Effects of Combined Training Protocol in Volleyball Players

NCT ID: NCT06875570

Last Updated: 2025-03-19

Basic Information

• Recruitment Status: ACTIVE_NOT_RECRUITING
• Clinical Phase: NA
• Total Enrollment: 30 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2025-03-08
• Study Completion Date: 2025-05-29

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.

Conditions

Volleyball; Performance; Training; Technical Skills

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: TRIPLE

Study Groups

Pliometric Training

Players will receive a Plyometric training program at the beginning of the Volleyball training session for a period of 15 minutes, two days a week.

Group Type: EXPERIMENTAL

Pliometric Training

Intervention Type: OTHER

The full intervention program will cover 12 weeks in the season. Prior to training, players will be instructed to warm-up for ten minutes with general running exercises and dynamic stretching. The plyometric training intervention will consist of 5 exercises performed in the following order: Leap forward and backward on the line, leap sideways on the line, double leg knee to chest, split squat jump, and squat jump (Bavli, 2012). A volleyball coach will monitor the whole training.

Jump Rope training

Players will receive a jump rope training program at the beginning of the volleyball training session for 15 minutes, two days a week.

Group Type: EXPERIMENTAL

Jump Rope Training

Intervention Type: OTHER

The entire intervention program will last for 12 weeks during the season. Before training, players will be instructed to warm up with general running exercises and dynamic stretching for ten minutes. The jump rope intervention will consist of 5 exercises performed in the following order: basic jump step, double leg double jump, double leg jump left and right, double leg jump forward and backward, and scissor steps (Trecroci et al., 2015). Each exercise will be performed by all participants using a jump rope with the same characteristics in terms of weight (e.g. 230g), length (e.g. shoulder size) and material (e.g. PVC, Polyvinyl Chloride). A metronome speed of 120 beats per minute will be used to ensure equal exercise intensity in both exercise programs Furthermore, a volleyball coach will monitor the entire workout.

Small Sided Games

More complex, skill-based conditioning exercises for volleyball are small-sided games (2v2, 3v3) and competition drills (6v6).

Group Type: EXPERIMENTAL

Small Sided Games

Intervention Type: OTHER

More complex, skill-based conditioning exercises for volleyball are small-sided games (2v2, 3v3) and competition drills (6v6). Although the duration of each rally in these drills is not controlled by the coach, the total duration of the drill will be recorded to aid in-session and inter-session planning. Total repetitions will be easily measured by adding up the total points played in the rally and then multiplying by the number of rallies per point. The coach will create an emotionally intense environment by applying a scoring system (e.g. team winning 2 out of 3 rallies gets 1 big point, 5 seconds rest) and encouraging the players (Trajkovic et al., 2012).

Interventions

Pliometric Training

The full intervention program will cover 12 weeks in the season. Prior to training, players will be instructed to warm-up for ten minutes with general running exercises and dynamic stretching. The plyometric training intervention will consist of 5 exercises performed in the following order: Leap forward and backward on the line, leap sideways on the line, double leg knee to chest, split squat jump, and squat jump (Bavli, 2012). A volleyball coach will monitor the whole training.

Intervention Type: OTHER

Jump Rope Training

The entire intervention program will last for 12 weeks during the season. Before training, players will be instructed to warm up with general running exercises and dynamic stretching for ten minutes. The jump rope intervention will consist of 5 exercises performed in the following order: basic jump step, double leg double jump, double leg jump left and right, double leg jump forward and backward, and scissor steps (Trecroci et al., 2015). Each exercise will be performed by all participants using a jump rope with the same characteristics in terms of weight (e.g. 230g), length (e.g. shoulder size) and material (e.g. PVC, Polyvinyl Chloride). A metronome speed of 120 beats per minute will be used to ensure equal exercise intensity in both exercise programs Furthermore, a volleyball coach will monitor the entire workout.

Intervention Type: OTHER

Small Sided Games

More complex, skill-based conditioning exercises for volleyball are small-sided games (2v2, 3v3) and competition drills (6v6). Although the duration of each rally in these drills is not controlled by the coach, the total duration of the drill will be recorded to aid in-session and inter-session planning. Total repetitions will be easily measured by adding up the total points played in the rally and then multiplying by the number of rallies per point. The coach will create an emotionally intense environment by applying a scoring system (e.g. team winning 2 out of 3 rallies gets 1 big point, 5 seconds rest) and encouraging the players (Trajkovic et al., 2012).

Intervention Type: OTHER

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

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 25 Years
• Eligible Sex: MALE
• Accepts Healthy Volunteers: Yes

Sponsors

Karabuk University

OTHER

Sponsor Role: lead

Responsible Party

Neslihan AKÇAY

Assoc. Prof. Dr.

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Neslihan Akçay, Doctorate

Role: STUDY_CHAIR

Karabuk University

Locations

Karabuk University

Karabük, Turkey, Turkey (Türkiye)

Countries

Turkey (Türkiye)

References

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.

Reference Type: BACKGROUND

PMID: 29401199 (View on PubMed)

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.

Reference Type: BACKGROUND

PMID: 21681154 (View on PubMed)

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.

Reference Type: BACKGROUND

PMID: 22484082 (View on PubMed)

Other Identifiers

UKarabuk-4

Identifier Type: -

Identifier Source: org_study_id