Amazfit Balance 3 OTA 4 optimized the Running Lactate Threshold algorithm, while OTA 6 mainly improved the VO₂ max algorithm. Use the new data as a reference for adjusting intensity—not as a signal that you must run faster.
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Apple Health is useful for tracking running trends, but Apple Watch and treadmill distance readings may differ because they rely on different estimation methods. This article explains how to choose Indoor Run, calibrate the watch, interpret heart rate and VO₂ max, and avoid treating Insights as a medical diagnosis.