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Effects of Pre-Activation with Variable Intra-Repetition Resistance on Throwing Velocity in Female Handball Players: A Methodological Proposal

Authors
  • Martínez-García, Darío1, 2
  • Rodríguez-Perea, Ángela1, 2
  • Huerta-Ojeda, Álvaro3
  • Jerez-Mayorga, Daniel4
  • Aguilar-Martínez, Daniel1
  • Chirosa-Rios, Ignacio1
  • Ruiz-Fuentes, Pablo2
  • Chirosa-Rios, Luis Javier1
  • 1 Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Spain , (Spain)
  • 2 Department of Sports Sciences and Physical Conditioning, Universidad Católica de la Santísima Concepción, Chile , (Chile)
  • 3 Facultad de Educación, Universidad de Las Américas, Chile , (Chile)
  • 4 Facultad Ciencias de la Rehabilitación, Universidad Andrés Bello, Chile , (Chile)
Type
Published Article
Journal
Journal of Human Kinetics
Publisher
Sciendo
Publication Date
Jan 30, 2021
Volume
77
Issue
1
Pages
235–244
Identifiers
DOI: 10.2478/hukin-2021-0022
Source
De Gruyter
Keywords
License
Green

Abstract

The purpose of this study was to investigate the acute effect of pre-activation with Variable Intra-Repetition Resistance and isometry on the overhead throwing velocity in handball players. Fourteen female handball players took part in the study (age: 21.2 ± 2.7 years, experience: 10.9 ± 3.5 years). For Post-Activation Potentiation, two pre-activation methods were used: (I) Variable Intra-Repetition Resistance: 1 x 5 maximum repetitions at an initial velocity of 0.6 m·s-1 and a final velocity of 0.9 m·s-1; (II) Isometry: 1 x 5 s of maximum voluntary isometric contraction. Both methods were "standing unilateral bench presses" with the dominant arm, using a functional electromechanical dynamometer. The variable analysed was the mean of the three overhead throws. Ball velocity was measured with a radar (Stalker ATS). The statistical analysis was performed using ANOVA with repeated measures. No significant differences were found for either method (variable resistance intra-repetition: p = 0.194, isometry: p = 0.596). Regarding the individual responses, the analysis showed that 86% of the sample increased throwing velocity with the variable resistance intra-repetition method, while 93% of the sample increased throwing velocity with the isometric method. Both the variable intra-repetition resistance and isometric methods show improvements in ball velocity in female handball players. However, the authors recommend checking individual responses, since the results obtained were influenced by the short rest interval between the pre-activation and the experimental sets.

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