The Effects of an 8-Week Exer-Genie-Assisted Speed and ABC Drill Training Program on Speed, Hamstring Strength, and Vertical Jump Performance in Female Football Players

This study aims to examine the effects of an eight-week Exer-Genie®-assisted speed and agility-balance-coordination (ABC drill) training program on sprint performance, hamstring muscle strength, and vertical jump ability in young female football players. A total of 37 licensed female football players competing in the Turkish Women's Second League participated in the study. Participants were randomly assigned to an experimental group (n = 20) or a control group (n = 17). The study evaluates whether this integrated training approach enhances acceleration, force production, and neuromuscular control compared to regular team training alone.

Study Overview

• Status: Completed
• Conditions: Athletic Performance; Muscle Strength; Hamstring Muscles
• Intervention / Treatment: Other: Exer-Genie® Training Protocol

Detailed Description

Study Design and Participants The study involves 37 female football players from the Pendik Güven Women's Football Team (mean age 14.4 ± 1.4 years), licensed by the Turkish Football Federation. Participants were randomly assigned to an experimental group (n = 20) or a control group (n = 17).

Intervention Protocol The experimental group completed an Exer-Genie®-assisted sprint and ABC drill training program twice per week for eight weeks (total of 16 sessions). Each session was performed after a standardized warm-up and consisted of six 30-m sprint runs and technical drills. The sprints were performed with resistance applied using the 60-m Exer-Genie® device, with resistance intensity set at 10% of each athlete's body weight. The control group continued with their regular team training only.Outcome Measures 1. Sprint Performance: Assessed via 0-10 m, 10-30 m, and 30 m sprint times using the SmartSpeed electronic timing gate system. 2. Hamstring Strength: Assessed using the NordBord Hamstring Testing System. Specifically, the ISO Prone (0°) protocol was used to measure isometric hamstring strength and impulse values. 3. Vertical Jump: Assessed via the Countermovement Jump (CMJ) test using the ForceDecks system to evaluate lower-limb explosive performance.Statistical Analysis Data were analyzed using repeated-measures ANOVA to evaluate time, group, and interaction effects, with a significance level set at p < 0.05.

• Study Type: Interventional
• Enrollment (Actual): 37
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Turkey (Türkiye)
  • Istanbul, Turkey (Türkiye)
    • Istanbul Gedik University, Faculty of Sport Sciences, Indoor Sports Hall

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

Female gender.

Licensed football players competing in the Turkish Women's Second League.

Regularly engaged in football training for at least two years.

Aged between 11 and 17 years.

Exclusion Criteria:

History of recent musculoskeletal injury.

Any chronic health condition that could affect athletic performance.

Irregular attendance to the training sessions during the study period.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Experimental Group; Participants in this group performed an Exer-Genie®-assisted sprint and agility-balance-coordination (ABC drill) training program twice per week for eight weeks in addition to their warm-up routine.	Other: Exer-Genie® Training Protocol; The protocol consisted of six 30-m sprint runs performed with resistance applied using the 60-m Exer-Genie® device. Resistance was set at 10% of the athlete's body weight. The training was conducted twice a week for 8 weeks.
No Intervention: Control Group; Participants in this group continued with their regular team football training only and did not receive the Exer-Genie® resistance training.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Sprint Performance (30m Sprint Test)	Sprint performance was evaluated using the SmartSpeed electronic timing gate system. Time was recorded in seconds for 0-10 m (acceleration), 10-30 m (transition), and full 30 m distances. Lower time indicates better performance.	Baseline (Pre-test) and immediately after the 8-week intervention (Post-test)
Hamstring Muscle Strength (NordBord ISO Prone)	Isometric hamstring strength and impulse (force-time curve area) were assessed using the NordBord Hamstring Testing System with the ISO Prone protocol (0 degrees knee extension). Measured in Newtons (N) and N.s.	Baseline (Pre-test) and immediately after the 8-week intervention (Post-test)
Vertical Jump Height (Countermovement Jump)	Lower-limb explosive power was assessed via the Countermovement Jump (CMJ) test using ForceDecks force platforms. Jump height was recorded in centimeters (cm).	Baseline (Pre-test) and immediately after the 8-week intervention (Post-test)

Collaborators and Investigators

• Sponsor: Istanbul Rumeli University

Study record dates

Study Major Dates

• Study Start (Actual): April 10, 2025
• Primary Completion (Actual): June 10, 2025
• Study Completion (Actual): November 1, 2025

Study Registration Dates

• First Submitted: November 28, 2025
• First Submitted That Met QC Criteria: November 28, 2025
• First Posted (Actual): December 10, 2025

Study Record Updates

• Last Update Posted (Actual): December 10, 2025
• Last Update Submitted That Met QC Criteria: November 28, 2025
• Last Verified: November 1, 2025

More Information

Terms related to this study

• Keywords: Resistance Training; Football; Athletic Performance
• Other Study ID Numbers: EXERGENIE-FOOTBALL-2025

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: "The datasets generated and analyzed during the current study are available from the corresponding author on reasonable request."
• IPD Sharing Time Frame: Data will be available beginning immediately after publication of the study results.
• IPD Sharing Access Criteria: Data will be shared with researchers who provide a methodologically sound proposal. Requests should be directed to the corresponding author (Yusufcan Keskin) via email.
• IPD Sharing Supporting Information Type: STUDY_PROTOCOL; SAP

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No