NCT07484425

Brief Summary

This randomized controlled trial aims to determine the effects of different drop height plyometric training protocols on lower limb explosive strength, anaerobic power, and change of direction (COD) performance in soccer players. A total of 56 competitive soccer players aged 18-30 years will be randomly allocated into three intervention groups using sealed envelope randomization: low drop height (30 cm), moderate drop height (45 cm), and high drop height (60 cm) plyometric training groups. Participants will undergo supervised plyometric training three times per week for six weeks. Outcome measures including Vertical Jump Test, Running-Based Anaerobic Sprint Test (RAST), and T-Test Agility Test will be assessed at baseline and post-intervention. Statistical analysis will be performed using SPSS version 25 to determine within-group and between-group differences.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
56

participants targeted

Target at P25-P50 for not_applicable

Timeline
3mo left

Started Dec 2025

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress63%
Dec 2025Sep 2026

Study Start

First participant enrolled

December 1, 2025

Completed
4 months until next milestone

First Submitted

Initial submission to the registry

March 16, 2026

Completed
4 days until next milestone

First Posted

Study publicly available on registry

March 20, 2026

Completed
4 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 1, 2026

Expected
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2026

Last Updated

March 20, 2026

Status Verified

March 1, 2026

Enrollment Period

8 months

First QC Date

March 16, 2026

Last Update Submit

March 16, 2026

Conditions

Athletic PerformanceMuscle Strength

Keywords

Plyometric TrainingDrop Jump TrainingExplosive StrengthAnaerobic PowerAgility PerformanceSoccer PlayersVertical Jump

Outcome Measures

Primary Outcomes (3)

  • Lower Limb Explosive Strength

    Explosive strength will be measured using the Vertical Jump Test. Jump height will be recorded and peak power will be calculated using the Sayers Equation.

    Baseline; 7-Week Post-Intervention

  • Anaerobic Power

    Anaerobic power will be assessed using the Running-Based Anaerobic Sprint Test (RAST). Peak power, average power and fatigue index will be calculated.

    Baseline: 7-Week Post-Intervention

  • Change of Direction Performance

    Change of direction ability will be assessed using the T-Test Agility Test and recorded in seconds.

    Baseline ; 7-Week Post Intervention

Study Arms (3)

Low Drop Height Plyometric Training (30 cm)

EXPERIMENTAL

Participants will perform supervised plyometric exercises including drop jumps, bounding drills, and box jumps using a 30 cm platform. Training will be conducted three sessions per week for six weeks with 3-4 sets per session under supervision.

Other: Experimental Group 2

Moderate Drop Height Plyometric Training (45 cm)

EXPERIMENTAL

Participants will perform supervised plyometric exercises including drop jumps, bounding drills, and box jumps using a 45 cm platform. Training will be conducted three sessions per week for six weeks with 3-4 sets per session under supervision.

Other: Experimental Group 3

High Drop Height Plyometric Training (60 cm)

EXPERIMENTAL

Participants will perform supervised plyometric exercises including drop jumps, bounding drills, and box jumps using a 60 cm platform. Training will be conducted three sessions per week for six weeks with 3-4 sets per session under supervision.

Other: Experimental Group 1

Interventions

Experimental Group 1OTHER

Participants will perform supervised plyometric exercises including drop jumps, bounding drills, and box jumps using a 30 cm platform

High Drop Height Plyometric Training (60 cm)
Experimental Group 2OTHER

Participants will perform supervised plyometric exercises including drop jumps, bounding drills, and box jumps using a 45 cm platform

Low Drop Height Plyometric Training (30 cm)
Experimental Group 3OTHER

Participants will perform supervised plyometric exercises including drop jumps, bounding drills, and box jumps using a 60 cm platform

Moderate Drop Height Plyometric Training (45 cm)

Eligibility Criteria

Age18 Years - 30 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Male and female soccer players
  • Age between 18-30 years
  • Minimum 1 year of regular soccer training
  • Healthy BMI
  • Currently active in competitive soccer (\>3 days/week)

You may not qualify if:

  • Musculoskeletal or neurological disorders
  • Lower limb injury within past 6 months
  • Participation in structured plyometric training in last 3 months
  • Contraindications to high-impact training

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Punjab Sports Board

Lahore, Punjab Province, 547000, Pakistan

RECRUITING

Related Publications (6)

  • Bai Y, Zheng Z, Gong B, Shen Y. Effects of different drop height training on lower limb explosive, anaerobic power, and change of direction performance in Chinese elite female wrestler. Heliyon. 2024 Sep 24;10(19):e38146. doi: 10.1016/j.heliyon.2024.e38146. eCollection 2024 Oct 15.

    PMID: 39398032BACKGROUND

  • Yang G, Chen W, Qi D, Zhang J, Men Z. The Effects of a 6-Week Plyometric and Sprint Interval Training Intervention on Soccer Player's Physical Performance. J Sports Sci Med. 2024 Sep 1;23(1):526-536. doi: 10.52082/jssm.2024.526. eCollection 2024 Sep.

    PMID: 39228777BACKGROUND

  • Ahmadabadi S, Rjabi H, Gharakhanlou R, Talebian S, Basereh A. Effects of a 4-week plyometric training on activity patterns during different phases of one-leg drop jump with focus on jump height. Sci Rep. 2023 Jun 6;13(1):9192. doi: 10.1038/s41598-023-36461-1.

    PMID: 37280245BACKGROUND

  • Sun J, Sun J, Shaharudin S, Zhang Q. Effects of plyometrics training on lower limb strength, power, agility, and body composition in athletically trained adults: systematic review and meta-analysis. Sci Rep. 2025 Oct 1;15(1):34146. doi: 10.1038/s41598-025-10652-4.

    PMID: 41034241BACKGROUND

  • Soyler M, Zileli R, Cingoz YE, Kilincarslan G, Kayantas I, Altug T, Asan S, Sahin M, Gurkan AC. The effect of high-intensity plyometric training on anaerobic performance parameters: a pilot study in U17 elite A league. PeerJ. 2024 Jan 10;12:e16648. doi: 10.7717/peerj.16648. eCollection 2024.

    PMID: 38223755BACKGROUND

  • Shuai C, Xiangyu W, Zihao L, Xinqi J, Li G. Effects of Plyometric Training on Lower-Limb Explosive Power and Its Retention After Detraining in Sprinters. Am J Mens Health. 2025 Jul-Aug;19(4):15579883251363089. doi: 10.1177/15579883251363089. Epub 2025 Aug 13.

    PMID: 40801377BACKGROUND

Study Officials

  • Danish Hassan, PhD

    Riphah International University

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Danish Hassan, Phd

CONTACT

+92 345 7946009danish.hassan009@gmail.com

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, CARE PROVIDER, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

March 16, 2026

First Posted

March 20, 2026

Study Start

December 1, 2025

Primary Completion (Estimated)

August 1, 2026

Study Completion (Estimated)

September 1, 2026

Last Updated

March 20, 2026

Record last verified: 2026-03

Data Sharing

IPD Sharing
Will not share

Locations

PA(1)