Strength and Nutrition Outcomes for Latino Adolescents

Inclusion Criteria: * Overweight (age- \& sex-specific body mass index ≥ 85th percentile based on CDC BMI growth charts \[US Department of Health and Human Services, 2000\], calculated by Epi Info Software, version 3.3) * Latino (both sets of grandparents must be of Latino heritage as defined by self-report; limited to Latinos to maintain a homogeneous sample and because Latinos are at increased risk of insulin resistance and type 2 diabetes.) If the participant or the parent is unsure of the country of origin of all 4 grandparents they will be excluded from the study. The participants and their families are not asked whether or not their grandparents are undocumented immigrants. Exclusion Criteria: * Presently taking medication(s) or diagnosed with any syndrome or disease that could influence dietary intake, exercise ability, body composition and fat distribution, or insulin action and secretion. * Previously diagnosed with any major illness since birth (e.g. severe intrauterine growth retardation, chronic birth asphyxia, cancer). * Children will not be eligible for participation if they have any diagnostic criteria for diabetes including polyuria, polydipsia with or without unexplained weight loss, fasting plasma glucose \> 126 mg/dl, or a 2-hour plasma glucose \>200 mg/dL during an oral glucose tolerance test. Children will also be excluded if they test positive for diabetes-related auto-antibodies, including ICA512 and GAD. Children testing positive for type 2 diabetes…