Descending duration ‘ladder’ VO2 Max intervals for more benefit? Start long intervals, finish short

[https://www.outsideonline.com/health/training-performance/ladders-interval-workouts-research/?fbclid=IwAR37sbspl7wPKB5uFvo_F58he_MzdHeA3mStdshJ5kHXQy6pi55P0Vv771o_aem_AeSjd4M-3JPAj38dQJHoIxGW7Q6VNtrPFnLvS-_sQmzfMcl93ad6p0Z8L_pd03ykHIM](https://www.outsideonline.com/health/training-performance/ladders-interval-workouts-research/?fbclid=IwAR37sbspl7wPKB5uFvo_F58he_MzdHeA3mStdshJ5kHXQy6pi55P0Vv771o_aem_AeSjd4M-3JPAj38dQJHoIxGW7Q6VNtrPFnLvS-_sQmzfMcl93ad6p0Z8L_pd03ykHIM)
Interesting article on starting vo2 efforts at longer duration and then shortening them (decending ladder).
Are there any TR bike workouts like this? Or has anyone created a custom one?

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You mean like Marroquin with ascending-intensity/descending-duration?
Select Workouts → VO2max → Mixed Intervals. There are different types, select kind you like and then alternatives should provide list of similar profile workouts.

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Sounds like the known effective way to train anaerobic capacity.
Go max until you can barely move.

Their short duration prescription is wrong imo for training anc. of course shorter intervals wont make you as tired if they arent hard enough.