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      11-09-2020, 12:24 PM   #2651
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Quote:
Originally Posted by chassis View Post
Rode 20 miles today in the nice weather, felt great.

Fitbit tells me that calories burned per hour is greater for walking and swimming, compared with biking. Seems strange because average heart rate for each activity is roughly the same.

What do people think about Fitbit's calorie burn data?
All data should be dependent on HR. Type of cardio shouldn't play a major factor. Calories burned are calories burned. If you heart rate is greater walking & swimming compared to biking then that would make sense. Although I'd assume your HR would be greater when biking then walking.

Formulas for Determination of Calorie Burn if VO2max is Unknown
Male: ((-55.0969 + (0.6309 x HR) + (0.1988 x W) + (0.2017 x A))/4.184) x 60 x T

Female: ((-20.4022 + (0.4472 x HR) - (0.1263 x W) + (0.074 x A))/4.184) x 60 x T
where

HR = Heart rate (in beats/minute)

W = Weight (in kilograms)

A = Age (in years)

T = Exercise duration time (in hours)

Formulas for Determination of Calorie Burn if VO2max is Known
Male: ((-95.7735 + (0.634 x HR) + (0.404 x VO2max) + (0.394 x W) + (0.271 x A))/4.184) x 60 x T

Female: ((-59.3954 + (0.45 x HR) + (0.380 x VO2max) + (0.103 x W) + (0.274 x A))/4.184) x 60 x T
where

HR = Heart rate (in beats/minute)

VO2max = Maximal oxygen consumption (in mL•kg-1•min-1)

W = Weight (in kilograms)

A = Age (in years)

T = Exercise duration time (in hours)
Appreciate 1
chassis6376.50