Document Type : Research Paper I Open Access I Released under (CC BY-NC) license
Authors
1 Assistant Professor, University of Mazandaran
2 Msc in Exercise Physiology
3 Associate Professor, University of Mazandaran
Abstract
Aim: The purpose of this study was to investigate the effects of aerobic exercise training on plasma vaspin concentration and insulin resistance index in sedentary overweight women.
Methods: Twenty six sedentary overweight women (aged: 43.1 ± 12.6 year, weight: 73.4 ± 10.0 kg, BMI: 29.1 ± 3.2 kg/m2) voluntarily participated in an 8-weeks aerobic exercise training program included running with 40- 80% reserve heart rate, 20- 45 min/day. Anthropometric and metabolic parameters in addition to plasma vaspin concentration were measured at baseline and after 8 weeks of the training program. To compare changes in variables according to body composition alterations, we divided the subjects into responders (defined as participants who lost ≥1% of baseline body fat percentage), and non-responders (defined as participants with no change or <1% reduction in body fat percentage).
Results: After 8 weeks of aerobic exercise training we did not find any significant changes in plasma vaspin concentration. Nevertheless, body weight and body fat percentage decreased significantly (P≤0.05) and plasma vaspin concentrations increased significantly (P≤0.05) in responders, but not in non-responders. Changes in plasma vaspin concentrations were significantly correlated with changes in plasma insulin and glucose levels, and insulin resistance index (HOMA-IR) only in non-responders.
Conclusions: This study indicated that reduction in body fat percentage induced by aerobic exercise training could be an effective factor to increase plasma vaspin levels in sedentary overweight women.
Keywords
)