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ABSTRACT: Excessive body weight and adiposity contribute to many adverse health concerns. The American College of Sports Medicine (ACSM) recognizes that the condition of excess body weight and adiposity is complex, with numerous factors warranting consideration. The ACSM published a position stand on this topic in 2001 with an update in 2009, and a consensus paper on the role of physical activity in the prevention of weight gain in 2019. This current consensus paper serves as an additional update to those prior ACSM position and consensus papers. The ACSM supports the inclusion of physical activity in medical treatments (pharmacotherapy, metabolic and bariatric surgery) of excess weight and adiposity, as deemed to be medically appropriate, and provides perspectives on physical activity within these therapies. For weight loss and prevention of weight gain, the effects may be most prevalent when physical activity is progressed in an appropriate manner to at least 150 min·wk-1 of moderate-intensity physical activity, and these benefits occur in a dose-response manner. High-intensity interval training does not appear to be superior to moderate-to-vigorous physical activity for body weight regulation, and light-intensity physical activity may also be an alternative approach provided it is of sufficient energy expenditure. Evidence does not support that any one single mode of physical activity is superior to other modes for the prevention of weight gain or weight loss, and to elicit holistic health benefits beyond the effects on body weight and adiposity, multimodal physical activity should be recommended. The interaction between energy expenditure and energy intake is complex, and the effects of exercise on the control of appetite are variable between individuals. Physical activity interventions should be inclusive and tailored for sex, self-identified gender, race, ethnicity, socioeconomic status, age, and developmental level. Intervention approaches can also include different forms, channels, and methods to support physical activity.

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BACKGROUND: Most of the worldwide population is overweight and suffers from the resulting musculoskeletal comorbidities such as knee osteoarthritis or back pain. Practice guidelines recommend weight loss interventions for individuals suffering from these conditions. This systematic review investigated whether including a weight loss intervention in the musculoskeletal therapy of these individuals was cost-effective compared to administering the musculoskeletal therapy alone. METHODS: This study followed the PRISMA guidelines to systematically and independently search six databases and select full health economic evaluations published up to May 2024 from health care or societal perspectives according to predefined eligibility criteria. Cost data were standardised to 2023 Belgium Euros. The methodological quality was assessed using two health economic-specific checklists. RESULTS: The searches produced 5'305 references, of which 8 studies were selected for a total of 1'726 participants. The interventions consisted of different exercise plans and nutritional targets. Six values were in the north-eastern; leading to increased quality-adjusted life year (QALY) and higher costs; and two in the south-eastern quadrant of the cost-utility plane; leading to increased QALYs and lower costs. Two studies observed no differences in QALYs. Incremental cost utility ratios (ICUR) ranged from €13'580.10 to €34'412.40 per additional QALY from a healthcare perspective. From a societal perspective, the ICUR was €30'274.84. The included studies fulfilled 86 percent of the criteria in trial-based economic evaluations and 57 percent in model-based economic evaluations. The most common limitations of the studies were related to appropriate cost measures' specifications, research questions, time horizon choices, and sensitivity analyses. CONCLUSIONS: This systematic review showed weak but consistent evidence of cost-effectiveness for adding a weight loss intervention to musculoskeletal therapy for individuals with overweight, from either perspective. Further economic evaluations should evaluate the long-term cost-effectiveness of the intervention. TRIAL REGISTRATION: International Platform of Registered Systematic Review and Meta-analysis Protocols INPLASY (2022,110,122).

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INTRODUCTION: The short-term effectiveness of the PRomotion de l'ALIMentation et de l'Activité Physique-INÈgalités de Santé' (PRALIMAP-INÈS) intervention to reduce social inequalities in overweight and obesity management among adolescents between 2012 and 2015 was demonstrated. This longitudinal mixed-methods study is a 10-year postintervention follow-up of the PRALIMAP-INÈS intervention with the aim of investigating social, economic, educational and health (especially weight) trajectories from adolescence to young adulthood. METHODS AND ANALYSIS: Among adolescents enrolled in PRALIMAP-INÈS (n=1419), we estimate the number of participants to be 852. Adolescents who were included in the PRALIMAP-INÈS intervention will be contacted 10 years later and invited to participate in a follow-up visit. Participants will self-report their sociodemographic characteristics, body image perceptions, overweight/obesity care pathway, lifestyle and dietary behaviours and attitudes, psychological health and experience of the PRALIMAP-INÈS intervention. A check-up visit will be scheduled by a clinical research nurse to record waist circumference and weight and height for body mass index calculation and to construct the healthcare pathway from adolescence to young adulthood. 40 participants will be invited to participate in a semistructured interview conducted by a sociologist to deepen the understanding of trajectories regarding social aspects that are likely to influence health behaviours in participants. ETHICS AND DISSEMINATION: The PRALIMAP-CINeCO trial was approved by French Persons Protection Committee (no. 2021-A00949-32) and a conformity declaration was made with French National Commission for Data Protection and Liberties. Results will be presented at conferences and published in international peer-reviewed journals. TRIAL REGISTRATION NUMBER: NCT05386017; Pre-results.

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According to the main international guidelines, patients with obesity and psychiatric/psychological disorders who cannot be addressed to surgery are recommended to follow a nutritional approach and a psychological treatment. A total of 94 patients (T0) completed a battery of self-report measures: Symptom Checklist-90-Revised (SCL-90-R), Barratt Impulsiveness Scale-11 (BIS-11), Binge-Eating Scale (BES), Obesity-Related Well-Being Questionnaire-97 (ORWELL-97), and Minnesota Multiphasic Personality Inventory-2 (MMPI-2). Then, twelve sessions of a brief psychodynamic psychotherapy were delivered, which was followed by the participants completing the follow-up evaluation (T1). Two groups of patients were identified: Group 1 (n = 65), who fully completed the assessment in both T0 and T1; and Group 2-dropout (n = 29), who fulfilled the assessment only at T0 and not at T1. Machine learning models were implemented to investigate which variables were most associated with treatment failure. The classification tree model identified patients who were dropping out of treatment with an accuracy of about 80% by considering two variables: the MMPI-2 Correction (K) scale and the SCL-90-R Phobic Anxiety (PHOB) scale. Given the limited number of studies on this topic, the present results highlight the importance of considering the patient's level of adaptation and the social context in which they are integrated in treatment planning. Cautionary notes, implications, and future directions are discussed.

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Thyroid hormones regulate metabolism and have a major impact in maintaining cardiovascular homeostasis. The purpose of our study was to examine the relation of thyrotropin (TSH) and thyroid hormones with cardiometabolic parameters in children and adolescents with obesity, overweight, and normal body mass index (BMI) before and after the implementation of a comprehensive, multidisciplinary, personalized, lifestyle intervention program for 1 year. One thousand three hundred and eleven (n = 1311) children and adolescents aged 2 to 18 years (mean age ± SD: 10.10 ± 2.92 years) were studied prospectively. Patients were categorized as having obesity (n = 727, 55.45%), overweight (n = 384, 29.29%) or normal BMI (n = 200, 15.26%) according to the International Obesity Task Force (IOTF) cutoff points. All patients received personalized guidance on diet, sleep, and physical activity at regular intervals throughout the 1-year period. Detailed clinical evaluation and hematologic, biochemical and endocrinologic investigations were performed at the beginning and the end of the study. Subjects with obesity had a more adverse cardiometabolic risk profile than subjects with overweight and normal BMI on both assessments. At initial evaluation, total T3 concentrations were positively associated with uric acid and HbA1C, and free T4 concentrations were negatively associated with insulin concentrations, while there was no association between TSH concentrations and cardiometabolic risk parameters. Following the 1 year of the multidisciplinary, lifestyle intervention program, the concentrations of lipids, HbA1C, ALT, and γGT improved significantly in all subjects. Changes in TSH concentrations were positively associated with changes in systolic blood pressure (SBP), glucose, triglycerides, and cholesterol concentrations. Changes in free T4 concentrations were negatively associated with changes in cholesterol and insulin concentrations. Furthermore, changes in T3 concentrations were positively associated with changes in HbA1C, glucose, uric acid, and triglyceride concentrations. These findings indicate that in children and adolescents with overweight and obesity, thyroid hormones are associated with indices conferring cardiometabolic risk.

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Negative habits persist in contemporary society that can sometimes result in overweight or the deterioration of body image. This study aimed to assess the suitability of a nutritional and psychosocial intervention as part of an interdisciplinary approach to improve the perception of body image and increase the self-esteem of individuals who are overweight or obese. A total of 55 participants (25 men and 30 women) were included in this quasi-experimental intervention study. Measurements were taken as part of an ambulatory treatment to obtain values for weight, self-esteem, and body image perception using the Rosenberg scale and the Body Self-Esteem scale. At the end of the intervention and after one year, the weight reductions reached an average of 13.4 kg, positive self-image perception improved from a mean of 88.73 at pretest to 148.02 at follow-up, and self-esteem improved from a mean of 22.6 to 32.6. These were all statistically significant changes (p < 0.001). The model is effective in terms of weight reduction, together with improved levels of self-esteem and favorable perceptions of body image.

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Background: Determine the effects of a multifactorial lifestyle intervention on physical activity (PA), BMI and health-related quality of life (QoL) in obese and overweight adolescents. Methods: Nine schools in India were clustered randomly in a 12-month study with students allocated to a multifactorial intervention (MFI), or exercise only (EX) or control (CON) group. Participants were adolescents aged 11-16 years (n=671). In the MFI group, adolescents and their parents received lifestyle education using a validated booklet combined with a PA intervention for school students. The EX group received school-based PA only; the CON group continued regular activities. Primary outcomes were PA levels measured with the PAQ-A, and BMI; the secondary outcome was health-related QoL. A linear regression statistical model was used to analyse time, group effects and interactions, with Bonferroni correction for within-group differences at baseline (T0) and at 12-weeks (T1) (post-intervention), 6-month (T2) and 12-month (T3) follow-ups. Results: Significant time and group effects observed for all groups with PA scores (p<0.001), with MFI group having largest increase in PA; with BMI (p<0.001) and MFI showing the least gain in BMI; and HRQOL (p<0.001), with MFI group showing greatest improvement in scores. There were significant increases in PA at T1 and T3 time-points with the EX group, and at T3 time-point only for MFI and CON, with MFI group showing largest increase in HRQOL scores. BMI increased significantly for all groups at T2 (MFI p=0.001, EX p<0.001) and T3 (p<0.001), while HRQOL increased significantly for both MFI and EX at both follow-ups (p<0.001). Conclusions: School-based lifestyle MFI was more effective for improving PA, lifestyle behaviours and HRQOL than exercise alone for adolescents, although BMI was not reduced. MFI with PA could be an effective school-based approach for behaviour modification but BMI has limitations for measuring body composition changes. Registration: CTRI/2019/04/018834 (30/04/2019).

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OBJECTIVE: The objective of this study was to project the cost-effectiveness of implementing the Healthy Weight Clinic (HWC), a primary care-based intervention for 6- to 12-year-old children with overweight or obesity, at federally qualified health centers (FQHCs) nationally. METHODS: We estimated intervention costs from a health care sector and societal perspective and used BMI change estimates from the HWC trial. Our microsimulation of national HWC implementation among all FQHCs from 2023 to 2032 estimated cost per child and per quality-adjusted life year (QALY) gained and projected impact on obesity prevalence by race and ethnicity. Probabilistic sensitivity analyses assessed uncertainty around estimates. RESULTS: National implementation is projected to reach 888,000 children over 10 years, with a mean intervention cost of $456 (95% uncertainty interval [UI]: $409-$506) per child to the health care sector and $211 (95% UI: $175-$251) to families (e.g., time participating). Assuming effect maintenance, national implementation could result in 2070 (95% UI: 859-3220) QALYs gained and save $14.6 million (95% UI: $5.6-$23.5 million) in health care costs over 10 years, yielding a net cost of $278,000 (95% CI: $177,000-$679,000) per QALY gained. We project greater reductions in obesity prevalence among Hispanic/Latino and Black versus White populations. CONCLUSIONS: The HWC is relatively low-cost per child and projected to reduce obesity disparities if implemented nationally in FQHCs.

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BACKGROUND: Exercise is known to provide multiple metabolic benefits such as improved insulin sensitivity and glucose control in individuals with type 2 diabetes mellitus (T2DM) and those at risk. Beyond the traditional exercise dose, exercise timing is perceived as a contemporary hot topic, especially in the field of T2DM; however, the number of intervention studies assessing exercise timing and glucose metabolism is scarce. Our aim is to test the effect of exercise timing (i.e., morning, afternoon, or evening) on the inter-individual response variability in glycemic control and related metabolic health parameters in individuals with T2DM and those at risk during a 12-week intervention. METHODS: A randomized crossover exercise intervention will be conducted involving two groups: group 1, individuals with T2DM; group 2, age-matched older adults with overweight/obesity. The intervention will consist of three 2-week blocks of supervised post-prandial exercise using high-intensity interval training (HIIT). Between each training block, a 2-week washout period, where participants avoid structured exercise, will take place. Assessments will be conducted in both groups before and after each exercise block. The primary outcomes include the 24-h area under the curve continuous glucose monitoring-based glucose. The secondary outcomes include body composition, resting energy expenditure, insulin response to a meal tolerance test, maximal aerobic capacity, peak power output, physical activity, sleep quality, and insulin and glucose levels. All primary and secondary outcomes will be measured at each assessment point. DISCUSSION: Outcomes from this trial will provide us additional insight into the role of exercise timing on the inter-individual response variability in glycemic control and other related metabolic parameters in two distinct populations, thus contributing to the development of more effective exercise prescription guidelines for individuals with T2DM and those at risk. TRIAL REGISTRATION: ClinicalTrials.gov NCT06136013. Registered on November 18, 2023.

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Exercise training is a valuable tool for improving body weight and composition in overweight or obese adults, which leads to a negative energy balance. It is relevant to consider whether exercise can help people lose weight or prevent weight gain because any energy expended in exercise increases the severity of hunger and promotes food consumption. Over the past decade, the identification of the circulating peptide ghrelin, which alerts the brain to the body's nutritional state, has significantly expanded our understanding of this homeostatic mechanism that controls appetite and body weight. To shed more light on this issue, we decided to investigate the effects of resistance and endurance training on plasma ghrelin and leptin levels. In addition, we sought to understand the mechanisms by which acute and chronic exercise can regulate hunger. This review analyzes studies published in the last fifteen years that focused on changes suffered by ghrelin, leptin, or both after physical exercise in overweight or obese individuals. Most studies have shown a decrease in leptin levels and an increase in ghrelin levels in these cases. Exercise regimens that support weight maintenance need further investigation.

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BACKGROUND: Coaching on Lifestyle (CooL) is a two-year healthcare intervention for people with overweight or obesity, stimulating weight reduction by promoting sustained healthier behavior. The objective of this study is to investigate the effects of CooL on participants' anthropometrics, personal factors and behavioral factors over the two-year timeframe of CooL. METHODS: A descriptive case series study, using a broad set of routinely collected data on anthropometrics, personal factors and behavioral factors of adults living across the Netherlands. The data were collected between November 2018 and December 2021 among participants of CooL (N = 746) at three moments during the intervention: at baseline (T0), at 8 months (T1) after completion of phase 1 and at 24 months (T2) after ending CooL. Changes over time were analyzed using paired t-tests comparing baseline to T1 and baseline to T2. In addition, potential differences on outcomes in subgroups based on education level, weight status and group size were examined using paired t-tests and ANOVA-tests. RESULTS: The results showed positive changes on all outcomes at 24 months compared to baseline. The largest effects were on perceived health, attentiveness towards meal size and meal composition (large effect size). Mean weight loss was 4.13 kg (SD 7.54), and mean waist circumference decreased with 4.37 centimeters (SD 8.59), indicating a medium to large effect size. Changes were consistent across subgroups varying in educational level, BMI at baseline and group size. CONCLUSION: The study demonstrated sustained weight-related effects of CooL over 24 months supporting its two-year duration. The results indicate that CooL, though not for every individual, is in general appropriate and effective for different group sizes and for a wide variety of participants regardless of level of education, or BMI at baseline. TRIAL REGISTRATION: Dutch Trial Register NTRNL6061 (13-01-2017). Registered at Overview of Medical Research in the Netherlands (OMON), via https://www.onderzoekmetmensen.nl/ .

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This systematic review aimed to establish the effectiveness of exercise interventions, alone or in combination with dietary modifications, on working memory (WM) in individuals living with overweight and obesity. A comprehensive literature search was conducted using the Scopus, PubMed, Springer-Link, RefSeek, and Cochrane Library databases to identify relevant publications up to January 18, 2024. Data on participants' characteristics, intervention settings, and key outcomes related to WM were extracted. The quality of the studies was assessed using the PEDro scale. A total of 15 articles met pre-established inclusion criteria, involving participants across nine countries with a range of 12-125 individuals and ages spanning from 6 to 80 years old. Among the studies analyzed, 10 exclusively investigated exercise interventions, whereas five explored the combined effects. Notably, 70% of the exercise interventions (7 out of 10) exhibited positive improvements in WM. Likewise, 60% of the combined interventions (3 out of 5) demonstrated favorable enhancements in WM. No differences were found between the two protocols. Common features between the protocols were identified and described. Both protocols showed favorable and promising effects on WM in this clinical population. Nonetheless, the limited evidence addressing the combination of exercise and diet in the same research approach reduces the generalizability of the findings. This review offers valuable insights for future clinical and research applications in people with overweight and obesity.

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BACKGROUND: Women with overweight (OW) and those with obesity (OB) tend to gain excessive weight during pregnancy, often resulting in adverse outcomes. The long-term effects of mobile health (mHealth) interventions on maternal and infant outcomes remain unclear. AIMS: To examine the effects of an mHealth intervention on OW and OB from the course of their pregnancy to six months postpartum. METHODS: A randomized controlled trial was conducted in northern Taiwan. Ninety-two pregnant women with a body mass index (BMI)of ≥25 kg/m2 were recruited from prenatal clinics at <17 weeks of gestation. Prepregnancy weight was baseline maternal weight, with data collected subsequently at the last assessment before childbirth and six months postpartum. The intervention group (IG) received the mHealth intervention, while the control group (CG) received standard antenatal care. The trial was registered on ClinicalTrials.gov (identifier: NCT04553731) with the initial registration date of September 16, 2020. FINDINGS: The IG tended to have a lower mean body weight than the CG at the last assessment before childbirth (82.23 kg vs 84.35 kg) and at six months postpartum (72.55 Kg vs 72.58 Kg). IG's newborn birth weight was significantly lower than CG's (3074.8 vs. 3313.6 g; p = 0.009). Regression analysis revealed that OB in IG had a significant reduction in weight before childbirth (ß = -7.51, p = 0.005) compared to OB in CG. Compared to OW in CG, both OW in IG (ß = -243.59, p = 0.027) and OB in IG (ß = -324.59, p = 0.049) were associated with decreased newborn birth weight. CONCLUSIONS: mHealth helped women with obesity to successfully manage their GWG and body weight before childbirth and newborns' birth weight, despite this effect not persisting to reduce weight retention at six months postpartum.

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Background: To systematically review the effects of aerobic exercise and resistance training on Metabolic Health in children and adolescents with overweight/obesity. Methods: Employing a retrieval strategy that combines subject terms and free terms, searches were conducted in the CNKI, WanFangData, VIP, PubMed, Web of Science, Embase, and Cochrane Library databases up to October 31, 2023. Results: A total of 29 studies involving 2,195 subjects were included. The combination of aerobic and resistance training significantly reduces body composition and metabolic health in children and adolescents with overweight or obesity, as evidenced by changes in various parameters (BMI, WC, FM, BF%, VO2max, TG, TC, HDL-C, LDL-C, HOMA-IR, FPG, INS). However, there were no significant differences observed in hs-CRP. Subgroup analyses further showed that changes in intervention measurement had a significant effect on the effectiveness of the intervention. Conclusion: Aerobic exercise combined with resistance training has a positive impact on the physical health of children and adolescents with overweight/obesity. The recommended exercise prescription is at least three sessions of more than 60 min per week for 12 weeks or more for better health benefits.

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BACKGROUND: Breastfeeding provides benefits for both mothers and babies. However, many women experience postpartum weight gain, unfavorable lipid profiles, and other postpartum problems that can adversely impact their overall quality of life (QoL). OBJECTIVE: To examine the effect of adding aerobic and resistive exercise to faradic stimulation and nutritional counseling on lipid profile and QoL in overweight breastfeeding women. SUBJECTS AND METHODS: Fifty-four breastfeeding women were randomly allocated into two equally sized groups. Group A underwent abdominal faradic stimulation along with nutritional counseling for 12 weeks, whereas Group B received identical faradic stimulation and nutritional counseling and engaged in a combined aerobic and resistive exercise program for the same duration. Before and after treatment, the following anthropometric measurements were evaluated: body mass index (BMI), waist-to-hip ratio (W/H); lipid profile analysis, such as high-density lipoprotein (HDL), low-density lipoprotein (LDL), and triglycerides (TG); and the Short Form 36 Health Survey Questionnaire (SF-36). RESULTS: All outcome measures demonstrated significant improvements within the two groups (p < 0.05). Group B showed more significant reductions in BMI, W/H ratio, and LDL, along with greater significant increases in the SF-36 domain scores for physical functioning, physical health problems, bodily pain, general health, energy/fatigue, social activity, mental health, and the total SF-36 score (p < 0.05) compared to group A post-treatment. However, there were no significant differences in HDL, TG, and the score of the emotional wellbeing domain of the SF-36 between the groups after treatment (p > 0.05). CONCLUSION: 12-week aerobic and resistive exercise is effective in reducing the BMI, W/H ratio, and LDL levels and enhancing the QoL in overweight breastfeeding women.

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In Mexico, 1 out of 3 schoolchildren aged 5 to 11 years is overweight or obese, which represents one of the main public health concerns, due to the fact that this condition in the child population is highly associated with the development of metabolic complications in adults. To date, dietary and physical activity interventions to prevent this problem have shown modest results worldwide. Biomedical studies in Mexico have shown that the pathophysiology of childhood overweight and obesity presents different molecular patterns, inflammation and oxidative stress, possibly associated with specific variants in the genome. However, the challenge is to achieve a secure characterization of this evidence so that it can be used in intervention studies aimed to improve the ability to predict and treat childhood overweight and obesity in Mexico. The biomedical challenge is to make knowledge a prevention strategy in families, in society and in the country, in order to fight the serious problem of obesity and its consequences.

En México 1 de cada 3 escolares de 5 a 11 años presenta sobrepeso u obesidad, lo cual representa una de las principales preocupaciones de salud pública, debido a que en la población infantil este padecimiento se asocia altamente con el desarrollo de complicaciones metabólicas en el adulto. Hasta el momento las intervenciones dietéticas y de actividad física para prevenir este problema han mostrado resultados modestos a nivel mundial. Los estudios biomédicos en México han demostrado que la fisiopatología del sobrepeso y la obesidad infantil presenta diferentes patrones moleculares, de inflamación y de estrés oxidativo, posiblemente asociados a variantes específicas en el genoma. Sin embargo, el reto es lograr la caracterización segura de estas evidencias para que sea posible emplearlas en los estudios de intervención encaminados a mejorar la capacidad de predicción y tratamiento del sobrepeso y la obesidad infantil en México. El reto biomédico es hacer del conocimiento una estrategia de prevención en las familias, en la sociedad y en el país, a fin de combatir el grave problema de la obesidad y sus consecuencias.

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OBJECTIVES: To discuss the social, psychological, and access barriers that inhibit weight loss, and to propose steps and initiatives for addressing the growing obesity epidemic. STUDY DESIGN: Narrative review of the obesity epidemic in the US and associated racial/ethnic and socioeconomic disparities. METHODS: An internet search of relevant studies and government reports was conducted. RESULTS: Obesity is a significant health crisis affecting more than 123 million adults and children/adolescents in the US. An estimated 1 in 5 deaths in Black and White individuals aged 40 to 85 years in the US is attributable to obesity. Obesity puts individuals at elevated risk for type 2 diabetes, cardiovascular disease, chronic kidney disease, gastrointestinal disorders, nonalcoholic fatty liver disease, cancer, respiratory ailments, dementia/Alzheimer disease, and other disorders. In the US, significantly more Black (49.9%) and Hispanic (45.6%) individuals are affected by obesity than White (41.4%) and Asian (16.1%) individuals. Health care costs for obesity account for more than $260 billion of annual US health care spending-more than 50% greater in excess annual medical costs per person than individuals with normal weight. CONCLUSIONS: Addressing the obesity epidemic will require a multifaceted approach that focuses on prevention, treatment, and reducing the impact of stigma. Continued advocacy and education efforts are necessary to make progress and improve the health and well-being of individuals affected by obesity.

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OBJECTIVE: The objective of this study was to evaluate the efficacy of a mobile health (mHealth)-delivered behavioral intervention on changes in postpartum weight and cardiometabolic risk factors (blood pressure [BP], lipids, and hemoglobin A1c) over 12 months. METHODS: A randomized controlled trial of 300 African American postpartum people with overweight and obesity enrolled in Philadelphia Women, Infants, and Children (WIC) clinics was conducted. Participants were randomized to usual WIC care (n = 151) or a 12-month mHealth-delivered intervention (n = 149) comprising behavior change goals, interactive self-monitoring text messages, and counseling support. RESULTS: Intervention and usual-care participants did not significantly differ in 12-month mean postpartum weight change (1.1 vs. 1.6 kg, p = 0.5; difference -0.6 kg, 95% CI: -2.3 to 1.2). However, high intervention engagement led to weight loss compared with weight gain among those who were less engaged (-0.6 vs. 2.4 kg, p = 0.01; difference -3.0 kg, 95% CI: -5.4 to -0.6). The intervention reduced systolic BP relative to usual care (-1.6 vs. 2.4 mm Hg, p = 0.02; difference -4.0 mm Hg, 95% CI: -7.5 to -0.5), but this effect did not extend to other cardiometabolic risk factors. CONCLUSIONS: Among African American postpartum people enrolled in WIC, an mHealth-delivered intervention reduced systolic BP but not additional cardiometabolic risk factors or weight. Intervention participants with high engagement had significantly better postpartum weight outcomes, and thus, next steps include addressing barriers to engagement.

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OBJECTIVE: The American Academy of Pediatrics recommends that pediatric practices help families make lifestyle changes to improve BMI, but provider time and access to treatment are limited. This study compared the effectiveness of two pediatric practice-based referral interventions in reducing BMI. METHODS: In this cluster-randomized clinical trial, 20 pediatric primary care practices were randomized to telephonic coaching (Fitline Coaching) or mailed workbook (Fitline Workbook). Parents and their 8- to 12-year-old children with BMI ≥ 85th percentile completed assessments at baseline and at 6 and 12 months post baseline. Primary outcomes were 12-month BMI percentile and z score. RESULTS: A total of 501 children and their parents received Fitline Coaching (n = 243) or Fitline Workbook (n = 258); 26.8% had overweight, 55.4% had obesity, and 17.8% had severe obesity. Mean (SD) age was 10.5 (1.4), and 47.5% were female. BMI percentile improved in both groups; 12-month decline in continuous BMI z score was not statistically significant in either group. However, 20.8% of telephonic coaching participants and 12.4% of workbook participants achieved a clinically significant reduction of at least 0.25 in BMI z score, a significant between-group difference (p = 0.0415). CONCLUSIONS: Both low-intensity interventions were acceptable and produced modest improvements in BMI percentile. One in five children in the telephonic coaching condition achieved clinically meaningful BMI z score improvements. However, more research is needed before such a program could be recommended for pediatric primary care practice.

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