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ExerciseINTER-BASKETNCT07752459

Physiological Responses to Basketball-Specific Interval Exercise in Female Basketball Players

A study testing Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IR1) in people with Exercise and Fatigue, run by Poznan University of Physical Education at 1 site in Poland.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial summary

This study aims to evaluate the effects of interval exercise on metabolic and inflammatory responses, energy substrate utilization, and fatigue in trained female basketball players. Read more about this study

Who is it for?
Ages 16 to 22 years, women onlyHealthy volunteers can take part
Conditions the study is for
Exercise, Fatigue, Sport Physiology
What is being tested?
Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IR1)
Could I receive a placebo?
No, everyone receives an active treatment
How many people
25 participants
Where
1 sitePoland
Study dates
20 Sep 2026to 30 Dec 2026
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 16 to 22 years
  • Women only
  • Healthy volunteers accepted
  • Child, Adult

Who may be able to join

  • Female, aged 16-22 years.
  • Regular participation in organized basketball training.
  • Current medical clearance for sports participation.
  • No contraindications to high-intensity physical exercise.
  • Willingness and ability to provide written informed consent (and parental/legal guardian consent where required for minors).
  • Willingness to comply with all study procedures.
  • Menstrual cycle phase will be recorded for all participants and considered as a potential covariate in the statistical analyses.

Who cannot join

  • Current musculoskeletal injury or any condition preventing maximal exercise.
  • Metabolic, cardiovascular, inflammatory, or other chronic diseases affecting exercise capacity or study outcomes.
  • Current use of anti-inflammatory medications.
  • Use of supplements or substances that may influence the measured metabolic or inflammatory parameters.
  • Refusal to undergo blood sampling.
  • Failure to comply with pre-test instructions (e.g., dietary or exercise restrictions).

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Anna Kasperska, PhD contact

+48573337282

annakasperska.awf@gmail.com

Agnieszka Basta contact

anusia.nossu@gmail.com

Poland1 site
  • Poznań University of Physical Education, Faculty of Sport Sciences in Gorzów Wielkopolski, Poland; Department of Biological Sciences.

    Gorzów Wielkopolski, 66-400

    Anna Kasperska, PhD, +48573337282, annakasperska.awf@gmail.com

Other trials in Poland

About this study

Official title: The Effect of Basketball-Specific Interval Exercise on Metabolic and Inflammatory Responses, Energy Substrate Utilization, and Perceived Fatigue in Female Basketball Players

This study aims to evaluate the effects of interval exercise on metabolic and inflammatory responses, energy substrate utilization, and fatigue in trained female basketball players. High-intensity intermittent exercise is a key component of basketball performance and induces substantial metabolic and physiological stress. However, the acute relationships between exercise-induced metabolic changes, inflammatory responses, substrate utilization, and fatigue in female basketball players remain insufficiently understood.

In this prospective interventional study, eligible female basketball players will complete a standardized interval exercise protocol designed to replicate the physiological demands of competitive basketball. Physiological, biochemical, and perceptual measurements will be collected before exercise, immediately after exercise, and during recovery. Primary outcomes include changes in metabolic and inflammatory biomarkers, energy substrate utilization, and fatigue-related responses. Secondary outcomes include selected physiological and performance-related variables associated with recovery from high-intensity interval exercise.

The findings of this study will improve the understanding of the physiological responses to interval exercise in female basketball players and may contribute to the development of evidence-based training and recovery strategies aimed at optimizing performance and athlete health.

Read the detailed description

High-intensity intermittent exercise is a fundamental component of basketball and is characterized by repeated bouts of sprinting, jumping, rapid changes of direction, and brief recovery periods. This type of exercise places substantial demands on both aerobic and anaerobic energy systems and induces complex metabolic and inflammatory responses. Although numerous studies have investigated the physiological effects of high-intensity exercise, the interactions among exercise-induced inflammation, metabolic regulation, energy substrate utilization, and fatigue in female basketball players remain insufficiently understood.

The purpose of this study is to investigate the acute effects of basketball-specific interval exercise on metabolic and inflammatory responses, energy substrate utilization, and psychophysiological fatigue in trained female basketball players. The exercise stimulus will consist of the Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IR1), a validated field test that closely simulates the intermittent high-intensity demands of competitive basketball by requiring shuttle runs interspersed with short active recovery periods.

Participants will attend a single experimental session consisting of baseline assessments, completion of a standardized interval exercise protocol, and follow-up assessments during the early recovery period. Biological samples, physiological measurements, and fatigue assessments will be obtained at predefined time points before exercise, immediately after exercise, and one hour after exercise. Laboratory analyses will evaluate selected inflammatory and metabolic biomarkers together with indicators of energy substrate utilization. In addition, subjective fatigue and neuromotor performance will be assessed to characterize both peripheral and central aspects of exercise-induced fatigue.

To minimize potential confounding factors, participants will follow standardized pre-test instructions regarding physical activity, alcohol consumption, caffeine intake, and nutritional preparation before testing. Nutritional intake and anthropometric characteristics will also be documented to support the interpretation of physiological responses.

By integrating biochemical, metabolic, physiological, and psychophysiological measurements within a basketball-specific exercise model, this study aims to improve understanding of the mechanisms underlying acute responses to high-intensity intermittent exercise in female athletes. The findings may contribute to evidence-based strategies for monitoring training load, optimizing recovery, and improving performance in women's basketball and other intermittent team sports.

Being tested
Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IR1)
Keywords
basketball, Yo-Yo test, High-Intensity Interval Exercise, Reaction Time, Energy Metabolism, Free Fatty Acids, Exercise-Induced Fatigue, Female Athletes
Medical subject headings
Motor Activity, Fatigue

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IR1)Other

    The intervention consists of the Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IR1), a standardized maximal intermittent field exercise test designed to reproduce the physiological demands of intermittent team sports such as basketball. Participants perform repeated 20-meter shuttle runs at progressively increasing speeds, guided by audio signals, with 10-second active recovery periods between running bouts. The test continues until volitional exhaustion or until the participant is unable to maintain the required running pace according to the test protocol. The Yo-Yo IR1 is used to induce acute physiological stress for the assessment of metabolic, inflammatory, and fatigue-related responses.

Study groups in NCT07752459
Study groupRoleWhat they receive
High-Intensity Interval Exercise (Yo-Yo IR1)ExperimentalParticipants assigned to this arm will complete a single session of the Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IR1), a standardized high-intensity intermittent exercise protocol designed to simulate the physiological demands of competitive basketball. Assessments will be conducted before exercise, immediately after exercise, and one hour after exercise to evaluate acute metabolic, inflammatory, physiological, and fatigue-related responses.
Receives: Other: Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IR1)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change in Serum Interleukin-6 (IL-6) Concentration

    Serum interleukin-6 (IL-6) concentration will be measured to assess the acute inflammatory response induced by the Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IR1). The outcome will be expressed as the change in IL-6 concentration across the predefined assessment time points.

    Measured: Baseline (pre-exercise), immediately after exercise, and 1 hour after exercise.

  2. Change in Blood Lactate Concentration

    Blood lactate concentration measured from capillary blood as an indicator of anaerobic metabolism following high-intensity intermittent exercise.

    Measured: Baseline and immediately after exercise.

  3. Change in reaction time

    Visual reaction time will be assessed as an indicator of neuromotor performance and central fatigue.

    Measured: Baseline and immediately post-exercise.

Secondary outcomes (5)
  1. Change in serum-free fatty acid concentration

    Serum free fatty acid concentration will be measured from venous blood samples to evaluate exercise-induced lipid mobilization.

    Measured: Baseline, immediately post-exercise, and 1 hour post-exercise

  2. Change in blood glucose concentration

    Blood glucose concentration will be measured using a portable glucometer with disposable test strips.

    Measured: Baseline, immediately post-exercise, and 1 hour post-exercise

  3. Change in serum insulin concentration

    Serum insulin concentration will be measured to assess hormonal regulation of glucose metabolism.

    Measured: Baseline, immediately post-exercise, and 1 hour post-exercise

  4. Change in Rating of Perceived Exertion (Borg Scale)

    Subjective perception of exercise intensity will be assessed using the Borg Rating of Perceived Exertion Scale. Total scores range from 6 to 20, with higher scores indicating greater perceived exertion during exercise.

    Measured: Immediately after exercise completion (within 5 minutes).

  5. Change in mood state assessed by Profile of Mood States (POMS)

    Mood state will be assessed using the validated Profile of Mood States questionnaire. Total scores range from 0 to 260, with higher scores indicating greater mood disturbance and psychological distress.

    Measured: Before exercise.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted7 Aug 2026
  2. Study start20 Sep 2026 (estimated)
  3. Primary completion30 Nov 2026 (estimated)
  4. Study completion30 Dec 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Other
Allocation
Not applicable
Intervention model
Single group
Model description
All participants will undergo the same exercise intervention consisting of the Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IR1). Repeated assessments will be performed before exercise, immediately after exercise, and one hour after exercise. The protocol is used to induce acute physiological stress and to evaluate metabolic, inflammatory, and fatigue-related responses associated with high-intensity intermittent exercise.
Masking
None (open label)
Enrolment
25 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07752459
Sponsor's protocol ID
Basketball players
Other IDs
DGR.V.042.2.4.2026
Acronym
INTER-BASKET
Status last verified
Aug 2026
First submitted
3 Aug 2026
Last updated
12 Aug 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: Individual participant data collected during this study will not be made publicly available.

Publications

  • Ben Abdelkrim N, Nabli MA, Chamari K. Physical playing pattern and ecological validity of the YoYo-IR1 Test in U-19 female basketball. J Sports Med Phys Fitness. 2020 Apr;60(4):544-551. doi: 10.23736/S0022-4707.19.10368-4. Epub 2020 Jan 23.

    PubMed 31974338
  • Cao S, Li Z, Wang Z, Geok SK, Liu J. The Effects of High-Intensity Interval Training on Basketball Players: A Systematic Review and Meta-Analysis. J Sports Sci Med. 2025 Mar 1;24(1):31-51. doi: 10.52082/jssm.2025.31. eCollection 2025 Mar.

    PubMed 40046212
  • Scherr J, Wolfarth B, Christle JW, Pressler A, Wagenpfeil S, Halle M. Associations between Borg's rating of perceived exertion and physiological measures of exercise intensity. Eur J Appl Physiol. 2013 Jan;113(1):147-55. doi: 10.1007/s00421-012-2421-x. Epub 2012 May 22.

    PubMed 22615009
  • Jribi W, Bougrine H, Aloui A, Khalfoun J, Souissi N, Mkacher W, El Abed K, Ben Abderrahman A. Morning-evening differences of short-term maximal performance and psychological variables in female athletes. Front Physiol. 2024 May 30;15:1402147. doi: 10.3389/fphys.2024.1402147. eCollection 2024.

    PubMed 38872835
  • Bransford DR, Howley ET. Effects of training on plasma FFA during exercise in women. Eur J Appl Physiol Occup Physiol. 1979 Jul 2;41(3):151-8. doi: 10.1007/BF00430007. No abstract available.

    PubMed 488080
  • Matsuda T, Takahashi H, Nakamura M, Kanno M, Ogata H, Ishikawa A, Yamada M, Kamemoto K, Sakamaki-Sunaga M. Influence of menstrual cycle on muscle glycogen utilization during high-intensity intermittent exercise until exhaustion in healthy women. Appl Physiol Nutr Metab. 2022 Jun 1;47(6):671-680. doi: 10.1139/apnm-2021-0532. Epub 2022 Jul 20.

    PubMed 35856390
  • Friedlander AL, Casazza GA, Horning MA, Buddinger TF, Brooks GA. Effects of exercise intensity and training on lipid metabolism in young women. Am J Physiol. 1998 Nov;275(5):E853-63. doi: 10.1152/ajpendo.1998.275.5.E853.

    PubMed 9815006

Questions about this trial

What is this clinical trial studying?

A study testing Yo-Yo Intermittent Recovery Test Level 1 (Yo-Yo IR1) in people with Exercise and Fatigue, run by Poznan University of Physical Education at 1 site in Poland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 12 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Poland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Anna Kasperska, PhD (+48573337282, annakasperska.awf@gmail.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Change in Serum Interleukin-6 (IL-6) Concentration (time frame: Baseline (pre-exercise), immediately after exercise, and 1 hour after exercise.). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT07752459, which also lists 7 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Aug 2026.

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