Experiments in Speedwalking

I'm starting to worry that my running days are over. Well, worry may be too strong a word. I started running after Teddy was born since it was the only exercise I could do on the spur of the monent any time of day or night ... "the baby's asleep, I'm going for a run." I have never considered myself a runner in a "I am a Dancer and a Dancer dances" sort of way. Still, I like it in a lot of ways. It's a highly portable workout. It gets me outside day in and day out. It also is a more challenging aerobic workout than anything else I do. The problem is that it's also very high impact and I suspect that's one of the causes of my current achy back. I actually stopped running for a year and had far fewer back problems. Since I joined an early morning bootcamp class earlier this year (a class which is full of serious runners) I have been going back to it, with a corresponding increase in back issues. Now I have a herniated L3-L4 disk and feel like I'm 90 years old. The funny thing is I'm fine while moving: walking, kayaking, rowing, running. It's staying still that hurts.

Anyway, I've been looking to find activities to take the place of running. My current experiment is speedwalking. I wouldn't say I was racewalking, since I don't have that odd racewalking gait down. Rather, it's just walking as fast as I can with a fast cadence. So far the experiment has been a success. Thanks to my lovely Garmin Forerunner I know that I can get my heart rate pretty well up there - not quite like running, but definitely into Zone 4 (aerobic training). With running I get my heart rate up to about 150 BPM pretty quickly and stay there. When speedwalking my HR takes longer to ramp up and tends to sit in the mid-140's. My second speedwalk I got up into the 150's for the last ten minutes or so - not sure what was different or if I was just worked out at that point. The tables all say I should be exercising at abut 146 BPM but I seem to be able to handle a little faster. Maybe I should try speedwalking the hills of my neighborhood.

The only downside is I'm sure I look like a dork doing it. But, it still gets me outside, and it's much lower impact than running. I'm going to keep experimenting.