What is it for...
In fact, rubber has the characteristic of having greater elasticity than leather and this generates some interesting peculiarities at the moment of contact with the kicking foot.
The first concerns the contact time between the foot and the ball itself.
This is a longer contact time than that experienced with a leather ball, which allows the ball to accumulate a greater elastic return force in the subsequent phase of detachment from the foot and consequent acceleration.
A bit like when the rubber bands of a slingshot are “pulled”, which accumulate force that is released in the subsequent “launch” phase.
The rubber ball is more sensitive than the regular one to the movement of the air inside it “internal to the ball”.
The sudden contact between the foot and the ball tends to momentarily “deform” the sphere, causing a particular movement of air “internal” to the ball which makes its trajectory unpredictable and completely different compared to a leather ball.
For example: balls kicked inwards start straight and then widen towards the post.
This occurs when the acceleration phase of the sphere ends, also amplified by the elastic effect due to the material used (rubber).
Balls kicked out of play tend to move away from the goal at the start, then return towards it as they lose speed.
The ball kicked upwards remains suspended in the air for longer, “lengthening” its trajectory but falling behind the goalkeeper in an even more decisive and sudden manner.
Obviously, the lower the weight of the ball, the greater the variation in trajectory that results.
In this regard, we believe it is appropriate to use lighter balls to shoot from short distances, which force the goalkeeper to make very quick saves.
The ideal distance for carrying out these exercises varies from six to eight metres.
Inside this space the ball maintains the “elastic effect” due to the material it is made of, not being influenced by air friction and the deformation of the sphere.
The resulting conclusions are therefore rapid, and the mass of the ball upon contact with the goalkeeper is more influenced by speed rather than by the weight of the sphere. Therefore, the use of lighter balls can be proposed for close-range conclusions on goal that require lightning-fast motor responses.
Balls that have a weight closer to the official match weight are valid if proposed for shots from a greater distance (15-20 metres).
In this regard, they should be used in conjunction with leather balls, in order to increase the trajectory variables and therefore the resulting motor responses.
An increase in trajectory variables allows the athlete to improve not only his adaptation capabilities, but also to “reinforce” the memorization of the “generalized motor program” in its parameters of speed and amplitude of movement.
A final consideration concerns balls that are heavier than the match ball.
More than the others (especially if kept slightly deflated) they amplify the contact times between the foot and the ball.
Furthermore, being sufficiently heavy, they are able to overcome air friction more easily.
Our idea is to propose them by forcing the goalkeeper to intervene on the ball, without using a dive, but concentrating only on "reading" the movement of the foot and the kicking limb as well as on the posture of the kicker, in order to predict in advance the type of conclusion on goal.
The amplification of the contact time between the foot and the ball should “help” the number one to understand this evaluation more easily.
These exercises should also be integrated with the normal soccer ball.
Let us remember in this regard that the greatest margins in terms of time can be recovered by reducing to the maximum the time needed to understand what the conclusion on goal will be.
Soccer System 2 Kit Contents
- Original "Pezzi" Soccer System Ø 22 cm 320 g x2
- Original "Pezzi" Soccer System Ø 22 cm 370 g x2
- Original "Pezzi" Soccer System Ø 22 cm 420 g x2
- Original "Pezzi" Soccer System Ø 22 cm 470 g x2
- Original "Pezzi" Soccer System Ø 22 cm 520 g x2
- Hand Pump small
- DVD Exercise Guide
- Exercises and instruction leaflet
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EAN8006531025026
