RT Journal Article
SR Electronic
T1 Reliability of maximum oxygen uptake in cardiopulmonary exercise testing with continuous laryngoscopy
JF ERJ Open Research
JO erjor
FD European Respiratory Society
SP 00825-2020
DO 10.1183/23120541.00825-2020
VO 7
IS 1
A1 Mette Engan
A1 Ida Jansrud Hammer
A1 Marianne Bekken
A1 Thomas Halvorsen
A1 Zoe Louise Fretheim-Kelly
A1 Maria Vollsæter
A1 Lars Peder Vatshelle Bovim
A1 Ola Drange Røksund
A1 Hege Clemm
YR 2021
UL http://openres.ersjournals.com/content/7/1/00825-2020.abstract
AB Aims A cardiopulmonary exercise test (CPET) is the gold standard to evaluate symptom-limiting exercise intolerance, while continuous laryngoscopy performed during exercise (CLE) is required to diagnose exercise-induced laryngeal obstruction. Combining CPET with CLE would save time and resources; however, the CPET data may be distorted by the extra equipment. We therefore aimed to study whether CPET with CLE influences peak oxygen uptake (V′O2peak) and other gas exchange parameters when compared to a regular CPET.Methods Forty healthy athletes without exercise-related breathing problems, 15–35 years of age, performed CPET to peak exercise with and without an added CLE set-up, in randomised order 2–4 days apart, applying an identical computerised treadmill protocol.Results At peak exercise, the mean difference (95% confidence interval) between CPET with and without extra CLE set-up for V′O2peak, respiratory exchange ratio (RER), minute ventilation (V′E) and heart rate (HR) was 0.2 (−0.4 to 0.8) mL·kg−1·min−1, 0.01(−0.007 to 0.027) units, 2.6 (−1.3 to 6.5) L·min−1 and 1.4 (−0.8 to 3.5) beats·min−1, respectively. Agreement (95% limits of agreement) for V′O2peak, RER and V′E was 0.2 (±3.7) mL·kg−1·min−1, 0.01 (±0.10) units and 2.6 (±24.0) L·min−1, respectively. No systematic or proportional bias was found except for the completed distance, which was 49 m (95% CI 16 to 82 m) longer during CPET.Conclusion Parameters of gas exchange, including V′O2peak and RER, obtained from a maximal CPET performed with the extra CLE set-up can be used interchangeably with data obtained from standard CPET, thus preventing unnecessary additional testing.Cardiopulmonary exercise testing (CPET) with concurrent continuous laryngoscopy provides reliable measures for maximal oxygen consumption and other CPET data https://bit.ly/36wVJhb