03-11-2016 22:56
03-11-2016 22:56
03-12-2016 01:42
03-12-2016 01:42
Step count is a main contributor in the calculation of calories so, yes, you will be getting some extra calories as a result of these spurious steps.
I wouldn't expect it to be a major factor though on your daily total and it will be consistent so if you focus on trends more than detail then it shouldn't be a problem
This article discusses it in more detail and explains what we can do to minimise it:
http://help.fitbit.com/articles/en_US/Help_article/How-accurate-are-Fitbit-trackers/