Athletic Performance EnhancementMPPTNCT07740096
Effects of Microdosed Plyometric Training on Lower-Limb Neuromuscular Function and Sport-Specific Performance in Rope-Skipping Athletes
A study testing Microdosed Plyometric Training and Traditional Concentrated Plyometric Training in people with Athletic Performance Enhancement, run by Chongqing Normal University at 1 site in China.
Trial summary
The goal of this clinical trial is to compare two ways of scheduling plyometric training in rope-skipping athletes. The study will examine whether short and frequent training sessions have different effects on lower-limb muscle function, rope-skipping performance, and perceived fatigue compared with longer training… Read more about this study
- Who is it for?
- Ages 18 to 25 yearsHealthy volunteers can take part
- Conditions the study is for
- Athletic Performance Enhancement
- What is being tested?
- Microdosed Plyometric Training and Traditional Concentrated Plyometric Training
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 60 participants
- Where
- 1 siteChina
- Study dates
- 1 Jun 2026to 31 Aug 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 18 to 25 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- * Rope-skipping athletes with at least 1 year of rope-skipping training experience
- Able to complete regular rope-skipping training and all study-related testing procedures
- No severe lower-limb sports injury within the previous 3 months
- No cardiovascular disease, neurological disease, or other contraindication to exercise
- Willing to participate voluntarily and provide written informed consent
- For participants who are minors, written informed consent must also be obtained from a parent or legal
Who cannot join
- * Participation in additional systematic strength training or plyometric training during the intervention period
- Insufficient adherence to the prescribed training program
- Injury, physical discomfort, or another condition occurring during testing or intervention that prevents continued participation in the study
Trial locations and contacts
1 site in 1 country.
China1 site
Chengdu College of Arts and Sciences
Chongqing, Chongqing Municipality, 401331
About this study
Official title: Effects of Microdosed Plyometric Training on Lower-Limb Neuromuscular Function and Sport-Specific Performance in Rope-Skipping Athletes: A Randomized Controlled Trial
The goal of this clinical trial is to compare two ways of scheduling plyometric training in rope-skipping athletes. The study will examine whether short and frequent training sessions have different effects on lower-limb muscle function, rope-skipping performance, and perceived fatigue compared with longer training sessions performed less often.
Approximately 60 rope-skipping athletes will be randomly assigned to one of two groups. Both groups will continue their regular rope-skipping training and complete an additional 8-week plyometric training program. One group will perform short plyometric training sessions five days per week. The other group will perform concentrated plyometric training sessions twice per week. The exercise content, weekly training volume, and training progression will be kept as similar as possible between the two groups.
Researchers will assess lower-limb muscle function and rope-skipping-specific performance before and after the intervention. Training attendance, completion, perceived exertion, muscle soreness, and adverse events will also be recorded. The study aims to determine whether distributing plyometric training across more frequent and shorter sessions produces different training effects from concentrating the training into fewer sessions.
Read the detailed description
This study is an 8-week, two-arm, parallel-group randomized controlled trial designed to compare microdosed plyometric training with traditional concentrated plyometric training in rope-skipping athletes.
Approximately 60 eligible participants will be randomly allocated to the microdosed plyometric training group or the traditional concentrated plyometric training group, with approximately 30 participants in each group. Participants in both groups will maintain their regular rope-skipping-specific training throughout the study.
The microdosed plyometric training group will perform high-frequency, short-duration plyometric training sessions five days per week. The traditional concentrated plyometric training group will perform plyometric training twice per week using a more concentrated training schedule. The exercise content, total weekly training duration, weekly jump contacts, and progression principles will be kept as consistent as possible between the groups. The main difference will be the frequency and amount of training completed during each session.
Lower-limb neuromuscular function and rope-skipping-specific performance will be assessed before and after the 8-week intervention. Assessments will include measures related to lower-limb muscle strength, explosive performance, and sport-specific performance. Researchers will also record training attendance, training completion, perceived exertion, muscle soreness, and adverse events during the intervention.
The study will evaluate whether the distribution of plyometric training across the week influences physical performance, sport-specific performance, fatigue responses, and training tolerance in rope-skipping athletes.
- Conditions
- Athletic Performance Enhancement
- Being tested
- Microdosed Plyometric Training, Traditional Concentrated Plyometric Training
- Keywords
- Microdosed Plyometric Training, Rope Skipping, Lower-Limb Neuromuscular Function, Explosive Power, Training Frequency, Plyometric Exercise
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Microdosed Plyometric TrainingOther
Participants assigned to this intervention will continue their regular rope-skipping-specific training and complete an 8-week microdosed plyometric training program. Plyometric training will be distributed across five sessions per week using a high-frequency, short-duration format. The exercise content, total weekly training duration, total weekly jump contacts, and progression principles will be matched as closely as possible to the traditional concentrated plyometric training intervention. The primary difference between the interventions will be training frequency and the amount of training completed in each session.
Traditional Concentrated Plyometric TrainingOther
Participants assigned to this intervention will continue their regular rope-skipping-specific training and complete an 8-week traditional concentrated plyometric training program. Plyometric training will be performed in two concentrated sessions per week. The exercise content, total weekly training duration, total weekly jump contacts, and progression principles will be matched as closely as possible to the microdosed plyometric training intervention. The primary difference between the interventions will be training frequency and the amount of training completed in each session.
| Study group | Role | What they receive |
|---|---|---|
| Microdosed Plyometric Training Group | Experimental | Participants will maintain their regular rope-skipping training and complete high-frequency, short-duration plyometric training five days per week for 8 weeks. Receives: Other: Microdosed Plyometric Training |
| Traditional Concentrated Plyometric Training Group | Active comparator | Traditional Concentrated Plyometric Training Receives: Other: Traditional Concentrated Plyometric Training |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change From Baseline in Isokinetic Knee Extensor Total Work at Week 8
Lower-limb muscular endurance will be assessed using an isokinetic dynamometer. Following a standardized warm-up and familiarization procedure, participants will perform 30 consecutive maximal concentric knee-extension contractions with the dominant lower limb at an angular velocity of 180 degrees per second. The total work performed by the knee extensors across all valid repetitions will be recorded and reported in joules (J). Change from baseline will be calculated as the Week 8 value minus the baseline value. Higher values indicate greater lower-limb muscular endurance.
Measured: Baseline and post-intervention at Week 8
Change From Baseline in Isokinetic Knee Extensor Peak Torque at Week 8
Lower-limb muscle strength will be assessed using an isokinetic dynamometer. Following a standardized warm-up and familiarization procedure, participants will perform maximal concentric knee-extension contractions with the dominant lower limb at an angular velocity of 60 degrees per second. The highest peak torque obtained from the valid repetitions will be recorded and reported in newton-metres (N·m). Change from baseline will be calculated as the Week 8 value minus the baseline value. Higher values indicate greater lower-limb muscle strength.
Measured: Baseline and post-intervention at Week 8
Change From Baseline in Standing Broad Jump Distance at Week 8
Lower-limb explosive performance will be assessed using the standing broad jump test. Following a standardized warm-up, participants will stand behind the take-off line with both feet parallel and jump forward as far as possible using a simultaneous two-foot take-off and landing. Each participant will complete three valid trials, with an adequate recovery interval between trials. The longest valid horizontal distance from the take-off line to the nearest point of contact on landing will be recorded in metres (m). Change from baseline will be calculated as the Week 8 value minus the baseline value. Higher values indicate better lower-limb explosive performance.
Measured: Baseline and immediately after the 8-week intervention
Secondary outcomes (2)
Change From Baseline in the Number of Valid Repetitions Completed During the 30-Second Single-Rope Speed Test at Week 8
Rope-skipping-specific performance will be assessed using the 30-second single-rope speed test. Following a standardized warm-up, participants will perform as many valid single-rope skipping repetitions as possible within 30 seconds. One valid repetition will be counted when the rope passes completely under both feet during a successfully completed jump. Repetitions involving rope entanglement, interruption, or unsuccessful rope passage will not be counted. The total number of valid repetitions completed within 30 seconds will be recorded. Change from baseline will be calculated as the Week 8 value minus the baseline value. Higher values indicate better rope-skipping-specific performance.
Measured: Baseline and immediately after the 8-week intervention
Change From Baseline in Isokinetic Knee Extensor Fatigue Index at Week 8
Lower-limb muscular fatigue will be assessed during the repeated isokinetic knee-extension test performed at an angular velocity of 180 degrees per second. The fatigue index will be calculated using the mean work of the first three and final three valid repetitions according to the following formula: [(mean work of the first three repetitions - mean work of the final three repetitions) / mean work of the first three repetitions] × 100. The fatigue index will be reported as a percentage (%). Change from baseline will be calculated as the Week 8 value minus the baseline value. Lower values indicate less muscular fatigue and better muscular endurance.
Measured: Baseline and immediately after the 8-week intervention
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted31 Jul 2026
- Study start1 Jun 2026
- Primary completion31 Aug 2026 (estimated)
- Study completion31 Aug 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Athletic Performance EnhancementStudies 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
- Masking
- None (open label)
- Enrolment
- 60 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Chongqing Normal University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Chao Wang, Chongqing Normal University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07740096
- Sponsor's protocol ID
- MPPT-RCT-2026-001
- Acronym
- MPPT
- Status last verified
- Jul 2026
- First submitted
- 22 Jul 2026
- Last updated
- 31 Jul 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: Individual participant data will not be shared because the current informed consent and ethics approval do not include the sharing of participant-level data with external researchers.
Study at a glance
From the registry record, last updated by the sponsor on 31 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Microdosed Plyometric Training on Lower-Limb Neuromuscular Function and Sport-Specific Performance in Rope-Skipping Athletes: A Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT07740096
- Acronym / sponsor ID
- MPPT / MPPT-RCT-2026-001
- Conditions
- Athletic Performance Enhancement
- Keywords
- Microdosed Plyometric Training, Rope Skipping, Lower-Limb Neuromuscular Function, Explosive Power, Training Frequency, Plyometric Exercise
- Study type
- Interventional
- Recruitment status
- Active, not recruiting
- Enrolment
- 60 participants (estimated)
- Lead sponsor
- Chongqing Normal UniversityUniversity, hospital or other
- Study start
- 1 Jun 2026 (actual)
- Primary completion
- 31 Aug 2026 (estimated)
- Study completion
- 31 Aug 2026 (estimated)
- First posted
- 31 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.
The goal of this clinical trial is to compare two ways of scheduling plyometric training in rope-skipping athletes. The study will examine whether short and frequent training sessions have different effects on lower-limb muscle function, rope-skipping performance, and perceived fatigue compared with longer training sessions performed less often.
Approximately 60 rope-skipping athletes will be randomly assigned to one of two groups. Both groups will continue their regular rope-skipping training and complete an additional 8-week plyometric training program. One group will perform short plyometric training sessions five days per week. The other group will perform concentrated plyometric training sessions twice per week. The exercise content, weekly training volume, and training progression will be kept as similar as possible between the two groups.
Researchers will assess lower-limb muscle function and rope-skipping-specific performance before and after the intervention. Training attendance, completion, perceived exertion, muscle soreness, and adverse events will also be recorded. The study aims to determine whether distributing plyometric training across more frequent and shorter sessions produces different training effects from concentrating the training into fewer sessions.
Detailed description
This study is an 8-week, two-arm, parallel-group randomized controlled trial designed to compare microdosed plyometric training with traditional concentrated plyometric training in rope-skipping athletes.
Approximately 60 eligible participants will be randomly allocated to the microdosed plyometric training group or the traditional concentrated plyometric training group, with approximately 30 participants in each group. Participants in both groups will maintain their regular rope-skipping-specific training throughout the study.
The microdosed plyometric training group will perform high-frequency, short-duration plyometric training sessions five days per week. The traditional concentrated plyometric training group will perform plyometric training twice per week using a more concentrated training schedule. The exercise content, total weekly training duration, weekly jump contacts, and progression principles will be kept as consistent as possible between the groups. The main difference will be the frequency and amount of training completed during each session.
Lower-limb neuromuscular function and rope-skipping-specific performance will be assessed before and after the 8-week intervention. Assessments will include measures related to lower-limb muscle strength, explosive performance, and sport-specific performance. Researchers will also record training attendance, training completion, perceived exertion, muscle soreness, and adverse events during the intervention.
The study will evaluate whether the distribution of plyometric training across the week influences physical performance, sport-specific performance, fatigue responses, and training tolerance in rope-skipping athletes.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Microdosed Plyometric Training Group | Experimental | Other: Microdosed Plyometric TrainingParticipants will maintain their regular rope-skipping training and complete high-frequency, short-duration plyometric training five days per week for 8 weeks. |
| Traditional Concentrated Plyometric Training Group | Active comparator | Other: Traditional Concentrated Plyometric TrainingTraditional Concentrated Plyometric Training |
Who may qualify
- Ages
- 18 to 25 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (6 listed)
- * Rope-skipping athletes with at least 1 year of rope-skipping training experience
Key exclusion criteria (3 listed)
- * Participation in additional systematic strength training or plyometric training during the intervention period
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 |
|---|---|---|
| Microdosed Plyometric TrainingParticipants assigned to this intervention will continue their regular rope-skipping-specific training and complete an 8-week microdosed plyometric training program. Plyometric training will be distributed across five sessions per week using a high-frequency, short-duration format. The exercise content, total weekly training duration, total weekly jump contacts, and progression principles will be matched as closely as possible to the traditional concentrated plyometric training intervention. The primary difference between the interventions will be training frequency and the amount of training completed in each session. | Other | Microdosed Plyometric Training Group |
| Traditional Concentrated Plyometric TrainingParticipants assigned to this intervention will continue their regular rope-skipping-specific training and complete an 8-week traditional concentrated plyometric training program. Plyometric training will be performed in two concentrated sessions per week. The exercise content, total weekly training duration, total weekly jump contacts, and progression principles will be matched as closely as possible to the microdosed plyometric training intervention. The primary difference between the interventions will be training frequency and the amount of training completed in each session. | Other | Traditional Concentrated Plyometric Training Group |
Primary outcome
Change From Baseline in Isokinetic Knee Extensor Total Work at Week 8
Time frame: Baseline and post-intervention at Week 8
Lower-limb muscular endurance will be assessed using an isokinetic dynamometer. Following a standardized warm-up and familiarization procedure, participants will perform 30 consecutive maximal concentric knee-extension contractions with the dominant lower limb at an angular velocity of 180 degrees per second. The total work performed by the knee extensors across all valid repetitions will be recorded and reported in joules (J). Change from baseline will be calculated as the Week 8 value minus the baseline value. Higher values indicate greater lower-limb muscular endurance.
Change From Baseline in Isokinetic Knee Extensor Peak Torque at Week 8
Time frame: Baseline and post-intervention at Week 8
Lower-limb muscle strength will be assessed using an isokinetic dynamometer. Following a standardized warm-up and familiarization procedure, participants will perform maximal concentric knee-extension contractions with the dominant lower limb at an angular velocity of 60 degrees per second. The highest peak torque obtained from the valid repetitions will be recorded and reported in newton-metres (N·m). Change from baseline will be calculated as the Week 8 value minus the baseline value. Higher values indicate greater lower-limb muscle strength.
Change From Baseline in Standing Broad Jump Distance at Week 8
Time frame: Baseline and immediately after the 8-week intervention
Lower-limb explosive performance will be assessed using the standing broad jump test. Following a standardized warm-up, participants will stand behind the take-off line with both feet parallel and jump forward as far as possible using a simultaneous two-foot take-off and landing. Each participant will complete three valid trials, with an adequate recovery interval between trials. The longest valid horizontal distance from the take-off line to the nearest point of contact on landing will be recorded in metres (m). Change from baseline will be calculated as the Week 8 value minus the baseline value. Higher values indicate better lower-limb explosive performance.
2 secondary outcomes
Change From Baseline in the Number of Valid Repetitions Completed During the 30-Second Single-Rope Speed Test at Week 8
Time frame: Baseline and immediately after the 8-week intervention
Change From Baseline in Isokinetic Knee Extensor Fatigue Index at Week 8
Time frame: Baseline and immediately after the 8-week intervention
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 31 Jul 2026.
- Individual participant dataSharing planned: No. Individual participant data will not be shared because the current informed consent and ethics approval do not include the sharing of participant-level data with external researchers.
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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 Microdosed Plyometric Training and Traditional Concentrated Plyometric Training in people with Athletic Performance Enhancement, run by Chongqing Normal University at 1 site in China.
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 6 inclusion and 3 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 31 Jul 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 China. 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?
Change From Baseline in Isokinetic Knee Extensor Total Work at Week 8 (time frame: Baseline and post-intervention at Week 8). 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?
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 31 Jul 2026.