An interventional study of Integrated Neuromuscular Training and Conventional Volleyball Instruction in Athletic Performance Enhancement, sponsored by Capital University of Physical Education and Sports, China. Completed at 1 site in China. Open to participants aged 18 Years to 25 Years. Per ClinicalTrials.gov, last updated 2026-10-09.
Sponsored by Capital University of Physical Education and Sports, China · Not applicable, Interventional, and Health services research
This randomized controlled study evaluated whether adding integrated neuromuscular training (INT) to regular volleyball instruction could improve repeated jumping performance in collegiate volleyball players. Thirty-four participants were randomly assigned to an INT group or a control group. Both groups continued the same conventional volleyball instruction, while the INT group also received structured neuromuscular training twice per week for 9 weeks. The INT program included plyometric exercises, strength training, core stabilization, and speed-agility drills. Repeated jumping performance was assessed before the intervention, immediately after the 9-week intervention, and after a further 3-week follow-up period. Participants completed three Continuous Countermovement Semi-Squat Jump (CCSJ) protocols: five consecutive jumps, continuous jumping for 15 seconds, and continuous jumping for 30 seconds. Outcomes included jump height, peak force, mean force, and fatigue index.
Volleyball requires athletes to perform repeated explosive jumping actions during training and competition. The ability to maintain force production and jumping performance during repeated efforts is therefore an important component of volleyball-specific physical performance. Integrated neuromuscular training (INT) combines multiple training components, including plyometric exercise, strength training, core stabilization, and speed-agility training.
This study used a randomized controlled design to investigate the effects of adding INT to conventional volleyball instruction on repeated jumping performance in collegiate volleyball players. A total of 34 participants were randomly allocated to an INT group or a control group, with 17 participants in each group. Both groups received the same conventional volleyball instruction, including dynamic stretching and low-intensity aerobic warm-up, technical training, and tactical drills. In addition to the conventional volleyball program, participants in the INT group completed a structured INT program twice per week for 9 weeks. The control group continued conventional volleyball instruction without the additional INT program.
Repeated jumping performance was evaluated at three time points: baseline, immediately after the 9-week intervention, and after a 3-week follow-up period. Testing was performed using three Continuous Countermovement Semi-Squat Jump (CCSJ) protocols: five consecutive maximal jumps (5×), continuous maximal jumping for 15 seconds, and continuous maximal jumping for 30 seconds. Jump performance was assessed using a force plate. The main performance variables were jump height, peak force, mean force, and fatigue index.
The study was designed to determine whether changes in repeated jumping performance over time differed between the INT and control groups and whether any changes observed after the intervention were maintained during the 3-week follow-up period.
Capital University of Physical Education and Sports, China is the lead sponsor of 9 studies on the registry; 3 are open to participants now.
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Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants received conventional volleyball instruction plus additional integrated neuromuscular training (INT) twice per week for 9 weeks. The INT program incorporated plyometric training, strength training, core stabilization, and speed-agility exercises.
Behavioral: Integrated Neuromuscular Training · Behavioral: Conventional Volleyball Instruction
Participants received conventional volleyball instruction without the additional integrated neuromuscular training program. Conventional instruction included dynamic stretching and low-intensity aerobic warm-up, volleyball technical training, and tactical drills.
Behavioral: Integrated Neuromuscular Training · Behavioral: Conventional Volleyball Instruction
Integrated neuromuscular training was provided twice per week for 9 weeks. The program consisted of plyometric training strength training core stabilization and speed-agility training. The training program was progressively structured across initial improvement and reinforcement phases.
Conventional volleyball instruction included a 5-10 minute dynamic stretching and low-intensity aerobic warm-up followed by volleyball technical training and tactical drills.
Peak Force During Repeated Jumping
Peak force was measured during the 5×, 15-second, and 30-second CCSJ protocols using the ELIGA-T132 force plate. Peak force represents the maximum force generated during the repeated-jump task and was expressed in newtons (N).
Time frame: Baseline, immediately after the 9-week intervention, and at the 3-week follow-up (week 12)
Jump Height During Repeated Jumping
Jump height was measured during three Continuous Countermovement Semi-Squat Jump (CCSJ) protocols: five consecutive maximal jumps (5×), continuous maximal jumping for 15 seconds, and continuous maximal jumping for 30 seconds. Jump height was measured using the ELIGA-T132 force plate and expressed in meters (m).
Time frame: Baseline, immediately after the 9-week intervention, and at the 3-week follow-up (week 12)
Plan to share: Yes — De-identified individual participant data underlying the results reported in this study may be made available to qualified researchers upon reasonable request to the corresponding author. Requests will be considered based on the scientific purpose of the proposed use and applicable ethical and privacy requirements.
Ran from Sep 2024 to primary completion in Nov 2024, 2 months.
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This study is completed, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.
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Capital University of Physical Education and Sports, China