Quadriceps muscle strength after training with a cycloergometer in patients on hemodialysis

Abstract Introduction: Functional disability is common in patients with chronic kidney disease, especially in those on hemodialysis. Muscle strength can be evaluated by a dynamometer; however, no study using this technique on the quadriceps of patients undergoing hemodialysis was found in literature. Objective: To assess the effects of cycloergometer training on the quadriceps muscle strength of patients with chronic kidney disease undergoing hemodialysis. Method: This was a clinical trial including 46 patients, both men and women, over 18 years old who had been undergoing hemodialysis for more than six months and signed an informed consent form. Patients were allocated into two groups: intervention group (n = 22) and control group (n = 20). The intervention group underwent intradialytic training in a physical therapy protocol with the cycloergometer for two months, whereas the control group, in turn, was only reevaluated two months after the initial evaluation. All patients were assessed for demographic data at baseline and, two months later for quadriceps muscle strength by standardized dynamometry and with the use of a rigid belt and suction cups. Results: A significant increase was detected in quadriceps muscle strength in the right and left lower limbs in the intervention group when compared with the control group. Conclusion: Quadriceps muscle strength improved after patients with chronic kidney disease on hemodialysis underwent training with the cycloergometer.

摘要 引言：慢性肾脏病患者常出现功能障碍，接受血液透析者尤为高发。肌肉力量可通过肌力测试仪（dynamometer）进行评估，但目前文献中尚未见将该技术应用于血液透析患者股四头肌的相关研究。
研究目的：评估功率自行车（cycloergometer）训练对接受血液透析的慢性肾脏病患者股四头肌肌力的影响。
研究方法：本研究为临床试验，共纳入46名18岁以上、接受血液透析时长超过6个月且签署知情同意书的男女患者。将患者分为两组：干预组（n=22）与对照组（n=20）。干预组在透析期间按照物理治疗方案进行为期2个月的功率自行车训练，对照组仅在初始评估后2个月接受再次评估。所有患者均于基线时采集人口统计学资料，并于2个月后采用标准化肌力测试法，配合刚性腰带与吸盘，对股四头肌肌力进行评估。
研究结果：与对照组相比，干预组患者左右下肢的股四头肌肌力均出现显著提升。
研究结论：接受血液透析的慢性肾脏病患者经功率自行车训练后，其股四头肌肌力得到改善。