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The research which it sees slept with the upper grade person of 8 people the Expert In-line skater and Beginner In-line skater to waist measured the load quantity. where the attitude goes mad to the waist in the object and the research which sees an equipment development and the improvement which from In-line skates and all skates item it follows in waist protection in objective it was executed the conclusion which it follows hereupon with after words together escape it did 1. With the Expert person the E group 109.5.19 the B group 109.25.39 with by the body difference of the individual from elementary eclampsia stable hour standing up attitude the load quantity where the B group goes mad to the waist the enemy appeared with the thing. 2. Expert person volition skating(Riding) hour body angle L.U.L.A (125.259.41), R.U.L.A (1259.14) L.L.L.A (52.5217) R.L.L.A (52.52.17) T.A (36.5.89) with the whole attitude it hangs the waist but eight it gave a clasping hands and in the condition which is stabilized skating appeared with the fact that it does. 3. Beginner volition skating(Riding) hour body angle L.U.L.A (126.253.77), R.U.L.A (126.253.77) L.L.L.A (66.250.56) R.L.L.A (66.250.56) T.A (27.5.89) with the whole attitude it was an attitude where the center which hangs the waist but moves off rear of the leg and eight in the future came out and the attitude which a whole gives many load in vertebral standing up muscle it showed. 4. Expert volition skating(Riding) the attitude which is not in the waist and the load quantity which goes mad to hour waist 345.252.46Lb with skating it does and excessiveness widely known if an old hour it shows it exercises, the B group compared to with the fact that the excessiveness did not appear in the waist.