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document
In-season effect of short-term sprint and power training programs on elite junior soccer players . The aim of this study was to examine the effects of 2 in-season short-term sprint and power training protocols on vertical countermovement jump height ( with or without arms ) , sprint ( Sprint-15m ) speed , and agility ( Agility-15m ) speed in male elite junior soccer players . Twenty highly trained soccer players ( age 18.3 +/- 0.6 years , height 177 +/- 4 cm , body mass 71.4 +/- 6.9 kg , sum skinfolds 48.1 +/- 11.4 mm ) , members of a professional soccer academy , were randomly allocated to either a CONTRAST ( n = 10 ) or SPRINT ( n = 10 ) group . The training intervention consisted of 6 supervised training sessions over 7 weeks , targeting the improvement of the players ' speed and power . CONTRAST protocol consisted of alternating heavy-light resistance ( 15-50 % body mass ) with soccer-specific drills ( small-sided games or technical skills ) . SPRINT training protocol used line 30-m sprints ( 2-4 sets of 4 x 30 m with 180 and 90 seconds of recovery , respectively ) . At baseline no difference between physical test performance was evident between the 2 groups ( p > 0.05 ) . No time x training group effect was found for any of the vertical jump and Agility-15m variables ( p > 0.05 ) . A time x training group effect was found for Sprint-15m performance with the CONTRAST group showing significantly better scores than the SPRINT group ( 7.23 +/- 0.18 vs. 7.09 +/- 0.20 m.s , p < 0.01 ) . In light of these findings CONTRAST training should be preferred to line sprint training in the short term in young elite soccer players when the aim is to improve soccer-specific sprint performance ( 15 m ) during the competitive season .
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Intervention_Other
short-term sprint
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Intervention_Educational
and
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Intervention_Other
power training programs
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Intervention_Other
short-term sprint
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Intervention_Educational
and
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Intervention_Other
power training protocols
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Intervention_Educational
The training intervention
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Intervention_Educational
6 supervised training sessions
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Intervention_Other
SPRINT training protocol
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Intervention_Educational
CONTRAST training
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Outcome_Mental
speed and power
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Outcome_Physical
.
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Outcome_Physical
physical test performance
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Outcome_Other
vertical jump and Agility-15m variables
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Outcome_Physical
( p
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Outcome_Mental
soccer-specific sprint performance
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Outcome_Physical
( 15 m )
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Participant_Condition
elite junior soccer players .
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Participant_Sex
male
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Participant_Age
18.3 +/- 0.6 years