The aim of this study is to find out the relationship between distance from joint axis to the hand-held dynamometer placing site and calculated force during isometric shoulder adductor strength examination using a hand-held dynamometer.

The subjects of this study were 20 normal male volunteers between 24 to 38 years of age, who were students at chungbuk national university college of medicine.

The results were as follows;

1) The calculated muscle force were different at 3 different placing sites.

2) But, the values of Torque were no significant difference at 3 different sites(p=0.8421).

3) There was significant correlation between force and distance(p<0.001).

4) The relationship between force(F) and distance(D) in shoulder adductor strength examination was

F(kg)=-0.47 D(cm)+37.94(r=-00.83, p<0.001)

Therefore, when examiner calculating the muscle force using a hand-held dynamometer, determination of correct and same placing site is very important in standard testing positions and procedures.

Keywords :Hand-held dynamometer, Force, Torque, Isometric, Hand-held dynamometer, Strength