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영어

The purpose of this study tried to find out the difference in muscle thickness and fatigue of the adductor pollicis muscle according to the pencil grip type using ultrasonography and goniometer. This study involved 32 men and women in their 20s who were divided into four groups according to each pencil grip type and participants repeatedly wrote the national anthem from verse 1 to verse 4 for 10 minutes of writing, the muscle thickness of the adductor pollicis muscle was measured using an ultrasonography, and the range of motion of thumb abduction and extension of the thumb's abduction and extension was measured using a goniometer. After 10 minutes of writing, there were significant changes in the muscle thickness of the adductor pollicis muscle and the range of motion of the extension and abduction, but two groups (Dynamic Quadrupod and Lateral Quadrupod) showed greater differences than the other two groups (Dynamic Tripod and Lateral Tripod) This study suggests that although all four pencil grip type affect the muscle thickness and fatigue of adductor pollicis muscle, two groups, Dynamic Quadrupod and Lateral Quadrupod, can have a much greater impact.