![]() In the course of the entire double-support (i.e., the period when the vertical force on the right foot is not zero), the area under the curve is similar for the right foot and the left foot. What matters more in this figure is the (non-shared) total are under the curve which is shown in blue color for the right foot and gold color for the left foot. The force exerted on the right foot shows a big spike just after landing, but it is generally so brief, approximately 30 msec., that it will only have a small effect on the generation of angular momentum. ![]() Figure 1 shows the vertical force exerted on the right and left feet during a turn. al, 2007), a rudimental examination of those forces follows. Given that the forces exerted during the turns are mostly on the vertical (Murofushi et. the action of the feet, and particularly the right foot, from a dynamic point of view, will be discussed below. An observation of the action of the right foot in hammer throwers will show that some prefer to execute a "stomping" action, as that foot comes in contact with the ground to complete a turn, while others choose to bring it in contact with the ground in a "softer" or neutral fashion during that phase. The forces exerted by the feet on the ground will allow the thrower to, in turn, successfully impart the optimum amount of force on the hammer itself. The right foot spends a good part of the total turn time off the ground, the actual time depending primarily on the skill of the thrower and also the order of a particular turn. ![]() In this fashion, the left foot is always in contact with the ground. Originally Published in: Techniques Magazineĭuring the course of a hammer throw, the thrower will turn with the hammer three or four times alternating between double and single support.
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