Hi Karen - hope I can clairfy
It was the day before, believe you me, I would not forget![]()
3 x 20 L4....means this...
3 times obviously
20 minutes each effort (with 5 minutes of easy spinning, ie....going down the hill, between each 'rep')
L4 is a power zone which ranges from 91-105% of the power I can produce for one hour. Doing intervals @ L4 is a great way to increase your sustainable power. In simple terms, it means you go faster, for longer. As an aside it also raises your Lactate Threshold, letting you work at a higher percentage of your aerobic capacity.
LT, is as you guessed heart rate, but I no longer train by heart rate - I observe it more for cross reference and analysis.
If you have any more questions about power training, just ask and I'll try to provide a semi-intelligent answer - not easy, but I'll do my best![]()





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