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Association between cardiorespiratory fitness level and insulin resistance in adolescents with various obesity categories

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World Journal of Diabetes 2023年第7期14卷 1126-1136页

作者： Lavinia La Grasta Sabolic Marija Pozgaj Sepec bernardica valent moric Maja Cigrovski Berkovic Department of Pediatric Endocrinology and Diabetology University Hospital Centre Sestre milosrdniceZagreb 10000Croatia School of Medicine Catholic UniversityZagreb 10000Croatia Department for Sport and Exercise Medicine Faculty of Kinesiology University of ZagrebZagreb 10000Croatia

BACKGROUND An association between cardiorespiratory fitness(CRF)and insulin resistance in obese adolescents,especially in those with various obesity categories,has not been systematically *** is a lack of knowledge about the effects of CRF on insulin resistance in severely obese adolescents,despite their continuous *** To investigate the association between CRF and insulin resistance in obese adolescents,with special emphasis on severely obese *** We performed a prospective,cross-sectional study that included 200 pubertal adolescents,10 years to 18 years of age,who were referred to a tertiary care center due to *** to body mass index(BMI),adolescents were classified as mildly obese(BMI 100% to 120% of the 95^(th)percentile for age and sex)or severely obese(BMI≥120% of the 95^(th)percentile for age and sex or≥35 kg/m^(2),whichever was lower).Participant body composition was assessed by bioelectrical impedance analysis.A homeostatic model assessment of insulin resistance(HOMA-IR)was *** oxygen uptake(VO_(2)max)was determined from submaximal treadmill exercise *** was expressed as VO_(2)max scaled by total body weight(TBW)(mL/min/kg TBW)or by fat free mass(FFM)(mL/min/kg FFM),and then categorized as poor,intermediate,or good,according to VO_(2)max *** were analyzed by statistical software package SPSS(IBM SPSS Statistics for Windows,Version 24.0).P<0.05 was considered statistically *** A weak negative correlation between CRF and HOMA-IR was found[Spearman’s rank correlation coefficient(rs)=-0.28,P<0.01 for CRF_(TBW);(r_(s))=-0.21,P<0.01 for CRF_(FFM)].One-way analysis of variance(ANOVA)revealed a significant main effect of CRF on HOMA-IR[F(2200)=6.840,P=0.001 for CRF_(TBW);F_((2200))=3.883,P=0.022 for CRF_(FFM)].Subsequent analyses showed that obese adolescents with poor CRF had higher HOMA-IR than obese adolescents with good CRF(P=0.001 for CRF_(TBW);P=0.018 for CRF_(FFM)).Two-w

关键词： Cardiorespiratory fitness Insulin resistance Obese adolescents Severe obesity Obesity category

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