Name: ZIRLEI VIDAL SOARES
Publication date: 28/10/2024
Examining board:
Name |
Role |
|---|---|
| LUCIANA CARLETTI | Presidente |
| RICARDO AUGUSTO BARBIERI | Examinador Externo |
| VICTOR HUGO GASPARINI NETO | Coorientador |
| WELLINGTON LUNZ | Examinador Externo |
Summary: Introduction: Cardiopulmonary exercise testing (CPx) is used to determine maximum oxygen consumption (V O2max) and ventilatory thresholds (LV1 and LV2), and is an important method for assessing cardiorespiratory fitness and health status. Traditional ergometers such as treadmills and bicycles are commonly used to perform CPx. However, these ergometers have limitations regarding their use for prescribing elastic resistance running training, as they do not present specificity with the movement pattern required in this type of exercise. In this sense, a new cardiopulmonary test with elastic resistance (CPxEL) was included in the scientific literature. The CPxEL is an incremental running test against elastic resistance, in which back and forth movements are performed on a mat, demarcated by stages. This test allows the assessment of cardiorespiratory fitness and can be used to prescribe elastic resistance running training. However, the feasibility and safety of CPxEL to evaluate a population of adults and elderly individuals are unknown. Objective: To describe and compare the physiological and perceptual responses to CPxEL using traditional CPx (treadmill) as a reference in middle-aged and elderly adults. Methods: Twenty-seven physically active participants (57 ± 7 years) underwent two maximal CPx and CPxEL tests in a randomized manner, with a seven-day interval between tests. Data were subjected to the Shapiro-Wilk normality test. Repeated measures ANOVA was used to compare VT1, VT2, and Maximum between CPxEL and CPx, paired t-test to compare V O2max in the verification phase, Wilcoxon and effect size to compare and correlate the results between tests. Results: V O2 and HR showed higher values for CPxEL in VT1 (P < 0.05). In VT2, OMNI-RES EB showed significant differences (Z = -2.38; P = 0.02). At maximum effort, RTR (P < 0.05) was higher in CPx and OMNI-RES EB (Z = -1.97; P = 0.05) was higher in C CPxEL. Conclusion: CPxEL presented maximal and submaximal responses, similar to CPx. However, specificity was observed in the physiological responses of LV1.
Keywords: Stress test, Stress test with analysis of ventilatory gases, Oxygen consumption and Physical fitness.
