It is known that the risk of the industrial injury according to the age of workers is high in the low age workers and advanced age workers. And it is clarified that one of the reasons of the risk of advanced age workers is high, is decrease of the physical strength of them by aging. Then, for about 1000 workers, we surveyed the relation between the age and physical strength of workers, and this report is a summary of the result of the survey.
!!!All Science Journal Classification (ASJC) codes