HR data from a chest strap is far more accurate when rowing.Fitbit currently imports rowing workouts from the Concept2 logbook but replaces the heart rate with data from the user's Fitbit device. If the Fitbit device is not worn during the workout, HR data is omitted altogether. If a chest strap is worth, that data should be imported.
Fitbit incorrectly imports workout data as "below zones" or "fat burn" during high-intensity rowing workouts. My chest strap will show a consistent rise in HR (correlating to RPE), but my Versa 3 will show a sudden, persistent plummet in HR part way into a workout. This is frustrating since better data is available and Fitbit just won't use it.
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