Search found 9 matches

by pone
Wed Apr 01, 2015 12:19 am
Forum: Exercise Science
Topic: Exercise Physiology Questions
Replies: 3
Views: 6813

Re: Exercise Physiology Questions

What you are referring to in your question is the RER (respiratory exchange ratio). The equation is R=VCO2/VO2. That is the ratio of carbon dioxide produced to the oxygen consumed, you were correct that with 100% utilization of fats it will produce a number of .7 that is due to the chemical equatio...
by pone
Sat Mar 14, 2015 2:39 pm
Forum: Exercise Science
Topic: Cheapest VO2Max Tester?
Replies: 8
Views: 13620

Re: Cheapest VO2Max Tester?

As one example see Figure 1 in this Japanese population study: at URL jap DOT physiology DOT org/content/94/6/2406 In Figure 1, the variability at a given age between VO2Max results is enormous. Figure 1 The graph defines that as endurance athletes age there is a greater decline in VO2 max than in ...
by pone
Fri Mar 13, 2015 9:54 am
Forum: Exercise Science
Topic: Cheapest VO2Max Tester?
Replies: 8
Views: 13620

Re: Cheapest VO2Max Tester?

I'd love to see the graph. It needs to be specific and not vague, as you have been. I have a short disposition for those who are vague and don't provide specific research that substantiate their position/clam. So how am I supposed to show you a graph when this site doesn't allow people to publish U...
by pone
Fri Mar 13, 2015 9:23 am
Forum: Exercise Science
Topic: Cheapest VO2Max Tester?
Replies: 8
Views: 13620

Re: Cheapest VO2Max Tester?

Kenny, the average method works for almost no one. I want to publish a graph from a population study, but this site doesn't let me publish the URL. First, at the same age, VO2Max can vary from 100 watts of workload to 400. Those people have nothing in common. The general guidelines give both of thos...
by pone
Thu Mar 12, 2015 8:49 pm
Forum: Exercise Science
Topic: Cheapest VO2Max Tester?
Replies: 8
Views: 13620

Re: Cheapest VO2Max Tester?

Use the fitness tests on this site. The 1.5 mile run is the easiest test if you have a large group to test. Why do you need a more precise measurement that that? It's a long story, but the person who needs the testing has a metabolic disease that compromises aerobic metabolism. Having an extremely ...
by pone
Wed Mar 11, 2015 11:33 pm
Forum: Exercise Science
Topic: Cheapest VO2Max Tester?
Replies: 8
Views: 13620

Cheapest VO2Max Tester?

What is the cheapest way that I can get a VO2Max tester? I understand that there are products that shrink wrap an entire system together, but if you want CO2 measurements (I do) these often cost $10K+. I am totally okay with having two devices that only measure O2 and CO2 and don't provide any fancy...
by pone
Wed Mar 11, 2015 9:08 pm
Forum: Exercise Science
Topic: Wireless Pulse Monitor for Running
Replies: 3
Views: 7194

Re: Wireless Pulse Monitor for Running

Most watch style pulse meters work by measuring light reflection of your wrist. Ear lobe systems also use this method. It is an unreliable method, especially outdorrs. A system that uses a chest strap is more reliable but less comfortable. It's a tradeoff. On Google, search Masimo Mightysat, and th...
by pone
Wed Mar 11, 2015 4:40 am
Forum: Exercise Science
Topic: Wireless Pulse Monitor for Running
Replies: 3
Views: 7194

Wireless Pulse Monitor for Running

I have one of those Chinese pulse monitor / oximeter wrist watches, and it works well at rest. The problem is as soon as you start walking it loses the pulse and to regain this during exercise requires you to stop, sometimes for a full minute. Does anyone make a reliable pulse monitor that you can w...
by pone
Mon Mar 09, 2015 1:12 am
Forum: Exercise Science
Topic: Exercise Physiology Questions
Replies: 3
Views: 6813

Exercise Physiology Questions

What is the best forum on the Internet for hardcore exercise physiology questions? One question I have is regarding how to interpret CO2 to O2 ratios in VO2Max testing. My understanding is that aerobic metabolism that uses 100% fat will give CO2 to O2 around 70%. Aerobic metabolism that uses 100% gl...