RESEARCH ON THE SHORT-APPROACH TAKEOFF TECHNIQUE IN LONG JUMP

Abstract

PURPOSE Biomechanical characteristics of short-approach takeoff in long jump was investigated in comparison with that of the normal approach takeoff. RESULTS It was found that in contrast with an earlier start of deceleration in the normal approach, the approach velocity of short approach was 10% lower but increased at touchdown of the final step. Short approach running showed a longer takeoff time, greater knee bending, and greater leaning forward of the trunk angle. Force recordings indicated that the horizontal force impulse in the short approach was smaller than that in normal approach, but the vertical force impulse was greater.