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Assessment

%1RM ↔ Repetitions Relationship Table

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strength1rmpercentagerepsrm-continuumload-chartnsca

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DefinitionA short reference note, not a full lesson.
Definition

A reference table mapping the percentage of 1RM to the number of reps most people can complete — the bridge between estimated-1RM math, load prescription, and the RM continuum.

Detail

The number of reps achievable at a given %1RM is fairly consistent across people (it varies somewhat by exercise, training status, and muscle group). The NSCA load chart is the standard reference and underlies both estimated-1RM equations and intensity prescription (Intensity, Repetition Maximum Continuum).

% of 1RM Approx. reps possible
100% 1
95% 2
93% 3
90% 4
87% 5
85% 6
83% 7
80% 8
77% 9
75% 10
70% 11
67% 12
65% 15

Training-goal bands (general consensus):

  • Strength/power: ≥85% 1RM, ~1–6 reps.
  • Hypertrophy: ~67–85% 1RM, ~6–12 reps.
  • Muscular endurance: ≤67% 1RM, ~12+ reps.

Caveats: reps-at-%1RM are higher for large lower-body lifts than small isolation moves; trained lifters often grind more reps at a given % than novices; values past ~12 reps become unreliable for estimating 1RM.

Key facts

  • Standard NSCA mapping: 100%=1, 95%=2, 90%=4, 85%=6, 80%=8, 75%=10, 70%=11, 67%=12 reps.
  • Goal bands: strength/power ≥85% (1–6), hypertrophy 67–85% (6–12), endurance ≤67% (12+).
  • Reps-per-% are higher for big lower-body lifts; vary with training status.
  • Beyond ~12 reps the relationship gets unreliable for 1RM estimation.

Connections

Sources

Cited in text — not yet linked
NSCA's Essentials of Strength Training and Conditioning (4th ed.), training-load chart (%1RM vs. reps); ACSM's Guidelines (10th/11th ed.).

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Atlas Connections

Estimated 1RM from Submaximal RepsClosely related
Lift a submaximal load for as many strict reps as possible, then plug weight and reps into a prediction equation (Epley, Brzycki) to estimate 1RM without ever attempting a true max.
1RM (One-Repetition Maximum) TestingClosely related
The heaviest load that can be lifted once with good form through a full range — the criterion measure of dynamic muscular strength, found by a structured warm-up-and-build protocol.
Intensity
The amount of weight (resistance) lifted — also shaped by speed, reps, sets, rest interval, and workout duration.
Repetition
One complete movement of an exercise, from the start position through the full motion and back, made up of a concentric, mid-range, and eccentric phase.
Repetition Maximum (RM)
The maximum weight that can be lifted for a specific number of reps to exhaustion — e.g. a 6 RM is the load you can lift for exactly six reps.
Repetition Maximum ContinuumClosely related
Low reps with heavy loads build the most maximal strength, but muscle grows across a broad rep range (about 2–4 to 20–30+ reps) when sets are taken close to failure; the classic strength/size/endurance continuum is a rough guide only.