วิธีการคำนวณ Max Heart Rate
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Maximum heart rate (HRmax) declines with age and sets the ceiling for training zones used to optimise workouts across different intensity levels.
คำแนะนำทีละขั้นตอน
- 1Fox formula: HRmax = 220 − age (most used)
- 2Tanaka formula: 208 − 0.7 × age (more accurate ≥ 40)
- 3Individual HRmax varies ±10–20 bpm from formula
- 4Training zones are % ranges of HRmax
ตัวอย่างที่มีคำตอบ
อินพุต
Age 42, Fox formula
ผลลัพธ์
HRmax = 178 bpm; Zone 2 (60–70%): 107–125 bpm
คำถามที่พบบ่อย
Is max heart rate the same for everyone my age?
No. Estimates are averages; individual variation ±10–20 bpm. Athletes have higher true max; sedentary may have lower. Genetic factors, fitness level matter. Direct measurement (stress test) most accurate.
Should I exercise at max HR?
No. Dangerous and unnecessary. Training zones: 50–70% max = moderate (cardio), 70–85% = vigorous (intervals). Max HR approach is asymptotic, rarely sustainable.
Does age-predicted max matter if I'm fit?
Less so if you monitor perceived exertion / power output. Fit athletes may exceed age-predicted max. Use max HR for workout zone guidance, not hard rule.
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