Doc, I have done the TR Ramp Test several times. Despite hard workouts, I had difficulty getting a bump in FTP. I did an alternative based on the Kolie Moore protocol which is a longer but lower wattage test. I tried KM inside and then outside, resulting in a 20 watt bump higher than the TR Ramp Test. I think the Ramp Test may not accurately measure FTP in senior cyclists who are VO2 limited. More about my experience here: Kolie Moore's FTP test protocol - #535 by DavidWms