Pushing a stroller question

I do the same thing pushing my 3 and 5 year old in a stroller. I know it is strength training in my arms as well as cardio but I never add it to my exercise as I wouldn't know what to call it.

I also have twins (mine are 3) and when they are both in the stroller it is about 70-75 pounds. I normally just log as cardio but I think there has to be some strength training in there also. I know when I have been pushing them my abs, upper arms, and shoulders burn by the time I am done. I also don't understand how to log calories with pushing/pulling stroller can be less calories than just walking. I know I can push them farther now than I used to be able to so I just take that as personal success

While out walking my twins this morning I got to wondering if pushing the stroller would be considered just cardio or strength training too. The stroller and babies together weight about 100 lbs so it is a lot of work to push that around.

Any thoughts? It won't really make a difference, I'm just wondering.

It's cardio mostly, unless you decide to push them uphill. Strength training requires a resistance hard enough to cause lactic acid build up and causes you to pause to rest. Walking usually doesn't do that unless there is significant resistance.