What would a normal human be able to do when having lung cancer?

Which of the follow is good way to gauge musculature endurance?

Look at the graph about the barriers to working out. what would 20 percent of the population report as a barrier for working out? inability to devote thirty minutes a day to working out lack of interest with creating a detailed workout schedule not having enough money to pay for yearly gym membership living in a community that does not have parks or a gym facility

In this model, what do p, s, and a bases represent?