title: Effects of high-sugar and high-fiber meals on physical activity behaviors in Latino and African American adolescents.
abstract: OBJECTIVE
  This crossover experimental study examined the acute effects of high-sugar/low-fiber (HSLF) vs. low-sugar/high-fiber (LSHF) meals on sedentary behavior (SB) and light-plus activity (L+) in minority adolescents with overweight and obesity.
  
  
  METHODS
  87 Latino and African American adolescents (mean age = 16.3 ± 1.2 years, mean BMI z-score = 2.02 ± 0.52, 56.8% Latino, 51.1% male) underwent two experimental meal conditions during which they consumed HSLF or LSHF meals. Physical activity and SB were measured using accelerometers, and blood glucose and insulin were collected every 30 minutes over 5 hours. Mixed models were used to examine the temporal trends of SB and L+, whether the temporal trends of SB and L+ differed by meal condition, and the influence of blood glucose and insulin on the activity behaviors.
  
  
  RESULTS
  SB and L+ fluctuated over time during the HSLF condition but were stable during the LSHF condition. SB and L+ were influenced by the blood glucose response to the HSLF meals. Insulin did not influence SB or L+ in either meal condition.
  
  
  CONCLUSIONS
  Sugar and fiber content of meals can have differing acute impacts on activity behaviors in minority adolescents with overweight and obesity, possibly due to differing metabolic responses.
authors.affiliation: Department of Preventive Medicine and Childhood Obesity Research Center, University of Southern California, Los Angeles, California, USA.
authors.forename: Gillian A
authors.initials: GA
authors.lastname: O'Reilly
authors.affiliation: Division of Cancer Prevention, National Cancer Institute, Bethesda, Maryland, USA.
authors.forename: Britni R
authors.initials: BR
authors.lastname: Belcher
authors.affiliation: Department of Nutritional Sciences, University of Texas at Austin, Austin, Texas, USA.
authors.forename: Jaimie N
authors.initials: JN
authors.lastname: Davis
authors.affiliation: Department of Preventive Medicine and Childhood Obesity Research Center, University of Southern California, Los Angeles, California, USA.
authors.forename: Lauren T
authors.initials: LT
authors.lastname: Martinez
authors.affiliation: Department of Preventive Medicine and Childhood Obesity Research Center, University of Southern California, Los Angeles, California, USA.
authors.forename: Jimi
authors.initials: J
authors.lastname: Huh
authors.affiliation: Department of Preventive Medicine and Childhood Obesity Research Center, University of Southern California, Los Angeles, California, USA.
authors.forename: Luz
authors.initials: L
authors.lastname: Antunez-Castillo
authors.affiliation: Department of Pediatrics, University of Southern California, Los Angeles, California, USA.
authors.forename: Marc
authors.initials: M
authors.lastname: Weigensberg
authors.affiliation: Department of Preventive Medicine and Childhood Obesity Research Center, University of Southern California, Los Angeles, California, USA.
authors.forename: Michael I
authors.initials: MI
authors.lastname: Goran
authors.affiliation: Center for Economic and Social Research, University of Southern California, Los Angeles, California, USA.
authors.forename: Donna
authors.initials: D
authors.lastname: Spruijt-Metz
mesh_terms: D000293:Adolescent; D001741:Black or African American; D018592:Cross-Over Studies; D004043:Dietary Fiber / Q000009:adverse effects*; D019422:Dietary Sucrose / Q000009:adverse effects*; D015444:Exercise / Q000502:physiology*; D006630:Hispanic or Latino; D006801:Humans; D008297:Male; D009765:Obesity / Q000209:etiology*; D050177:Overweight / Q000209:etiology*
chemical_list: D004043:Dietary Fiber; D019422:Dietary Sucrose