The Relationship between Energy Expenditure and Performance Index in the Task of Shovelling Sand

摘要

An examination is made of the relationship between the energy expenditure in litres of oxygen consumed per minute, as measured by the physiologist, and the performance index, as assessed by the work-study engineer. The data used in the analysis were obtained from 16 Bantu labourers engaged in shovelling sand at four different rates of work into a mine car of 1 ton capacity.