Effects of Heavy Back-Squat PAPE on Jump and Repeated Sprint Performance in Trained Soccer Players
29. juli 2026 opdateret af: Abdullah Demirli, Istanbul University - Cerrahpasa
The PAPE Paradox During Prolonged Repeated Sprint Performance: Acute Heavy Back-Squat Potentiates Vertical Jump and Early Sprint Performance But Impairs Overall Output-A Randomized Crossover Trial in Trained Soccer Players
This study examined whether performing heavy back squats before exercise affects jumping ability and repeated sprint performance in trained soccer players.
Twenty male university soccer players completed two testing sessions in a randomized crossover design.
In one session, participants performed a standardized warm-up only.
In the other session, they performed the same warm-up followed by three sets of three back-squat repetitions at 90% of their one-repetition maximum.
The two sessions were separated by one week.
After each condition, participants completed a countermovement jump test and an 18 × 40-meter repeated sprint test.
The study aimed to determine whether the heavy back-squat activity improves early explosive performance and whether it increases fatigue during prolonged repeated sprint exercise.
Studieoversigt
Status
Afsluttet
Betingelser
Intervention / Behandling
Undersøgelsestype
Interventionel
Tilmelding (Faktiske)
20
Fase
- Ikke anvendelig
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
-
-
Istanbul
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Istanbul, Istanbul, Tyrkiet (Türkiye), 34320
- İstanbul University Cerrahpaşa
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Deltagelseskriterier
Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
Tager imod sunde frivillige
Ja
Beskrivelse
Inclusion Criteria:
- Male soccer players aged 20-23 years.
- Currently competing in the top division of a university soccer league.
- A minimum of three years of regular soccer training experience.
- Free from long-term musculoskeletal injury during the previous six months.
- Willing and able to complete all familiarization, strength-testing, and experimental sessions.
- Provision of written informed consent.
Exclusion Criteria:
- A musculoskeletal injury resulting in an absence from training or competition for 21 days or longer during the previous six months.
- Use of medications or nutritional or ergogenic supplements that could affect exercise performance.
- Any health or physical condition preventing safe participation in heavy back-squat, countermovement jump, or repeated sprint testing.
- Failure to complete both experimental conditions.
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Grundvidenskab
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Enkelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
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Eksperimentel: Control-PAPE Sequence
Participants first completed the Control condition, consisting of a standardized warm-up without an additional conditioning activity.
After a one-week washout period, participants completed the PAPE condition, consisting of the same standardized warm-up followed by three sets of three back-squat repetitions at 90% of one-repetition maximum, with 3 minutes of passive recovery between sets.
Countermovement jump and repeated sprint performance were assessed after each condition.
|
Participants completed a standardized warm-up followed by a heavy back-squat conditioning activity consisting of three sets of three repetitions at 90% of one-repetition maximum.
Three minutes of passive recovery were provided between sets.
Countermovement jump performance was assessed approximately 4.5-5 minutes after the final squat set, immediately before the repeated sprint test.
Participants completed a standardized warm-up consisting of 5 minutes of jogging, followed by 10 bodyweight squats, 10 lunges, and 10 lateral shuffles.
No additional conditioning activity was performed.
After approximately 5 minutes of passive recovery, countermovement jump performance was assessed immediately before the repeated sprint test.
|
|
Eksperimentel: PAPE-Control Sequence
Participants first completed the PAPE condition, consisting of a standardized warm-up followed by three sets of three back-squat repetitions at 90% of one-repetition maximum, with 3 minutes of passive recovery between sets.
After a one-week washout period, participants completed the Control condition, consisting of the same standardized warm-up without an additional conditioning activity.
Countermovement jump and repeated sprint performance were assessed after each condition.
|
Participants completed a standardized warm-up followed by a heavy back-squat conditioning activity consisting of three sets of three repetitions at 90% of one-repetition maximum.
Three minutes of passive recovery were provided between sets.
Countermovement jump performance was assessed approximately 4.5-5 minutes after the final squat set, immediately before the repeated sprint test.
Participants completed a standardized warm-up consisting of 5 minutes of jogging, followed by 10 bodyweight squats, 10 lunges, and 10 lateral shuffles.
No additional conditioning activity was performed.
After approximately 5 minutes of passive recovery, countermovement jump performance was assessed immediately before the repeated sprint test.
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Repeated Sprint Performance Decrement
Tidsramme: During the 18 × 40-meter repeated sprint test, which lasted approximately 15 minutes and was completed within each of two experimental sessions lasting approximately 25-35 minutes; the sessions were separated by a 1-week washout period.
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Percentage decline in repeated sprint performance calculated from sprint times recorded during an 18 × 40-meter shuttle sprint test.
The protocol consisted of three sets of six 40-meter shuttle sprints, with 20 seconds of passive recovery between sprints and 4 minutes of passive recovery between sets.
Lower percentage values indicate better maintenance of sprint performance and less fatigue.
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During the 18 × 40-meter repeated sprint test, which lasted approximately 15 minutes and was completed within each of two experimental sessions lasting approximately 25-35 minutes; the sessions were separated by a 1-week washout period.
|
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Countermovement Jump Height
Tidsramme: At approximately 5 minutes after the assigned condition, within each of two experimental sessions lasting approximately 25-35 minutes; the sessions were separated by a 1-week washout period.
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Maximum countermovement jump height measured in centimeters using the Optojump Next optical measurement system.
Participants performed three maximal countermovement jump trials with their hands positioned on their hips and 60 seconds of passive recovery between trials.
The highest jump height was used for analysis.
Higher values indicate better jump performance.
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At approximately 5 minutes after the assigned condition, within each of two experimental sessions lasting approximately 25-35 minutes; the sessions were separated by a 1-week washout period.
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Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Mean Repeated Sprint Time
Tidsramme: During the 18 × 40-meter repeated sprint test, which lasted approximately 15 minutes and was completed within each of two experimental sessions lasting approximately 25-35 minutes; the sessions were separated by a 1-week washout period.
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Mean sprint time, measured in seconds, calculated across all 18 repetitions of the 40-meter shuttle sprint test.
Sprint times were recorded using a photocell timing system.
Lower values indicate better repeated sprint performance.
|
During the 18 × 40-meter repeated sprint test, which lasted approximately 15 minutes and was completed within each of two experimental sessions lasting approximately 25-35 minutes; the sessions were separated by a 1-week washout period.
|
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Best Sprint Time
Tidsramme: During the 18 × 40-meter repeated sprint test, which lasted approximately 15 minutes and was completed within each of two experimental sessions lasting approximately 25-35 minutes; the sessions were separated by a 1-week washout period.
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The fastest sprint time, measured in seconds, recorded among the 18 repetitions of the 40-meter shuttle sprint test using a photocell timing system.
Lower values indicate better sprint performance.
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During the 18 × 40-meter repeated sprint test, which lasted approximately 15 minutes and was completed within each of two experimental sessions lasting approximately 25-35 minutes; the sessions were separated by a 1-week washout period.
|
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Worst Sprint Time
Tidsramme: During the 18 × 40-meter repeated sprint test, which lasted approximately 15 minutes and was completed within each of two experimental sessions lasting approximately 25-35 minutes; the sessions were separated by a 1-week washout period.
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The slowest sprint time, measured in seconds, recorded among the 18 repetitions of the 40-meter shuttle sprint test using a photocell timing system.
Lower values indicate better sprint performance.
|
During the 18 × 40-meter repeated sprint test, which lasted approximately 15 minutes and was completed within each of two experimental sessions lasting approximately 25-35 minutes; the sessions were separated by a 1-week washout period.
|
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Sprint Time Across Individual Repetitions
Tidsramme: During each repetition of the 18 × 40-meter repeated sprint test, which lasted approximately 15 minutes and was completed within each of two experimental sessions lasting approximately 25-35 minutes; the sessions were separated by a 1-week washout period
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Sprint time, measured in seconds, for each of the 18 individual 40-meter shuttle sprint repetitions.
Sprint-by-sprint values were used to evaluate changes in performance during the early repetitions (sprints 1-3), middle repetitions (sprints 4-8), and later repetitions (sprints 9-18).
Lower values indicate faster sprint performance.
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During each repetition of the 18 × 40-meter repeated sprint test, which lasted approximately 15 minutes and was completed within each of two experimental sessions lasting approximately 25-35 minutes; the sessions were separated by a 1-week washout period
|
Samarbejdspartnere og efterforskere
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Datoer for undersøgelser
Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.
Studer store datoer
Studiestart (Faktiske)
20. december 2025
Primær færdiggørelse (Faktiske)
15. februar 2026
Studieafslutning (Faktiske)
15. februar 2026
Datoer for studieregistrering
Først indsendt
26. juli 2026
Først indsendt, der opfyldte QC-kriterier
29. juli 2026
Først opslået (Faktiske)
30. juli 2026
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
30. juli 2026
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
29. juli 2026
Sidst verificeret
1. juli 2026
Mere information
Begreber relateret til denne undersøgelse
Andre undersøgelses-id-numre
- PAPE-RSA-2025-01
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