Plyometric TrainingTENNIS_CLS-TRDNCT07640724
Cluster-Set vs. Traditional-Set Plyometric Loading in Tennis Players
A study testing Cluster Set and Traditional Set in people with Plyometric Training, run by Uludag University at 1 site in Turkey (Türkiye).
Trial summary
The present study aimed to compare the acute effects of cluster-set (CS) and traditional-set (TS) plyometric loading protocols on countermovement jump (CMJ) performance and reactive strength index (RSI-mod) in young tennis players. Read more about this study
- Who is it for?
- Ages 13 to 17 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Plyometric Training
- What is being tested?
- Cluster Set and Traditional Set
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 28 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 15 Mar 2025to 15 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 13 to 17 years
- Men only
- Healthy volunteers accepted
- Child
Who may be able to join
- Engaged in tennis training for ≥2 years, with a frequency of ≥3 sessions/week and participation in ≥4 tournaments annually.
- Had ≥6 months of experience with resistance and plyometric training.
- No history of lower extremity muscle or joint injuries within the last three months.
- No regular use of drugs or stimulants for at least six months prior to the study.
Who cannot join
- -
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Bursa uludag University, Faculty of Sport Sciences
Bursa, 16059
About this study
Official title: Acute Effects of Cluster-Set vs. Traditional-Set Plyometric Loading on Countermovement Jump and Reactive Strength Index in Young Tennis Players
The present study aimed to compare the acute effects of cluster-set (CS) and traditional-set (TS) plyometric loading protocols on countermovement jump (CMJ) performance and reactive strength index (RSI-mod) in young tennis players.
Twenty-eight male tennis players (age: 16.7 ± 1.3 years) were randomly assigned to either a CS or TS group. Following a familiarization session, participants completed an experimental session including pre-tests (CMJ and drop jump), a plyometric loading protocol (CS: 3 × [5 × 2 repetitions, 15 s intra-set rest, 2 min between sets]; TS: 3 × 10 repetitions, 3 min between sets), and post-tests at 15 s, 3 min, and 6 min. CMJ height and RSI-mod were assessed using the My Jump 2 application. Borg Scale, Total Quality Recovery (TQR) were apply after post-tests at 15 s, 3 min, and 6 min.
Read the detailed description
The present study aimed to compare the acute effects of cluster-set (CS) and traditional-set (TS) plyometric loading protocols on countermovement jump (CMJ) performance and reactive strength index (RSI-mod) in young tennis players. It was hypothesized that the CS method would elicit superior acute improvements in jump parameters and recovery due to reduced fatigue compared to the TS method. A total of 28 male adolescent tennis players, aged 13-17 years, voluntarily participated. Volunteers were randomly allocated into two experimental groups: Cluster Set Group (CS) and Traditional Set Group (TS). ). Participants were eligible if they met the following criteria.
- Engaged in tennis training for ≥2 years, with a frequency of ≥3 sessions/week and participation in ≥4 tournaments annually. ii. Had ≥6 months of experience with resistance and plyometric training. iii. No history of lower extremity muscle or joint injuries within the last three months. iv. No regular use of drugs or stimulants for at least six months prior to the study.
The study consisted of two sessions: a familiarization session and an experimental session involving either the Cluster Set (CS) or Traditional Set (TS) protocol. Participants refrained from any exhaustive exercise for at least 48 hours prior to the familiarization session, and a 48-hour passive recovery period was observed between sessions. During the familiarization session, anthropometric measurements (height, body mass, body fat %) were recorded, and participants completed the Physical Activity Readiness Questionnaire (PAR-Q+). Following this, subjects performed a standardized warm-up and familiarization with the testing procedures. The experimental session included the following sequence: (i) Pre-test measurements: Countermovement Jump (CMJ) and Drop Jump (DJ), (ii) execution of either CS or TS plyometric protocol, (iii) immediate Post-15s): CMJ and DJ, (iv) passive recovery (3 min) followed by CMJ and DJ, and assessment using the Total Recovery Quality Scale (TQR), (v) additional passive recovery (3 m) followed by CMJ and DJ and TQR, (vi) final post-test (6 min): CMJ and DJ. Total workout 7 minutes and passive rest 6 minutes (Table 2). Participants were instructed to sleep at least 8 hours the night before testing. Maintain a normal diet and avoid medications, stimulants, ergogenic aids, or performance-enhancing substances. Before testing, all participants completed a 10-minute standardized warm-up, consisting of jogging, galloping, multidirectional running and jumping, calisthenic exercises for joint mobility, static and dynamic stretching. The procedure of the study is shown in Figure 1. All interventions were conducted between 15:00 and 17:00 in a synthetic-floored gym under controlled conditions (temperature: 18-24°C; humidity: 40-60%). Two Way ANOVA repeated measures analysis of variance, 2 groups (CS and TS) x 4 time (Pre, Post-15s; Post-3m and Post-6m) test was performed to compare the data and determine the differences. Bonferroni test was used for pairwise time and group comparisons.
- Conditions
- Plyometric Training
- Being tested
- Cluster Set, Traditional Set
- Keywords
- post-activation potentiation, tennis, explosive power, fatigue, cluster set
- Medical subject headings
- Fatigue
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Cluster SetOther
Cluster Set: Vertical Jumping 3 set, 2 minute rest/set, in 1 set 5 x 2 repetition, 15 sec rest after each 2 repetition.
Traditional SetOther
Traditional set: Vertical jumping 3 set, 3 minute rest / set, in 1 set 10 repetition/set
| Study group | Role | What they receive |
|---|---|---|
| Cluster Set Plyometric Loading | Experimental | Cluster set: plyometric jumping 3 set , each set consist of 2 repetition x 5. Receives: Other: Cluster Set |
| Traditional Set Plyometric Loading | Active comparator | Traditional set: pluometric jumping 3 set, each set consist of 10 repetition. Receives: Other: Traditional Set |
What is being measured
The primary outcome is the main question the study is designed to answer.
Vertical Jump
The counter movement jump (CMJ) test was used to determine vertical jump height. CMJ is widely used to monitor neuromuscular status (i.e. fatigue, performance, strength, and muscle overcompensation) from the analysis of bilateral mechanics and the ability to generate and the ability to generate and absorb ground reaction forces by the lower extremity. The My Jump 2 (Copyright©Carlos Balsalobre Fernández) application of the My Jump Lab tools, based on artificial intelligence (AI) used to measure CMJ. An iPad Pro 11-inch Model Air M2 (Apple Inc. Cupertino, CA) used to capture each trial.
Measured: From enrollment to the end of treatment at 15 days
Vertical Jump
The counter movement jump (CMJ) test was used to determine vertical jump high. The My Jump 2 (Copyright©Carlos Balsalobre Fernández) application of the My Jump Lab tools, based on artificial intelligence (AI) used to measure CMJ. An iPad Pro 11-inch Model Air M2 (Apple Inc. Cupertino, CA) used to capture each trial.
Measured: From enrollment to the end of treatment at 15 days
Reactive Strength Index (RSI-mod)
The Drop Jump (DJ) test was used to determine the RSI-mod. The DJ can be used to determine the intensity of plyometric exercises, measure lower body reactive strength, monitor neuromuscular fatigue and test lower extremity stiffness. The DJ is a frequently analyzed metric for determining the RSI. It assesses an athlete's ability to rapidly transition from eccentric to concentric contraction and how much force the athlete can produce in the shortest possible time. There are multiple calculations available to measure the RSI-mod, but the most used is jump height (meters) ÷ ground contact time (seconds). Participants were asked to perform the DJ test by dropping to the ground from a 40 cm frame height with their hands on their hips and jumping upwards with maximal effort in the shortest time. Vertical jump distance and RSI were determined using the My Jump 2 app.
Measured: From enrollment to the end of treatment at 15 days
Secondary outcomes (2)
Body composition
Participants' body weight and body fat percentage were assessed using a Tanita BC-418 bioelectrical impedance analyzer (Tanita Corp., Tokyo, Japan). Height was measured with a Seca stadiometer (Seca Instruments Ltd., Hamburg, Germany).
Measured: From enrollment to the end of treatment at 15 days
Recovery
Recovery perception was evaluated using the Turkish version of the Total Quality Recovery (TQR) scale. This scale ranges from 6 points ("very poor recovery") to 20 points ("very good recovery"). Participants completed the TQR at the end of each 3-minute passive rest period following Post-15s and Post-3m jump tests.
Measured: From enrollment to the end of treatment at 15 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Jun 2026
- Study start15 Mar 2025
- Primary completion30 Mar 2025
- Study completion15 Apr 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (9)Papers the sponsor has linked to this study.
- Other trials for Plyometric TrainingStudies 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
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Participants were randomly allocated into two experimental groups: Cluster Set Group (CS) and Traditional Set Group (TS).
- Masking
- None (open label)
- Enrolment
- 28 participants (actual)
Sponsor and investigators
- Lead sponsor
- Uludag University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ramiz ARABACI, Uludag University
- Investigators
- Ramiz ARABACI, Prof.Dr., Principal investigator, Bursa Uludag University, Faculty of Sport Sciences
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07640724
- Sponsor's protocol ID
- Date10.01.2025, Approval No460
- Acronym
- TENNIS_CLS-TRD
- Status last verified
- Jun 2026
- First submitted
- 2 Jun 2026
- Last updated
- 11 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: All IPD collected throughout the trial, only IPD used in the results publication.
Publications
Dello Iacono A, Beato M, Halperin I. The Effects of Cluster-Set and Traditional-Set Postactivation Potentiation Protocols on Vertical Jump Performance. Int J Sports Physiol Perform. 2019 Oct 15;15(4):464-469. doi: 10.1123/ijspp.2019-0186. Print 2020 Apr 1.
PubMed 31614331Feng D, Yang W, Li L. Countermovement jump and reactive strength index of artistic gymnasts improve more with cluster-based plyometric training than with traditional methods. Sci Rep. 2024 Oct 21;14(1):24700. doi: 10.1038/s41598-024-76150-1.
PubMed 39433944Chen L, Zhang Z, Huang Z, Yang Q, Gao C, Ji H, Sun J, Li D. Meta-Analysis of the Effects of Plyometric Training on Lower Limb Explosive Strength in Adolescent Athletes. Int J Environ Res Public Health. 2023 Jan 19;20(3):1849. doi: 10.3390/ijerph20031849.
PubMed 36767213Deng N, Soh KG, Huang D, Abdullah B, Luo S, Rattanakoses W. Effects of plyometric training on skill and physical performance in healthy tennis players: A systematic review and meta-analysis. Front Physiol. 2022 Nov 24;13:1024418. doi: 10.3389/fphys.2022.1024418. eCollection 2022.
PubMed 36505069Salonikidis K, Zafeiridis A. The effects of plyometric, tennis-drills, and combined training on reaction, lateral and linear speed, power, and strength in novice tennis players. J Strength Cond Res. 2008 Jan;22(1):182-91. doi: 10.1519/JSC.0b013e31815f57ad.
PubMed 18296973Hernandez-Davo JL, Loturco I, Pereira LA, Cesari R, Pratdesaba J, Madruga-Parera M, Sanz-Rivas D, Fernandez-Fernandez J. Relationship between Sprint, Change of Direction, Jump, and Hexagon Test Performance in Young Tennis Players. J Sports Sci Med. 2021 Mar 5;20(2):197-203. doi: 10.52082/jssm.2021.197. eCollection 2021 Jun.
PubMed 33948097Zhang F, Liu Y, Liu J, Yeremenko O, Shi L. The effects of plyometric training on physical fitness in adolescent team sports: a systematic review and meta-analysis. Front Physiol. 2026 Jan 21;17:1760239. doi: 10.3389/fphys.2026.1760239. eCollection 2026.
PubMed 41647156Vuong JL, Fett J, Ulbricht A, Ferrauti A. Physical determinants, intercorrelations, and relevance of movement speed components in elite junior tennis players. Eur J Sport Sci. 2022 Dec;22(12):1805-1815. doi: 10.1080/17461391.2021.2005150. Epub 2022 Jan 6.
PubMed 34753414Kozinc Z, Sarabon N. Bilateral deficit in countermovement jump and its association with change of direction performance in basketball and tennis players. Sports Biomech. 2024 Oct;23(10):1370-1383. doi: 10.1080/14763141.2021.1942965. Epub 2021 Jun 16.
PubMed 34132633
Study at a glance
From the registry record, last updated by the sponsor on 11 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Acute Effects of Cluster-Set vs. Traditional-Set Plyometric Loading on Countermovement Jump and Reactive Strength Index in Young Tennis Players
- ClinicalTrials.gov ID
- NCT07640724
- Acronym / sponsor ID
- TENNIS_CLS-TRD / Date10.01.2025, Approval No460
- Conditions
- Plyometric Training
- Keywords
- post-activation potentiation, tennis, explosive power, fatigue, cluster set
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 28 participants (actual)
- Lead sponsor
- Uludag UniversityUniversity, hospital or other
- Study start
- 15 Mar 2025 (actual)
- Primary completion
- 30 Mar 2025 (actual)
- Study completion
- 15 Apr 2025 (actual)
- First posted
- 11 Jun 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.
The present study aimed to compare the acute effects of cluster-set (CS) and traditional-set (TS) plyometric loading protocols on countermovement jump (CMJ) performance and reactive strength index (RSI-mod) in young tennis players.
Twenty-eight male tennis players (age: 16.7 ± 1.3 years) were randomly assigned to either a CS or TS group. Following a familiarization session, participants completed an experimental session including pre-tests (CMJ and drop jump), a plyometric loading protocol (CS: 3 × [5 × 2 repetitions, 15 s intra-set rest, 2 min between sets]; TS: 3 × 10 repetitions, 3 min between sets), and post-tests at 15 s, 3 min, and 6 min. CMJ height and RSI-mod were assessed using the My Jump 2 application. Borg Scale, Total Quality Recovery (TQR) were apply after post-tests at 15 s, 3 min, and 6 min.
Detailed description
The present study aimed to compare the acute effects of cluster-set (CS) and traditional-set (TS) plyometric loading protocols on countermovement jump (CMJ) performance and reactive strength index (RSI-mod) in young tennis players. It was hypothesized that the CS method would elicit superior acute improvements in jump parameters and recovery due to reduced fatigue compared to the TS method. A total of 28 male adolescent tennis players, aged 13-17 years, voluntarily participated. Volunteers were randomly allocated into two experimental groups: Cluster Set Group (CS) and Traditional Set Group (TS). ). Participants were eligible if they met the following criteria.
- Engaged in tennis training for ≥2 years, with a frequency of ≥3 sessions/week and participation in ≥4 tournaments annually. ii. Had ≥6 months of experience with resistance and plyometric training. iii. No history of lower extremity muscle or joint injuries within the last three months. iv. No regular use of drugs or stimulants for at least six months prior to the study.
The study consisted of two sessions: a familiarization session and an experimental session involving either the Cluster Set (CS) or Traditional Set (TS) protocol. Participants refrained from any exhaustive exercise for at least 48 hours prior to the familiarization session, and a 48-hour passive recovery period was observed between sessions. During the familiarization session, anthropometric measurements (height, body mass, body fat %) were recorded, and participants completed the Physical Activity Readiness Questionnaire (PAR-Q+). Following this, subjects performed a standardized warm-up and familiarization with the testing procedures. The experimental session included the following sequence: (i) Pre-test measurements: Countermovement Jump (CMJ) and Drop Jump (DJ), (ii) execution of either CS or TS plyometric protocol, (iii) immediate Post-15s): CMJ and DJ, (iv) passive recovery (3 min) followed by CMJ and DJ, and assessment using the Total Recovery Quality Scale (TQR), (v) additional passive recovery (3 m) followed by CMJ and DJ and TQR, (vi) final post-test (6 min): CMJ and DJ. Total workout 7 minutes and passive rest 6 minutes (Table 2). Participants were instructed to sleep at least 8 hours the night before testing. Maintain a normal diet and avoid medications, stimulants, ergogenic aids, or performance-enhancing substances. Before testing, all participants completed a 10-minute standardized warm-up, consisting of jogging, galloping, multidirectional running and jumping, calisthenic exercises for joint mobility, static and dynamic stretching. The procedure of the study is shown in Figure 1. All interventions were conducted between 15:00 and 17:00 in a synthetic-floored gym under controlled conditions (temperature: 18-24°C; humidity: 40-60%). Two Way ANOVA repeated measures analysis of variance, 2 groups (CS and TS) x 4 time (Pre, Post-15s; Post-3m and Post-6m) test was performed to compare the data and determine the differences. Bonferroni test was used for pairwise time and group comparisons.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- Participants were randomly allocated into two experimental groups: Cluster Set Group (CS) and Traditional Set Group (TS).
| Arm | Type | Receives |
|---|---|---|
| Cluster Set Plyometric Loading | Experimental | Other: Cluster SetCluster set: plyometric jumping 3 set , each set consist of 2 repetition x 5. |
| Traditional Set Plyometric Loading | Active comparator | Other: Traditional SetTraditional set: pluometric jumping 3 set, each set consist of 10 repetition. |
Who may qualify
- Ages
- 13 to 17 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Child
Key inclusion criteria (4 listed)
- Engaged in tennis training for ≥2 years, with a frequency of ≥3 sessions/week and participation in ≥4 tournaments annually.
- Had ≥6 months of experience with resistance and plyometric training.
- No history of lower extremity muscle or joint injuries within the last three months.
- No regular use of drugs or stimulants for at least six months prior to the study.
Key exclusion criteria (1 listed)
- -
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 |
|---|---|---|
| Cluster SetCluster Set: Vertical Jumping 3 set, 2 minute rest/set, in 1 set 5 x 2 repetition, 15 sec rest after each 2 repetition. | Other | Cluster Set Plyometric Loading |
| Traditional SetTraditional set: Vertical jumping 3 set, 3 minute rest / set, in 1 set 10 repetition/set | Other | Traditional Set Plyometric Loading |
Primary outcome
Vertical Jump
Time frame: From enrollment to the end of treatment at 15 days
The counter movement jump (CMJ) test was used to determine vertical jump height. CMJ is widely used to monitor neuromuscular status (i.e. fatigue, performance, strength, and muscle overcompensation) from the analysis of bilateral mechanics and the ability to generate and the ability to generate and absorb ground reaction forces by the lower extremity. The My Jump 2 (Copyright©Carlos Balsalobre Fernández) application of the My Jump Lab tools, based on artificial intelligence (AI) used to measure CMJ. An iPad Pro 11-inch Model Air M2 (Apple Inc. Cupertino, CA) used to capture each trial.
Vertical Jump
Time frame: From enrollment to the end of treatment at 15 days
The counter movement jump (CMJ) test was used to determine vertical jump high. The My Jump 2 (Copyright©Carlos Balsalobre Fernández) application of the My Jump Lab tools, based on artificial intelligence (AI) used to measure CMJ. An iPad Pro 11-inch Model Air M2 (Apple Inc. Cupertino, CA) used to capture each trial.
Reactive Strength Index (RSI-mod)
Time frame: From enrollment to the end of treatment at 15 days
The Drop Jump (DJ) test was used to determine the RSI-mod. The DJ can be used to determine the intensity of plyometric exercises, measure lower body reactive strength, monitor neuromuscular fatigue and test lower extremity stiffness. The DJ is a frequently analyzed metric for determining the RSI. It assesses an athlete's ability to rapidly transition from eccentric to concentric contraction and how much force the athlete can produce in the shortest possible time. There are multiple calculations available to measure the RSI-mod, but the most used is jump height (meters) ÷ ground contact time (seconds). Participants were asked to perform the DJ test by dropping to the ground from a 40 cm frame height with their hands on their hips and jumping upwards with maximal effort in the shortest time. Vertical jump distance and RSI were determined using the My Jump 2 app.
2 secondary outcomes
Body composition
Time frame: From enrollment to the end of treatment at 15 days
Recovery
Time frame: From enrollment to the end of treatment at 15 days
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 11 Jun 2026.
- Background: PubMed 31614331Dello Iacono A, Beato M, Halperin I. The Effects of Cluster-Set and Traditional-Set Postactivation Potentiation Protocols on Vertical Jump Performance. Int J Sports Physiol Perform. 2019 Oct 15;15(4):464-469. doi: 10.1123/ijspp.2019-0186. Print 2020 Apr 1.
- Background: PubMed 39433944Feng D, Yang W, Li L. Countermovement jump and reactive strength index of artistic gymnasts improve more with cluster-based plyometric training than with traditional methods. Sci Rep. 2024 Oct 21;14(1):24700. doi: 10.1038/s41598-024-76150-1.
- Background: PubMed 36767213Chen L, Zhang Z, Huang Z, Yang Q, Gao C, Ji H, Sun J, Li D. Meta-Analysis of the Effects of Plyometric Training on Lower Limb Explosive Strength in Adolescent Athletes. Int J Environ Res Public Health. 2023 Jan 19;20(3):1849. doi: 10.3390/ijerph20031849.
- Background: PubMed 36505069Deng N, Soh KG, Huang D, Abdullah B, Luo S, Rattanakoses W. Effects of plyometric training on skill and physical performance in healthy tennis players: A systematic review and meta-analysis. Front Physiol. 2022 Nov 24;13:1024418. doi: 10.3389/fphys.2022.1024418. eCollection 2022.
- Background: PubMed 18296973Salonikidis K, Zafeiridis A. The effects of plyometric, tennis-drills, and combined training on reaction, lateral and linear speed, power, and strength in novice tennis players. J Strength Cond Res. 2008 Jan;22(1):182-91. doi: 10.1519/JSC.0b013e31815f57ad.
- Background: PubMed 33948097Hernandez-Davo JL, Loturco I, Pereira LA, Cesari R, Pratdesaba J, Madruga-Parera M, Sanz-Rivas D, Fernandez-Fernandez J. Relationship between Sprint, Change of Direction, Jump, and Hexagon Test Performance in Young Tennis Players. J Sports Sci Med. 2021 Mar 5;20(2):197-203. doi: 10.52082/jssm.2021.197. eCollection 2021 Jun.
- Background: PubMed 41647156Zhang F, Liu Y, Liu J, Yeremenko O, Shi L. The effects of plyometric training on physical fitness in adolescent team sports: a systematic review and meta-analysis. Front Physiol. 2026 Jan 21;17:1760239. doi: 10.3389/fphys.2026.1760239. eCollection 2026.
- Background: PubMed 34753414Vuong JL, Fett J, Ulbricht A, Ferrauti A. Physical determinants, intercorrelations, and relevance of movement speed components in elite junior tennis players. Eur J Sport Sci. 2022 Dec;22(12):1805-1815. doi: 10.1080/17461391.2021.2005150. Epub 2022 Jan 6.
- Background: PubMed 34132633Kozinc Z, Sarabon N. Bilateral deficit in countermovement jump and its association with change of direction performance in basketball and tennis players. Sports Biomech. 2024 Oct;23(10):1370-1383. doi: 10.1080/14763141.2021.1942965. Epub 2021 Jun 16.
- Individual participant dataSharing planned: No. All IPD collected throughout the trial, only IPD used in the results publication.
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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.
Ramiz ARABACI, Prof.Dr. principal investigator
Bursa Uludag University, Faculty of Sport Sciences
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Cluster Set and Traditional Set in people with Plyometric Training, run by Uludag 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 4 inclusion and 1 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 11 Jun 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 (time frame: From enrollment to the end of treatment at 15 days). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT07640724, which also lists 9 linked publications.
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 11 Jun 2026.