چکیده:
Purpose: Acute preparation for agility and power should contain an optimal warm-up which includes stretching movements. Researchers reported that static stretching (SS) deteriorates performance. Therefore, the purpose of this study was to examine and compare the effects of applying static and dynamic stretching in a pre-exercise warm-up on the power and agility of the university soccer players.Material and Methods: Nineteen university soccer players (height: 173.37 ± 7.64 m; mass: 68.12 ± 8.69 kg;age: 25.00 ± 4.56 years) were tested for agility and power using the Illinois agility test and vertical jump test respectively after different warm-up protocols: Static stretching (SS), dynamic stretching on standing position (DS), dynamic exercise combined with galloping motions (DE), and no stretching (NS).Results: There were significant increases in vertical jump records after DS (50.37 ± 5.23 cm) compared to SS (47.31 ± 5.36 cm) and NS (48.02 ± 3.62 cm) (p < 0.002 and p < 0.01, respectively). In addition, there were significant decreases in agility time after DS (16.65 ± 0.54 s) as compared to SS (17.21 ± 0.64 s) and NS(16.97 ± 0.85 s) (p < 0.019 and p < 0.031, respectively).Discussion and Conclusion: It seems that DS improves fitness performance due to it higher post activation potentiation while SS impairs performance because of reducing muscle stiffness. Therefore, we concluded that university soccer players would probably enjoy better agility and power performances after DS. It is also possible that with more DE training they could adapt their bodies to this type of stretching and make use of its advantages.
خلاصه ماشینی:
"Therefore, the purpose of this study was to examine and compare the effects of applying static and dynamic stretching in a pre-exercise warm-up on the power and agility of the university soccer players.
56 years) were tested for agility and power using the Illinois agility test and vertical jump test respectively after different warm-up protocols: Static stretching (SS), dynamic stretching on standing position (DS), dynamic exercise combined with galloping motions (DE), and no stretching (NS).
In soccer players, researchers have investigated the acute effects of stretching on acceleration, maximal speed, agility and vertical jump [1,2,10,11], and reported significantly faster performance after performing dynamic stretching compared to static stretching.
Some of the previous investigators conducted dynamic stretching (in which the player contracts his or her antagonist muscle to stretch the agonist muscle dynamically while keeping their position on the ground) [1,2,10,11] in their studies to study acute effects of different stretching methods on different performance factors, but some other researchers applied dynamic exercise (DE) (in which the player performs active motion combined with galloping over 10 yard distances) [8,12] instead of DS.
Discussion and Conclusion The purpose of the current study was to investigate acute effects of NS, SS, DS, and DE warm-up protocols on power and agility in university soccer players.
To summarize, this research investigated the effects of four different warm-up protocols on power and agility in soccer players.
Acute effect of different stretching methods on Illinois agility test in soccer players."