Human and Environmental Physiology Research Unit, University of Ottawa, Ottawa, Ontario, Canada.
Diabetes Care. 2013 Mar;36(3):537-42. doi: 10.2337/dc12-0963. Epub 2012 Nov 19.
In type 1 diabetes, small studies have found that resistance exercise (weight lifting) reduces HbA(1c). In the current study, we examined the acute impacts of resistance exercise on glycemia during exercise and in the subsequent 24 h compared with aerobic exercise and no exercise.
Twelve physically active individuals with type 1 diabetes (HbA(1c) 7.1 ± 1.0%) performed 45 min of resistance exercise (three sets of seven exercises at eight repetitions maximum), 45 min of aerobic exercise (running at 60% of Vo(2max)), or no exercise on separate days. Plasma glucose was measured during and for 60 min after exercise. Interstitial glucose was measured by continuous glucose monitoring 24 h before, during, and 24 h after exercise.
Treatment-by-time interactions (P < 0.001) were found for changes in plasma glucose during and after exercise. Plasma glucose decreased from 8.4 ± 2.7 to 6.8 ± 2.3 mmol/L (P = 0.008) during resistance exercise and from 9.2 ± 3.4 to 5.8 ± 2.0 mmol/L (P = 0.001) during aerobic exercise. No significant changes were seen during the no-exercise control session. During recovery, glucose levels did not change significantly after resistance exercise but increased by 2.2 ± 0.6 mmol/L (P = 0.023) after aerobic exercise. Mean interstitial glucose from 4.5 to 6.0 h postexercise was significantly lower after resistance exercise versus aerobic exercise.
Resistance exercise causes less initial decline in blood glucose during the activity but is associated with more prolonged reductions in postexercise glycemia than aerobic exercise. This might account for HbA(1c) reductions found in studies of resistance exercise but not aerobic exercise in type 1 diabetes.
在 1 型糖尿病中，一些小型研究发现抗阻运动（举重）可降低 HbA(1c)。在本研究中，我们检测了与有氧运动和无运动相比，抗阻运动对运动中和运动后 24 小时内血糖的急性影响。
12 名运动活跃的 1 型糖尿病患者（HbA(1c) 7.1 ± 1.0%）分别在 3 天内进行 45 分钟的抗阻运动（最大重复 8 次的 7 个动作三组）、45 分钟的有氧运动（60%Vo(2max)跑）或无运动。运动中和运动后 60 分钟内测量血浆葡萄糖，运动前、运动中和运动后 24 小时内通过连续血糖监测测量间质葡萄糖。
运动中和运动后，血浆葡萄糖的处理-时间交互作用（P < 0.001）。抗阻运动时，血浆葡萄糖从 8.4 ± 2.7 mmol/L 降至 6.8 ± 2.3 mmol/L（P = 0.008），有氧运动时，从 9.2 ± 3.4 mmol/L 降至 5.8 ± 2.0 mmol/L（P = 0.001）。无运动对照组无显著变化。在恢复期间，抗阻运动后葡萄糖水平无明显变化，但有氧运动后增加 2.2 ± 0.6 mmol/L（P = 0.023）。运动后 4.5 至 6.0 小时，间质葡萄糖平均水平显著低于有氧运动。
抗阻运动在活动期间引起的血糖初始下降较小，但与有氧运动相比，运动后血糖降低持续时间更长。这可能解释了在 1 型糖尿病中抗阻运动而非有氧运动研究中观察到的 HbA(1c)降低。
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