Ibañez Javier, Izquierdo Mikel, Argüelles Iñaki, Forga Luis, Larrión José L, García-Unciti Marisol, Idoate Fernando, Gorostiaga Esteban M
Studies, Research and Sports Medicine Center, Government of Navarra, Pamplona-Navarra, Spain.
Diabetes Care. 2005 Mar;28(3):662-7. doi: 10.2337/diacare.28.3.662.
To evaluate the influence of a twice-weekly progressive resistance training (PRT) program, without a concomitant weight loss diet, on abdominal fat and insulin sensitivity in older men with type 2 diabetes.
Nine older men (aged 66.6 +/- 3.1) with type 2 diabetes participated in a 16-week PRT supervised program (50-80% of the one repetition maximum), for all main muscle groups. Basal glycemia, HbA(1c), diet, habitual physical activity, body composition, and upper/lower maximal strength were measured. Insulin sensitivity was determined according to Bergman's minimal model procedure and abdominal fat was obtained by computed tomography. The measurements were taken 4 weeks before training (-4), immediately before training (0), and at 8-week intervals (i.e., weeks 8 and 16) during the 16-week training period.
No significant variation was observed in any of the above selected parameters during the 4-week control period. After PRT, both leg and arm maximal strength increased significantly by 17.1 and 18.2%, respectively. Visceral and subcutaneous abdominal fat decreased significantly by 10.3% (from 249.5 +/- 97.9 to 225.6 +/- 96.6 cm(3), P < 0.01) and by 11.2% (from 356.0 +/- 127.5 to 308.6 +/- 118.8 cm(3), P < 0.01), respectively, while no changes were observed in body mass. PRT significantly increased insulin sensitivity by 46.3% (from 2.0 +/- 1.2 to 2.8 +/- 1.6 . 10(4) . min(-1) . muU(-1) . ml(-1), P < 0.01), whereas it significantly decreased (-7.1%, P < 0.05) fasting blood glucose (from 146.6 +/- 28.3 to 135.0 +/- 29.3 mg/dl). Finally, a 15.5% increase in energy intake (from 2,287.1 +/- 354.7 to 2,619.0 +/- 472.1 kcal/day, P < 0.05) was observed.
Two sessions per week of PRT, without a concomitant weight loss diet, significantly improves insulin sensitivity and fasting glycemia and decreases abdominal fat in older men with type 2 diabetes.
评估一项每周两次的渐进性抗阻训练（PRT）计划（不伴有减重饮食）对2型糖尿病老年男性腹部脂肪和胰岛素敏感性的影响。
9名患有2型糖尿病的老年男性（年龄66.6±3.1岁）参加了一项为期16周的PRT监督计划（为所有主要肌肉群进行最大重复次数的50 - 80%）。测量基础血糖、糖化血红蛋白（HbA₁c）、饮食、习惯性身体活动、身体成分以及上肢/下肢最大力量。根据伯格曼最小模型程序测定胰岛素敏感性，并通过计算机断层扫描获取腹部脂肪。在训练前4周（-4）、训练前即刻（0）以及16周训练期内每8周（即第8周和第16周）进行测量。
在4周的对照期内，上述所选参数均未观察到显著变化。PRT训练后，腿部和手臂的最大力量分别显著增加了17.1%和18.2%。内脏和皮下腹部脂肪分别显著减少了10.3%（从249.5±97.9立方厘米降至225.6±96.6立方厘米，P<0.01）和11.2%（从356.0±127.5立方厘米降至308.6±118.8立方厘米，P<0.01），而体重未观察到变化。PRT使胰岛素敏感性显著提高了46.3%（从2.0±1.2升至2.8±1.6×10⁴·分钟⁻¹·微单位⁻¹·毫升⁻¹，P<0.01），同时使空腹血糖显著降低了7.1%（从146.6±28.3降至135.0±29.3毫克/分升，P<0.05）。最后，观察到能量摄入增加了15.5%（从2287.1±354.7千卡/天增至2619.0±472.1千卡/天，P<0.05）。
每周两次的PRT训练，不伴有减重饮食，可显著改善2型糖尿病老年男性的胰岛素敏感性和空腹血糖，并减少腹部脂肪。
