Incorrect calories burn while swimming

Hello,

I have a question regarding calories burn while swimming in fr245. Does this calculate correctly for you guys? I'm 70+ with max HR 148. Today I was swimming with average HR 105, that is 3rd zone for me, for 30 minutes and I got only 60 active calories. While I'm cycling with similar average HR I get around 200-250 per 0.5h. anyone know how to fix it or should I send it to Garmin support?

  • Today I have 43 minutes of which 8:32 1 zone , 21:35 2,12:27 3 gave 252 calories (50 at rest 202 at active), keep in mind that calories are not taken into account for drills and rests, maybe is the reason.

    The last column in the intervals shows calories for each, look.

    It seems that the main factor influencing calorie calculation is not heart rate, but pace.