An investigation into the correlation between core muscle strength and flexibility of the rectus femoris, as well as quadriceps strength, among both normal-weight and obese patients with knee osteoarthritis.

The study aimed to investigate the relationship between core muscle strength, rectus femoris flexibility, and quadriceps strength in patients with knee osteoarthritis (OA), considering both obese and non-obese individuals. Participants aged between 40 and 70 were recruited based on knee OA grades 2 and 3. Demographic information was used to categorize participants into obese and non-obese groups. Subsequently, participants underwent assessments for core muscle strength, rectus femoris flexibility, and quadriceps strength, with the collected data compared between the two groups. Various outcome measures such as the Pressure Biofeedback Unit, Isokinetic Dynamometer, Ely’s Test, and Visual Analogue Scale (VAS) were employed for the assessments.

本研究旨在探讨膝骨关节炎（knee osteoarthritis, OA）患者的核心肌力、股直肌柔韧性与股四头肌肌力之间的关联，并同时纳入肥胖与非肥胖人群开展分析。研究招募了年龄介于40至70岁、膝骨关节炎分级为2级与3级的受试者。研究人员通过人口统计学信息将受试者划分为肥胖组与非肥胖组。随后对受试者开展核心肌力、股直肌柔韧性及股四头肌肌力的相关评估，并对两组间采集到的数据进行对比分析。本次评估采用了多种结局测量工具，包括压力生物反馈单元（Pressure Biofeedback Unit）、等速肌力测试仪（Isokinetic Dynamometer）、Ely试验（Ely’s Test）以及视觉模拟评分法（Visual Analogue Scale, VAS）。