Chapter-13 Cardiopulmonary Exercise Testing and VO2 Max

2009 ◽  
pp. 105-114
Author(s):  
Jayant Shah
2017 ◽  
Vol 1 (2) ◽  
pp. 33
Author(s):  
Arfi Fachrul Imaduddin ◽  
Yuni Susanti Pratiwi ◽  
Sunaryo B. Sastradimaja

VO2 max can be measured with two protocols, namely direct and indirect. Direct protocolsare known to be valid, but more difficult and expensive. The indirect protocol is often asked ofits validity, but it is practical and cheapest to use in the field. One of the indirect protocolsthat can be used in children is 20-meter Multi-Stage Running (20-MST). This study aimed todetermine the correlation between the 20-MST with Cardiopulmonary Exercise Testing(CPET) in boys. This research used descriptive analytic study design. The subjects were 38boys aged from 11 to 12 of extracurricular sports club members. The research variables areVO2 max results with 2 methods of measurement which are 20-MST and CPET. The statisticaldata were analyzed with Pearson correlation. The result of VO2 max (ml.kg-1.min-1)measurement by the method of 20-MST (28.6 7.962) and result by the method of CPET(40.683 10.7 31) and the correlation value between 20-MST and CPET with R=0.674. Weconcluded that there is a strong correlation between 20-MST test and CPET test for predictingVO2 max among boys.


2021 ◽  
Vol 2 (1) ◽  
pp. 20
Author(s):  
Arfi Fachrul Imaduddin ◽  
Yuni Susanti Pratiwi ◽  
Sunaryo B. Sastradimaja

VO2 max can be measured with two protocols, namely direct and indirect. Direct protocols are known to be valid, but more difficult and expensive. The indirect protocol is often asked of its validity, but it is practical and cheapest to use in the field. One of the indirect protocols that can be used in children is 20-meter Multi-Stage Running (20-MST). This study aimed to determine the correlation between the 20-MST with Cardiopulmonary Exercise Testing (CPET) in boys. This research used descriptive analytic study design. The subjects were 38 boys aged from 11 to 12 of extracurricular sports club members. The research variables are VO2 max results with 2 methods of measurement which are 20-MST and CPET. The statistical data were analyzed with Pearson correlation. The result of VO2 max (ml.kg-1-1.min) measurement by the method of 20-MST (28.6 ± 7.962) and result by the method of CPET (40.683 ± 10.7 31) and the correlation value between 20-MST and CPET with R=0.674. We concluded that there is a strong correlation between 20-MST test and CPET test for predicting VO2 max among boys.


Diagnostics ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 364
Author(s):  
Keisuke Miki

In chronic obstructive pulmonary disease (COPD), exertional dyspnea, which increases with the disease’s progression, reduces exercise tolerance and limits physical activity, leading to a worsening prognosis. It is necessary to understand the diverse mechanisms of dyspnea and take appropriate measures to reduce exertional dyspnea, as COPD is a systemic disease with various comorbidities. A treatment focusing on the motor pathophysiology related to dyspnea may lead to improvements such as reducing dynamic lung hyperinflation, respiratory and metabolic acidosis, and eventually exertional dyspnea. However, without cardiopulmonary exercise testing (CPET), it may be difficult to understand the pathophysiological conditions during exercise. CPET facilitates understanding of the gas exchange and transport associated with respiration-circulation and even crosstalk with muscles, which is sometimes challenging, and provides information on COPD treatment strategies. For respiratory medicine department staff, CPET can play a significant role when treating patients with diseases that cause exertional dyspnea. This article outlines the advantages of using CPET to evaluate exertional dyspnea in patients with COPD.


Author(s):  
Eva Pella ◽  
Afroditi Boutou ◽  
Aristi Boulmpou ◽  
Christodoulos E Papadopoulos ◽  
Aikaterini Papagianni ◽  
...  

Abstract Chronic kidney disease (CKD), especially end-stage kidney disease (ESKD), is associated with increased risk for cardiovascular events and all-cause mortality. Exercise intolerance as well as reduced cardiovascular reserve are extremely common in patients with CKD. Cardiopulmonary exercise testing (CPET) is a non-invasive, dynamic technique that provides an integrative evaluation of cardiovascular, pulmonary, neuropsychological and metabolic function during maximal or submaximal exercise, allowing the evaluation of functional reserves of these systems. This assessment is based on the principle that system failure typically occurs when the system is under stress and, thus, CPET is currently considered to be the gold-standard for identifying exercise limitation and differentiating its causes. It has been widely used in several medical fields for risk stratification, clinical evaluation and other applications but its use in everyday practice for CKD patients is scarce. This article describes the basic principles and methodology of CPET and provides an overview of important studies that utilized CPET in patients with ESKD, in an effort to increase awareness of CPET capabilities among practicing nephrologists.


2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
I.D Poveda Pinedo ◽  
I Marco Clement ◽  
O Gonzalez ◽  
I Ponz ◽  
A.M Iniesta ◽  
...  

Abstract Background Previous parameters such as peak VO2, VE/VCO2 slope and OUES have been described to be prognostic in heart failure (HF). The aim of this study was to identify further prognostic factors of cardiopulmonary exercise testing (CPET) in HF patients. Methods A retrospective analysis of HF patients who underwent CPET from January to November 2019 in a single centre was performed. PETCO2 gradient was defined by the difference between final PETCO2 and baseline PETCO2. HF events were defined as decompensated HF requiring hospital admission or IV diuretics, or decompensated HF resulting in death. Results A total of 64 HF patients were assessed by CPET, HF events occurred in 8 (12.5%) patients. Baseline characteristics are shown in table 1. Patients having HF events had a negative PETCO2 gradient while patients not having events showed a positive PETCO2 gradient (−1.5 [IQR −4.8, 2.3] vs 3 [IQR 1, 5] mmHg; p=0.004). A multivariate Cox proportional-hazards regression analysis revealed that PETCO2 gradient was an independent predictor of HF events (HR 0.74, 95% CI [0.61–0.89]; p=0.002). Kaplan-Meier curves showed a significantly higher incidence of HF events in patients having negative gradients, p=0.002 (figure 1). Conclusion PETCO2 gradient was demonstrated to be a prognostic parameter of CPET in HF patients in our study. Patients having negative gradients had worse outcomes by having more HF events. Time to first event, decompensated heart Funding Acknowledgement Type of funding source: None


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