Breathing tells only part of the story

Going up may feel more demanding for breathing. Going down can still require substantial control as muscles resist gravity and you move onto the next step. A less breathless task is not necessarily easier in every way.

Step height, depth, lighting, footwear, and carrying objects also change the situation.

What makes a comparison useful?

ObservationContext worth recording
Need for a handrailWhich side and how much support
PausesBreathing, discomfort, uncertainty, or another reason
Step patternAlternating feet or bringing both feet to each step

These details are more informative than a single label such as “bad at stairs.” They also help explain a difficulty to a clinician or exercise professional.

A rail is a useful tool

Using support does not invalidate the activity. Carrying everything in one trip is not a necessary fitness test, especially if it prevents use of the rail or blocks your view.

If stair practice is part of a program, its setup should fit current ability. New weakness, significant pain, or a recent fall calls for assessment rather than trying to solve the problem by repeatedly taking the stairs faster.