I love playing with data. This is a self-indulgent number-crunching post with graphs. I’ve just been looking at some older Excel files from a while ago, and was really pleased to see how they show that doing all the running – even though it has been very much on/off over the last few months – has improved my health.
Doing stair circuits is pretty tedious, but a good way to do some exercise when you don’t want anyone to see you, because you’re embarrassed about how unfit you are. I started doing ten minutes of stair circuits four years ago, when I was working more or less full-time and on my feet all day, but doing little other exercise. One circuit is thirteen steps up, then a corner-step, across the landing, up one more and then all the way back down. I used my phone to time each circuit. The novelty rapidly wore off though, and I went back to doing very little exercise.
A year or so later, and I was working part-time, sitting down all the time, so I had another go. The difference in my fitness showed. After five circuits, I couldn’t manage to get up and down in less than 30 seconds. That persuaded me to practise, and a month later it had improved quite a bit.
Then I forgot all about it again. A year ago, I started running with the c25k programme, mixed in with yoga, more walking and Tai Chi. I thought I’d see how I’d do with the stair circuits again, and was pleasantly surprised to see how much faster I was. (28 circuits in ten minutes instead of about 20).
I also found a ‘three minute step test’ a while ago on the sparkpeople website. I signed up to track my diet, after I was diagnosed as coeliac, because the blood-tests also showed that I was low in iron and folate, and they are quite difficult to get enough of, if you don’t eat fortified cereals/bread. (I ended up taking supplements as I struggled to get enough of them from my diet.) I knew I wasn’t very fit, so I decided to use some of the sparkpeople trackers, so I could see if I got better at anything.
The step test involves stepping up and down for three minutes at a steady pace, then sitting and counting heartbeats for a complete minute after you stop. To compare with the ratings chart, it should be a 12 inch step, but I just use the 9 inch bottom stair. Cheating, but convenient, and it still shows me that I’ve got healthier.
When I first did it back in August last year (before I started running, and before I’d started taking iron and folate supplements) my recovery minute’s pulse was 117. Today it was 75 – which is less than my resting heart rate was eighteen months ago! So something is working, even if I don’t run fast or often. This is the Garmin heart-rate monitor graph from today’s 3 minutes. (I didn’t use the Garmin for the one minute count – I just liked the look of that steep drop back down to resting heart rate.)
I had thought it was down to the exercise, but looking at the sparkpeople tracker for the step test, maybe it is as much to do with having enough iron and folate in my blood, because there was a significant improvement before I began the running in December last year. All good fun, anyway. 🙂