Division of General Internal Medicine, University of Colorado Denver School of Medicine, Aurora, CO 80045, USA.
Appl Physiol Nutr Metab. 2009 Oct;34(5):851-7. doi: 10.1139/H09-074.
Regular exercise is a cornerstone of diabetes treatment; however, people with type 2 diabetes (T2D) are commonly sedentary. It is possible that a harder rate of perceived exertion (RPE) during exercise for those with T2D as compared with nondiabetics may be a barrier to physical activity. This study examined RPE (Borg scale, ordinal range 6-20) during submaximal exercise at identical absolute work rates to test the hypothesis that women with T2D demonstrate harder RPE during exercise than nondiabetic controls. In a prespecified analysis of existing data from equivalently sedentary women, RPE during submaximal exercise was compared among women with uncomplicated T2D (n = 13, mean body mass index (BMI) 34.2, mean hemoglobin A1c 9%), overweight controls (OC, n = 13, mean BMI 30.7), and normal-weight controls (NWC, n = 13, mean BMI 23.1). Subjects performed three 7 min, constant-load exercise tests at 20 W and 30 W. Mixed-effects general linear modeling was used to test for differences in mean RPE estimates among groups with and without adjustment for relative work intensity, age, habitual physical activity, or BMI. Subjects with T2D perceived harder effort during bicycling exercise than controls, as measured by RPE at 20 W and 30 W (p < 0.05 for T2D vs. OC and for T2D vs. NWC). Adjusting for relative work intensity eliminated significant group RPE differences at 30 W, but group RPE differences at 20 W remained significant. Harder perceived effort during exercise may be a barrier to physical activity for those with T2D.
定期运动是糖尿病治疗的基石；然而，2 型糖尿病（T2D）患者通常久坐不动。对于 T2D 患者而言，与非糖尿病患者相比，运动时更高的感知用力程度（RPE）可能是身体活动的障碍。本研究在相同的绝对工作率下，对亚最大运动时的 RPE（Borg 量表，序数范围 6-20）进行了检查，以检验 T2D 女性在运动中表现出比非糖尿病对照者更用力的 RPE 的假设。在对同样久坐不动的女性现有数据的预设分析中，比较了单纯 T2D 女性（n=13，平均体重指数（BMI）34.2，平均糖化血红蛋白（HbA1c）9%）、超重对照组（OC，n=13，平均 BMI 30.7）和正常体重对照组（NWC，n=13，平均 BMI 23.1）在亚最大运动时的 RPE。受试者进行了三次 7 分钟的恒负荷运动测试，分别在 20 W 和 30 W。使用混合效应一般线性模型来检验在不考虑相对工作强度、年龄、习惯性体力活动或 BMI 的情况下，各组之间平均 RPE 估计值的差异。与对照组相比，T2D 患者在骑自行车运动时感知到更大的努力，这通过 20 W 和 30 W 的 RPE 来衡量（T2D 与 OC 和 T2D 与 NWC 相比，p<0.05）。调整相对工作强度消除了 30 W 时组间 RPE 差异的显著性，但 20 W 时的组间 RPE 差异仍然显著。运动时感知到更大的努力可能是 T2D 患者进行身体活动的障碍。
