Categorization of handedness based on daily activity and hand strength performance in Sumatran society

Abstract

Abstract Handedness is an individual’s preference to use one hand performing activities such as cutting with a knife or writing. Handedness is divided into two, right-handed and left-handed. Handedness can be influenced by genetics, prenatal development, and parenting. This study aims to analyse the categorization of handedness based on self-confessed, 10 daily uni-manual activities and hand strength performance. This study was conducted for 1 month by visiting a crowd of more than two people and providing a consent sheet following the questionnaire, personal data questionnaire including sex and age, 10 daily activity questionnaires and power grip questionnaires accompanied by power grip measurements using a dynamometer. A total of 610 individuals were assessed. The study showed that handedness could be determined by assessing self-confessed, 10 daily uni-manual activities with addition of hand strength performance. The older a person was the stronger the power grip value, those with a right-handed preference had a greater right handgrip value. Age was found did not affect handedness.