Elbedewy Reem M S, El Said Salma M S, Taha Rana M
Geriatric Medicine and Gerontology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
J Multidiscip Healthc. 2020 Apr 28;13:387-392. doi: 10.2147/JMDH.S240502. eCollection 2020.
Hand grip strength (HGS) is gaining the attention of researchers and clinicians, including geriatricians as a readily available, inexpensive, and useful measure of muscle strength.
To identify the indicators of abnormal HGS as measured by a Jamar handheld dynamometer in community-dwelling Egyptian senior citizens.
The study was approved by the relevant ethical committee. This cross-sectional study included 200 randomly selected older adults of both sexes who attended geriatric and internal medicine outpatient clinics. Informed consent was obtained, and comprehensive geriatric assessment was performed, including assessment of the health-related quality of life by the 12-Item Short-Form Health Survey (SF-12).
HGS was measured, and values of 20 kg or less in females and 30 kg or less in males were considered abnormal.
IBM SPSS statistics v25.0 was used for data analysis. Data were expressed as the mean ± SD for quantitative parametric measures and as the number and percentage for categorical data. Student's -test, the chi-squared test, the diagnostic validity test, and multiple logistic regression analysis were performed. The ROC (receiver operating characteristic) curve was constructed, and the AUC (area under the curve) was also calculated.
The subjects' ages ranged from 60 to 95 years with a mean age of 69 ± SD 7.1 years. The sample consisted of 117 females (58.5%) and 83 males (41.5%). The chi-squared test showed that abnormal findings for grip strength were significantly more common among females than males (67.7% vs 32.3%). Student's -test showed that both height and weight were significantly lower among subjects with abnormal than normal HGS, while body mass index (BMI) showed a non-significant difference. Stepwise multiple logistic regression analysis showed that there was no actual relationship between sex and abnormality of HGS.
The best indicators of abnormal HGS were found to be a general health score below 25 points on the SF-12 and a height of less than 178 cm. As the values of general health and height decrease below those cut-off points, HGS decreases as well, and vice versa.
握力（HGS）作为一种易于获取、成本低廉且有用的肌肉力量测量指标，正受到研究人员和临床医生（包括老年医学专家）的关注。
确定在社区居住的埃及老年人中，使用Jamar手持测力计测量的异常握力指标。
该研究经相关伦理委员会批准。这项横断面研究纳入了200名随机选择的老年男女，他们均前往老年医学和内科门诊就诊。获得了知情同意，并进行了全面的老年医学评估，包括通过12项简短健康调查（SF - 12）评估与健康相关的生活质量。
测量了握力，女性握力值小于或等于20千克以及男性握力值小于或等于30千克被视为异常。
使用IBM SPSS statistics v25.0进行数据分析。数据以定量参数测量的均值±标准差表示，分类数据以数量和百分比表示。进行了t检验、卡方检验、诊断效度检验和多元逻辑回归分析。构建了ROC（受试者工作特征）曲线，并计算了AUC（曲线下面积）。
受试者年龄在60至95岁之间，平均年龄为69±标准差7.1岁。样本包括117名女性（58.5%）和83名男性（41.5%）。卡方检验表明，握力异常结果在女性中比男性更常见（67.7%对32.3%）。t检验表明，握力异常的受试者的身高和体重均显著低于正常握力者，而体重指数（BMI）无显著差异。逐步多元逻辑回归分析表明，性别与握力异常之间没有实际关系。
发现握力异常的最佳指标是SF - 12上的总体健康评分低于25分以及身高低于178厘米。随着总体健康和身高值降至这些临界点以下，握力也会下降，反之亦然。
