Sur cette page
Load percentages (% of 1RM)
Convert your 1RM into concrete loads for each session, depending on your training goal.
How to read percentages
Once your 1RM is known, the intensity of a session is expressed as a percentage of this 1RM. 95% of 1RM = you can do 2 repetitions max, this is the intensity of maximum strength work. 70% of 1RM = 10-12 repetitions, classic intensity for hypertrophy.
Intensity zones by objective
Maximum strength (85-100% of 1RM)
1-5 reps, 4-6 sets, 3-5 min recovery. Mainly solicits nervous strength (recruitment, intramuscular coordination). Little hypertrophy. Programming: powerlifting, weightlifting.
Hypertrophy (65-80% of 1RM)
6-12 reps, 3-5 sets, 60-90 sec recovery. Cumulative volume is key. This is the classic “bodybuilding” zone for developing muscle mass.
Muscular endurance (50-65% of 1RM)
15-25 reps, 2-4 sets, 30-60 sec recovery. Improves resistance to muscle fatigue. Useful in cross-training, physical prep, rehabilitation sessions.
How to adjust in practice
The percentage is a benchmark, not a strict rule. If you load 80% of 1RM but only hold 5 reps instead of 8, your actual 1RM is less than estimated. Conversely, if you do 12 easily, retest or revise your 1RM upwards.
RPE and RIR: useful additions
The RPE (Rate of Perceived Exertion, 1-10) and RIR (Reps In Reserve) methods complete the percentages: they adjust for the fatigue of the day. RIR 2 = you could have done 2 more reps. Many modern programs (Renaissance Periodization, Helms) mix % and RIR.
Questions fréquentes
Three possible causes: your 1RM is overestimated (retest), you are tired (reduce the load by 5-10%), or the technique has drifted. Better to lower the load than sacrifice technique.
No. Failure in each set creates excessive fatigue and limits progress. Working with 1-3 reps in reserve (RIR 1-3) on the majority of sets is more productive in the long term.
Start in hypertrophy (65-75%) for 6-12 weeks. It is the intensity that is best tolerated technically and is the most formative. Maximum strength (85%+) will come next.
No. The actual accuracy of an estimated 1RM is ±5%. Rounding up to 2.5kg or 5kg is perfectly acceptable.