Tag Archives: base training

The Debate on Tempo Runs and the Lactate Threshold

There are two schools of thought concerning tempo runs, aka extended runs done at or above your lactate threshold, the point at which your muscles produce too much lactic acid for your muscles to absorb + clear, causing your muscles to feel weary (among other tired effects).

As your fitness improves, the pace at which you hit your lactate threshold should get faster. This can allow you to run farther at faster paces. For any race distance beyond a sprint this is of course very important.

The traditional school of thought is that tempo running at or above the threshold strengthens your muscles’ ability to clear excess lactic acid, and therefore your threshold will increase over time.

Another school of thought is that a lot of aerobic running at a sub-threshold pace over time will increase that threshold, plus higher intensity running at shorter bursts will improve your running economy and in turn that threshold.

Who’s right? To some extent both camps are right. The question is which camp’s approach is most beneficial.

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Volume: The key to base training

Most training plans, whether or not they map it out, follow at least three general phases.

  1. There is a base training phase, where you establish the volume and habits you will generally follow throughout the training cycle.
  2. There is a fundamental phase, where you develop speed and aerobic endurance.
  3. And then there is the final sharpening phase, where you work more specifically on preparing for your goal race as well as taper to heal up in the days/weeks before that race.

(Some split that 2nd phase into separate development phases, one where the 1st part is speedwork-centered, and the 2nd is built around tempo and endurance with that tempo.)

Most people follow a pre-written training plan, which usually starts with a minimal weekly mileage that gradually builds throughout the plan. The base training may establish an initial pattern of speed/tempo workouts, but the volume typically is low and increases during the life of the training plan.

I do think we get it backwards.

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