| The jump throw is the most applied throwing technique in team-
handball (Wagner et al., 2008);
however, a comprehensive analysis of 3D-kinematics of the team-handball
jump throw is lacking. Therefore, the purpose of our study was: 1) to measure
differences in ball release speed in team- handball jump throw and anthropometric
parameters between groups of different levels of performance and (2) to
analyze upper body 3D-kinematics (flexion/extension and rotation) to determine
significant differences between these groups. Three-dimensional kinematic
data was analyzed via the Vicon MX 13 motion capturing system (Vicon Peak,
Oxford, UK) from 26 male team-handball players of different performance
levels (mean age: 21.2 ± 5.0 years). The participants were instructed to
throw the ball (IHF Size 3) onto a target at 8 m distance, and to hit the
center of a square of 1 × 1 m at about eye level (1.75 m), with maximum
ball release speed. Significant differences between elite vs. low level
players were found in the ball release speed (p < 0.001), body height
(p < 0.05), body weight (p < 0.05), maximal trunk internal rotation
(p < 0.05), trunk flexion (p < 0.01) and forearm pronation (p <
0.05) as well as trunk flexion (p < 0.05) and shoulder internal rotation
(p < 0.001) angular velocity at ball release. Results of our study suggest
that team-handball players who were taller and of greater body weight have
the ability to achieve a higher ball release speed in the jump throw, and
that an increase in trunk flexion and rotation angular velocity improve
the performance in team-handball jump throw that should result in an increase
of ball release speed.
Key
words: 3D-kinematics, angular velocity, ball throwing technique, ball
release speed.
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