Means and standard deviations for grip, key pinch, palmer pinch and tip pinch strength following the use of stainless steel and silicone instruments are presented in Table I.
There was also an improvement in palmer pinch and tip pinch strength between using stainless steel and silicone instruments, although these findings were not statistically significant.
There were no statistically significant differences in palmer pinch or tip pinch between the stainless steel and silicone instruments.
We conducted three kinds of pinch tests: a tip pinch is the thumb tip to the index fingertip; a key pinch is the thumb pad to the lateral aspect of middle phalanx of index finger; a palmar pinch is the thumb pad to pads of the index and middle fingers.
Multiple regression analysis was used to evaluate factors that might affect grip strength such as height, body mass, BMI, tip pinch, key pinch, palmar pinch strength, total muscle mass, fat mass, fat free mass, and muscle mass of the upper extremity of dominant side.
Significant associations were found between grip strength and height, body mass, BMI and tip pinch, key, and palmar pinch strength and muscle mass of upper extremity, fat-free mass on the dominant side.