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Change-of-Direction Repeated Sprints in Adolescent Female Basketball Players

NCT07727850 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 20

Last updated 2026-07-30

No results posted yet for this study

Summary

The purpose of this randomized crossover study was to compare the acute effects of repeated-sprint protocols incorporating different numbers of 180-degree changes of direction in adolescent female basketball players. Twenty participants completed three exercise conditions in a randomized, counterbalanced order: 10 × 15-m linear sprints, 10 × 15-m sprints incorporating one 180-degree change of direction, and 10 × 15-m sprints incorporating two 180-degree changes of direction. Each sprint was followed by 30 seconds of passive recovery. Sprint performance, perceived exertion, heart rate, peripheral oxygen saturation, and systolic and diastolic blood pressure were assessed. The study examined whether increasing the number of changes of direction affected repeated-sprint performance and acute perceptual and cardiovascular responses.

Conditions

  • Athletic Performance

Interventions

BEHAVIORAL

Linear Repeated-Sprint Protocol

Following a standardized 20-minute dynamic warm-up, participants performed 10 maximal 15-m linear sprints without a change of direction. Each sprint began from a standing position 0.5 m behind the starting line and was recorded using electronic timing gates. A 30-second passive recovery period was provided between repetitions, during which participants remained standing.

BEHAVIORAL

One-COD Repeated-Sprint Protocol

Following a standardized 20-minute dynamic warm-up, participants performed 10 maximal 15-m repeated sprints. Each repetition consisted of 7.5 m of forward sprinting followed by one 180-degree change of direction and a 7.5-m return sprint. Each sprint began from a standing position 0.5 m behind the starting line and was recorded using electronic timing gates. A 30-second passive recovery period was provided between repetitions, during which participants remained standing.

BEHAVIORAL

Two-COD Repeated-Sprint Protocol

Following a standardized 20-minute dynamic warm-up, participants performed 10 maximal 15-m repeated sprints. Each repetition consisted of three consecutive 5-m sections and incorporated two 180-degree changes of direction. Each sprint began from a standing position 0.5 m behind the starting line and was recorded using electronic timing gates. A 30-second passive recovery period was provided between repetitions, during which participants remained standing.

Sponsors & Collaborators

  • Pamukkale University

    lead OTHER

Principal Investigators

  • Engin Güneş Atabaş, PhD · Pamukkale Üniversitesi

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
NONE
Model
CROSSOVER

Eligibility

Min Age
16 Years
Max Age
18 Years
Sex
FEMALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2026-05-02
Primary Completion
2026-05-21
Completion
2026-05-21

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07727850 on ClinicalTrials.gov