Clinical trial NCT06875570: Effects of Combined Training Protocol in Volleyball Players
Official title: Effects of a 12-Week Combined Training Protocols on Aerobic Fitness, Technical Skills, and Psychophysiological Responses in Young Recreational Volleyball Players
Study type: INTERVENTIONAL
Overall status: ACTIVE_NOT_RECRUITING
Phase: NA
Conditions: Volleyball
Performance
Training
Technical Skills
Keywords: Volleyball
Small Sided Games
Pliometric
Jump rope
Lead sponsor: Karabuk University
Sponsor class: OTHER
First posted: 2025-03-13
Enrollment: 30
Sex: MALE
Minimum age (years): 18
Maximum age (years): 25
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: The 12-week training will take place during the preparation period. At the beginning and end of the 12-week period, vertical jump test, 60 seconds countermovement jump (CMJ) test, change of direction (T-Agility) test, sprint test, YO-YO (level-1) test will be applied in terms of performance test. In terms of skill testing, service test and spiking test protocols will be applied. Players will perform plyometric (PL) or jump rope (JR) training with the same amount of total training time in each training session. Rating of perceived exertion (RPE) will be obtained using (CR6-20). All players will also complete the short form of the physical activity enjoyment scale (PACES).

Detailed description: There will be 12 weeks of training during the preparation period. Each daily training will start with a 10-minute standard warm-up consisting of running, dynamic stretching and sprinting with volleyball-specific technical movements integrated. After warm-up and Small Sided Games (2v2, 3v3, 4v4, 5v5), players will perform plyometric (PL) or jump rope (JR) training with the same amount of total training time in each training session. At the start of the 12-week period, the vertical jump and 60 second countermovement jump (CMJ) using a portable force plate (Smart Jump; Fusion Sport, Queensland, Australia), T-Agility change of direction and Sprint tests with timing gates (Smart Speed; Fusion Equipment, Brisbane, Australia) and Yo-Yo Intermittent Recovery Test Level 1 will be used for VO2max levels. Serve and Spiking Technical Skill Tests will be applied together with these. To minimise the negative effects of fatigue on psychological, physiological and performance responses, each training intervention will be performed at least 2 days apart. Rating of perceived exertion (RPE) will be obtained using the category ratio scale (CR6-20) to calculate the internal training load (ITL) immediately after the completion of each session. The scale will be introduced at baseline to familiarise players. All players will also complete the short form of the physical activity enjoyment scale (PACES). The scale consists of 8 items scored on a 1-7 Likert scale and has been validated as an indicator of Turkish youth's level of enjoyment of activity.

Eligibility criteria: Inclusion Criteria:

* Being healthy
* Male volleyball athletes
* Willing to maintain the intervention for all sessions

Exclusion Criteria:

* Being under 18 years old
* Having a chronic disease
* Contraindications for exercise

Primary outcomes:
measure: Vertical Jump
timeFrame: From baseline assessment to 12 week follow-up assessment]
measure: 60s Countermovement Jump
timeFrame: From baseline assessment to 12 week follow-up assessment
measure: Change of Direction
timeFrame: From baseline assessment to 12 week follow-up assessment]
measure: Sprint
timeFrame: From baseline assessment to 12 week follow-up assessment
measure: Yo-Yo Intermittent Recovery Test Level 1
timeFrame: From baseline assessment to 12 week follow-up assessment
measure: Service
timeFrame: From baseline assessment to 12 week follow-up assessment
measure: Spiking
timeFrame: From baseline assessment to 12 week follow-up assessment
measure: Rating of Perceived Exertion (RPE)
timeFrame: From baseline assessment to 12 week follow-up assessment
measure: PAGES
timeFrame: From baseline assessment to 12 week follow-up assessment
Secondary outcomes:
Other outcomes:
measure: Anthropometric Measurements 1
timeFrame: Baseline
measure: Anthropometric Measurements 2
timeFrame: Baseline
measure: Anthropometric Measurements 3
timeFrame: Baseline
measure: Anthropometric Measurements 4
timeFrame: Baseline
Locations:
city: Karabük
country: Turkey
facility: Karabuk University
Study officials:
affiliation: Karabuk University
name: Neslihan Akçay, Doctorate
role: STUDY_CHAIR
References:
citation: Fathi A, Hammami R, Moran J, Borji R, Sahli S, Rebai H. Effect of a 16-Week Combined Strength and Plyometric Training Program Followed by a Detraining Period on Athletic Performance in Pubertal Volleyball Players. J Strength Cond Res. 2019 Aug;33(8):2117-2127. doi: 10.1519/JSC.0000000000002461.
citation: Ozer D, Duzgun I, Baltaci G, Karacan S, Colakoglu F. The effects of rope or weighted rope jump training on strength, coordination and proprioception in adolescent female volleyball players. J Sports Med Phys Fitness. 2011 Jun;51(2):211-9.
citation: Voelzke M, Stutzig N, Thorhauer HA, Granacher U. Promoting lower extremity strength in elite volleyball players: effects of two combined training methods. J Sci Med Sport. 2012 Sep;15(5):457-62. doi: 10.1016/j.jsams.2012.02.004. Epub 2012 Apr 6.