The effects of increasing running speed on the displacement and Velocity of the center of pressure

The aim of this study was to determine the effect of increasing running speed on the displacement and velocity of the center of pressure. For this purpose, among professional runners with at least ۵ years of experience in athletics, ۲۸ elite runners participated in the present study voluntarily. After completing the informed consent form, the subjects first walked at a speed of ۱.۲ meters per hour to get acquainted with the treadmill. Then, slowly, the speed reached ۲.۵ meters per second, and after ۳ minutes of running at this speed, the data were recorded for about thirty seconds. The runners then ran on the treadmill at a speed of ۳.۵ m / s and then at a speed of ۴.۵ m / s. kinetics data were collected using Force platform (۱۵۰Hz). Center of mass displacement and Velocity were calculated directly from the force plate output in ۲ dimensions. Analysis of variance with repeated measures and Bonferroni post hoc test were also used to analyze the data during progressive speed using SPSS ۲۲ (p<۰.۰۵). significant differences were observed between variables in different speeds. The results of the post hoc test showed between running at a speed of ۲.۵ m/s with running at a speed of ۳.۵ m/s (p = ۰.۰۰۱), between running at a speed of ۲.۵ m/s and running at a speed of ۴.۵ m/s (p = ۰./ ۰۰۰) and there is a significant difference between running at a speed of ۳.۵ m/s and running at a speed of ۴.۵ m/s (p = ۰.۰۰۱) on the displacement and velocity of venter of pressure in runners. As the running speed increased, so did the displacement rate and pressure of the sole of the foot. As the running speed increased, so did the displacement and the pressure of the foot. The results confirm the effect of increasing running speed on the amount of movement and speed of foot pressure.

کلیدواژه ها:

Running speed ، Displacement ، center of pressure ، runner