Skip to main content
OpenTrials
Completed

NCT Number: NCT06194110

Comparing Stationary and Mobile Ergospirometry

The goal of this randomized crossover trial is to compare the results of a stationary and a mobile ergospirometry system in 20 healthy endurance trained participants. The main question it aims to answer is to investigate the differences in VO2-measurements between the mobile K5 and the stationary Quark ergospirometry system.

Participants will do a maximal ramp test followed by a sub maximal step test with 6 stages on two different days.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Athletes

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Swiss Paraplegic Centre

Nottwil, Canton of Lucerne, 6207, Switzerland

About this study

20 endurance trained men and/or women will be recruited. A screening will be done before starting with the test protocol on the treadmill to ensure the suitability of the participants. The test protocol includes two parts. The first part is a maximal ramp test (+0.6km/h each minute until exhaustion). The second part includes a step test with 6 sub maximal stages - each lasting 5 minutes - at 50%, 55%, 60%, 70%, 75% and 80% of the maximal velocity achieved in the first part. There will be a short break between the ramp and the step test. The stationary and the mobile system are tested on 2 separate days with a break of 1-3 days in between. On the second day, procedure will be exactly the same for the participants.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • endurance trained (minimum two times endurance training per week)
  • healthy as assessed by the physical-activity-readiness-questionnaire (PAR-Q)
  • adequately informed and consent confirmed per signature

Exclusion criteria

  • Pregnancy based on anamnesis
  • acute illness, injury, infection, etc., which would impact the measurements

Treatment and study plan

Ergometric test

Diagnostic Test

Ramp test followed by a step test, both with ergospirometry

Primary outcomes

  1. VO2 peak

    Time frame: during the last 30 seconds of the ramp test

    Maximal oxygen consumption (VO2) peak values during the ramp test

Secondary outcomes

  1. VO2

    Time frame: during the last 2 minutes of the step test

    oxygen consumption (VO2) values during step test in steady state

  2. VCO2

    Time frame: during the last 2 minutes of the step test

    carbon dioxide production (VCO2) values during step test in steady state

  3. Ventilation

    Time frame: during the last 2 minutes of the step test

    Ventilation during step test in steady state

  4. breathing frequency

    Time frame: during the last 2 minutes of the step test

    breathing frequency values during step test in steady state

Sponsors and collaborators

Lead sponsor

Swiss Paraplegic Research, Nottwil

Network

Registry information

Official study title

Comparing the Results of a Stationary and a Mobile Ergospirometry System - a Randomized Crossover Trial

Acronym: QK5_2days

Important dates

Study start
2023
Primary completion
2024
Study completion
2024
First posted
Jan 8, 2024
Registry last updated
Dec 27, 2024

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.