Effects of Pre-Activation with Variable Intra-Repetition Resistance on Throwing Velocity in Female Handball Players: a Methodological Proposal
| Autor: | Ángela Rodríguez-Perea, Álvaro Huerta-Ojeda, Ignacio Chirosa-Rios, Dario Martínez-García, Luis Javier Chirosa-Ríos, Daniel Aguilar-Martínez, Pablo Ruiz-Fuentes, Daniel Jerez-Mayorga |
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| Rok vydání: | 2021 |
| Předmět: |
Dynamometer
post activation potentiation Repeated measures design female athletes Physical Therapy Sports Therapy and Rehabilitation 030229 sport sciences Isometric exercise 030204 cardiovascular system & hematology isometric contraction 03 medical and health sciences Variable (computer science) 0302 clinical medicine Physiology (medical) Sports medicine Statistics Statistical analysis Analysis of variance Section III - Sports Training warm up resistance training Pre activation RC1200-1245 human activities Throwing |
| Zdroj: | Journal of Human Kinetics Journal of Human Kinetics, Vol 77, Iss 1, Pp 235-244 (2021) |
| ISSN: | 1640-5544 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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