Post-Activation Performance Enhancement (PAPE)PAPE-JUMPNCT07755345
Weighted vs Unweighted Plyometric Conditioning on Vertical Jump Performance in Young Male Soccer Players
A study testing Weighted Plyometric Conditioning and Unweighted Plyometric Conditioning in people with Post-Activation Performance Enhancement (PAPE) and Plyometric Exercise, run by Istanbul Gelisim University at 1 site in Turkey (Türkiye).
Trial summary
Explosive lower-limb power is essential for soccer performance and contributes to jumping, sprinting, and rapid changes of direction. Plyometric exercises are commonly used during warm-up to improve neuromuscular readiness and may enhance subsequent athletic performance through post-activation performance enhancement… Read more about this study
- Who is it for?
- Ages 18 to 30 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Post-Activation Performance Enhancement (PAPE), Plyometric Exercise, Vertical Jump Performance
- What is being tested?
- Weighted Plyometric Conditioning and Unweighted Plyometric Conditioning
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 24 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 15 Mar 2025to 30 Apr 2025
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 30 years
- Men only
- Healthy volunteers accepted
- Adult
Who may be able to join
- Healthy male soccer players aged 18 to 30 years.
- Actively participating in organized soccer training.
- Minimum of 2 years of structured plyometric training experience.
- Competing at the regional development league level.
- Free from lower-limb musculoskeletal injury during the previous 4 months.
- Able to perform maximal jumping tasks.
- Provided written informed consent prior to participation.
Who cannot join
- History of lower-extremity surgery within the previous year.
- Current lower-limb pain or discomfort during jumping activities.
- Neurological, cardiovascular, or orthopedic disorders affecting neuromuscular performance.
- Use of performance-enhancing substances.
- Failure to comply with study procedures or testing instructions.
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Istanbul Gelisim University
Istanbul, Istanbul, 34290
About this study
Official title: Differential Time-Course Effects of Weighted and Unweighted Plyometric Conditioning on Vertical Jump Performance in Young Male Soccer Players
Explosive lower-limb power is essential for soccer performance and contributes to jumping, sprinting, and rapid changes of direction. Plyometric exercises are commonly used during warm-up to improve neuromuscular readiness and may enhance subsequent athletic performance through post-activation performance enhancement (PAPE). However, it remains unclear whether adding external load during plyometric conditioning provides greater benefits than performing the same exercises without additional load.
The purpose of this study is to compare the acute effects of weighted and unweighted plyometric conditioning on vertical jump performance in young male soccer players. Participants complete two experimental sessions separated by 48 hours. In one session, they perform a standardized single-leg plyometric protocol without external load, and in the other session they perform the same protocol while wearing a weighted vest equivalent to 10% of their body mass. Vertical jump height is assessed before exercise and at several time points after the conditioning activity to examine the time course of performance changes.
The findings of this study are expected to improve understanding of the optimal use of weighted plyometric conditioning during warm-up and provide practical guidance for coaches and sports practitioners seeking to maximize explosive performance before training and competition.
- Conditions
- Post-Activation Performance Enhancement (PAPE), Plyometric Exercise, Vertical Jump Performance, Soccer Players
- Being tested
- Weighted Plyometric Conditioning, Unweighted Plyometric Conditioning
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Weighted Plyometric ConditioningBehavioural
Participants completed three sets of ten single-leg plyometric repetitions while wearing a weighted vest corresponding to 10% of their body mass. Sessions were separated by 48 hours, and jump performance was measured before and after the conditioning protocol.
Unweighted Plyometric ConditioningBehavioural
Participants completed the identical single-leg plyometric conditioning protocol without external load. Vertical jump performance was measured before and after the conditioning protocol using the same assessment schedule.
| Study group | Role | What they receive |
|---|---|---|
| Weighted Plyometric Conditioning | Experimental | Participants performed a standardized single-leg plyometric conditioning protocol while wearing a weighted vest equivalent to 10% of their body mass. Vertical jump performance was assessed at baseline and at 15 seconds, 2 minutes, 4 minutes, and 8 minutes after the conditioning activity. Receives: Behavioral: Weighted Plyometric Conditioning |
| Unweighted Plyometric Conditioning | Active comparator | Participants performed the same standardized single-leg plyometric conditioning protocol without external load. Vertical jump performance was assessed at baseline and at 15 seconds, 2 minutes, 4 minutes, and 8 minutes after the conditioning activity. Receives: Behavioral: Unweighted Plyometric Conditioning |
What is being measured
The primary outcome is the main question the study is designed to answer.
Vertical Jump Height
Vertical jump height (cm) measured before the plyometric conditioning protocol (baseline) and at 15 seconds, 2 minutes, 4 minutes, and 8 minutes after weighted and unweighted plyometric conditioning.
Measured: Baseline, 15 seconds, 2 minutes, 4 minutes, and 8 minutes after each intervention session
Secondary outcomes (4)
Area Under the Curve (AUC) of Vertical Jump Performance
Cumulative vertical jump performance across the post-activation period.
Measured: Immediately after completion of each intervention session
Performance Slope
Rate of change in vertical jump height across the post-activation period.
Measured: Immediately after completion of each intervention session
Peak Vertical Jump Height
Highest vertical jump height achieved during the post-activation assessment period.
Measured: 15 seconds to 8 minutes after each intervention session
Time to Peak Performance
Time required to reach the highest vertical jump performance following each conditioning protocol.
Measured: 15 seconds to 8 minutes after each intervention session
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Aug 2026
- Study start15 Mar 2025
- Primary completion30 Apr 2025
- Study completion30 Apr 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Post-Activation Performance Enhancement (PAPE)Studies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Non-randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Enrolment
- 24 participants (actual)
Sponsor and investigators
- Lead sponsor
- Istanbul Gelisim University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Görkem Açar, Istanbul Gelisim University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07755345
- Sponsor's protocol ID
- PAPE-PLYO-2025-01
- Acronym
- PAPE-JUMP
- Status last verified
- Aug 2026
- First submitted
- 5 Aug 2026
- Last updated
- 13 Aug 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 13 Aug 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Differential Time-Course Effects of Weighted and Unweighted Plyometric Conditioning on Vertical Jump Performance in Young Male Soccer Players
- ClinicalTrials.gov ID
- NCT07755345
- Acronym / sponsor ID
- PAPE-JUMP / PAPE-PLYO-2025-01
- Conditions
- Post-Activation Performance Enhancement (PAPE), Plyometric Exercise, Vertical Jump Performance, Soccer Players
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 24 participants (actual)
- Lead sponsor
- Istanbul Gelisim UniversityUniversity, hospital or other
- Study start
- 15 Mar 2025 (actual)
- Primary completion
- 30 Apr 2025 (actual)
- Study completion
- 30 Apr 2025 (actual)
- First posted
- 10 Aug 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Explosive lower-limb power is essential for soccer performance and contributes to jumping, sprinting, and rapid changes of direction. Plyometric exercises are commonly used during warm-up to improve neuromuscular readiness and may enhance subsequent athletic performance through post-activation performance enhancement (PAPE). However, it remains unclear whether adding external load during plyometric conditioning provides greater benefits than performing the same exercises without additional load.
The purpose of this study is to compare the acute effects of weighted and unweighted plyometric conditioning on vertical jump performance in young male soccer players. Participants complete two experimental sessions separated by 48 hours. In one session, they perform a standardized single-leg plyometric protocol without external load, and in the other session they perform the same protocol while wearing a weighted vest equivalent to 10% of their body mass. Vertical jump height is assessed before exercise and at several time points after the conditioning activity to examine the time course of performance changes.
The findings of this study are expected to improve understanding of the optimal use of weighted plyometric conditioning during warm-up and provide practical guidance for coaches and sports practitioners seeking to maximize explosive performance before training and competition.
Study design
- Primary purpose
- Basic science
- Allocation
- Non-randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Weighted Plyometric Conditioning | Experimental | Behavioral: Weighted Plyometric ConditioningParticipants performed a standardized single-leg plyometric conditioning protocol while wearing a weighted vest equivalent to 10% of their body mass. Vertical jump performance was assessed at baseline and at 15 seconds, 2 minutes, 4 minutes, and 8 minutes after the conditioning activity. |
| Unweighted Plyometric Conditioning | Active comparator | Behavioral: Unweighted Plyometric ConditioningParticipants performed the same standardized single-leg plyometric conditioning protocol without external load. Vertical jump performance was assessed at baseline and at 15 seconds, 2 minutes, 4 minutes, and 8 minutes after the conditioning activity. |
Who may qualify
- Ages
- 18 to 30 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (7 listed)
- Healthy male soccer players aged 18 to 30 years.
- Actively participating in organized soccer training.
- Minimum of 2 years of structured plyometric training experience.
- Competing at the regional development league level.
- Free from lower-limb musculoskeletal injury during the previous 4 months.
Key exclusion criteria (5 listed)
- History of lower-extremity surgery within the previous year.
- Current lower-limb pain or discomfort during jumping activities.
- Neurological, cardiovascular, or orthopedic disorders affecting neuromuscular performance.
- Use of performance-enhancing substances.
- Failure to comply with study procedures or testing instructions.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Weighted Plyometric ConditioningParticipants completed three sets of ten single-leg plyometric repetitions while wearing a weighted vest corresponding to 10% of their body mass. Sessions were separated by 48 hours, and jump performance was measured before and after the conditioning protocol. | Behavioural | Weighted Plyometric Conditioning |
| Unweighted Plyometric ConditioningParticipants completed the identical single-leg plyometric conditioning protocol without external load. Vertical jump performance was measured before and after the conditioning protocol using the same assessment schedule. | Behavioural | Unweighted Plyometric Conditioning |
Primary outcome
Vertical Jump Height
Time frame: Baseline, 15 seconds, 2 minutes, 4 minutes, and 8 minutes after each intervention session
Vertical jump height (cm) measured before the plyometric conditioning protocol (baseline) and at 15 seconds, 2 minutes, 4 minutes, and 8 minutes after weighted and unweighted plyometric conditioning.
4 secondary outcomes
Area Under the Curve (AUC) of Vertical Jump Performance
Time frame: Immediately after completion of each intervention session
Performance Slope
Time frame: Immediately after completion of each intervention session
Peak Vertical Jump Height
Time frame: 15 seconds to 8 minutes after each intervention session
Time to Peak Performance
Time frame: 15 seconds to 8 minutes after each intervention session
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 13 Aug 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Weighted Plyometric Conditioning and Unweighted Plyometric Conditioning in people with Post-Activation Performance Enhancement (PAPE) and Plyometric Exercise, run by Istanbul Gelisim University at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 7 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 13 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Vertical Jump Height (time frame: Baseline, 15 seconds, 2 minutes, 4 minutes, and 8 minutes after each intervention session). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Aug 2026.