NCT07622511

Brief Summary

This study aimed to compare the effects of sprint interval training (SIT) and small-sided games (SSG) on cardiopulmonary threshold responses in football players. Participants were randomly assigned to SIT, SSG, or control groups and completed an 8-week training intervention. Cardiopulmonary exercise tests were performed before and after the intervention to evaluate aerobic and anaerobic threshold-related parameters.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
24

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started May 2024

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

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

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 1, 2024

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 1, 2024

Completed
14 days until next milestone

Study Completion

Last participant's last visit for all outcomes

August 15, 2024

Completed
1.7 years until next milestone

First Submitted

Initial submission to the registry

May 13, 2026

Completed
21 days until next milestone

First Posted

Study publicly available on registry

June 3, 2026

Completed
Last Updated

June 3, 2026

Status Verified

June 1, 2026

Enrollment Period

3 months

First QC Date

May 13, 2026

Last Update Submit

June 2, 2026

Conditions

Keywords

Vo'2maxSprint Interval TrainingAerobic ThresholdAnaerobic ThresholdCardiopulmonary Exercise TestingFootball PlayersSmall-Sided Games

Outcome Measures

Primary Outcomes (2)

  • Oxygen Uptake at Anaerobic Threshold (VO₂)

    Assessment of oxygen uptake (VO₂, mL·kg-¹·min-¹) measured at the anaerobic threshold during cardiopulmonary exercise testing.

    Baseline and Week 8

  • Oxygen Uptake at Respiratory Compensation Point (VO₂)

    Assessment of oxygen uptake (VO₂, mL·kg-¹·min-¹) measured at the respiratory compensation point during cardiopulmonary exercise testing.

    Baseline and Week 8

Secondary Outcomes (1)

  • Maximal Oxygen Uptake (VO₂max)

    Baseline and Week 8

Study Arms (3)

Sprint Interval Training Group

EXPERIMENTAL

Participants performed sprint interval training sessions in addition to regular football training during the intervention period.

Behavioral: Sprint Interval Training

Small-Sided Games Group

EXPERIMENTAL

Participants performed small-sided game training sessions in addition to regular football training during the intervention period.

Behavioral: Small-Sided Games

Control Group

EXPERIMENTAL

Participants continued their regular football training without additional intervention during the study period.

Other: Control

Interventions

Small-sided game training sessions performed during the 8-week intervention period.

Also known as: SSG
Small-Sided Games Group
ControlOTHER

Participants continued regular football training without additional intervention.

Control Group

Participants continued regular football training without additional intervention.

Also known as: SIT
Sprint Interval Training Group

Eligibility Criteria

Age16 Years - 17 Years
Sexmale
Healthy VolunteersYes
Age GroupsChild (0-17)

You may qualify if:

  • Male football players aged 16-17 years
  • Regular participation in football training
  • Free from injury or illness during the study period
  • Voluntary participation with informed consent

You may not qualify if:

  • Current musculoskeletal injury
  • Cardiovascular or respiratory disease
  • Failure to complete the intervention program
  • Use of medications affecting exercise performance

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Istanbul Gelisim University Faculty of Sport Sciences

Istanbul, Istanbul, Turkey (Türkiye)

Location

MeSH Terms

Interventions

High-Intensity Interval Training

Intervention Hierarchy (Ancestors)

Physical Conditioning, HumanExerciseMotor ActivityMovementMusculoskeletal Physiological PhenomenaMusculoskeletal and Neural Physiological Phenomena

Study Officials

  • Onur YİLDİRİM, PhD

    Istanbul Gelisim Universty Faculty of Sport Sciences,ty

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
BASIC SCIENCE
Intervention Model
PARALLEL
Model Details: Participants were randomly assigned to sprint interval training, small-sided games, or control groups and followed in parallel throughout the intervention period.
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 13, 2026

First Posted

June 3, 2026

Study Start

May 1, 2024

Primary Completion

August 1, 2024

Study Completion

August 15, 2024

Last Updated

June 3, 2026

Record last verified: 2026-06

Locations