Get step count of the last minute (not 10 minutes) to record weekly moderate and vigorous intensity aerobic physical activity?

Thanks everyone!

I guess one could also make the assumption that at times with lots of app switching you probably are not doing a lot of moving around. So it probably wouldn't impact the statistics too much doing without retaining info across resets/loads.

Yes, that's probably true, so to save CPU and battery usage, I'll probably ignore App switches and not save data to storage, and assume that no significant activity was done during that time.