daveryanwyoming said:The guidelines are simple, the application to your specific situation is less simple and why coaches are worth what they charge. But basically you want to:
- Get enough quality work in during both workouts to justify the twice a day routine
- Recover well enough from the morning session to be able to maintain quality for the evening session (post exercise refueling during the critical half hour is key here)
- Recover well enough and quickly enough from the evening session to carry out your planned workout(s) the following day (again, critical half hour glycogen replenishment is key).
- Lay out a daily, weekly and longer term plan that targets specific fitness goals.
- Schedule your morning vs. evening sessions in a way that lets you stick to your plan and target your specific goals. A second session that degrades into junk miles is of little training value and may reduce the quality of subsequent sessions.
Anyway when I do doubles I tend to target the harder workout in the morning and the easier in the evening. So it might be VO2 Max work in five minute repeats in the AM and L4 or SST work in 20 to 30 minute blocks in the evening. Or the evening might be an hour of Tempo/low SST riding to target solid sustainable metabolic fitness without being too tough mentally or physically. But it depends a lot on what the following day looks like and where I am in my season.
Don't lose sight of the big picture and attempt to load up too many double or other back to back intense sessions and burn out or drop other workouts down into junk mileage territory because you're too tired or mentally fried from intense work.
Laying out a good schedule with or without doubles is part science and part art and there's no "one size fits all" answer. Again, it's where a good coach can be worth their weight in gold. If you go the self coached route then at least pay attention to your larger goals and pay close attention to your ability to recover from double workout sessions to make sure they help more than they hurt.
Good luck,
-Dave
Just to add to dave's comments-
I would typically only prescribe 2 a day when a rider's schedule means they don't have sufficient time in any single session to enable the total desired training to happen for the week/block. That is not uncommon for souls with many other time commitments.
Sometimes it comes about for other reasons, such as when ride venues are available (like a velodrome only open in the evening).
Nevertheless, it may be better to look at the intensity of a ride given limited ride windows than to simply add durarion with a 2nd session but it does depend at what stage of the training cycle you are in as to what end of the volume-intensity mix is right.
To make it easy - if riding the extra session inhibits your ability to train well in other sessions (on the following days and weeks), then there's your answer.