Name: LORENA FLORES DUARTE
Publication date: 20/11/2023
Examining board:
Name |
Role |
|---|---|
| LUCIANA CARLETTI | Presidente |
| NUNO MANUEL FRADE DE SOUSA | Examinador Externo |
| RICHARD DIEGO LEITE | Examinador Interno |
Summary: This study aims to analyze the agreement of cardiopulmonary variables between a
cardiopulmonary exercise test with elastic resistance (CPxEL) and high-intensity interval
exercise with elastic resistance (EL-HIIE). Methods: Twenty-two physically independent
participants were recruited. Visit one consisted of conducting a health survey and
anthropometric assessment. On visit two, the participants performed CPxEL. After seven
days, on visit three, the participants performed EL-HIIE. The CPxEL was carried out on a
rubber mat demarcated by lines representing eight stages. The test consisted of alternating
back and forth steps against elastic resistance. The increments were performed at a rate of
one stage per minute, following a cadence controlled by a metronome calibrated by beats
per minute (bpm). The EL-HIIE was performed at the stage corresponding to an intensity
of ~85% VO2max, as determined byCPxEL. The EL-HIIE consisted of 10 × 1 min (work):1
min (passive rest), with a cadence of 200 bpm. Cardiopulmonary parameters, heart rate
(HR), and oxygen consumption (VO2) were measured during exercise. Bland–Altman was
applied to analyze the agreement between the HR and VO2 found in EL-HIIE and the values
prescribed by CPxEL (~85–90% VO2max). Results: The HRpeak and VO2peak in the EL-
HIIE showed good agreement with the VO2CPxEL and HRCPxEL values, showing an average
difference of (1.7 mL·kg1·min1) and (0.3 bpm). Conclusions: The results of the present
study demonstrate the agreement of cardiopulmonary variables between the CPxEL and
the EL-HIIE. Therefore, for a more specific prescription of EL-HIIE intensity, CPxEL can
be used.
