Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: How to enhance effectiveness of Direct Attack Judo throws   In this paper is performed an appraisal of the Olympic Sport Judo
effectiveness in the optics of Biomechanics. To broaden the classical view,the
field of experimentation is obviously the high level competition in which most
of rotational application can be found applied more or less instinctively by
high level Athletes. Considering the two biomechanical tools that are the
physical basis of judo throws it is possible to obtain such results from the
analysis of high competition application:Lever Techniques are enhanced in their
effectiveness in three ways: The rotational movements, strictly connected to
the Lever techniques mechanics achieving victory in competition, can be
extended to the unbalance phase. The rotational movements can be applied in a
totally new way putting away even the unbalance that is basic in the Lever
techniques. The Lever tool can be hybridized with the Couple tool to lower the
energy consumption. Couple Techniques are enhanced in their effectiveness also
in three ways: The Couple tool that doesnt need unbalance allowing uke body
rotate around his center of mass, is enhanced utilizing the Uke body smaller
resistance directions,normally summarized in Diagonal attacks. The vertical
rotational movements in the transverse plan with the axis in the sagittal plane
can be added to the Couple application with transverse rotation and axis in the
frontal plane to overcome some defensive resistance, mainly in the trunk and
leg group of Couple techniques,like Uchi Mata or O Soto Gari. The rotational
movements enhance the throwing action changing the mechanics of Couple into
Lever applying a Torque,both with the direction change of one force or the time
delay of his application. This analysis, expanded with a short physical
framework, clarifies hidden deep concepts and helps teacher and coaches in
their professional work.

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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th
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The categories of this paper are: math
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The categories of this paper are: q-fin
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The categories of this paper are: cs
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: supr-con
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ex