Don’t ever complicate it. Follow these 3 principles instead.
In order to avoid losing time on your POPAT or PARE laps, you need to be proficient at the speeding up and down the stairs. There is an obvious solution: train stairs more. BUT, if you struggle with it there are more effective ways to train.
Here is what NOT to do: do laps on the stairs to exhaustion...
If you take your training seriously you need to understand the SAID principle: Specific Adaptation to Imposed Demands. This means that how you train has a direct impact on your results. You get out what you put in. The stimulus you provide creates the adaptation. It isn't just limited to the gym though. The SAID principle applies to all aspects of your physical life, including what you do in the remaining 23hrs of the day spent outside the gym.
Let's talk about what it is, how it affects your training and how you can take advantage of it to maximize your performance.