Effects of period-specific strength training on the running economy of middle and long distance runners

In order to probe into effects of period-specific and traditional strength training on the running economy of middle and long distance runners, the authors selected 12 male middle and long distance runners in Athletics School of Xi'an Physical Education University as their research subjects, and revealed the following findings after a 12-week comparative experiment: as compared with non period-specific strength training, period-specific strength training had a more significant effect on improving the maximum oxygen intake and running economy of middle and long distance runners, and in terms of the degree of effect, its effect on the RE of 65%VO2 max was the most significant, followed by its effect on the RE of 75%VO2 max; its improvement on corresponding 5 000 m event performance was the greatest as well; comparatively, its improvement on the RE of 85%VO2 max was the smallest. The said findings indicated that period-specific strength training is conducive to improving the running economy of middle and long distance runners, provided with event characteristics. Period-specific strength straining can be carried out based on foundation period, maximum strength period, muscle stamina transformation period, maintenance period and transition period.