วิธีการคำนวณ One Rep Max Calculator
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One Rep Max (1RM) is the maximum weight you can lift for one complete repetition of an exercise. It is used to set training loads as percentages of 1RM. Direct 1RM testing is risky for beginners — submaximal prediction formulas estimate it from a set you can perform safely.
คำแนะนำทีละขั้นตอน
- 1Lift a weight for as many reps as possible (ideally 3–10 reps)
- 2Apply prediction formula — Brzycki, Epley, or Lander
- 3Average the results for a more reliable estimate
- 4Set training weights as percentages of estimated 1RM
ตัวอย่างที่มีคำตอบ
อินพุต
100 kg for 5 reps
ผลลัพธ์
~116 kg 1RM
Brzycki: 100 × 36/(37-5) = 112.5 kg
อินพุต
60 kg for 10 reps
ผลลัพธ์
~80 kg 1RM
Epley: 60 × (1 + 10/30) = 80 kg