NCT07412639

Brief Summary

Smoking causes chronic inflammation and endothelial dysfunction through alterations in nitric oxide synthase (NOS) pathways. Maresin is an anti-inflammatory pro-resolving lipid mediator that plays important roles in the resolution of inflammatory processes. Tabata exercise is a short-duration, high-intensity exercise modality with beneficial effects on the cardiovascular system. The aim of this study was to comparatively evaluate the effects of tabata exercise on iNOS, eNOS, and Maresin levels, as well as the relationships among these biomarkers, in smokers and non-smokers.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
40

participants targeted

Target at P25-P50 for not_applicable

Timeline
Completed

Started Oct 2025

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 24, 2025

Completed
3 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

January 16, 2026

Completed
14 days until next milestone

Study Completion

Last participant's last visit for all outcomes

January 30, 2026

Completed
10 days until next milestone

First Submitted

Initial submission to the registry

February 9, 2026

Completed
8 days until next milestone

First Posted

Study publicly available on registry

February 17, 2026

Completed
Last Updated

February 17, 2026

Status Verified

February 1, 2026

Enrollment Period

3 months

First QC Date

February 9, 2026

Last Update Submit

February 9, 2026

Conditions

Keywords

Tabata ExercisesmokerMaresinnitric oxide synthase

Outcome Measures

Primary Outcomes (4)

  • serum inducible nitric oxide synthase (iNOS) level

    iNOS level were quantified using immunosorbent assay (ELISA) kits, according to the manufacturers' instructions.

    6 week after exercise

  • serum inducible nitric oxide synthase (iNOS) level

    iNOS level were quantified using immunosorbent assay (ELISA) kits, according to the manufacturers' instructions.

    12 week after exercise

  • serum endothelial nitric oxide (eNOS) synthase level

    eNOS level were quantified using immunosorbent assay (ELISA) kits, according to the manufacturers' instructions.

    6 week after exercise

  • serum endothelial nitric oxide (eNOS) synthase level

    eNOS level were quantified using immunosorbent assay (ELISA) kits, according to the manufacturers' instructions.

    12 week after exercise

Secondary Outcomes (2)

  • serum maresin level

    6 week after exercise

  • serum maresin level

    12 week after exercise

Study Arms (2)

Smoker

ACTIVE COMPARATOR

* Current smokers with a smoking history of at least 2 years * Daily cigarette consumption of ≥10 cigarettes per day

Other: Tabata Exercise Protocol

Nonsmoker

ACTIVE COMPARATOR

* Individuals who had never smoked, or * Individuals who had not smoked for at least 5 years, with no history of regular passive smoking exposure

Other: Tabata Exercise Protocol

Interventions

The Tabata protocol consisted of 20-second high-intensity intervals exceeding 70 % of VO₂max and approaching \~90 % of VO₂max, followed by 10 seconds of rest, repeated for 4 minutes per set. Exercises included high knees, froggers, speed skaters, jumping jacks, and mountain climbers. Following the original Tabata design \[29\], each work-rest cycle was repeated eight times. Each training session began with a 10-15 minute warm-up and concluded with a 10-15 minute cool-down. The total number of sets ranged from 1 to 4, and the number of exercises per session ranged from 4 to 8. Training intensity progressively increased from 30 % to 89 % of maximal effort according to the principle of progressive overload.

NonsmokerSmoker

Eligibility Criteria

Age18 Years - 40 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Age between 18 and 40 years
  • No regular participation in structured physical exercise for at least 6 months prior to enrollment
  • Absence of any acute or chronic inflammatory disease at baseline
  • No history of cardiovascular, metabolic, pulmonary, or neurological disorders
  • Ability to comply with the study protocol and complete the tabata exercise program
  • Provision of written informed consent

You may not qualify if:

  • Initiation or cessation of smoking during the study period
  • Use of anti-inflammatory, antioxidant, corticosteroid, or vasoactive medications
  • Acute infection, surgical intervention, or major trauma within the preceding 3 months
  • Diagnosis of diabetes mellitus, hypertension, coronary artery disease, or chronic pulmonary disease
  • History of alcohol or substance abuse
  • Pregnancy or breastfeeding
  • Musculoskeletal or orthopedic conditions that could limit participation in tabata exercise
  • Inability to adhere to the exercise protocol or failure to complete follow-up assessments

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Atatürk University

Erzurum, Yakutiye, Turkey (Türkiye)

Location

Related Publications (2)

  • Ding N, Sang Y, Chen J, Ballew SH, Kalbaugh CA, Salameh MJ, Blaha MJ, Allison M, Heiss G, Selvin E, Coresh J, Matsushita K. Cigarette Smoking, Smoking Cessation, and Long-Term Risk of 3 Major Atherosclerotic Diseases. J Am Coll Cardiol. 2019 Jul 30;74(4):498-507. doi: 10.1016/j.jacc.2019.05.049.

    PMID: 31345423BACKGROUND
  • Fysikopoulos A, Seimetz M, Hadzic S, Knoepp F, Wu CY, Malkmus K, Wilhelm J, Pichl A, Bednorz M, Tadele Roxlau E, Ghofrani HA, Sommer N, Gierhardt M, Schermuly RT, Seeger W, Grimminger F, Weissmann N, Kraut S. Amelioration of elastase-induced lung emphysema and reversal of pulmonary hypertension by pharmacological iNOS inhibition in mice. Br J Pharmacol. 2021 Jan;178(1):152-171. doi: 10.1111/bph.15057. Epub 2020 Apr 28.

    PMID: 32201936BACKGROUND

MeSH Terms

Conditions

SmokingCigarette Smoking

Condition Hierarchy (Ancestors)

BehaviorTobacco SmokingTobacco Use

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NON RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

February 9, 2026

First Posted

February 17, 2026

Study Start

October 24, 2025

Primary Completion

January 16, 2026

Study Completion

January 30, 2026

Last Updated

February 17, 2026

Record last verified: 2026-02

Data Sharing

IPD Sharing
Will not share

Locations