On the Ergonomical Technick for Evaluation on the Effects of Farming Implement on the Work Hardiness

Abstract

An attempt has been made to evolve some indexes, which would represent work hardiness, for the evaluation on the efects of farming implement on the work hardiness of two trimming tasks of melon in greenhouse operation.
These indexes were estimated from the trendgram of the rate of increase of heart rate during task phase on the operating subjects.
As the results of experiments, it is clarified that these indexes estimated from trendgram were changed in the case when operating subjects, status during task phase were changed into more adapted status for the subjects, Therefore, it is clarified that the effects of farming implements would be estimated by the changes of these indexes.