An aerobic plan is well tolerated, and the trainer wants to learn which adjustment improves capacity. Which strategy is most informative?
- AChange one variable at a time, judging each by next-day soreness
- BChange one variable at a time and track heart rate, RPE and pace
- CRaise intensity, duration and frequency together, then retest
- DRetest aerobic capacity weekly without changing the plan
Show answer and explanations
Answer
B
Changing one variable at a time while tracking heart rate, RPE and pace shows which adjustment produced the response, so later decisions are based on evidence.
A
Changing one variable is right, but soreness does not measure aerobic capacity; heart rate, RPE and pace at a given workload do.
C
Changing three variables together may improve fitness, but the retest cannot show which change was responsible.
D
Frequent testing without a planned change measures fitness but does not test any adjustment.
B
Changing one variable at a time while tracking heart rate, RPE and pace shows which adjustment produced the response, so later decisions are based on evidence.