Skip to main content
OpenTrials
Completed

NCT Number: NCT07395414

Effect of Different Work-to-rest Ratios During Simulated Taekwondo Combat on Blood Lactate, Heart Rate and Perceptual Responses in Elite Taekwondo Athletes

This randomized cross-over study measured physiological and perceptual responses of taekwondo athletes following a free combat and combats with different W:R ratios. This study was carried out with 4 visits. The first one included body composition measurements and familiarization to the sessions and measurements. During the rest 3 visit, athletes performed simulated combats free and with 1:2 (10 sec work and 20 sec rest), and 2:1 (20 sec work and 10 sec rest) W:R ratios. During all combat sessions, athletes heart rate (HR), blood lactate (bLA), and counter-movement jump performance (CMJ) were measured at rest and at the end of each combat. HR was also measured following each set. Athletes' rating of perceived exertion (RPE) and perceived muscle soreness (PMS) were measured immediately after each combat.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

HIIT

Age range

18 year–26 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

Kastamonu University Faculty of Sport Sciences Physiology Lab

Kastamonu, Turkey (Türkiye)

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • having at least brown belt,
  • having at least 5 years of taekwondo experience,
  • having no injuries for the last 6 months that prevent participating to trainings,
  • competing at national championship and international tournaments during the last year

Exclusion criteria

  • not having a brown belt,
  • having less than 5 years of taekwondo experience,
  • having injuries for the last 6 months that prevent participating to trainings,
  • Not competing at national championship and international tournaments during the last year

Treatment and study plan

Free combat

Other

Athletes completed a taekwondo combat for 3 sets of 2 minutes

1:2 work to rest ratio

Other

Athletes completed a taekwondo combat for 3 sets of 2 mins with 1:2 work to rest ratio (10 sec work and 20 sec rest)

2:1 work to rest ratio

Other

Athletes completed a taekwondo combat for 3 sets of 2 minutes with 2:1 work to rest ratio (20 second work and 10 second rest)

Primary outcomes

  1. Lactate

    Time frame: Immediately after each intervention

    Athletes' lactate levels immediately after the exercise

  2. Heart rate

    Time frame: Before and immediately after each intervention

    Athletes' heart rate responses

  3. CMJ

    Time frame: Before and immediately after each intervention

    Athletes' CMJ was measured before and after each exercise session.

Secondary outcomes

  1. RPE

    Time frame: Immediately after each intervention

    Athletes' RPE was measured immediately after each exercise.

Sponsors and collaborators

Lead sponsor

Kastamonu University

Other

Registry information

Official study title

Randomized Cross-over Study

Important dates

Study start
2023
Primary completion
2023
Study completion
2023
First posted
Feb 9, 2026
Registry last updated
Feb 9, 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.

Related clinical trials

Published trials that share one or more normalized conditions with this study.