FIELD: sports; training. SUBSTANCE: device has separated supporting members. Tension member 3 between them is made of flexible inextensible string passing through elastic shock absorbers 5. Shock absorbers 5 are shorter than the tension member. Additional inextensible string 2 with ball 1 is attached to the tension member in its middle. The operating length of string 2 is variable due to unit 4. EFFECT: enhanced effectiveness of training. 2 cl, 7 dwg
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