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OpenTrials
Completed

NCT Number: NCT07641062

EFFECTS OF FOAM ROLLING ON HRV IN ELITE SWIMMERS

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.

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Key information

Conditions

Healthy Autonomic Nervous System Function Recovery Swimming

Age range

15 year–18 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Bursa Uludag University, Faculty of Sport Sciences

Bursa, 16059, Turkey (Türkiye)

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • 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

Exclusion criteria

  • 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

Treatment and study plan

Swimming+FoamRollingRecovery

Other

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.

SwimmingRecovery

Other

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.

Primary outcomes

  1. 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

Sponsors and collaborators

Lead sponsor

Uludag University

Other

Registry information

Official study title

HEART RATE VARIABILITY IN ELITE SWIMMERS AFTER INTENSIVE INTERVAL SPRINT LOADING: EFFECT OF FOAM ROLLING ON RECOVERY

Acronym: HRV-SWIMMING

Important dates

Study start
2024
Primary completion
2025
Study completion
2025
First posted
Jun 11, 2026
Registry last updated
Jun 11, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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