Athletic Performance, Physical Conditioning, Human, Plyometric Exercises
Conditions
Brief summary
This randomized controlled trial investigated the effects of elastic band-resisted plyometric training (EBPT) on jump performance in young male soccer players. Thirty-three youth soccer players aged 14-15 years were randomly assigned to one of three groups: elastic band-resisted plyometric training (EBPT, n=10), traditional plyometric training (PLT, n=11), or control (CON, n=12). Both training groups completed a 6-week intervention consisting of 2 sessions per week with 120-230 foot contacts per session. The primary outcome was countermovement jump without arm swing (CMJ-NS) height. Secondary outcomes included squat jump (SJ), countermovement jump with arm swing (CMJ-AS), single-leg vertical jumps for dominant (SVJ-D) and non-dominant (SVJ-ND) legs, take-off velocity, and peak power. Assessments were conducted at baseline and post-intervention. The study aimed to determine whether adding elastic band resistance to plyometric exercises provides superior training adaptations compared to traditional plyometric training for enhancing lower-limb explosive power in young athletes.
Interventions
BEHAVIORALElastic Band-Resisted Plyometric Training
Participants performed plyometric exercises (squat jumps, countermovement jumps, drop jumps, and single-leg jumps) with elastic band resistance providing additional load during the concentric phase. Training was conducted twice weekly for 6 weeks, with 120-230 foot contacts per session.
BEHAVIORALTraditional Plyometric Training
Participants performed the same plyometric exercises (squat jumps, countermovement jumps, drop jumps, and single-leg jumps) without elastic band resistance. Training was conducted twice weekly for 6 weeks, with 120-230 foot contacts per session.
OTHERRegular Soccer Training (No Intervention)
Participants continued their routine soccer training program without any additional plyometric exercises during the 6-week study period.
Sponsors
Serkan özgür
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
NONE
Intervention model description
Participants were randomly assigned to one of three parallel groups: elastic band-resisted plyometric training (EBPT, n=10), traditional plyometric training (PLT, n=11), or control (CON, n=12). All participants remained in their assigned groups throughout the 6-week intervention period. Both intervention groups received plyometric training twice weekly, while the control group continued regular soccer training only.
Eligibility
Sex/Gender
MALE
Age
14 Years to 15 Years
Healthy volunteers
Yes
Inclusion criteria
* Male soccer players aged 14-15 years * Member of a registered soccer academy * Minimum 2 years of soccer training experience * Regular participation in team training (at least 3 sessions per week) * No participation in systematic plyometric training in the previous 6 months * Written informed consent from parent/guardian
Exclusion criteria
* Current musculoskeletal injury or pain * History of lower extremity surgery in the past 12 months * Any cardiovascular or respiratory condition that contraindicates high-intensity exercise * Participation in other training intervention studies * Inability to attend at least 80% of training sessions
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Countermovement Jump Without Arm Swing (CMJ-NS) Height | Baseline and 6 weeks (post-intervention) | Vertical jump height measured during countermovement jump without arm swing, assessed using a portable force platform. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Squat Jump (SJ) Height | Baseline and 6 weeks | Vertical jump height measured during squat jump using a portable force platform. |
| Countermovement Jump With Arm Swing (CMJ-AS) Height | Baseline and 6 weeks | Vertical jump height measured during countermovement jump with arm swing using a portable force platform. |
| Single-Leg Vertical Jump - Dominant Leg (SVJ-D) Height | Baseline and 6 weeks | Vertical jump height measured during single-leg jump from the dominant leg using a portable force platform. |
| Single-Leg Vertical Jump - Non-Dominant Leg (SVJ-ND) Height | Baseline and 6 weeks | Vertical jump height measured during single-leg jump from the non-dominant leg using a portable force platform. |
Countries
Turkey (Türkiye)
Outcome results
None listed