Clinical trial Recruiting at 1 site Interventional Ages 18 to 45

Whether the repeated-bout protective effect after eccentric exercise depends on inflammation and oxidative stress

Official title: Does the Development of the Repeated Bout Effect Depend on Oxidative Stress and Inflammation?

Run by University of Bath · NCT07472244 · Data updated 2026-11-12

This project will test if taking vitamin C and ibuprofen around a hard eccentric workout changes the protective repeated-bout effect in healthy adults aged 18–45.

Quick facts

Study typeInterventional
Ages18 Years to 45 Years
SexAll
Enrollment52 (estimated)
SponsorUniversity of Bath
Academic / other
Locations1 site (Bath)
StatusRecruiting
StartedSeptember 1, 2025
Main results expectedFebruary 28, 2027
Study endsFebruary 28, 2027
Registry record updatedMarch 16, 2026
Trial IDNCT07472244 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are healthy adults 18–45 years old with BMI 18.5–29.9 who can complete 20 minutes of bench-stepping, are not familiarised with that exercise protocol, and are not taking anti-inflammatory medications.

Probably not a fit

People older than 45, with BMI outside 18.5–29.9, with ongoing clinical inflammation from other causes, using prescribed anti-inflammatory drugs, or unable to perform the exercise are unlikely to benefit from participation.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a double-blind, placebo-controlled, parallel-group trial at the University of Bath enrolling healthy adults who perform a 20-minute bench-stepping eccentric exercise. Participants will receive either acute vitamin C and ibuprofen or placebo before/after the exercise, and researchers will measure soreness, performance on a later bout, blood markers of inflammation, and markers of oxidative stress. The study compares the size of the initial exercise-induced damage and the magnitude of the repeated-bout effect between groups to see if antioxidant/anti-inflammatory treatment alters the protective adaptation. Eligibility is limited to adults 18–45 with BMI 18.5–29.9 who are able to complete the exercise and are not taking anti-inflammatory medications.

Why it matters

Potential benefit: If successful, the results could guide athletes on whether common supplements like vitamin C and ibuprofen help or hinder protective adaptations after strenuous eccentric exercise.

How similar studies have gone: Previous research reliably shows a repeated-bout effect and that antioxidants or NSAIDs can modify inflammatory and oxidative responses, but randomized trials directly testing whether such supplements reduce the repeated-bout protective adaptation are limited and have mixed results.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* 18 - 45 years of age
* BMI 18.5 - 29.9 kg/m2
* Able to perform 20-minutes of bench stepping exercise
* Capable and willing to provide consent (oral and written)

Exclusion Criteria:

* Familiarised with bench stepping exercise procedures
* Not cleared for exercise by health questionnaires or physical activity readiness questionnaire
* Participants exhibiting any alteration in clinical inflammation parameters due to other cause
* Participants currently being prescribed any anti-inflammatory medications

Where it's running

  • University of Bath
    Bath, United Kingdom
    Recruiting

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.