Effects of Shoulder Flexion on Grip Strength Measurement

Determine the effect of different shoulder position on grip strength measurement in healthy subjects

Grip strength is one of the hand functions which should be evaluated in every hand disability. it is widely accepted that grip strength provide an objective index of the functional integrity of the upper extremity. Grip strength is commonly used to evaluate the integrated performance of muscles by determining maximal grip force that can be produce in one muscular contraction.

Grip strength in 5 different positions of shoulder flexion with elbow extension was measured with the help of hand held dynamometer. 100 healthy subjects were included (50 males and 50 females).

Data analysis was done using spss 17.0 version software. Repeated measure ANOVA was done to know the effect of different positions on grip strength.

Statistical analysis shows the Mean value of grip strength, in 0° shoulder flexion is (29.2), 45° shoulder flexion is(27.31), 90° shoulder flexion (28), 135° shoulder flexion is(27.7), 180° shoulder flexion is(28.87). ANOVA was performed within subject the result showed F value(.495), significant value is.(, 740). The result shows significant differences in grip strength regarding with various position of shoulder in flexion.

The study concluded that grip strength is high in 0° shoulder flexion than the 180° shoulder flexion.