Ahmadizad Sajad, Ghorbani Shahab, Ghasemikaram Mansour, Bahmanzadeh Mehdi
Department of Exercise Physiology, Faculty of Sport Sciences, University of Shahid Beheshti, Tehran, Iran.
Faculty of Physical Education and Sport Sciences, University of Arak, Arak, Iran.
Clin Biochem. 2014 Apr;47(6):417-22. doi: 10.1016/j.clinbiochem.2013.12.019. Epub 2013 Dec 29.
Resistance training (RT) had a positive effect on musculoskeletal, cardiovascular, and type 2 diabetes disease. Knowing about the influence of different types of RT on the adipokines involved in the insulin regulation could be useful for the treatment of insulin resistance or diabetes. Therefore, the purpose of this study was to compare the effects of nonperiodized vs. periodized RT on plasma adiponectin, leptin and insulin resistance index in overweight men.
Thirty two sedentary overweight men (mean ± SD; age, 23.4 ± 0.6 years) were allocated to one of the following (n=8) groups: control group (CON), nonperiodized (NP), linear periodized (LP) and daily undulating periodized (DUP) training groups. Subjects in training groups performed RT protocols 3daysperweek for 8 weeks. Blood samples were taken before and 72 h after the training period and were analyzed for plasma adiponectin, leptin, glucose, and insulin.
Insulin resistance decreased in all training groups but significant differences were only found between DUP and CON groups (P<0.05). However, after 8 weeks of RT no significant changes were observed in plasma adiponectin and leptin concentrations. Body fat percent and waist to hip ratio (WHR) decreased significantly (P<0.05) following training, whereas, no significant changes were detected in body mass and BMI (P>0.05). The maximum strength (1RM) for bench press and leg press increased after RT in all training groups (P<0.05).
Short-term periodized RT protocols can be an efficient training strategy for improving insulin resistance and muscular strength in overweight men, while, they have no significant influence on adiponectin and leptin.
抗阻训练（RT）对肌肉骨骼、心血管及2型糖尿病具有积极作用。了解不同类型的抗阻训练对参与胰岛素调节的脂肪因子的影响，可能有助于治疗胰岛素抵抗或糖尿病。因此，本研究旨在比较非周期性与周期性抗阻训练对超重男性血浆脂联素、瘦素和胰岛素抵抗指数的影响。
32名久坐不动的超重男性（平均±标准差；年龄，23.4±0.6岁）被分配到以下（n = 8）组之一：对照组（CON）、非周期性（NP）、线性周期性（LP）和每日波动周期性（DUP）训练组。训练组的受试者每周进行3天的抗阻训练方案，持续8周。在训练期开始前和结束后72小时采集血样，分析血浆脂联素、瘦素、葡萄糖和胰岛素。
所有训练组的胰岛素抵抗均有所降低，但仅在DUP组和CON组之间发现显著差异（P<0.05）。然而，抗阻训练8周后，血浆脂联素和瘦素浓度未观察到显著变化。训练后体脂百分比和腰臀比（WHR）显著降低（P<0.05），而体重和BMI未检测到显著变化（P>0.05）。所有训练组在抗阻训练后卧推和腿举的最大力量（1RM）均增加（P<0.05）。
短期周期性抗阻训练方案可能是改善超重男性胰岛素抵抗和肌肉力量的有效训练策略，同时，它们对脂联素和瘦素没有显著影响。
