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:: Volume 5, Issue 3 (19 2011) ::
mrj 2011, 5(3): 30-40 Back to browse issues page
Prediction of grip strength in Iranian young healthy population
Taher Afsharnezhad 1, Farzaneh Saki2, Sadegh Rafei3, Mina Mallaei3
1- دانشکده تربیت بدنی و علوم و رزشی دانشگاه شهید بهشتی , afsharnezhad@shomal.ac.ir
2- دانشکده تربیت بدنی و علوم و رزشی دانشگاه تهران
3- دانشکده تربیت بدنی و علوم و رزشی دانشگاه گیلان
Abstract:   (7643 Views)

Background and aim: Grip strength (GS) is an important measure of general health to predict mortality, disability and function of the hand. The purpose of this study was to develop equations to predict grip strength based on several anthropometric measurements using a multiple regression analysis.
Materials and Methods: Four hundred and eleven males and 671 females college students, ages 18-30 years, in good health, participated voluntarily in this study. This sample was randomly assigned to the model-development (n=867) and cross-validation (n=215) groups. Four equations were developed by using data from the model development group, then cross-validated on the second group. A hand-held dynamometer was used to measure grip strengths. All anthropometric measurements such as hand anthropometry, forearm circumference (FC), lean body mass, skeletal muscle mass and arm muscle area were taken according to standard techniques.
Results: It was found that grip strength has a significant correlation with all anthropometric measurements. Forearm length (FL) was correlated to grip (68% explained variance) in a linear relationship, followed by upper limb length and SM. All four equations were confirmed by cross-validation. Because of simplicity and easy-to-measure the following equations were selected for prediction grip: Dominant hand, A) 0.464×Age(yr)+0.392×Height(cm)+0.681×BMI-13.035×Sex(0 for men and 1 for women)-46.160, B) 0.029×FC×FL-8.634×sex+13.872 Non-dominant hand: C) 0.347×Age+0.386× Height+0.657×BMI-13.313×Sex-44.243, D) 0.029×FC×FL-8.752×sex+13.788.
Conclusion: The six easy-to-measure cofactors sex, age, height, BMI, forearm length and forearm circumference provide a highly accurate prediction of normative grip strength.

Keywords: Grip strength, Prediction equations, Young population, Hand anthropometry, Body composition
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Type of Study: Research | Subject: General
Received: 2011/05/28 | Accepted: 2011/07/3 | Published: 2013/07/13
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Afsharnezhad T, Saki F, Rafei S, Mallaei M. Prediction of grip strength in Iranian young healthy population. mrj. 2011; 5 (3) :30-40
URL: http://mrj.tums.ac.ir/article-1-63-en.html

Volume 5, Issue 3 (19 2011) Back to browse issues page
فصلنامه توانبخشی نوین Journal of Modern Rehabilitation
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