Base: using my current understanding from SolarEnergy has said, is anything. If someone wants to train just 25s all out efforts, they can and will build a base. I don't think this is what he meant, just what resulted from thinking about his previous statements.
You build on a base of what you have already accomplished. If you have never trained, or have become untrained from a long break, then you have no base. Doing anything will build a base. Since the quality of your base depends on your goals, there isn't a good general way to build a base.
Aerobic Base: I do not believe you ever need to train at an aerobic level to build more aerobic base. All training efforts end up using the aerobic system. If you only ever do 2 second sprints, you still work your aerobic system. Assume you are working directly from CP, ATP or lactic acid fermentation with 0% of your energy coming from aerobic sources. Upon completion of this energy expenditure, the free energy used will need to be restored, and this requires the aerobic cycle. Train however you want, the aerobic system will always end up getting used. The harder you work, the harder it will be used.
Base: using my current understanding from SolarEnergy has said, is anything. If someone wants to train just 25s all out efforts, they can and will build a base. I don't think this is what he meant, just what resulted from thinking about his previous statements.
You build on a base of what you have already accomplished. If you have never trained, or have become untrained from a long break, then you have no base. Doing anything will build a base. Since the quality of your base depends on your goals, there isn't a good general way to build a base.
Aerobic Base: I do not believe you ever need to train at an aerobic level to build more aerobic base. All training efforts end up using the aerobic system. If you only ever do 2 second sprints, you still work your aerobic system. Assume you are working directly from CP, ATP or lactic acid fermentation with 0% of your energy coming from aerobic sources. Upon completion of this energy expenditure, the free energy used will need to be restored, and this requires the aerobic cycle. Train however you want, the aerobic system will always end up getting used. The harder you work, the harder it will be used.