Impact of Hip Strength Training on Jump and Throw Performance in Young Female Handball Players

NCT06946459 | Completed Results

• 1 other identifier: IstanbulU-SportsMed-ZHT-01
• Study Type: interventional
• Target: 40
• Locations: 1 country
• Sites: 1

Brief Summary

This study aims to investigate the effects of an 8-week Hip Strength Exercise Training program, implemented in addition to the athletes' regular training routines, on hip muscle strength, jump distance, and three-step jump shot performance in female handball players aged 15 to 19. Furthermore, the study seeks to explore the potential relationships between throwing performance and various physical parameters, including anthropometric measurements, handgrip strength, and body fat percentage.

Conditions

Strength Training Effects

Keywords

Handball players; Strength training effects; Throwing performance; Jumping performance

Outcome Measures

Primary Outcomes (3)

• Throwing Velocity

  Throwing velocity was measured using the Doppler radar gun (Bushnell Speedster III). Participants performed jump shots from behind the 9-meter line using the three-step technique. The average ball speed (km/h) from five valid throws to each corner of the goal was recorded. The radar gun was placed 4 meters behind the free throw line and aligned with the release height and target corner to ensure measurement accuracy.

  Baseline, Week 8

• Throwing Accuracy

  Throwing accuracy was evaluated by targeting 50 cm circular zones placed in the four corners of a standard goal. Five throws per corner were completed (a total of 20 throws). The reported values in the data table represent the mean number of successful throws per target zone, calculated by dividing the total successful throws by the number of zones. The possible score for this reported mean ranges from 0 to 5. Higher scores indicate better throwing accuracy per corner.

  Baseline, Week 8

• Isokinetic Hip Strength Parameters

  Hip concentric strength evaluated using an isokinetic dynamometer (Cybex Humac Norm) at a speed of 180°/s. The test involves 4 maximum concentric contractions following 5 practice trials. The reported values represent the peak torque normalized to body weight (%BW). Multiple sub-measurements for different muscle groups and time points (Baseline and Week 8) are presented as separate rows within the single data table for comprehensive evaluation.

  Baseline and Week 8

Secondary Outcomes (6)

• Anthropometric Measurements

  Baseline (15-18 February 2025)

• Body Fat Percentage

  Baseline (15 -18 February 2025)

• Hand Grip Strength

  Baseline (15 -18 February 2025)

• Countermovement Jump Distance

  Baseline (15-18 February 2025) and after 8-week intervention (15-18 April 2025)

• Single Leg Vertical Jump (SLVJ) Distance

  Baseline (15-18 February 2025) and after 8-week intervention (15-18 April 2025)

Study Arms (2)

Hip Strength Exercise Training Group

EXPERIMENTAL

This group received a hip strength exercise training program in addition to their regular handball training for 8 weeks, three sessions per week. The intervention aimed to improve hip muscle strength, jump distance, and throwing performance.

Other: Exercise

Control Group

NO INTERVENTION

This group continued their regular handball training without any additional intervention during the 8-week study period. They served as the control group to compare the effects of the hip strength exercise training.

Interventions

Exercise OTHER

Participants in the Hip Strength Exercise Training group performed structured hip strengthening exercises using resistance bands in addition to their regular handball and strength training programs. The training was implemented three times per week for 8 weeks, with one rest day between sessions, and was conducted before regular handball practices. The exercises focused on activating and strengthening the hip muscles through simple, well-structured movements. Resistance bands were chosen due to their portability, cost-effectiveness, and suitability for adolescent athletes. This method ensured a safe training environment, reduced the risk of overload, and allowed for proper execution and control of the exercises.

Hip Strength Exercise Training Group

Eligibility Criteria

• Age: 15 Years - 19 Years
• Gender Eligibility Details: The study includes female handball players .
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64)

You may qualify if:

• Signing the Informed Voluntary Consent Form by agreeing to voluntarily participate in the study
• Being a handball player aged between 15-19 years
• Being female
• Having reached menarche
• Having the ability to understand and speak

You may not qualify if:

• Having sustained an extremity injury in the last 6 months
• Having a body mass index (BMI) greater than 25 kg/m² (obesity)
• Having a cardiovascular, neurological, or pulmonary disease
• Experiencing hip pain related to loading and fatigue, or hip pain due to muscle and spasms
• Presence of bursitis, synovitis, arthritis, or osteomyelitis in the hip

Sponsors & Collaborators

• Istanbul University: lead

Study Sites (1)

Department of Sports Medicine Istanbul Unıversıty

Istanbul, Fatih, 34104, Turkey (Türkiye)

Location

MeSH Terms

Interventions

Exercise

Intervention Hierarchy (Ancestors)

Motor Activity; Movement; Musculoskeletal Physiological Phenomena; Musculoskeletal and Neural Physiological Phenomena

Limitations and Caveats

This study included a limited sample of female athletes, and results may not generalize to males or other age groups. The long-term effects of hip strength exercises were not assessed. Future research should examine individualized, multi-component training programs, consider external factors such as motivation and recovery, and use objective performance measures to better understand training impacts.

Results Point of Contact

• Title: Zümre Hediye TAŞÇI
• Organization: Istanbul Unıversty

zumretasci18@gmail.com

0551 171 63 37

Study Officials

• Zümre H Taşçı, MSc student

  Istanbul University

  PRINCIPAL INVESTIGATOR

• Sertaç Yakal, Dr.

  Istanbul University

  PRINCIPAL INVESTIGATOR

Publication Agreements

• PI is Sponsor Employee: Yes

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: OUTCOMES ASSESSOR
• Masking Details: In this study, the participants were not blinded to their group assignment, as it was evident which group they belonged to (Hip Strength Exercise Training Group or Control Group) based on the intervention. However, the outcomes assessors were blinded to group allocation to reduce potential bias in the measurement of the outcomes. This masking ensured that the evaluation of the effects of the intervention remained unbiased.
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Principal Investigator

Model Details: In our study, the athletes were randomly assigned to two groups: the Hip Strength Exercise Training Group and the Control Group. The Hip Strength Exercise Training Group consists of handball players who were planned to receive hip strength exercise training three times a week for 8 weeks following the initial assessments. The Control Group, on the other hand, represents handball players who were instructed to continue with their regular handball training for 8 weeks after the initial assessments.

Study Record Dates

• First Submitted: April 19, 2025
• First Posted: April 27, 2025
• Study Start: February 15, 2025
• Primary Completion: April 18, 2025
• Study Completion: April 18, 2025
• Last Updated: June 30, 2026
• Results First Posted: June 30, 2026

Record last verified: 2026-06

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)