HealthyHRV-SWIMMINGNCT07641062
EFFECTS OF FOAM ROLLING ON HRV IN ELITE SWIMMERS
A study testing Swimming+FoamRollingRecovery and SwimmingRecovery in people with Healthy and Swimming, run by Uludag University at 1 site in Turkey (Türkiye).
Trial summary
The present study aimed to evaluate the effects of foam rolling (FR) on recovery by examining selected time-domain and frequency-domain heart rate variability (HRV) parameters in elite swimmers following intensive interval sprint training. Read more about this study
- Who is it for?
- Ages 15 to 18 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy, Swimming, Autonomic Nervous System Function
- What is being tested?
- Swimming+FoamRollingRecovery and SwimmingRecovery
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 15 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 1 Sep 2024to 1 Mar 2025
- Phase
- Interventional
- Are there results?
- None posted in the registry
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 15 to 18 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- membership in the National Olympic Preparation Centre (TOHM), (2) ≥5 years of competitive swimming experience, and (3) participation in ≥3 international competitions within the past year
Who cannot join
- cardiovascular, respiratory, or musculoskeletal conditions within the past six months,
- use of medications or stimulants affecting performance within the past three months
- unsuitability for physical activity according to EGZ-A+ assessment
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Bursa Uludag University, Faculty of Sport Sciences
Bursa, 16059
About this study
Official title: HEART RATE VARIABILITY IN ELITE SWIMMERS AFTER INTENSIVE INTERVAL SPRINT LOADING: EFFECT OF FOAM ROLLING ON RECOVERY
The present study aimed to evaluate the effects of foam rolling (FR) on recovery by examining selected time-domain and frequency-domain heart rate variability (HRV) parameters in elite swimmers following intensive interval sprint training. It was hypothesized that FR would enhance HRV recovery compared to active recovery performed through swimming.
- Conditions
- Healthy, Swimming, Autonomic Nervous System Function, Recovery
- Being tested
- Swimming+FoamRollingRecovery, SwimmingRecovery
- Keywords
- swimming, heart rate variability, foam rolling, recovery
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Swimming+FoamRollingRecoveryOther
warm-up: 5 min FR, 5 min stretching, 1500 m low-tempo freestyle swim (~20 min). PreT: HR and HRV baseline measurements. 1T: 50 m swim at 90-100% intensity; HRV, recorded. 2T: 3 × 50 m swim at 90-100% intensity with passive rest (~15 s) between repetitions; HR recorded. Recovery Protocols: FR: 750 m Low Initensity Freestyle Swimming (~10 min) + 10 min FR. PostT: HRV was recorded.
SwimmingRecoveryOther
warm-up: 5 min FR, 5 min stretching, 1500 m low-tempo freestyle swim (~20 min). PreT: HRV baseline measurements. 1T: 50 m swim at 90-100% intensity; HRV recorded. 2T: 3 × 50 m swim at 90-100% intensity with passive rest (~15 s) between repetitions; HRV recorded. Recovery Protocols: NFR: 1500 m Low Intensity Freestyle Swimming (~20 min). PostT: HRV recorded.
| Study group | Role | What they receive |
|---|---|---|
| Swimm + Foam rolling (FR) | Experimental | 1. Warm-up: 5 min of foam rolling (FR), 5 min of stretching, and 1500 m of low-tempo freestyle swimming (~20 min).
2. Pre-test: Baseline HR and HRV measurements were recorded.
3. A 50 m swim was performed at 90-100% intensity.
4. HR and HRV were recorded (T1).
5. Participants completed 3 × 50 m swims at 90-100% intensity with passive recovery (~15 s) between repetitions.
6. HR and HRV were recorded (T2).
7. Recovery Protocol (FR): 750 m of low-intensity freestyle swimming (~10 min) followed by 10 min of FR.
8. Post-test: HR and HRV were recorded. Receives: Other: Swimming+FoamRollingRecovery |
| Swimm (NFR) | Active comparator | 1. Warm-up: 5 min of foam rolling (FR), 5 min of stretching, and 1500 m of low-tempo freestyle swimming (~20 min).
2. Pre-test: Baseline HR and HRV measurements were recorded.
3. A 50 m swim was performed at 90-100% intensity.
4. HR and HRV were recorded (T1).
5. Participants completed 3 × 50 m swims at 90-100% intensity with passive recovery (~15 s) between repetitions.
6. HR and HRV were recorded (T2).
7. Recovery Protocol (FR): 1500 m of low-intensity freestyle swimming (~20 min).
8. Post-test: HR and HRV were recorded. Receives: Other: SwimmingRecovery |
What is being measured
The primary outcome is the main question the study is designed to answer.
Heart Rate Variability (HRV)
Time-Domain Parameters of HRV: RR, SDNN, RMSSD, StressIndex Frequency-Domain Parameters of HRV: VLF, LF, HF mesured 4 time during intervantion Pretest, T1, T2 an Postest
Measured: From enrollment to the end of treatment at 15 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Jun 2026
- Study start1 Sep 2024
- Primary completion1 Feb 2025
- Study completion1 Mar 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (7)Papers the sponsor has linked to this study.
- Other trials for HealthyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Enrolment
- 15 participants (actual)
Sponsor and investigators
- Lead sponsor
- Uludag University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Ramiz ARABACI, Uludag University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07641062
- Sponsor's protocol ID
- 2023-26/30
- Acronym
- HRV-SWIMMING
- Status last verified
- Jun 2026
- First submitted
- 4 Jun 2026
- Last updated
- 11 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: Participants are Elite Swimmers who participated in competitions.
Publications
Solana-Tramunt M, Morales J, Busca B, Carbonell M, Rodriguez-Zamora L. Heart-Rate Variability in Elite Synchronized Swimmers. Int J Sports Physiol Perform. 2019 Apr 1;14(4):464-471. doi: 10.1123/ijspp.2018-0538. Epub 2019 Feb 22.
PubMed 30300066Kopec T. Acute Effects of a Single-Session of Full-Body Foam Rolling on Heart Rate Variability. Int J Ther Massage Bodywork. 2022 Dec 1;15(4):18-25. doi: 10.3822/ijtmb.v15i4.739. eCollection 2022 Dec.
PubMed 36467308Flatt AA, Hornikel B, Nakamura FY, Esco MR. Effect of Competitive Status and Experience on Heart Rate Variability Profiles in Collegiate Sprint-Swimmers. J Strength Cond Res. 2022 Oct 1;36(10):2898-2904. doi: 10.1519/JSC.0000000000003992. Epub 2021 Feb 26.
PubMed 36135035Chen JY, Lee YL, Tsai WC, Lee CH, Li YH, Tsai LM, Chen JH, Lin LJ. Cardiac autonomic functions derived from short-term heart rate variability recordings associated with nondiagnostic results of treadmill exercise testing. Int Heart J. 2010 Mar;51(2):105-10. doi: 10.1536/ihj.51.105.
PubMed 20379043Bestwick-Stevenson T, Toone R, Neupert E, Edwards K, Kluzek S. Assessment of Fatigue and Recovery in Sport: Narrative Review. Int J Sports Med. 2022 Dec;43(14):1151-1162. doi: 10.1055/a-1834-7177. Epub 2022 Apr 25.
PubMed 35468639Barrenetxea-Garcia J, Nuell S, Garai S, Murua-Ruiz A, Mielgo-Ayuso J, Calleja-Gonzalez J, Saez de Villarreal E. Effect of Foam Roll recovery method on performance in water polo players: a randomized controlled trial. Phys Sportsmed. 2024 Jun;52(3):262-270. doi: 10.1080/00913847.2023.2240274. Epub 2023 Aug 1.
PubMed 37526535Atlaoui D, Pichot V, Lacoste L, Barale F, Lacour JR, Chatard JC. Heart rate variability, training variation and performance in elite swimmers. Int J Sports Med. 2007 May;28(5):394-400. doi: 10.1055/s-2006-924490. Epub 2006 Nov 16.
PubMed 17111320
Study at a glance
From the registry record, last updated by the sponsor on 11 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- HEART RATE VARIABILITY IN ELITE SWIMMERS AFTER INTENSIVE INTERVAL SPRINT LOADING: EFFECT OF FOAM ROLLING ON RECOVERY
- ClinicalTrials.gov ID
- NCT07641062
- Acronym / sponsor ID
- HRV-SWIMMING / 2023-26/30
- Conditions
- Healthy, Swimming, Autonomic Nervous System Function, Recovery
- Keywords
- swimming, heart rate variability, foam rolling, recovery
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 15 participants (actual)
- Lead sponsor
- Uludag UniversityUniversity, hospital or other
- Study start
- 1 Sep 2024 (actual)
- Primary completion
- 1 Feb 2025 (actual)
- Study completion
- 1 Mar 2025 (actual)
- First posted
- 11 Jun 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The present study aimed to evaluate the effects of foam rolling (FR) on recovery by examining selected time-domain and frequency-domain heart rate variability (HRV) parameters in elite swimmers following intensive interval sprint training. It was hypothesized that FR would enhance HRV recovery compared to active recovery performed through swimming.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Swimm + Foam rolling (FR) | Experimental | Other: Swimming+FoamRollingRecovery1. Warm-up: 5 min of foam rolling (FR), 5 min of stretching, and 1500 m of low-tempo freestyle swimming (~20 min). 2. Pre-test: Baseline HR and HRV measurements were recorded. 3. A 50 m swim was performed at 90-100% intensity. 4. HR and HRV were recorded (T1). 5. Participants completed 3 × 50 m swims at 90-100% intensity with passive recovery (~15 s) between repetitions. 6. HR and HRV were recorded (T2). 7. Recovery Protocol (FR): 750 m of low-intensity freestyle swimming (~10 min) followed by 10 min of FR. 8. Post-test: HR and HRV were recorded. |
| Swimm (NFR) | Active comparator | Other: SwimmingRecovery1. Warm-up: 5 min of foam rolling (FR), 5 min of stretching, and 1500 m of low-tempo freestyle swimming (~20 min). 2. Pre-test: Baseline HR and HRV measurements were recorded. 3. A 50 m swim was performed at 90-100% intensity. 4. HR and HRV were recorded (T1). 5. Participants completed 3 × 50 m swims at 90-100% intensity with passive recovery (~15 s) between repetitions. 6. HR and HRV were recorded (T2). 7. Recovery Protocol (FR): 1500 m of low-intensity freestyle swimming (~20 min). 8. Post-test: HR and HRV were recorded. |
Who may qualify
- Ages
- 15 to 18 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (1 listed)
- membership in the National Olympic Preparation Centre (TOHM), (2) ≥5 years of competitive swimming experience, and (3) participation in ≥3 international competitions within the past year
Key exclusion criteria (3 listed)
- cardiovascular, respiratory, or musculoskeletal conditions within the past six months,
- use of medications or stimulants affecting performance within the past three months
- unsuitability for physical activity according to EGZ-A+ assessment
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Swimming+FoamRollingRecoverywarm-up: 5 min FR, 5 min stretching, 1500 m low-tempo freestyle swim (~20 min). PreT: HR and HRV baseline measurements. 1T: 50 m swim at 90-100% intensity; HRV, recorded. 2T: 3 × 50 m swim at 90-100% intensity with passive rest (~15 s) between repetitions; HR recorded. Recovery Protocols: FR: 750 m Low Initensity Freestyle Swimming (~10 min) + 10 min FR. PostT: HRV was recorded. | Other | Swimm + Foam rolling (FR) |
| SwimmingRecoverywarm-up: 5 min FR, 5 min stretching, 1500 m low-tempo freestyle swim (~20 min). PreT: HRV baseline measurements. 1T: 50 m swim at 90-100% intensity; HRV recorded. 2T: 3 × 50 m swim at 90-100% intensity with passive rest (~15 s) between repetitions; HRV recorded. Recovery Protocols: NFR: 1500 m Low Intensity Freestyle Swimming (~20 min). PostT: HRV recorded. | Other | Swimm (NFR) |
Primary outcome
Heart Rate Variability (HRV)
Time frame: From enrollment to the end of treatment at 15 days
Time-Domain Parameters of HRV: RR, SDNN, RMSSD, StressIndex Frequency-Domain Parameters of HRV: VLF, LF, HF mesured 4 time during intervantion Pretest, T1, T2 an Postest
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 11 Jun 2026.
- Background: PubMed 30300066Solana-Tramunt M, Morales J, Busca B, Carbonell M, Rodriguez-Zamora L. Heart-Rate Variability in Elite Synchronized Swimmers. Int J Sports Physiol Perform. 2019 Apr 1;14(4):464-471. doi: 10.1123/ijspp.2018-0538. Epub 2019 Feb 22.
- Background: PubMed 36467308Kopec T. Acute Effects of a Single-Session of Full-Body Foam Rolling on Heart Rate Variability. Int J Ther Massage Bodywork. 2022 Dec 1;15(4):18-25. doi: 10.3822/ijtmb.v15i4.739. eCollection 2022 Dec.
- Background: PubMed 36135035Flatt AA, Hornikel B, Nakamura FY, Esco MR. Effect of Competitive Status and Experience on Heart Rate Variability Profiles in Collegiate Sprint-Swimmers. J Strength Cond Res. 2022 Oct 1;36(10):2898-2904. doi: 10.1519/JSC.0000000000003992. Epub 2021 Feb 26.
- Background: PubMed 20379043Chen JY, Lee YL, Tsai WC, Lee CH, Li YH, Tsai LM, Chen JH, Lin LJ. Cardiac autonomic functions derived from short-term heart rate variability recordings associated with nondiagnostic results of treadmill exercise testing. Int Heart J. 2010 Mar;51(2):105-10. doi: 10.1536/ihj.51.105.
- Background: PubMed 35468639Bestwick-Stevenson T, Toone R, Neupert E, Edwards K, Kluzek S. Assessment of Fatigue and Recovery in Sport: Narrative Review. Int J Sports Med. 2022 Dec;43(14):1151-1162. doi: 10.1055/a-1834-7177. Epub 2022 Apr 25.
- Background: PubMed 37526535Barrenetxea-Garcia J, Nuell S, Garai S, Murua-Ruiz A, Mielgo-Ayuso J, Calleja-Gonzalez J, Saez de Villarreal E. Effect of Foam Roll recovery method on performance in water polo players: a randomized controlled trial. Phys Sportsmed. 2024 Jun;52(3):262-270. doi: 10.1080/00913847.2023.2240274. Epub 2023 Aug 1.
- Background: PubMed 17111320Atlaoui D, Pichot V, Lacoste L, Barale F, Lacour JR, Chatard JC. Heart rate variability, training variation and performance in elite swimmers. Int J Sports Med. 2007 May;28(5):394-400. doi: 10.1055/s-2006-924490. Epub 2006 Nov 16.
- Individual participant dataSharing planned: No. Participants are Elite Swimmers who participated in competitions.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Swimming+FoamRollingRecovery and SwimmingRecovery in people with Healthy and Swimming, run by Uludag University at 1 site in Turkey (Türkiye).
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 1 inclusion and 3 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: finished, as of the sponsor's last update on 11 Jun 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 Turkey (Türkiye). 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Heart Rate Variability (HRV) (time frame: From enrollment to the end of treatment at 15 days). 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 NCT07641062, 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 11 Jun 2026.