Athletes
Conditions
Keywords
endurance trained, ergospirometry, Vo2peak
Brief summary
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.
Detailed description
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.
Interventions
DIAGNOSTIC_TESTErgometric test
Ramp test followed by a step test, both with ergospirometry
Sponsors
Swiss Paraplegic Research, Nottwil
Study design
Observational model
CASE_CROSSOVER
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| VO2 peak | during the last 30 seconds of the ramp test | Maximal oxygen consumption (VO2) peak values during the ramp test |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| VO2 | during the last 2 minutes of the step test | oxygen consumption (VO2) values during step test in steady state |
| VCO2 | during the last 2 minutes of the step test | carbon dioxide production (VCO2) values during step test in steady state |
| Ventilation | during the last 2 minutes of the step test | Ventilation during step test in steady state |
| breathing frequency | during the last 2 minutes of the step test | breathing frequency values during step test in steady state |
Countries
Switzerland
Outcome results
None listed