A sled push stimulus potentiates subsequent 20-m sprint performance.
J Sci Med Sport
; 20(8): 781-785, 2017 Aug.
Article
em En
| MEDLINE
| ID: mdl-28185808
ABSTRACT
OBJECTIVES:
The objective of this study was to examine the potentiating effects of performing a single sprint-style sled push on subsequent unresisted 20m sprint performance.DESIGN:
Randomized crossover design.METHODS:
Following a familiarization session, twenty rugby league players performed maximal unresisted 20m sprints before and 15s, 4, 8 and 12min after a single sled push stimulus loaded with either 75 or 125% body mass. The two sled push conditions were performed in a randomized order over a one-week period. The fastest sprint time recorded before each sled push was compared to that recorded at each time point after to determine the post-activation potentiation (PAP) effect.RESULTS:
After the 75% body mass sled push, sprint time was 0.26±1.03% slower at the 15s time point (effect size [ES]=0.07) but faster at the 4 (-0.95±2.00%; ES=-0.22), 8 (-1.80±1.43%; ES=-0.42) and 12 (-1.54±1.54%; ES=-0.36)min time points. Sprint time was slower at all the time points after the 125% body mass sled (1.36±2.36%-2.59±2.90%; ESs=0.34-0.64).CONCLUSIONS:
Twenty-meter sprint performance is potentiated 4-12min following a sled push loaded with 75% body mass while it is impaired after a 125% body mass sled. These results are of great importance for coaches seeking to potentiate sprint performance with the sled push exercise.Palavras-chave
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MEDLINE
Assunto principal:
Corrida
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Suporte de Carga
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Desempenho Atlético
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Treinamento Resistido
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article