I'm looking for other options in the absence of a metabolic cart for submaximal VO2 testing. There's one method I've found (http://www.brianmac.co.uk/treadmill.htm) but I question it's validity/practicality. Has anyone done similar tests without a true exercise lab?
Hi,
I've recently been conducting Vo2 max tests without using a metabolic cart as such, however I did need a laptop and a portable gas analyser (cortex, metanalyzer 3B). It's smaller than say a shoe box and weighs around a kilogram. The treadmill I used was not connected to the laptop, so the speed and gradient did not change automatically, but changing it manually was not an issue. In regards to the testing protocol, I used the Costill/Fox protocol, however this was because I was testing 10km runners, as it has stated to be better suited for them. I believe the Bruce or Balke-Ware protocols are more widely and commonly used, so have a look into them.
I hope this helps
Hi!
At the moment, we are estimating VO2max through the one- mile test in cancer patients and controls. It is a very convenient method, since we evaluate cancer patients when they come to the hospital and the patients walk the mile on the hospital aisles, and then they receive their treatment. The six minutes test has recently been validated for cancer patients (Schmidt et al. Int J Sports Med, 2013). I hope it helps!
Hi Dan!
There are also some equations to calculate VO2max from a treadmill test taking into consideration inclination and speed. These can be found at ACSM's Guidelines for Exercise Testing and Prescription. Choice of protocol applied depends on the population evaluated. Although some error is expected, since we're talking about equations, these seems to work (practically speaking). Hope this will help!
Hi Dan
there are so many tests and equations for measuring Vo2max. but I thinks the best is using Gas analyzer. you can use normal protocols like Bruce, Balk an Astrand (based on your subjects) and perform one of them on treadmill when you use gas analyzer. note: it is not necessary using normal protocols because there are 5 indexes that show reach to Vo2 max:
95% HRmax
RER> 1.15
Burg scale> 19
steady state in O2 consumption increase after 2 minutes
change in ST section (ECG)
You can design a protocol based on your subjects fitness with 2 or 3 minutes stages and then use gradient until show the mentioned indexes
regards
Hiwa
Dear Dan,
The method of determination of VO2max during submaximal treadmill test can be found also here:
Ebbeling, C.B.; Ward, A.; Puleo, E.M.; Widrick, J.; Rippe, J.M. Development of a single-stage submaximal treadmill walking test. Med Sci Sports Exerc. 1991, 23, 966-973.
regards,
Marcin
A practical system for evaluating the effort, expecially in cancer patient , could be the combination of 6MWT and RPE scale . The HR calculated is strongly related to the moderate intensity of exercise for producing the best effects in metabolic chronic diseases . In any case the correct measurement of the V02 parameters , remains the CPT .
For clinical populations I suggest the intermittent shuttle walk test or the 6min walk test - both validated and able to predict VO2peak.
Dear Dan
This book could help you :
Physiological tests for elite athletes - Australian Sports Commission (Ed) - Human Kinetics
including chap 8 : Determination of maximal oxygen comsumption or maximal aerobic power - R Withers, C Gore, G Grass and A Haln (p 114)
Hi Dan,
if you are not particularly attached to the treadmill, you could consider the 6-min stationery bike Astrand test. You need to purchase a bike + software (Monarch) and use HR monitor (most brands compatible).
Hope this helps.
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