Resistance Training Improves Cardiovascular Risk Factors in Obese Women Despite a Significative Decrease in Serum Adiponectin Levels |
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| Authors: | Javier Ibáñez Mikel Izquierdo Cristina Martínez‐Labari Francisco Ortega Ana Grijalba Luis Forga Fernando Idoate Marisol García‐Unciti José M Fernández‐Real Esteban M Gorostiaga |
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| Institution: | 1. Studies, Research and Sports Medicine Center, Government of Navarra, Pamplona, Spain;2. Department of Diabetes, Endocrinology and Nutrition. Institut d'Investigació Biomédica de Girona (IdIBGi) CIBER Fisiopatología de la Obesidad y Nutrición, Girona, Spain;3. Department of Clinical Biochemistry, Hospital of Navarra, Pamplona, Spain;4. Department of Endocrinology, Hospital of Navarra, Pamplona, Spain;5. Department of Radiology, Clinica San Miguel, Pamplona, Spain;6. Department of Nutrition and Food Sciences, Physiology and Toxicology, University of Navarra, Pamplona, Spain |
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| Abstract: | Increased circulating adiponectin and insulin sensitivity are usually observed after body fat loss induced by a weight‐loss diet. Progressive resistance training (PRT) without a concomitant weight‐loss diet significantly decreases visceral fat, thus improving insulin sensitivity. Therefore, the purpose of this study was to ascertain the effects of combined 16‐week PRT and weight‐loss diet on circulating adiponectin and insulin sensitivity index. Thirty‐four obese (BMI: 30–40 kg/m2) women, aged 40–60 year, were randomized to three groups: a control group (C; n = 9); a diet group (WL; n = 12) with a caloric restriction of 500 kcal/d; and a diet plus resistance training group (WL+RT; n = 13) with the same caloric restriction as group WL and a 16‐week supervised whole body PRT of two sessions/week. Both WL and WL+RT groups showed similar decreases in body mass (?6.3% and ?7.7%) and visceral fat (?19.9% and ?20.5%). WL resulted in an expected increase in circulating levels of adiponectin (P = 0.07) and insulin sensitivity. However, circulating total adiponectin decreased (P < 0.05) in WL+RT group, whereas an improvement in different cardiovascular risk factors (insulin sensitivity, low‐density lipoprotein cholesterol (LDL‐C), etc.) was observed. In conclusion, in obese women a 16‐week combined PRT and weight‐loss diet is accompanied by significant improvements in different cardiovascular risk factors in spite of a significant decrease of circulating adiponectin. |
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