Pre-solved maximum heart rate for age 43. Tanaka (2001): 178 bpm | Fox (220-age): 177 bpm | Gellish (2007): 177 bpm. Training zones (Tanaka): Z1 Warm-up 89-107 bpm, Z2 Fat Burn 107-125 bpm, Z3 Aerobic 125-142 bpm, Z4 Threshold 142-160 bpm, Z5 VO2 Max 160-178 bpm. AHA moderate intensity: 89-125 bpm. ..
ESTIMATED MAX HEART RATE — AGE 43
178
Tanaka (2001)
Most accurate
208 − 0.7 × age
177
Fox (220−age)
Classic formula
220 − age
177
Gellish (2007)
Validated
207 − 0.7 × age
Max HR declines ~0.7 bpm/year · AHA moderate: 89–125 bpm · Vigorous: 125–151 bpm
5 TRAINING ZONES — AGE 43 (Tanaka HRmax 178 bpm)
| Zone | % | BPM Range | Benefit |
|---|---|---|---|
| Z1 Warm-up | 50-60% | 89–107 | Recovery, very easy |
| Z2 Fat Burn | 60-70% | 107–125 | Fat oxidation, aerobic base |
| Z3 Aerobic | 70-80% | 125–142 | Cardiovascular fitness |
| Z4 Threshold | 80-90% | 142–160 | Lactate threshold, race pace |
| Z5 VO2 Max | 90-100% | 160–178 | Max cardiac output |
| AHA Moderate | 50–70% | 89–125 | 150 min/week recommended |
| AHA Vigorous | 70–85% | 125–151 | 75 min/week recommended |
ZONE BARS — HRmax 178 bpm
FORMULA COMPARISON — AGE 43
Maximum heart rate declines ~0.7 bpm per year after age 20. At age 43, the three validated formulas give 178 bpm (Tanaka), 177 bpm (Fox), and 177 bpm (Gellish). The Tanaka formula is recommended as the most accurate.
What is the maximum heart rate for a 43-year-old?
For a 43-year-old, the estimated maximum heart rate (HRmax) is:\n\nTanaka (2001) — recommended: 178 bpm\nFormula: 208 − (0.7 × 43) = 178 bpm\n\nFox (1971) — classic: 177 bpm\nFormula: 220 − 43 = 177 bpm\n\nGellish (2007) — validated: 177 bpm\nFormula: 207 − (0.7 × 43) = 177 bpm\n\nTraining zones at age 43 (using Tanaka HRmax 178 bpm):\nZ1 Warm-up (50-60%): 89-107 bpm\nZ2 Fat Burn (60-70%): 107-125 bpm\nZ3 Aerobic (70-80%): 125-142 bpm\nZ4 Threshold (80-90%): 142-160 bpm\nZ5 VO2 Max (90-100%): 160-178 bpm\n\nAHA moderate exercise target (50-70%): 89-125 bpm\nAHA vigorous exercise target (70-85%): 125-151 bpm\n\nNote: These are population averages. Your actual HRmax may vary by ±10-12 bpm. The only accurate way to measure HRmax is via a maximal graded exercise test under medical supervision.
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Max heart rate age 43 · Tanaka: 178 bpm · Fox: 177 bpm · Gellish: 177 bpm · Sources: Tanaka et al. (2001), Fox (1971), Gellish et al. (2007)