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Completed

NCT Number: NCT07728422

Effects of Ozone Therapy on Muscle Damage

The goal of this clinical trial is to determine the effectiveness of different ozone therapy methods in enhancing recovery after muscle-damaging exercise in healthy adults, and to evaluate their impact on biochemical markers of muscle damage and fatigue.

The main questions it aims to answer are:

* Do ozone-based interventions accelerate recovery by reducing biochemical markers of muscle damage and fatigue following eccentric exercise? * Which ozone therapy modality provides the greatest recovery benefit? Researchers will compare three intervention groups (autohemotherapy, ozone sauna therapy, and ozonated lavender oil massage) with a control group receiving no treatment.

Participants will:

* Complete a standardized eccentric exercise protocol designed to induce muscle damage * Receive one of the assigned interventions or no treatment (control) * Provide blood samples at multiple time points (baseline, post-exercise, post-intervention, and 24, 48, and 72 hours follow-up) to assess recovery- related biomarkers

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Key information

Age range

18 year–30 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

Inonu University

Malatya, 44280, Turkey (Türkiye)

About this study

This randomized controlled trial was designed to investigate the effects of different ozone therapy modalities on recovery following eccentric exercise-induced muscle damage in healthy male amateur collegiate football players aged 18-30 years.

Thirty-two participants were randomly assigned to one of four groups: autohemotherapy, ozone sauna therapy, ozonated lavender oil massage, or a no-intervention control group (n = 8 per group). All participants completed a standardized eccentric exercise protocol to induce muscle damage and fatigue.

Following exercise, participants in the intervention groups received a single session of their assigned treatment, while the control group remained at rest without any recovery intervention. Autohemotherapy involved withdrawal of venous blood, exposure to an oxygen-ozone mixture, and reinfusion. Ozone sauna therapy was applied in a sealed cabin under controlled conditions with measures to prevent inhalation. Ozonated lavender oil massage was administered to the lower extremities using standardized massage techniques.

Blood samples were collected at baseline, immediately post-exercise, post-intervention, and at 24, 48, and 72 hours after intervention. Serum levels of lactate dehydrogenase (LDH), creatine kinase (CK), aspartate aminotransferase (AST), alanine aminotransferase (ALT), and uric acid (UA) were analyzed as indicators of muscle damage and metabolic stress.

Statistical analysis was performed using two-way permutational multivariate analysis of variance (PERMANOVA) to assess group, time, and group × time interaction effects.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • male football players aged 18-30 years
  • playing exclusively in the midfield position
  • active participation in regional professional football leagues (non-top-tier)
  • engagement in regular football training at least four sessions per week with a minimum duration of 90 minutes per session
  • absence of acute or chronic musculoskeletal injuries within the preceding six months
  • no use of anti-inflammatory medications or ergogenic supplements within the four weeks prior to the study

Exclusion criteria

  • female football players
  • diagnosed cardiovascular, metabolic, or neurological disorders
  • known hypersensitivity to ozone exposure or lavender oil
  • any surgical intervention within the past six months
  • concurrent participation in alternative recovery or therapeutic interventions during the study period
  • playing positions other than midfield

Treatment and study plan

Autohemotherapy

Other

Autohemotherapy was performed by withdrawing 100 mL of venous blood, which was subsequently exposed to an oxygen-ozone gas mixture (5% ozone, 95% oxygen) for 5-10 minutes in an ozone-resistant, sterile container. The ozonated blood was then rein-fused intravenously over a 15-minute period in accordance with established clinical protocols

Ozone Sauna Therapy

Other

Ozone sauna therapy was administered in a sealed cabin maintained at a tempera-ture of 45°C. Participants remained seated with the head positioned outside the cabin and the neck sealed using a polyethylene collar to prevent ozone inhalation. Each session lasted 20 minutes and was conducted at an ozone concentration of 20 µg·mL-¹

Ozonated Lavender Oil Massage

Other

Massage with ozonated lavender oil was administered by a certified massage thera-pist and targeted the lower extremity muscle groups, including the quadriceps, ham-strings, and gluteal muscles. The intervention lasted 20 minutes in total (10 minutes per limb) and followed standardized techniques adapted from Braun and Simonson (2008).

Primary outcomes

  1. CK

    Time frame: Baseline, immediately post-exercise, immediately after ozone sauna treatment, 24 hours after ozone sauna treatment, 48 hours after ozone sauna treatment and 72 hours after ozone sauna treatment.

    Serum Creatine Kinase level

Secondary outcomes

  1. LDH

    Time frame: Baseline, immediately post-exercise, immediately after ozone sauna treatment, 24 hours after ozone sauna treatment, 48 hours after ozone sauna treatment and 72 hours after ozone sauna treatment.

    Serum lactate dehydrogenase level

  2. AST

    Time frame: Baseline, immediately post-exercise, immediately after ozone sauna treatment, 24 hours after ozone sauna treatment, 48 hours after ozone sauna treatment and 72 hours after ozone sauna treatment.

    Serum Aspartate Aminotransferase level

  3. UA

    Time frame: Baseline, immediately post-exercise, immediately after ozone sauna treatment, 24 hours after ozone sauna treatment, 48 hours after ozone sauna treatment and 72 hours after ozone sauna treatment.

    Serum Uric Acid level

  4. ALT

    Time frame: Baseline, immediately post-exercise, immediately after ozone sauna treatment, 24 hours after ozone sauna treatment, 48 hours after ozone sauna treatment and 72 hours after ozone sauna treatment.

    Serum Alanine Aminotransferase level

Sponsors and collaborators

Lead sponsor

Inonu University

Other

Registry information

Official study title

Effects of Ozone Therapy Modalities on Biochemical Markers of Muscle Damage Following Eccentric Exercise

Important dates

Study start
2024
Primary completion
2024
Study completion
2025
First posted
Jul 27, 2026
Registry last updated
Jul 27, 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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