Walking Speed And Energy Expenditure

[atalanta]

I have to walk a certain distance every day. One day I do the walk very briskly and arrive at my destination in an hour. Another day, walking the same route, I take my time, amble along admiring the scenery, and arrive in an hour and a half. Do I use the same amount of energy/burn the same number of calories each time ?

[pastafreak]

According to Michael Moseley on BBC tonight, brisk is better health-wise.

http://www.bbc.co.uk/news/health-42864061

I know that when I walk briskly...getting my heart rate up...my fitbit tells me that I use more calories per minute. Not that calories should matter.

[Peter Pedant]

square of the speed

so if you walk at 2 units you will use 4 say
and at 3 units .... 9 whatevers

so the faster you walk the even better it is....