HealthyNCT07705087
Weighted-Vest Versus Bodyweight Plyometric Training in Youth Female Soccer Players
A study testing Body-Weight Plyometrics, Additional Loaded Plyometric and Routine Football Training in people with Healthy and Athletic Performance, run by Pamukkale University at 1 site in Turkey (Türkiye).
Trial summary
Lower extremity strength, explosive power, dynamic balance and functional movement quality are important determinants of performance and injury prevention in soccer. This study compares the effects of bodyweight plyometric training and weighted-vest plyometric training on athletic performance in young female soccer… Read more about this study
- Who is it for?
- Ages 13 to 18 years, women onlyHealthy volunteers can take part
- Conditions the study is for
- Healthy, Athletic Performance
- What is being tested?
- Body-Weight Plyometrics, Additional Loaded Plyometric and Routine Football Training
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 36 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 3 Aug 2026to 16 Oct 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
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 13 to 18 years
- Women only
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- No history of surgery due to musculoskeletal injuries within the past 6 months.
- No use of ergogenic supplements within the past 3 months.
- Regular participation in routine team training sessions for at least 2 months prior to the study.
Who cannot join
- History of any recent injury requiring a recovery period of more than one week.
- Use of ergogenic aids or nutritional supplements during the intervention period.
- Missing two consecutive or four non-consecutive training sessions during the study period.
- Participation in additional structured physical training or exercises outside of the routine team practices and the study protocol.
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Pamukkale University, Faculty of Sport Sciences
Denizli, Denizli, 20160
About this study
Official title: Effects of Weighted-Vest Versus Bodyweight Plyometric Training on Jumping Performance and Isokinetic Knee Strength in Youth Female Soccer Players: A Randomized Controlled Trial
Lower extremity strength, explosive power, dynamic balance and functional movement quality are important determinants of performance and injury prevention in soccer. This study compares the effects of bodyweight plyometric training and weighted-vest plyometric training on athletic performance in young female soccer players. Participants are randomly assigned to three groups: Bodyweight Plyometric Training (BW-PT), Weighted-Vest Plyometric Training (EL-PT; vest equal to 10% of body weight) and Control (CG; routine soccer training only). The interventions are performed twice a week for 6 weeks. Isokinetic knee extensor and flexor strength (60°/s and 120°/s), jumping performance (standing long jump, countermovement jump height and 15-second repeated jump test), functional movement (Functional Movement Screen) and dynamic balance (Y-Balance Test) are assessed before and immediately after the training period. The originally planned 4-week detraining follow-up was cancelled before data analysis because it could not be completed within the funding period of the project.
- Conditions
- Healthy, Athletic Performance
- Being tested
- Body-Weight Plyometrics, Additional Loaded Plyometric, Routine Football Training
- Keywords
- Plyometric training, Female football players, Isokinetic strength, Jump performance, Neuromuscular control, Weighted vest, Functional Movement Screen, Y-Balance Test
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Body-Weight PlyometricsOther
A structured plyometric training program performed twice a week for six weeks. Exercises include various jumps and bounds using only the participant's body weight. Each session lasts approximately 30 minutes.
Additional Loaded PlyometricOther
A structured plyometric training program performed twice a week for six weeks. Participants will wear a weighted vest equivalent to 10% of their body weight during the exercises. Each session lasts approximately 30 minutes.
Routine Football TrainingOther
Participants in this group will continue to perform their standard, routine football training sessions. They will not receive any additional or structured plyometric training program during the intervention period.
| Study group | Role | What they receive |
|---|---|---|
| Body-Weight Plyometric Training Group | Experimental | Participants in this group will perform plyometric training using only their own body weight. Receives: Other: Body-Weight Plyometrics |
| Plyometric Training Group With Additional Load | Experimental | Participants in this group will perform plyometric training while wearing a weighted vest equal to 10% of their body weight. Receives: Other: Additional Loaded Plyometric |
| Control Group | Active comparator | Participants in this group will continue their routine football training without any additional plyometric exercises. Receives: Other: Routine Football Training |
What is being measured
The primary outcome is the main question the study is designed to answer.
Absolute Peak Torque (APT) of Knee Extensors and Flexors
Concentric isokinetic absolute peak torque (APT) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: Nm)
Measured: Baseline (Week 0) and immediately post-training (Week 6)
Relative Peak Torque (RPT) of Knee Extensors and Flexors
Concentric isokinetic relative peak torque (RPT) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: Nm/kg)
Measured: Baseline (Week 0) and immediately post-training (Week 6)
Time to Peak Torque (TPT) of Knee Extensors and Flexors
Concentric isokinetic time to peak torque (TPT) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: milliseconds)
Measured: Baseline (Week 0) and immediately post-training (Week 6)
Average Peak Torque (AvPT) of Knee Extensors and Flexors
Concentric isokinetic average peak torque (AvPT) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: Nm)
Measured: Baseline (Week 0) and immediately post-training (Week 6)
Average Rate of Force Development (AvRFD) of Knee Extensors and Flexors
Concentric isokinetic average rate of force development (AvRFD) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: Nm/s)
Measured: Baseline (Week 0) and immediately post-training (Week 6)
Vertical Jump Height (VJH)
Vertical jump height calculated from flight time will be evaluated using an electronic contact mat system (Fusion SmartJump, Fusion Sport, Australia). Participants will perform a countermovement jump without arm swing. The best value from 3 repetitions, separated by 1-minute rest intervals, will be recorded. (Unit of measure: cm)
Measured: Baseline (Week 0) and immediately post-training (Week 6)
Standing Long Jump (SLJ) Distance
Horizontal jump distance will be assessed. Participants will perform a maximum distance jump with two feet from behind a starting line. The best value from 3 repetitions will be recorded. (Unit of measure: cm)
Measured: Baseline (Week 0) and immediately post-training (Week 6)
15-Second Repeated Jump Test: Average Power (RJ15s-AP)
Average power (RJ15s-AP) will be evaluated during 15 seconds of continuous maximal vertical jumps using an electronic contact mat system (Fusion SmartJump, Fusion Sport, Australia). Participants will jump with hands on hips and an upright trunk. The value is calculated using the Bosco equation. (Unit of Measure: W)
Measured: Baseline (Week 0) and immediately post-training (Week 6)
15-Second Repeated Jump Test: Flight Time (RJ15s-FT)
Flight time (RJ15s-FT) will be evaluated during 15 seconds of continuous maximal vertical jumps using an electronic contact mat system (Fusion SmartJump, Fusion Sport, Australia). Participants will jump with hands on hips and an upright trunk. The value is calculated using the Bosco equation. (Unit of Measure: ms)
Measured: Baseline (Week 0) and immediately post-training (Week 6)
15-Second Repeated Jump Test: Number of Jumps (N-RJ15s)
The number of jumps (N-RJ15s) will be evaluated during 15 seconds of continuous maximal vertical jumps using an electronic contact mat system (Fusion SmartJump, Fusion Sport, Australia). Participants will jump with hands on hips and an upright trunk. (Unit of Measure: Count)
Measured: Baseline (Week 0) and immediately post-training (Week 6)
Secondary outcomes (2)
Functional Movement Capacity
Functional movement capacity and potential asymmetries will be evaluated using the Functional Movement Screen (FMS) kit, which consists of 7 movement patterns scored from 0 to 3 (max total score: 21). (Unit of measure: Score on a scale from 0 to 21)
Measured: Baseline (Week 0) and immediately post-training (Week 6)
Dynamic Balance and Neuromuscular Control
Dynamic balance will be measured using the Y-Balance Test kit. Reach distances in three directions will be normalized to the participant's leg length to assess lower extremity neuromuscular control and asymmetry. (Unit of measure: Percentage)
Measured: Baseline (Week 0) and immediately post-training (Week 6)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 Jul 2026
- Study start3 Aug 2026
- Primary completion16 Oct 2026 (estimated)
- Study completion16 Oct 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for HealthyStudies of the same condition, open and under way.
- More trials run by Pamukkale UniversityThe sponsor's other registered studies.
- 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
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 36 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Pamukkale University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Fatih GUR, Pamukkale University
- Investigators
- GUR, Principal investigator, Pamukkale University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07705087
- Sponsor's protocol ID
- E-60116787-020-811428
- Other IDs
- 2026TAP009
- Status last verified
- Oct 2026
- First submitted
- 2 Jul 2026
- Last updated
- 7 Oct 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: Individual participant data (IPD) will not be shared. The informed consent obtained from the participants does not include provisions for public data sharing. Furthermore, preserving the privacy and complete anonymization of the participants in this small, cohort-specific sports science study is a priority, which restricts the feasibility of sharing individual-level data.
Study at a glance
From the registry record, last updated by the sponsor on 7 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Weighted-Vest Versus Bodyweight Plyometric Training on Jumping Performance and Isokinetic Knee Strength in Youth Female Soccer Players: A Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT07705087
- Acronym / sponsor ID
- E-60116787-020-811428
- Conditions
- Healthy, Athletic Performance
- Keywords
- Plyometric training, Female football players, Isokinetic strength, Jump performance, Neuromuscular control, Weighted vest, Functional Movement Screen, Y-Balance Test
- Study type
- Interventional
- Recruitment status
- Active, not recruiting
- Enrolment
- 36 participants (estimated)
- Lead sponsor
- Pamukkale UniversityUniversity, hospital or other
- Study start
- 3 Aug 2026 (actual)
- Primary completion
- 16 Oct 2026 (estimated)
- Study completion
- 16 Oct 2026 (estimated)
- First posted
- 15 Jul 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.
Lower extremity strength, explosive power, dynamic balance and functional movement quality are important determinants of performance and injury prevention in soccer. This study compares the effects of bodyweight plyometric training and weighted-vest plyometric training on athletic performance in young female soccer players. Participants are randomly assigned to three groups: Bodyweight Plyometric Training (BW-PT), Weighted-Vest Plyometric Training (EL-PT; vest equal to 10% of body weight) and Control (CG; routine soccer training only). The interventions are performed twice a week for 6 weeks. Isokinetic knee extensor and flexor strength (60°/s and 120°/s), jumping performance (standing long jump, countermovement jump height and 15-second repeated jump test), functional movement (Functional Movement Screen) and dynamic balance (Y-Balance Test) are assessed before and immediately after the training period. The originally planned 4-week detraining follow-up was cancelled before data analysis because it could not be completed within the funding period of the project.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Body-Weight Plyometric Training Group | Experimental | Other: Body-Weight PlyometricsParticipants in this group will perform plyometric training using only their own body weight. |
| Plyometric Training Group With Additional Load | Experimental | Other: Additional Loaded PlyometricParticipants in this group will perform plyometric training while wearing a weighted vest equal to 10% of their body weight. |
| Control Group | Active comparator | Other: Routine Football TrainingParticipants in this group will continue their routine football training without any additional plyometric exercises. |
Who may qualify
- Ages
- 13 to 18 years
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (3 listed)
- No history of surgery due to musculoskeletal injuries within the past 6 months.
- No use of ergogenic supplements within the past 3 months.
- Regular participation in routine team training sessions for at least 2 months prior to the study.
Key exclusion criteria (4 listed)
- History of any recent injury requiring a recovery period of more than one week.
- Use of ergogenic aids or nutritional supplements during the intervention period.
- Missing two consecutive or four non-consecutive training sessions during the study period.
- Participation in additional structured physical training or exercises outside of the routine team practices and the study protocol.
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 |
|---|---|---|
| Body-Weight PlyometricsA structured plyometric training program performed twice a week for six weeks. Exercises include various jumps and bounds using only the participant's body weight. Each session lasts approximately 30 minutes. | Other | Body-Weight Plyometric Training Group |
| Additional Loaded PlyometricA structured plyometric training program performed twice a week for six weeks. Participants will wear a weighted vest equivalent to 10% of their body weight during the exercises. Each session lasts approximately 30 minutes. | Other | Plyometric Training Group With Additional Load |
| Routine Football TrainingParticipants in this group will continue to perform their standard, routine football training sessions. They will not receive any additional or structured plyometric training program during the intervention period. | Other | Control Group |
Primary outcome
Absolute Peak Torque (APT) of Knee Extensors and Flexors
Time frame: Baseline (Week 0) and immediately post-training (Week 6)
Concentric isokinetic absolute peak torque (APT) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: Nm)
Relative Peak Torque (RPT) of Knee Extensors and Flexors
Time frame: Baseline (Week 0) and immediately post-training (Week 6)
Concentric isokinetic relative peak torque (RPT) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: Nm/kg)
Time to Peak Torque (TPT) of Knee Extensors and Flexors
Time frame: Baseline (Week 0) and immediately post-training (Week 6)
Concentric isokinetic time to peak torque (TPT) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: milliseconds)
Average Peak Torque (AvPT) of Knee Extensors and Flexors
Time frame: Baseline (Week 0) and immediately post-training (Week 6)
Concentric isokinetic average peak torque (AvPT) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: Nm)
Average Rate of Force Development (AvRFD) of Knee Extensors and Flexors
Time frame: Baseline (Week 0) and immediately post-training (Week 6)
Concentric isokinetic average rate of force development (AvRFD) of the knee extensors and flexors (dominant leg) will be evaluated at 60°/s and 120°/s angular velocities using a Cybex Humac Norm dynamometer during 5 maximal repetitions. (Unit of measure: Nm/s)
Vertical Jump Height (VJH)
Time frame: Baseline (Week 0) and immediately post-training (Week 6)
Vertical jump height calculated from flight time will be evaluated using an electronic contact mat system (Fusion SmartJump, Fusion Sport, Australia). Participants will perform a countermovement jump without arm swing. The best value from 3 repetitions, separated by 1-minute rest intervals, will be recorded. (Unit of measure: cm)
Standing Long Jump (SLJ) Distance
Time frame: Baseline (Week 0) and immediately post-training (Week 6)
Horizontal jump distance will be assessed. Participants will perform a maximum distance jump with two feet from behind a starting line. The best value from 3 repetitions will be recorded. (Unit of measure: cm)
15-Second Repeated Jump Test: Average Power (RJ15s-AP)
Time frame: Baseline (Week 0) and immediately post-training (Week 6)
Average power (RJ15s-AP) will be evaluated during 15 seconds of continuous maximal vertical jumps using an electronic contact mat system (Fusion SmartJump, Fusion Sport, Australia). Participants will jump with hands on hips and an upright trunk. The value is calculated using the Bosco equation. (Unit of Measure: W)
15-Second Repeated Jump Test: Flight Time (RJ15s-FT)
Time frame: Baseline (Week 0) and immediately post-training (Week 6)
Flight time (RJ15s-FT) will be evaluated during 15 seconds of continuous maximal vertical jumps using an electronic contact mat system (Fusion SmartJump, Fusion Sport, Australia). Participants will jump with hands on hips and an upright trunk. The value is calculated using the Bosco equation. (Unit of Measure: ms)
15-Second Repeated Jump Test: Number of Jumps (N-RJ15s)
Time frame: Baseline (Week 0) and immediately post-training (Week 6)
The number of jumps (N-RJ15s) will be evaluated during 15 seconds of continuous maximal vertical jumps using an electronic contact mat system (Fusion SmartJump, Fusion Sport, Australia). Participants will jump with hands on hips and an upright trunk. (Unit of Measure: Count)
2 secondary outcomes
Functional Movement Capacity
Time frame: Baseline (Week 0) and immediately post-training (Week 6)
Dynamic Balance and Neuromuscular Control
Time frame: Baseline (Week 0) and immediately post-training (Week 6)
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 7 Oct 2026.
- Individual participant dataSharing planned: No. Individual participant data (IPD) will not be shared. The informed consent obtained from the participants does not include provisions for public data sharing. Furthermore, preserving the privacy and complete anonymization of the participants in this small, cohort-specific sports science study is a priority, which restricts the feasibility of sharing individual-level data.
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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.
GUR principal investigator
Pamukkale University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Body-Weight Plyometrics, Additional Loaded Plyometric and Routine Football Training in people with Healthy and Athletic Performance, run by Pamukkale 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 3 inclusion and 4 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: under way, not looking for participants, as of the sponsor's last update on 7 Oct 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?
This study is still under way. Results are not available in the source record yet.
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?
Absolute Peak Torque (APT) of Knee Extensors and Flexors (time frame: Baseline (Week 0) and immediately post-training (Week 6)). The study lists 10 primary outcomes in all. 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 7 Oct 2026.