ديناميكية توزيع مركبي القدرة الميكانيكية خلال بعض ارتفاعات الوثب كأساس لوضع تدريبات موجهه

الملخص EN

The current research aims to identify the dynamics of distributing the two components of mechanical power through jumping heights as a basis for designing specific exercises.

This is through: identifying the differences between the two components of mechanical power through various heights on a box from stance and from motion in addition to identifying the differences between the two components of mechanical power through various heights on a hurdle from stance and from motion.

The researchers used the descriptive approach on a sample of four athletes from different games (high jump – soccer – basketball – volleyball) in Kafr El-Sheikh Sports Club and Tanta Sports Club with three trials each (total of 12 trials).

Results indicated that: For jumping over boxes from stance and motion: resultant velocity is significant at maximum intensity (100%) of the athlete.

Resultant force and resultant power are significant at (75%) of intensity as the best height for mechanical power.

There is a positive correlation between resultant force and mechanical power on all heights from stance and motion.

For jumping over hurdles from stance: resultant velocity is significant for (%) intensity on the instant of: damping start, damping end, pushing start and pushing end.

Instant of max height for body center of gravity was significant at (90%).

Resultant force and mechanical power are significant for (90% and 75%) intensities for all instants except for damping start as it was significant only at (100%).

For jumping over hurdles from motion: resultant speed was significant at (90%) intensity on all instants.

Resultant force and mechanical power were significant for (100%) intensity at damping start, damping end and pushing start, while it was significant at (75%) for pushing end and at (85%) for max height of body center of gravity.

There are positive correlations between resultant force and mechanical power on all height of the hurdle from stance and motion.