; P = .04). Mean BMI percentiles did not differ significantly (47th in the responsive parenting group vs 54th in the control group; reduction in mean BMI percentiles of 6.9 percentile points [95% CI, -14.5 to 0.6]; P = .07). Of 116 children in the responsive parenting group, 13 (11.2%) were overweight vs 23 (19.8%) of 116 children in the control group (absolute difference, -8.6% [95% CI, -17.9% to 0.0%]; odds ratio [OR], 0.51 [95% CI, 0.25 to 1.06]; P = .07); 3 children (2.6%) in the responsive parenting group were obese vs 9 children (7.8%) in the control group (absolute difference, -5.2% [95% CI, -10.8% to 0.0%]; OR, 0.32 [95% CI, 0.08 to 1.20]; P = .09). Conclusions and Relevance: Among primiparous mother-child dyads, a responsive parenting intervention initiated in early infancy compared with a control intervention resulted in a modest reduction in BMI z scores at age 3 years, but no significant difference in BMI percentile. Further research is needed to determine the long-term effect of the intervention and assess its efficacy in other settings. Trial Registration: ClinicalTrials.gov Identifier: NCT01167270.

Family, friend, and media factors are associated with patterns of weight-control behavior among adolescent girls.

PURPOSE: To examine the relationship of family, friend, and media factors on weight-control group membership at 15 years separately and in a combined model. METHODS: Subjects included 166 15 year girls. Latent class analysis identified four patterns of weight-control behaviors: non-dieters, lifestyle, dieters, and extreme dieters. Family (family functioning, priority of the family meals, maternal/paternal weight-teasing, and mother's/father's dieting), friend (weight-teasing and dieting), and media variables (media sensitivity and weekly TV time) were included as predictors of weight-control group membership. RESULTS: Family functioning and priority of family meals predicted membership in the Extreme Dieters group, and maternal weight-teasing predicted membership in both dieters and extreme dieters. Friend's dieting and weight-teasing predicted membership in both dieters and extreme dieters. Media sensitivity was significantly associated with membership in lifestyle, dieters, and extreme dieters. In a combined influence model with family, friend, and media factors included, the following remained significantly associated with weight-control group membership: family functioning, friends' dieting, and media sensitivity. CONCLUSION: Family, friends, and the media are three sources of sociocultural influence, which play a role in adolescent girls' use of patterns of weight-control behaviors; family functioning was a protective factor, whereas friend's dieting and media sensitivity were risk factors. These findings emphasize the need for multidimensional interventions, addressing risk factors for dieting and use of unhealthy weight-control behaviors at the family, peer, and community (e.g., media) levels.

Metabolism-related microRNAs in maternal breast milk are influenced by premature delivery.

BackgroundMaternal breast milk (MBM) is enriched in microRNAs, factors that regulate protein translation throughout the human body. MBM from mothers of term and preterm infants differs in nutrient, hormone, and bioactive-factor composition, but the microRNA differences between these groups have not been compared. We hypothesized that gestational age at delivery influences microRNA in MBM, particularly microRNAs involved in immunologic and metabolic regulation.MethodsMBM from mothers of premature infants (pMBM) obtained 3-4 weeks post delivery was compared with MBM from mothers of term infants obtained at birth (tColostrum) and 3-4 weeks post delivery (tMBM). The microRNA profile in lipid and skim fractions of each sample was evaluated with high-throughput sequencing.ResultsThe expression profiles of nine microRNAs in lipid and skim pMBM differed from those in tMBM. Gene targets of these microRNAs were functionally related to elemental metabolism and lipid biosynthesis. The microRNA profile of tColostrum was also distinct from that of pMBM, but it clustered closely with tMBM. Twenty-one microRNAs correlated with gestational age demonstrated limited relationships with method of delivery, but not other maternal-infant factors.ConclusionPremature delivery results in a unique MBM microRNA profile with metabolic targets. This suggests that preterm milk may have adaptive functions for growth in premature infants.

Development of a theory-based questionnaire to assess structure and control in parent feeding (SCPF).

BACKGROUND: Parents shape children's eating environments and act as powerful socialization agents, impacting young children's behavioral controls of food intake. Most feeding measures assess parents' use of control to manage children's intake of energy dense foods. The Structure and Control in Parent Feeding (SCPF) questionnaire was developed to assess more positive aspects of feeding practices with their young children -setting limits, providing routines-that promote self-regulation, as well as controlling feeding practices. METHODS: A mixed method approach was used to develop the SCPF. In 2013, cognitive interviews informed the modification, deletion and/or replacement of items. In 2014, the survey was distributed statewide to mothers of toddlers aged 12 to 36 months participating in the Women, Infants, and Children program. In 2016, exploratory factor analyses was conducted to test our theoretical parenting model and content validity and criterion validity were assessed (n = 334). RESULTS: Exploratory factor analysis (EFA) and second-order EFA revealed a 2-factor, 22-item Structure model and a 2-factor, 12-item Control model. Internal consistencies for all factors exceeded 0.70. As predicted, the Structure superfactor was positivity associated with responsiveness, whereas the Control superfactor was positively associated with demandingness on the Caregiver's Feeding Styles Questionnaire. The Structure subscales were also positively associated with mealtime behaviors and Control subscales were positively associated with control-oriented feeding measures from the Control in Parent Feeding Practices questionnaire. CONCLUSION: The SCPF questionnaire is a reliable tool that can be used to assess aspects of structure- and control-based feeding practices to better understand how parents feed their toddlers.

Randomized Face-to-Face vs. Home Exercise Interventions in Pregnant Women with Gestational Diabetes.

OBJECTIVES: Evaluate effects of a theoretically-based, semi-intensive (Face-to-Face; F2F) exercise intervention and minimum-contact (Home) exercise intervention to the standard care (Control) on exercise, its motivational determinants, blood glucose levels, and insulin use of pregnant women with gestational diabetes mellitus (GDM). DESIGN: Randomized control trial with two intervention arms and control (standard care). METHOD: Participants (N=65) were randomized to a Control (standard prenatal care/GDM dietary counseling), Home (standard care + phone education/support + home exercise), or F2F (standard care + on-site education/support + guided exercise with instructor on 2 days/week) group from ~20 weeks gestation to delivery. Assessments of exercise and motivational determinants were obtained at baseline (20-weeks gestation) and follow-up (32-weeks gestation). Blood glucose levels (fasting/postprandial mg/dL) and insulin use were extrapolated from medical records. RESULTS: At the 32-week follow-up, the F2F group had significantly higher exercise min, pedometer steps/day, and motivational determinants (attitude, subjective norm, perceived control, intention) than controls (p's < .05) and significantly higher exercise min and subjective norm than the Home group (p's < .05); these effect sizes were medium-large (η2 = .11-.23). There was a medium effect (η2 = .13) on postprandial blood glucose at 36-weeks gestation with the F2F group having lower values than controls. Although not significant, the F2F group started insulin later (33 weeks gestation) than the Home (27 weeks) and Control (31 weeks) groups. CONCLUSION: A theoretically-based, F2F exercise intervention has multiple health benefits and may be the necessary approach for promoting exercise motivation and behavior among GDM women.

Myths, presumptions, and facts about obesity.

BACKGROUND: Many beliefs about obesity persist in the absence of supporting scientific evidence (presumptions); some persist despite contradicting evidence (myths). The promulgation of unsupported beliefs may yield poorly informed policy decisions, inaccurate clinical and public health recommendations, and an unproductive allocation of research resources and may divert attention away from useful, evidence-based information. METHODS: Using Internet searches of popular media and scientific literature, we identified, reviewed, and classified obesity-related myths and presumptions. We also examined facts that are well supported by evidence, with an emphasis on those that have practical implications for public health, policy, or clinical recommendations. RESULTS: We identified seven obesity-related myths concerning the effects of small sustained increases in energy intake or expenditure, establishment of realistic goals for weight loss, rapid weight loss, weight-loss readiness, physical-education classes, breast-feeding, and energy expended during sexual activity. We also identified six presumptions about the purported effects of regularly eating breakfast, early childhood experiences, eating fruits and vegetables, weight cycling, snacking, and the built (i.e., human-made) environment. Finally, we identified nine evidence-supported facts that are relevant for the formulation of sound public health, policy, or clinical recommendations. CONCLUSIONS: False and scientifically unsupported beliefs about obesity are pervasive in both scientific literature and the popular press. (Funded by the National Institutes of Health.).

Application of the multiphase optimization strategy to a pilot study: an empirical example targeting obesity among children of low-income mothers.

BACKGROUND: Emerging approaches to building more efficient and effective behavioral interventions are becoming more widely available. The current paper provides an empirical example of the use of the engineering-inspired multiphase optimization strategy (MOST) to build a remotely delivered responsive parenting intervention to prevent obesity among children of low-income mothers with and without depressive symptoms. METHODS: Participants were 107 mothers with (n = 45) and without (n = 62) depressive symptoms who had a child aged 12 to 42 months participating in the Women, Infants and Children program. Participants were randomized to one of sixteen experimental conditions using a factorial design that included a combination of the following eight remotely delivered intervention components: responsive feeding curriculum (given to all participants), parenting curriculum, portion size guidance, obesogenic risk assessment, personalized feedback on mealtime routines, feeding curriculum counseling, goal setting, mobile messaging, and social support. This design enabled efficient identification of components with low feasibility and acceptability. RESULTS: Completion rates were high (85%) and did not statistically differ by depressive symptoms. However, mothers with depressive symptoms who received obesogenic risk assessment and personalized feedback on mealtime routines components had lower completion rates than mothers without depressive symptoms. All intervention components were feasible to implement except the social support component. Regardless of experimental condition, most participants reported that the program increased their awareness of what, when, and how to feed their children. CONCLUSIONS: MOST provided an efficient way to assess the feasibility of components prior to testing them with a fully powered experiment. This framework helped identify potentially challenging combinations of remotely delivered intervention components. Consideration of how these results can inform future studies focused on the optimization phase of MOST is discussed.

A call for research exploring social media influences on mothers' child feeding practices and childhood obesity risk.

There is increasing interest in leveraging social media to prevent childhood obesity, however, the evidence base for how social media currently influences related behaviors and how interventions could be developed for these platforms is lacking. This commentary calls for research on the extent to which mothers use social media to learn about child feeding practices and the mechanisms through which social media influences their child feeding practices. Such formative research could be applied to the development and dissemination of evidence-based childhood obesity prevention programs that utilize social media. Mothers are identified as a uniquely important target audience for social media-based interventions because of their proximal influence on children's eating behavior and their high engagement with social media platforms. Understanding mothers' current behaviors, interests, and needs as they relate to their social media use and child feeding practices is an integral first step in the development of interventions that aim to engage mothers for obesity prevention. This commentary highlights the importance of mothers for childhood obesity prevention; discusses theoretical and analytic frameworks that can inform research on social media and mothers' child feeding practices; provides evidence that social media is an emerging context for social influences on mothers' attitudes and behaviors in which food is a salient topic; and suggests directions for future research.

Low-Income Women's Feeding Practices and Perceptions of Dietary Guidance: A Qualitative Study.

Objectives Describe themes characterizing feeding behaviors of low-income women participating in the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC), and identify the attitudes, beliefs, and sources of information that inform these practices. Methods Formative research was conducted including focus groups and semi-structured individual phone interviews with a total of 68 low-income women participating in WIC. Qualitative data were recorded, transcribed, imported into NVivo 8.0, and analyzed for common themes. Results Mothers reported feeding behaviors inconsistent with guidance from WIC and the American Academy of Pediatrics. Three main themes were identified. First, mothers reported receiving conflicting messaging/advice from medical professionals, WIC nutritionists, and family members, which was confusing. Mothers also reported dissatisfaction with the "one size fits most" approach. Lastly, mothers reported relying on their "instincts" and that "all babies are different" when deciding and rationalizing what feeding guidance to follow. Conclusions Future interventions targeting this high-risk population should consider developing personalized (individualized) messaging, tailored to the needs of each mother-child dyad. Focused efforts are needed to build partnerships between WIC providers and other health care providers to provide more consistent messages about responsive feeding to prevent early obesity.

Patterns of weight-control behavior among 15 year old girls.

OBJECTIVE: The objectives were to identify and predict patterns of weight-control behavior in 15 years old (yo) girls and to examine weight-control group differences in energy intake. METHOD: Participants included 166 girls assessed every 2 years (ys) from age 5 to 15. Latent class analysis was used to identify patterns of weight-control behaviors. Antecedent variables (e.g., inhibitory control at 7 ys), and concurrent variables (e.g., BMI and dietary intake at 15 ys) were included as predictors. Assessments were a combination of survey, interview, and laboratory measures. RESULTS: Latent class analysis (LCA) identified four classes of weight-control behaviors, nondieters (26%), and three dieting groups, namely lifestyle (16%), dieters (43%), and extreme dieters (17%). Levels of restraint, weight concerns, and dieting frequency increased across groups, from nondieters to extreme dieters. Body mass index (BMI) at 5 ys and inhibitory control at 7 ys predicted weight-control group at 15 ys; for example, with every one point decrease in inhibitory control, girls were twice as likely to be extreme dieters than nondieters. Girls in the extreme dieters group were mostly classified as under-reporters and had the lowest self-reported intake, but ate significantly more in the laboratory. DISCUSSION: Among 15 yo girls, "dieting" includes a range of both healthy and unhealthy behaviors. Risk factors for membership in a weight-control group are present as early as 5 ys. Patterns of intake in the laboratory support the view that lower reported energy intake by extreme dieters is likely due under-reporting as an intent to decrease intake, not actual decreased intake.