Normal Heart Rate for 8-Year-Olds: Resting and Exercise Targets

Resting Heart Rate (RHR): 70–110 bpm (average).

Maximum Heart Rate (est.): 220 – age = 212 bpm.

Target Zones During Exercise

• Light (50–60%): 106–127 bpm
• Moderate (60–70%): 128–154 bpm
• Vigorous (70–85%): 155–180 bpm

Note: Individual variation is normal. Fitness, medications, anxiety, temperature affect rate. Persistent resting tachycardia (>120) or symptomatic bradycardia (<60) warrants pediatric cardiology evaluation.