Thumbs Up: Anthropometry of the First Digit
测量了105名受试者拇指的最大和舒适角位移及可达范围，发现拇指可达范围与角位移无关，角位移与年龄无关，并给出了设计指南。
A need was identified for data concerned with maximum possible and maximum comfortable angular displacement of the thumb. These measures, along with thumb reach data, were collected from a sample of 105 subjects. It was found that thumb reach was not correlated with either maximum or most comfortable degree of angular displacement. In addition, angular displacement was not correlated with age. Design guidelines for angular displacement of the thumb are provided.