James N. Roemmich

ORCID: 0000-0002-6270-9678
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About
Contact & Profiles
Research Areas
  • Obesity, Physical Activity, Diet
  • Eating Disorders and Behaviors
  • Adipose Tissue and Metabolism
  • Physical Activity and Health
  • Behavioral Health and Interventions
  • Children's Physical and Motor Development
  • Birth, Development, and Health
  • Sports Performance and Training
  • Nutritional Studies and Diet
  • Regulation of Appetite and Obesity
  • Urban Transport and Accessibility
  • Growth Hormone and Insulin-like Growth Factors
  • Diet and metabolism studies
  • Muscle metabolism and nutrition
  • Child Nutrition and Feeding Issues
  • Adipokines, Inflammation, and Metabolic Diseases
  • Heart Rate Variability and Autonomic Control
  • Biochemical Analysis and Sensing Techniques
  • Cardiovascular and exercise physiology
  • Consumer Attitudes and Food Labeling
  • Urban Green Space and Health
  • Physical Education and Training Studies
  • Hypothalamic control of reproductive hormones
  • Body Composition Measurement Techniques
  • Health and Lifestyle Studies

United States Department of Agriculture
2014-2024

Agricultural Research Service
2015-2024

Grand Forks Human Nutrition Research Center
2015-2024

North Dakota State University
2020

Old Dominion University
2019

Grand Forks Air Force Base
2016

University of North Dakota
2016

Concordia University
2016

Women & Children's Hospital of Buffalo
2012-2014

University at Buffalo, State University of New York
2005-2014

<h3>Objective</h3> To assess the effects of reducing television viewing and computer use on children's body mass index (BMI) as a risk factor for development overweight in young children. <h3>Design</h3> Randomized controlled clinical trial. <h3>Setting</h3> University hospital. <h3>Participants</h3> Seventy children aged 4 to 7 years whose BMI was at or above 75th percentile age sex. <h3>Interventions</h3> Children were randomized an intervention reduce their by 50% vs monitoring control...

10.1001/archpediatrics.2007.45 article EN Archives of Pediatrics and Adolescent Medicine 2008-03-01

Objective-Family-based treatments for pediatric obesity were developed over 25 years ago.Over that time, youth have become more obese and the environment obesiogenic, which may influence efficacy of weight control.Mixed-effects regression models used to compare programs initiated 20 ago current through 24-month followup, as well reanalyze 10-year outcomes previous research using contemporary measures analytic strategies. Main outcome measures-z-BMI percent overweight.Results-Results showed...

10.1037/0278-6133.26.4.381 article EN Health Psychology 2007-01-01

<h3>Background</h3> Family-based behavioral weight control treatment involves the parent in modification of child and eating activity change. <h3>Objective</h3> To assess if standardized body mass index (z-BMI) change predicts z-BMI <h3>Design</h3> Secondary data analysis based on changes from 3 family-based, randomized, controlled studies. Hierarchical regression models tested whether increased prediction through 24-month follow-up beyond other factors that influence change, such as age,...

10.1001/archpedi.158.4.342 article EN Archives of Pediatrics and Adolescent Medicine 2004-04-01

OBJECTIVE—Magnesium deficiency has been associated with insulin resistance (IR) and increased risk for type 2 diabetes in adults. This study was designed to determine whether obese children exhibit serum or dietary magnesium its potential association IR. RESEARCH DESIGN AND METHODS—We studied 24 nondiabetic (BMI ≥85th percentile) sex- puberty-matched lean control subjects &amp;lt;85th percentile). We measured magnesium, indexes of sensitivity, intake (using a food frequency questionnaire),...

10.2337/diacare.28.5.1175 article EN Diabetes Care 2005-05-01

To test whether the presence of a peer or friend increases motivation to be physically active in overweight and non-overweight youth laboratory setting.Youth as function social context was measured using computerized relative reinforcing value task earn points exchangeable for physical and/or sedentary activities.The (p<.001) increased youth's; active. The active, whereas this not case lean (p=.47). Participants biked greater distance than when alone (p<.001). Overweight alone, while...

10.1093/jpepsy/jsn071 article EN Journal of Pediatric Psychology 2008-06-24

The objective was to compare targeting increased eating of healthy foods vs. reducing intake high energy-dense within the context a family-based behavioral weight control program.Forty-one 8-12 year-old children >85th BMI percentile were randomly assigned 24-month treatment that targeted increasing fruits and vegetables low-fat dairy foods.Children in increase food group showed greater reduction zBMI compared reduce at 12- (-0.30 units -0.15 units, P = 0.01) 24- (-0.36 vs -0.13 0.04) month...

10.1038/oby.2007.61 article EN Obesity 2008-01-31

Objective The primary objective was to examine the associations between social context (the presence of peers, friends, and family members) physical activity intensity for overweight lean girls boys. Methods Participants this study included 10 boys (M = 13.4 years; SD .8) 13.8 =. 8). Twelve participants were 15th 85th BMI percentile (eight girls, four boys) eight youth at or above (six boys, two girls). reported on their whether solitary with others seven consecutive days. Results Children...

10.1093/jpepsy/jsm039 article EN Journal of Pediatric Psychology 2007-05-24

There is a growing interest in exploiting the induction of beige or "brite" (brown white) adipocytes (beigeing) to combat obesity and its comorbidities. However, there some uncertainty regarding best markers evaluate occurrence magnitude beigeing white adipose tissue mouse model.We evaluated transcript expression several thermoregulatory genes proposed employing cell culture, whole tissue, adipocyte stromal vascular fractions.Most tested with exception TMEM26 can discriminate from culture....

10.1186/s12986-016-0081-2 article EN cc-by Nutrition & Metabolism 2016-03-18

Background: Youth may choose to be sedentary rather than physically active. Purpose: The purpose of this study was use behavioral economics methods investigate how experimental changes in the amount behaviors influenced physical activity. Methods: Fifty-eight 8-to 16-year-old youth were studied a within-subject crossover design with three 3-week phases: baseline, increasing, and decreasing targeted by 25% 50%. Results: At boys more active girls (518.9 vs. 401.2 accelerometer counts/min, p =...

10.1207/s15324796abm2903_6 article EN Annals of Behavioral Medicine 2005-06-01

Roemmich, James N., Pamela A. Clark, Arthur Weltman, and Alan D. Rogol. Alterations in growth body composition during puberty. I. Comparing multicompartment models. J. Appl. Physiol. 83(3): 927–935, 1997.—A four-compartment (4C) model of was used as a criterion to determine the accuracy three-compartment (3C) two-compartment (2C) models estimate percent fat (%BF) prepubertal pubertal boys (genital I &amp; II, n = 17; genital III IV, 7) girls (breast 8; breast 15). The 3C water-density (3C-H...

10.1152/jappl.1997.83.3.927 article EN Journal of Applied Physiology 1997-09-01

Roemmich, James N., and Wayne E. Sinning. Weight loss wrestling training: effects on growth-related hormones. J. Appl. Physiol. 82(6): 1760–1764, 1997.—Adolescent wrestlers ( n = 9, 15.4 yr) recreationally active control males 7, 15.7 were measured before, at the end of, 3.5–4 mo after a competitive season to assess influence of dietary restriction Wrestlers had significant elevations preseason late for morning serum concentrations (mean 8 serial samples) growth hormone (GH; 2.9 ± 0.7 vs....

10.1152/jappl.1997.82.6.1760 article EN Journal of Applied Physiology 1997-06-01

To increase participation in physical activity, it is important to understand the factors associated with a child's choice be physically active or sedentary. The neighborhood and home environments may related this choice.To determine whether environment number of televisions are independently child activity television time.The associations on sedentary behaviors were studied 44 boys girls who wore accelerometers recorded their watching behaviors. Neighborhood variables measured using...

10.1207/s15324796abm3301_4 article EN Annals of Behavioral Medicine 2007-02-01

Little is known about the influence of adiposity and hormone release on leptin levels in children adolescents. We utilized criterion methods to examine relationships among sex steroids, body composition (4 compartment), abdominal visceral subcutaneous fat (magnetic resonance imagery), total (sum 9 skinfolds), energy expenditure (doubly labeled water), aerobic fitness, serum prepubertal pubertal boys ( n = 16; 13) girls 12; 15). The sum skinfolds accounted for more variance all [coefficient...

10.1152/ajpendo.1998.275.3.e543 article EN AJP Endocrinology and Metabolism 1998-09-01

Abstract Objective : Better adherence to treatment strategies in family‐based behavioral weight control programs may lead greater reduction and improved maintenance youth. This study assessed the influence of child parent self‐reported on changes 2‐year percentage overweight. Research Methods Procedures Participants included 8‐ 12‐year‐old children ≥ 85th BMI percentile their parents from 110 families taking part two randomized controlled studies. examined whether measured at 24 months...

10.1038/oby.2005.127 article EN Obesity Research 2005-06-01
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