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Ground Reaction Forces and Throwing Performance in Elite and Novice Players in Two Types of Handball Shot

100%

Rousanoglou E., Noutsos K., Bayios I., Boudolos K.

Journal of Human Kinetics

2014

vol. 40

issue 1

49-55

The purpose of this study was to examine the differences in the ground reaction force (GRF) patterns between elite and novice players during two types of handball shots, as well as the relationships between throwing performance and the GRF variables. Ball velocity and throwing accuracy were measured during jump shots and 3-step shots performed by 15 elite and 15 novice players. The GRF pattern was recorded for the vertical and the anterior-posterior GRF components (Kistler forceplate type-9281, 750Hz). One-way ANOVA was used for the group differences and the Pearson coefficient for the correlation between throwing performance and GRF variables (SPSS 21.0, p ≤ 0.05). The elite players performed better in both types of shot. Both groups developed consistent and similar GRF patterns, except for the novices’ inconsistent Fz pattern in the 3-step shot. The GRF variables differed significantly between groups in the 3-step shot (p ≤ 0.05). Significant correlations were found only for ball velocity and predominantly for the novice players during the 3-step shot (p ≤ 0.05). The results possibly highlight a shortage in the novice ability to effectively reduce their forward momentum so as to provide a stable base of support for the momentum transfer up the kinetic chain, a situation that may predispose athletes to injury.

Profile of young handball players by playing position and determinants of ball throwing velocity

88%

Zapartidis I., Kororos P., Christodoulidis T., Skoufas D., Bayios I.

Journal of Human Kinetics

2011

vol. 27

17-30

This study defined the differences in physical qualities and anthropometric characteristics among playing positions in young male handball players, and investigated the relationship between ball throwing velocity and all measured parameters.182 young male handball players, aged 14.3yrs, with playing experience of 4.5yrs, were classified as: back players, centre backs, pivots, wing players, and goalkeepers. Body height, body mass, BMI, arm span, hand length, standing long jump, 30m sprint, flexibility, VO2max and throwing velocity were measured.Significant differences were detected among individual positions for all measured variables, except for flexibility. Backs were tallest, while pivots showed the largest arm span and hand length. Wings were shortest, with the lowest weight and BMI. Backs and wings performed best in the standing long jump, 30m sprint, flexibility and VO2max. Goalkeepers underperformed in all motor abilities. Ball velocity significantly correlated to all variables except for BMI and flexibility. Anthropometric and physical differences exist among different positions in young male handball players. These parameters influence ball velocity.The findings suggest that a high performance level requires advanced physical qualities as well as anthropometric features for these ages, and coaches should apply specific training programs for each playing position.

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2 Journal of Human Kinetics

1 2014

1 2011

2 Bayios I.

1 Boudolos K.

1 Christodoulidis T.

1 Kororos P.

1 Noutsos K.

1 Rousanoglou E.

1 Skoufas D.

1 Zapartidis I.

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Ground Reaction Forces and Throwing Performance in Elite and Novice Players in Two Types of Handball Shot

Profile of young handball players by playing position and determinants of ball throwing velocity