That’s the point! V02 Max intervals are challenging, but I feel that I definitely get stronger and faster as a result. Re: your FTP, as I explain elsewhere (Kolie Moore's FTP test protocol - #535 by DavidWms), I recently compared the TR 20 minute ramp test with a longer 43 minute (Kolie Moore) assessment. The KM test yielded an FT 20 points higher than TR Ramp test. Your mileage may vary, but for some of us 60-somethings, the VO2 max focus of the Ramp Test may not be the most effective way to measure FTP.
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