Effects of Heavy Back-Squat PAPE on Jump and Repeated Sprint Performance in Trained Soccer Players (NCT07736209) | Clinical Trial Compass
CompletedNot Applicable
Effects of Heavy Back-Squat PAPE on Jump and Repeated Sprint Performance in Trained Soccer Players
Turkey (Türkiye)20 participantsStarted 2025-12-20
Plain-language summary
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.
Who can participate
Age range
20 Years – 23 Years
Sex
MALE
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
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.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Repeated Sprint Performance Decrement
Timeframe: 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.
2
Countermovement Jump Height
Timeframe: 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.