Abstract:
Biomechanical evaluation of long Jumpers and Triple jumpers in the Sri Lankan
context is extremely rare in the available research sources. The Set of High-speed
cameras (> 100 Hz) and human movement analyzing software are expensive in the
market and it will not an easy to use in competition mode. However, a set of highspeed
cameras (100 Hz) systematically can be handled to capture the movement
patterns of mentioned horizontal jumps during the National Selection (February
2022) at Sugathadasa Outdoor Stadium, Colombo. The major objective of this
analysis was to provide insight into the Sri Lankan athletes’ performance with the
kinematic parameters which should be considered for optimum performance. The
combination of speed, strength, and agility in an attempt to leap as far as possible
from the takeoff point is the main physical incident in the horizontal jumps in
Athletics. Also, run-up, takeoff, flight, and landing phases are critical in long
jumps. Here, the speed of the last two-three steps, Ground Reaction Force (GRF of
takeoff), Take of Height (TH), Takeoff Distance (TD), Takeoff Velocity (TV),
Takeoff Angle (TA), Movement Pattern in the free air, Maximum Vertical Height
(Hmax), Landing Distance (LD), and Landing Height (LH) are biomechanical
factors which will be influenced for the performance of long jumpers. For the triple
jumpers step, hop, and jump phases have to be scientifically compared in
competitive situations. The two biomechanical factors of Junior Record Holder
(Men’s Long Jump) have to be improved: vertical velocity of Take-off, Leg
extension before the landing (at 0.62 s in the flight phase). A long jumper has to
overcome major errors in kinematics: lost vertical velocity of take-off and poor
support leg knee angle 1680 (Nearly 1800 is better).
