That has to be a formulated vo2 max. That can not be a machine measured vo2 max because you can not exceed you maximum intake of 100 percent. Since I can't see any gym testing on a machine, Direct testing is the "only" way to measure vo2 max. looking at the link you posted they set the resistance to 170 percent of the effort you normally use to reach your 100 percent exhaustion level. But understand 100 percent vo2 max is the point where you can no longer exercise and vomiting often starts. From the Sports medicine site I checked "Measuring VO2 max accurately requires an all-out effort (usually on a treadmill or bicycle) performed under a strict protocol in a sports performance lab."

As you may know the USADA and the UCI have been working on tests to measure the vo2 max of riders and anyone that ever tested at 170 percent would be bounced for EPO. But I agree if someone could suck in 170 percent of the oxygen necessary to continue racing, running or exercising that would be difficult. Sounds like some people estimate vo2 max like others do calorie counts.