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How do you work out rep times from a percentage of your PB?

Divide your PB by the percentage: 6 × 150m at 95% of a 16.20 PB is 16.20 ÷ 0.95 = 17.05 a rep. For jumps and throws, multiply instead: 90% of a 7.02 long jump is 6.32.

Targets from a 16.20 150m PB
EffortTargetBand
100%16.20Maximal
95%17.05Maximal
93%17.42Intensive
90%18.00Intensive
85%19.06Extensive
75%21.60Extensive
70%23.14Tempo

Percent of speed, not of time

When a coach writes @ 95% on a sprint rep, the percentage is a share of top speed. Running 5% slower makes the time longer by a factor of 1 ÷ 0.95, not 5% of the time, so the target is the PB divided by 0.95. Multiplying the time by 1.05 gives a slightly different, faster number.

Bands

Coaches group efforts into bands: under 75% is tempo, 75 to 89% extensive, 90 to 94% intensive, and 95% and above maximal. The same 150m PB gives 21.60 at 75% and 17.42 at 93%.