In healthy and obese patients with knee OA, a relationship study between core muscle strength with rectus femoris flexibility and quadriceps strength

Osteoarthritis (OA) is a prevalent joint disease associated with age, causing pain, disability, and reduced quality of life. Among OA cases, knee OA is most common, especially in older individuals with higher Body Mass Index (BMI), and females are more susceptible. Regular exercise has been shown to alleviate knee OA discomfort. This study aims to investigate the correlation between core muscle strength, rectus femoris flexibility, and quadriceps strength in knee OA patients, comparing obese and non-obese individuals. Methodology involves recruiting participants aged 40-70 with knee OA grades 2 and 3, categorized into obese and non-obese groups based on BMI. Assessments include core muscle strength, rectus femoris flexibility, and quadriceps strength using tools like the Pressure Biofeedback Unit, Isokinetic Dynamometer, Ely’s Test, and Visual Analogue Scale (VAS). Data analysis will compare variables between obese and non-obese groups.

骨关节炎（Osteoarthritis, OA）是一种与年龄相关的高发关节疾病，可引发疼痛、残疾并降低患者生活质量。在各类骨关节炎病例中，膝关节骨关节炎最为常见，尤其好发于体重指数（Body Mass Index, BMI）偏高的老年人群，且女性的易感风险更高。现有研究表明，规律运动可缓解膝关节骨关节炎带来的不适症状。本研究旨在探究膝关节骨关节炎患者的核心肌力、股直肌柔韧性与股四头肌力量之间的相关性，并对比肥胖与非肥胖群体的相关差异。本研究招募年龄介于40至70岁、膝关节骨关节炎分级为2级与3级的受试者，依据身体质量指数将其划分为肥胖组与非肥胖组。评估内容包括核心肌力、股直肌柔韧性与股四头肌力量，所用检测工具包括压力生物反馈仪、等速肌力测试仪、Ely试验以及视觉模拟评分法（Visual Analogue Scale, VAS）。数据分析将对比肥胖组与非肥胖组间的各项变量差异。