JBM  Vol.2 No.9 , November 2014
Optimal Cutoffs of Grip Strength for Definition as Weakness in the Elderly
ABSTRACT

Objective: To indentify Optimal cutoffs of grip strength for definition as weakness in the elderly. Methods: Our study population comprised 1317 subjects (mean ± SD age: 67.6 ± 6.0 years; 44.3% men) from the Hangu area of Tianjin, China. Data collection includes general physical examination, biochemical indicators and questionnaire. Mobility limitation was defined as a 4-m walking speed < 0.8 m/s and grip strength represents muscle strength. According to the ROC curve model, the cut-off point of grip strength was calculated, when mobility limitation was selected as the target variables. Results: According to the results of ROC curve, In man, grip strength is lower than 32.45 kg, the strength is weaker, Sensitivity is 79.7% and Specificity is 64.9%, the AUC is 0.764 (p < 0.001); In women, grip strength is lower than 18.20 kg, the strength is weaker, Sensitivity is 53.3% and Specificity is78.1%, the AUC is 0.703 (p < 0.001). Conclusions: Cut points for weakness derived from this large, diverse sample of older adults may be useful to identify populations who may benefit from interventions to improve muscle strength and function.


Cite this paper
Dong, R. , Guo, Q. and Wang, J. (2014) Optimal Cutoffs of Grip Strength for Definition as Weakness in the Elderly. Journal of Biosciences and Medicines, 2, 14-18. doi: 10.4236/jbm.2014.29003.
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