Comparison between muscle strength and flexibility of the lower limbs of individuals with and without type 2 diabetes mellitus

ABSTRACT To compare the muscle strength and flexibility of the lower limbs of individuals with and without T2DM. The method was a study of the types exposed and unexposed to T2DM. Individuals diagnosed with T2DM, individuals referred to electromyography, and those unexposed to T2DM were included. The exclusion criteria were: individuals over 70 years old; those who for some reason failed to complete one or both tests. The study population consisted of 64 individuals; 34 (53.1%) exposed to DM and 30 unexposed, 50 (78.1%) were female, the mean age was 60.7±7.1 and the dominant lower limb was right in 57 (89.1%) individuals. Comparing individuals with and without a diagnosis of DM, one observed a reduction in the flexion torque on the left at a 120 ° angular velocity in diabetics individuals compared with nondiabetic patients, 25.94±2.26 vs 33.79±2, 4nm, p=0.027, respectively. The reduction in dorsiflexion torque on the right, at a 60 ° angular velocity was observed in diabetics compared with nondiabetic patients, 10.95±0.89 vs. 13.95±0.96nm, p=0.033, respectively. When comparing diabetic individuals with and without a diagnosis of PDN, one observed a greater flexion deficit among neuropathic individuals when compared with non-neuropathic individuals, 46.57±9.47 vs 11.63±13.85nm, p=0.049, respectively. No statistically significant differences were found when comparing groups exposed and unexposed to T2DM, and neuropathic and non-neuropathic diabetics.摘要 本研究旨在对比伴与不伴2型糖尿病（Type 2 Diabetes Mellitus，T2DM）人群的下肢肌肉力量与柔韧性。研究采用暴露于T2DM与未暴露于T2DM的分组设计。纳入对象包括确诊T2DM者、被转诊行肌电图（electromyography）检查者以及未患T2DM者。排除标准为：年龄超过70岁者；因各种原因未能完成一项或两项测试者。本研究共纳入64名受试者，其中34名（53.1%）为糖尿病暴露组，30名为非暴露组；50名（78.1%）为女性，平均年龄为60.7±7.1岁，57名（89.1%）受试者的优势下肢为右侧。对比确诊糖尿病与非糖尿病人群，可见糖尿病患者在角速度120°时左侧屈曲力矩较非糖尿病患者降低，分别为25.94±2.26 N·m与33.79±2.4 N·m，P=0.027。在角速度60°时，糖尿病患者的右侧背屈力矩较非糖尿病患者降低，分别为10.95±0.89 N·m与13.95±0.96 N·m，P=0.033。对比伴与不伴糖尿病周围神经病变（Peripheral Diabetic Neuropathy，PDN）的糖尿病患者，可见神经病变患者的屈曲功能缺损程度更显著，分别为46.57±9.47 N·m与11.63±13.85 N·m，P=0.049。对比糖尿病暴露组与非暴露组，以及伴与不伴神经病变的糖尿病患者时，未观察到具有统计学意义的差异。