| Start-Up Circuit Training Program Reduces Metabolic Risk in Latino Adolescents. | |
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MedLine Citation:
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PMID: 21502883 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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PURPOSE:: To test the effects of a circuit training (CT; aerobic + strength training) program, with and without motivational interviewing (MI) behavioral therapy, on reducing adiposity and type 2 diabetes risk factors in Latina teenagers. METHODS:: Thirty-eight Latina adolescents (15.8 ±1.1 yrs) who are overweight/obese were randomly assigned to: Control (C; n=12), CT (n=14) or CT+MI (n=12). The CT classes were held twice a week (60-90 minutes) for 16 weeks. The CT+MI group also received individual or group MI sessions every other week. The following were measured at pre- and post-intervention: strength by 1-repetition max; cardiorespiratory fitness (VO2max) by submaximal treadmill test; physical activity by accelerometry; dietary intake by records; height, weight, waist circumference; total body composition by DEXA; visceral adipose tissue (VAT), subcutaneous adipose tissue (SAT) and hepatic fat fraction (HFF) by Magnetic Imaging Resonance (MRI); glucose/insulin indices by fasting blood draw. Across intervention group effects were tested using repeated measures ANOVA with post-hoc pairwise comparisons. RESULTS:: CT and CT+MI participants, compared to Controls, significantly increased fitness (+16% & +15% vs. -6%; P=0.03), and leg press (+40% vs. +20%; P=0.007). Compared to Controls, CT participants also decreased waist circumference (-3% vs. +3%; P<0.001), SAT (-10% vs. 8%; P=0.04), VAT (-10% vs. +6%; P=0.05), fasting insulin (-24% vs. +6%; P=0.03) and insulin resistance (-21% vs. -4%; P=0.05). CONCLUSION:: CT may be an effective starter program to reduce fat depots and improve insulin resistance in Latino youth who are overweight/obese, while the additional MI therapy showed no additive effect on these health outcomes. |
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Authors:
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Jaimie N Davis; Lauren E Gyllenhammer; Amanda A Vanni; Mathew Meija; Amy Tung; E Todd Schroeder; Donna Spruijt-Metz; Michael I Goran |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-14 |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: - ISSN: 1530-0315 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-19 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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1Department of Preventive Medicine, Keck School of Medicine, University of Southern California and; 2 Division of Biokinesilogy and Physical Therapy; 3 Department of Physiology and Biophysics, Keck School of Medicine, University of Southern California. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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