Lung Diffusing Capacity for Nitric Oxide During Cycling Exercise

April 15, 2021 updated by: Thomas Radtke

Test-retest Reliability of Lung Diffusing Capacity for Nitric Oxide During Light and Moderate Intensity Cycling Exercise

This study investigates the test-retest reliability of the lung diffusing capacity for nitric oxide in healthy individuals during exercise.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Detailed Description

The aim of this study of to evaluate the test-retest reliability of single-breath lung diffusing capacity measurements for nitric oxide (DLNO) in healthy individuals during light and moderate intensity cycling exercise. Healthy subjects will perform repeated single-breath DLNO measurements during light (i.e., at 50% of the first ventilatory threshold) and moderate intensity exercise (i.e., 80% of the first ventilatory threshold) on a stationary cycle ergometer.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
17

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Switzerland
      • Zurich, Switzerland, 8001
        • University of Zurich and University Hospital of Zurich

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Healthy people without chronic cardiopulmonary diseases will be invited to participate in this study.

Description

Inclusion Criteria:

  • Healthy
  • Age 18 yrs and older
  • Ability to follow study procedures and instructions in German

Exclusion Criteria:

  • Any known cardiopulmonary or metabolic diseases (e.g., heart disease, diabetes mellitus etc)
  • Obesity (BMI > 30kg/m2)
  • Smoking (ex-smoker allowed; if they stopped smoking at least one year before the examination)
  • Mental impairment leading to inability to cooperate
  • Respiratory infection in the last two weeks
  • Forced expiratory volume in 1s/ forced vital capacity (FEV1/FVC ratio) FEV1/FVC ratio < lower limit of normal according to equations by Quanjer et al. Eur Respir J 2012.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Diffusing capacity for nitric oxide (DLNO)
Time Frame: At second study visit
DLNO (in ml/min/mmHg) measured at 80% of the gas exchange threshold during cycling exercise.
At second study visit
Diffusing capacity for nitric oxide (DLNO)
Time Frame: At third study visit, approximately 1-2 weeks after second study visit
DLNO (in ml/min/mmHg) measured at 80% of the gas exchange threshold during cycling exercise.
At third study visit, approximately 1-2 weeks after second study visit

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Diffusing capacity for nitric oxide (DLNO)
Time Frame: At second study visit
DLNO (in ml/min/mmHg) measured at 50% of the gas exchange threshold during cycling exercise.
At second study visit
Diffusing capacity for nitric oxide (DLNO)
Time Frame: At third study visit, approximately 1-2 weeks after second study visit
DLNO (in ml/min/mmHg) measured at 50% of the gas exchange threshold during cycling exercise.
At third study visit, approximately 1-2 weeks after second study visit
Diffusing capacity for carbon monoxide (DLCO)
Time Frame: At second study visit
DLCO (in ml/min/mmHg) measured at 50% of the gas exchange threshold during cycling exercise.
At second study visit
Diffusing capacity for carbon monoxide (DLCO)
Time Frame: At third study visit, approximately 1-2 weeks after second study visit
DLCO (in ml/min/mmHg) measured at 50% of the gas exchange threshold during cycling exercise.
At third study visit, approximately 1-2 weeks after second study visit
Diffusing capacity for carbon monoxide (DLCO)
Time Frame: At second study visit
Agreement in DLCO (in ml/min/mmHg) measured at 80% of the gas exchange threshold during cycling exercise.
At second study visit
Diffusing capacity for carbon monoxide (DLCO)
Time Frame: At third study visit, approximately 1-2 weeks after second study visit
Agreement in DLCO (in ml/min/mmHg) measured at 80% of the gas exchange threshold during cycling exercise.
At third study visit, approximately 1-2 weeks after second study visit
Alveolar volume (VA)
Time Frame: At second study visit
VA (in L) measured at 50% of the gas exchange threshold during cycling exercise.
At second study visit
Alveolar volume (VA)
Time Frame: At third study visit, approximately 1-2 weeks after second study visit
VA (in L) measured at 50% of the gas exchange threshold during cycling exercise.
At third study visit, approximately 1-2 weeks after second study visit
Alveolar volume (VA)
Time Frame: At second study visit
Alveolar volume (in L) measured at 80% of the gas exchange threshold during cycling exercise.
At second study visit
Alveolar volume (VA)
Time Frame: At third study visit, approximately 1-2 weeks after second study visit
Alveolar volume (in L) measured at 80% of the gas exchange threshold during cycling exercise.
At third study visit, approximately 1-2 weeks after second study visit
Breath hold time (BHT)
Time Frame: At second study visit
BHT (in s) measured at 80% of the gas exchange threshold during cycling exercise.
At second study visit
Breath hold time (BHT)
Time Frame: At third study visit, approximately 1-2 weeks after second study visit
BHT (in s) measured at 80% of the gas exchange threshold during cycling exercise.
At third study visit, approximately 1-2 weeks after second study visit
Breath hold time (BHT)
Time Frame: At second study visit
BHT (in s) measured at 50% of the gas exchange threshold during cycling exercise.
At second study visit
Breath hold time (BHT)
Time Frame: At third study visit, approximately 1-2 weeks after second study visit
BHT (in s) measured at 50% of the gas exchange threshold during cycling exercise.
At third study visit, approximately 1-2 weeks after second study visit

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Thomas Radtke

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Thomas Radtke, PhD, University of Zurich and University Hospital Zurich

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 19, 2020

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2020

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 1, 2021

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 28, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 4, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 5, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 19, 2021

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 15, 2021

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2021

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2020-01756

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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