Originally Posted by
gregf83
1 min isn't long enough for a VO2Max interval which is typically in the 4-6 min range. Short 30-60S intervals are useful for improving your anaerobic work capacity. Can be useful for longer term energy systems if you keep the rest interval short, i.e. 30S on 30S off.
Perhaps I've gained a misguided understanding of what a VO2max interval is. Is this 4-6 min. at a specific target % over FTP? I should point out that I don't have a power meter to actually know where I'm at, so my interval work is all by feel (other than HR, which isn't a great indicator).