Prochor Piotr, Magnuszewski Łukasz, Zalewska Paulina, Świętek Michał, Wojszel Zyta Beata, Piszczatowski Szczepan
Department of Biomaterials and Medical Devices Engineering, Institute of Biomedical Engineering, Faculty of Mechanical Engineering, Bialystok University of Technology, 15-351 Bialystok, Poland.
Department of Geriatrics, Medical University of Bialystok, 15-089 Bialystok, Poland.
J Clin Med. 2025 May 7;14(9):3251. doi: 10.3390/jcm14093251.
: The role of the periarticular muscles of the knee joint in ensuring body balance is still ambiguous. Therefore, we conducted clinical and biomechanical assessments on 52 older adults (36 women and 16 men, age of 67.58 ± 7.30 years, body weight of 75.10 ± 13.42 kg, and height of 163.92 ± 8.80 cm) to determine the role of the knee muscles in balance maintenance. : The clinical examination included the Dizziness Handicap Inventory (DHI), the Geriatric Depression Scale (GDS), the Performance-Oriented Mobility Assessment (POMA), the Functional Reach Test (FRT), the Falls Efficacy Scale-International (FES-I), and bioimpedance parameters (skeletal muscle mass-SMM-and its derived parameter-Diff SMM). The biomechanical assessment involved parameters that characterize muscle torques of knee joint extensors and flexors in isokinetic and isometric conditions, as well as changes in the centre of pressure (COP) position while standing with eyes open and closed. : Based on treatment history and DHI results (>10 points), 26 participants were identified as having balance disorders, while the remaining participants formed the control group. Statistical analysis was performed to determine differences between the groups. The groups significantly differed in terms of the results obtained from the DHI ( < 0.001) and GDS ( = 0.04) questionnaires as well as FES-I ( < 0.001) and POMA ( = 0.002) tests. While SMM ( = 0.012) was similar in the groups, Diff SMM ( = 0.04) significantly differed. The multiple regression analysis confirmed the knee joint extensor parameters' significant role in predicting the COP path ( = 0.03 and = 0.04 for two assumed models). : The obtained results proved that the muscle torques of knee extensors can be used in the diagnostic process of older patients with balance disorders, indicating possible rehabilitation directions.
膝关节周围肌肉在确保身体平衡方面的作用仍不明确。因此，我们对52名老年人（36名女性和16名男性，年龄67.58±7.30岁，体重75.10±13.42千克，身高163.92±8.80厘米）进行了临床和生物力学评估，以确定膝关节肌肉在维持平衡中的作用。临床检查包括头晕残障量表（DHI）、老年抑郁量表（GDS）、功能导向性活动评估（POMA）、功能性伸展测试（FRT）、国际跌倒效能量表（FES-I）以及生物阻抗参数（骨骼肌质量-SMM-及其衍生参数-差异SMM）。生物力学评估涉及表征膝关节伸肌和屈肌在等速和等长条件下的肌肉扭矩的参数，以及睁眼和闭眼站立时压力中心（COP）位置的变化。根据治疗史和DHI结果（>10分），26名参与者被确定为有平衡障碍，其余参与者组成对照组。进行统计分析以确定两组之间的差异。两组在DHI（<0.001）和GDS（=0.04）问卷以及FES-I（<0.001）和POMA（=0.002）测试的结果方面有显著差异。虽然两组的SMM（=0.012）相似，但差异SMM（=0.04）有显著差异。多元回归分析证实膝关节伸肌参数在预测COP路径方面有显著作用（两个假设模型分别为=0.03和=0.04）。获得的结果证明膝关节伸肌的肌肉扭矩可用于平衡障碍老年患者的诊断过程，指明可能的康复方向。
