Bike on a Trainer: Calories not correct

[MTGatorGirl]

It is winter and my outdoor bike is on a trainer. I am doing HIIT using Spinerval Cycling DVDs for 45-50 minutes. Yet, Versa only shows I burn 250 calories. 

I am using the Spinning feature on the Versa since the Bike feature only seems to work outdoors with GPS.

Can anyway tell me why the calories burned are not registering more?

Thanks,

MTGatorGirl

[Bill_k]

I do 50 minutes of stationery bike every day and burn 300 calories so your numbers aren't far off.

[MTGatorGirl]

Thanks, Bill. It just seems it should be a little more given high intensity intervals. 

[Bill_k]

It depends how high your heart rate gets during your cycling. Maybe go into the fitbit app and check out the chart.