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Evid Based Med doi:10.1136/eb-2012-101092
  • Prevention
  • Randomised controlled trial

Randomised trial of exercise dose in children reduces diabetes risk (as measured by insulin resistance) in both 20-min and 40-min doses

  1. Aaron L Carrel
  1. Department of Pediatrics, American Family Children's Hospital, University of Wisconsin, Wisconsin, USA
  1. Correspondence to: Dr Aaron L Carrel
    Department of Pediatrics, American Family Children's Hospital, University of Wisconsin, 600 Highland Avenue H4-436, Madison, WI 53792, USA; alcarrel{at}wisc.edu

Commentary on Davis CL, Pollock NK, Waller JL, et al. Exercise dose and diabetes risk in overweight and obese children: a randomized controlled trial. JAMA 2012;308:1103–12

Context

An increasing number of children are classified as obese and sedentary.1 Poor physical fitness and obesity contribute risk towards type 2 diabetes mellitus (T2DM).2 Unfortunately, the simple ‘cure’ for childhood obesity, ‘move more, eat less’, remains elusive. A constant stream of studies addressing this global health ‘epidemic’ have not led to significant progress, in part because add-on physical activity programmes do not compensate for the degree to which the environment, and our choices within it, has reduced physical movement in our daily routine. This problem is highlighted in schools, where physical education and active recess have been whittled away by economic constraints.

Methods

Davis and colleagues present an …