Utility of Equations to Estimate Peak Oxygen Uptake and Work Rate From a 6-Minute Walk Test in Patients With COPD in a Clinical Setting

Abstract

There is poor to moderate agreement between measured peak (Equation is included in full-text article.)o2 and peak work rate and estimations from equations that use 6MWT distance, and the use of the estimated values for prescription of aerobic exercise intensity would result in large error. Equations estimating peak (Equation is included in full-text article.)o2 and peak work rate are of low utility for prescribing exercise intensity in pulmonary rehabilitation programs.

The 6-minute walk-test in type 2 diabetics predicts to some extent maximal aerobic capacity but not its training-induced improvement

“…This study shows that, as already reported other sedentary populations [5][6][7][8] This study is part of a wider study investigating the effects of exercise training at the level of VT 1 and one of the fi ndings was that VO 2max declined by 16.4%, over 1 year without training while this decline was prevented by training. Although it is well accepted that diabetes is a progressive disease [23], such a rapid decline highlights the "vicious circle" of a sedentary lifestyle in chronic diseases [24], and characterized by rapid deterioration even at the stage of disease where patients are comparatively healthy.…”

“…Since it has been widely studied and validated in chronic pathologies associated to sedentary lifestyles [5][6][7][8], it appears to be logically more and more employed in diabetes studies [9]. However, the basis for this use was until recently poorly documented.…”

“…By contrast the measurement of VO 2max requires a maximal exercise-test which cannot be performed everywhere and requires a specifi c and expensive material. Therefore, reliable surrogates providing an evaluation of cardiorespiratory fi tness are useful for a comprehensive assessment of an individual's health, and 6MWT is surely one of the most attractive because it is simple to realize and costless [1,[5][6][7][8]. If it were also a good refl ect of health improvement after treatment its interest would be even greater but this remains unknown for diabetics, since in this disease there are several factors of disability (eg, neuropathy, retinopathy).…”

Effect of high-flow nasal therapy during acute aerobic exercise in patients with chronic obstructive pulmonary disease after exacerbation: protocol for a randomised, controlled, cross-over trial

“…This estimation of maximal power is associated with an average error of 22%±18%. 15 To compensate for the variability of this estimation, the intensity of the initial CWRET will be adjusted if the TLim is less than 5 min or more than 15 min, and the intensity of work will be increased or decreased by 20%. Initially, the aim of the test will be to accustom the patient to the instructions.…”

Effects of high-intensity interval training on vascular function in breast cancer survivors undergoing anthracycline chemotherapy: design of a pilot study

“…All participants complete a baseline cardiorespiratory fitness test (week 0) using a maximal effort cycling protocol to measure VO 2 max, used in order to prescribe the relative exercise intensity. 48 49 The specific protocol comprises a 10W increase in workload every 1 min, starting at 40W. This testing is performed with standard equipment for indirect calorimetry (Parvo Medics, Salt Lake City, Utah) in an incremental protocol until exhaustion (respiratory exchange ratio >1.10, heart rate ±10/min predicted MHR, ratings of perceived exertion 17; in 6–20 ratings) on a recumbent bike.…”