Exercise-induced changes in body fat, upper leg skeletal muscle area, BMI and body weight in overweight people with risk of developing Type 2 Diabetes

  • Elisabeth Hansen Department of Neuroscience, Norwegian University of Technology and Science, Trondheim, Norway; Faculty of Education, North-Trøndelag University College, Norway
  • Bodil J. Landstad Department of Health Science, North-Trøndelag University College, Norway; Department of Health Sciences, Mid Sweden University, Sweden
  • Raymond Brønn Department of Radiology, Levanger Hospital, Norway
  • Kjell Terje Gundersen Faculty of Education, North-Trøndelag University College, Norway
  • Sven Svebak Department of Neuroscience, Norwegian University of Technology and Science, Trondheim, Norway
Keywords: BMI, resistance training, impaired glucose tolerance, percentage of body fat, skeletal muscle

Abstract

The study compared effects of maximal resistance training (MRT) versus endurance resistance training (ERT) in overweight people at risk of developing Type 2 Diabetes. Dependent variables included changes in body fat %, upper leg skeletal muscle area (left + right), BMI and body weight pre-to post intervention. Eighteen individuals, 33-69 years of age, were randomly assigned to one of two groups. Group 1 engaged in MRT three days/week over a four month period while members of Group 2 acted as controls. Later, Group 2 engaged in ERT three days/week over a four month period and the members acted as their own controls. Both interventions consisted of eight exercises. Pre- to post changes were significant for MRT with a reduction in BMI (p=0.013) and body weight (p=0.010), while percentage of body fat was significantly reduced (p=0.009) and skeletal muscle area increased (p=0.021) with ERT. The results support both approaches as interventions in primary prevention of obesity and consequently in reducing risk of Type 2 Diabetes.
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