this is an exercise phys problem. Caloric burn is related to oxygen consumption. Running has a higher Vo2 than walking, but you get "vertical vo2" so it doesn't surprise me that it's equal.

I've been running with the treadmill at an incline because I reason that it's slightly less stress on my skeleton. This morning I varied it between 2.5% and 0.5%, it feels better to me.

If I'm deluding myself that this is less pounding, please tell me

I've read or learned somewhere that generally you should have the treadmill at 1% incline instead of flat. The flat causes some imbalance in the way you are standing I guess.

Judy, stop swearing on the website.

calculations come from these formulae

5k @ 6 mph (I'm rounding a bit)
6 mph * 26.8 = 160.8 m/min
Running vo2 = (160.8)(0.1) + 3.5 = 35.7 ml/kg/min

2 mi @ 3.5 mph
3.5 mph * 26.8 = 94.6 m/min
Walking vo2 = (94.6)(0.1) + 3.5 = 12.96
BUT you also get vertical vo2
Vertical vo2 = (94.6)(1.8)(0.1)(0.5) = 8.5
Add them is about equal to 21.5 ml/kg/min

Okay... I lied... you're working at a lower Vo2. In order to figure out caloric consumption, I would need your body weight, and hers. Assuming that you both entered that into the treadmill (which "knows" these formulae) then saying that her run and your walk burned the same number of calories would be accurate. Calorie consumption is 5 kcal/L of oxygen/min, but you need to know body weight. The equation for that is on the link I've posted above.

The important part, 2 miles means you get one cookie, right?

[edited for math errors]

I would've eaten a cookie even if I hadn't walked. :-)

I'd guess that mine, (Vo2 max) compared to yours and the rest of the members of EA is extremely low, but then again, I'm not sure. I was basically walking at the fastest pace my knee will allow and it was no more of an effort than sitting in front of the television. I felt that if I could run, it'd be a breeze running along at that incline at twice the speed. I'll never know though.

I didn't enter my weight into the treadmill or anything like that -- just used the setting that had been programmed before me. It was probably set for the average American male -- 380 pounds.

The setting that caught my attention was METS. Had to look it up and familiarize myself with it when I got home. At 3.5 mph at 11% incline it registered 9.4 METS. So, in simple terms, it means that I was using 9.4 times the energy I would have been using if instead I'd been performing normal daily activities, such as washing dishes etc. I think that's what it means. Correct me if I'm wrong.

METS stands for Metabolic Equivalent of Tasks, and it compares the metabolic rate of an average person while resting to the metabolic rate of the average person performing that particular task.

1 MET = 3.5 ml/kg/min O2, which you'll note is what we add in for a resting value on those Vo2 calculations.

Suzanne,

After 2 years of fussing with shoes and hurting feet, I finally went to see a podiatrist and he said 'what took you so long, this is my job', and he promptly put cork heel inserts in my shoes, which immediately felt better. And ultimately I got orthodics through him and I don't even notice my feet any more. So, if you think shoe/foot considerations result, for you, in knee issues, maybe this path would work for you too. The end.

Great advice. :)

Before I tuck into my turn, I see the cross on the wall for a split second, and the next thing I see is the black line as I push off and streamline over it. On the first breath I might see the flags behind me. Swim faster. See the cross again, tuck into the next turn.

That is all I saw this morning, the two crosses that I rocketed between.

3m dive
600 w/u
2 x 200 build
3 x 400 on 5:30 ---4:58, 4:52, 4:48
2 x 200 easy
200 c/d back
more 3m and 1m dives

late morning, 2000 easy. kicking and pulling mostly.

while I was doing math I was curious what % of my vo2 max I was working at this morning. I'm taking average pace and average incline -

6.95 mph * 26.8 = 186.26 m/min
186.26 * 0.2 + 3.5 = 40.3 ml/kg/min
186.26 * 1.8 * 0.015 * 0.5 = 2.515 ml/kg/min
40.3 + 2.5 = 42.8 ml/kg/min = Alyie Vo2

My vo2 max is somewhere around 64 ml/kg/min, so 100(42.8/64) = 67%

You go girl! Now... off to do 100 crunches.

is the time for the second class on Tue and Thur