Physical working capacity and mile run performance in adolescent boys.

The degree of generality between the endurance characteristics of the one mile run and PWC170 tests was examined with a group of fifteen year old boys who performed both tests once a week for three weeks. A significant improvement in performance of both tests was found between trials 1 and 2, which was sustained between trials 2 and 3. These results suggest that norm scales regarding performance in both tests should be based on the average of at least two trials following a practice trial. The results of the present study also suggest that when average scores are used, rather than single scores, the amount of generality between the endurance characteristics of the one mile run and PWC170 test is high enough to allow physical working capacity to be predicted fairly accurately from performance in the one mile run.