Fitness and weight cycling in relation to body fat and insulin sensitivity in normal-weight young women

Journal of the American Dietetic Association
Costas A AnastasiouStavros A Kavouras

Abstract

A direct link has been established between insulin resistance and obesity; however, the influence of body fat content on insulin sensitivity in normal-weight individuals has not been explored. The aim of this cross-sectional study was to examine differences in insulin sensitivity, glycemic control, and blood lipid levels in normal-weight, healthy participants differing in their body fat. Physical activity, cardiorespiratory fitness, weight cycling, nutrient intake, and eating behavior were also assessed. Two groups of normal-weight (body mass index <25) young, healthy women were recruited: a high-body-fat group with body fat >30% of body weight (n=15) and a low-body-fat group (fat < or =30%, n=17). Data were collected between November 2003 and March 2004. Participants were matched for age and body fat distribution (assessed by the waist-to-hip ratio). The high-body-fat group displayed lower values of insulin sensitivity compared to the low-body-fat group (1/homeostasis model assessment of insulin resistance 1.003+/-0.083 vs 1.385+/-0.158, respectively; P<0.05), whereas no differences were observed on blood lipid levels and glycemic control between groups. High-body-fat participants had lower cardiorespiratory fitness (25.2+/-1....Continue Reading

Citations

Jan 29, 2016·The Journal of Pediatrics·Wei-Ting LinChien-Hung Lee
May 9, 2013·European Journal of Clinical Investigation·Tomasz MiazgowskiKrystyna Widecka
Jun 10, 2015·Behaviour Research and Therapy·Costas A AnastasiouMary Yannakoulia
Feb 6, 2013·International Journal of Obesity : Journal of the International Association for the Study of Obesity·A Bosy-WestphalM J Müller
Dec 22, 2017·Journal of the Endocrine Society·Julie K BowerAbigail B Shoben
Feb 20, 2021·Archives of public health = Archives belges de santé publique·Young Ran Chin, Eun Sun So

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