Insulin resistance markers alterations after two different models of periodized resistance training in overweight women
Poster Presentation
Paper ID : 1085-SSRC
Authors
Department of Exercise Physiology, Ilam Branch, Islamic Azad University, Ilam, Iran
Abstract
Background & Objective: Periodization refers to organized changes in the intensity and volume of training to maximize the adaptations of the neuromuscular system. Two proposed models to periodize resistance training are linear and non-linear (LP and NLP). LP is often characterized by low-intensity and high-volume training initially, as training progresses, intensity increases, and volume is reduced accordingly. In NLP, periodization the volume and intensity of exercise change from one session to the next. Periodized resistance training is recommended for reducing insulin resistance in diabetic and nondiabetic subjects, although it is unclear which one is better. Thus, we compared the effects of 12 weeks of LP and NLP on insulin, glucose, and insulin resistance index in a group of overweight women.
Methodology: Forty-two overweight women who were matched in age, physical activity level, and BMI and were randomly assigned to a LP (N=15, age: 40.4±5.5 year, BMI: 30.3±3.6 kg/m2), NLP (N=15, age: 35.9±5.9 year, BMI: 28.4±2.6 kg/m2) or control (N=12, age: 38.3±6.9 year, BMI: 27.3±4.2 kg/m2) groups. The volume-matched resistance training programs were performed for 12 weeks in three sessions weekly. Before and after the training, samples were taken in a fasting state to measure the biochemical variables.
Findings: Both training led to a significant reduction in insulin resistance index compared with the control group (both, P<0.05), but this improvement in NLP was higher than in LP (P=0.001). NLP was the only exercise that could decrease fasting insulin levels compared to the control group (P=0.002). However, no significant change was found for fasting glucose levels after training programs (both, P>0.09). Also, both LP and NLP groups had a similar significant decrease and increase in the abdominal circumference, and maximal strength of seated row exercise compared to the control group, respectively (P<0.05).
Conclusion: Based on the obtained results, it can be suggested that NLP may be a better protocol for reducing insulin resistance among overweight women. Therefore, overweight women can perform resistance training with a nonlinear periodization to more improve metabolic markers.
Methodology: Forty-two overweight women who were matched in age, physical activity level, and BMI and were randomly assigned to a LP (N=15, age: 40.4±5.5 year, BMI: 30.3±3.6 kg/m2), NLP (N=15, age: 35.9±5.9 year, BMI: 28.4±2.6 kg/m2) or control (N=12, age: 38.3±6.9 year, BMI: 27.3±4.2 kg/m2) groups. The volume-matched resistance training programs were performed for 12 weeks in three sessions weekly. Before and after the training, samples were taken in a fasting state to measure the biochemical variables.
Findings: Both training led to a significant reduction in insulin resistance index compared with the control group (both, P<0.05), but this improvement in NLP was higher than in LP (P=0.001). NLP was the only exercise that could decrease fasting insulin levels compared to the control group (P=0.002). However, no significant change was found for fasting glucose levels after training programs (both, P>0.09). Also, both LP and NLP groups had a similar significant decrease and increase in the abdominal circumference, and maximal strength of seated row exercise compared to the control group, respectively (P<0.05).
Conclusion: Based on the obtained results, it can be suggested that NLP may be a better protocol for reducing insulin resistance among overweight women. Therefore, overweight women can perform resistance training with a nonlinear periodization to more improve metabolic markers.
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