Post
by Mirrormn » Thu May 10, 2012 7:22 pm
Today, I ran.
Long story: It started with the charity 5k I went to ~2 weeks ago. I tried to time my run, but my phone ran out of batteries during the race. My sister, who ran the race with me, claimed she had finished in 28 minutes, and I was 3 minutes ahead of her, meaning I clocked in at 25 minutes. I found this a little unbelievable considering my rather slow pace, so since then, I've been meaning to find an accurate 5k route to run and time myself properly.
This Monday, I went to my local university's track, and ran 11 laps of 500 yards (which is 5.029km). It took me 34:58. A bit disappointing, but definitely more believable than 25 minutes. I don't know if my sister's timing was way off, or the course distance of the charity 5k was way off, but that time was obviously completely wrong.
So, today, I decided to push myself to go faster. I normally jog with a pretty fast and short gait, with most of the forward motion coming from pulling my body forward using the calf muscles. Today, I forced myself to adopt a much longer and slower gait. I focused on making my strides as long as possible, and as a result, most of my forward motion ended up coming from pushing my body forward at the end of a stride using the thigh muscles. This gait, although much slower in frequency, seemed to increase my overall speed significantly. I definitely increased the length of my normal 30-minute run, probably by 0.25-0.5 miles, even with the 2 minute walking break I took in the middle. This break was necessary because the new gait was highly dependent on muscles in my thighs that I haven't really used for running before today. Specifically, my vastus medialis* (inner thigh) muscles seemed to be the main source of locomotion for my new gait, much more so than any other running motion I've undertaken before; even sprints (which I have often been spontaneously breaking into while walking around, as of late) and jogging uphill seem to depend more on the vastus intermedius* (front thigh) muscles.
That being said, my new running gait seemed more efficient than my old fast-jogging gait. At a rough estimate, I'd say I went 10% faster while only using 5% more energy. I feel like if I had been using this gait from the beginning of the Couch to 5k, it would probably use less energy than the fast-jogging gait, while being considerably faster. In short, I'm pretty sure I've been running the wrong way for 10 weeks, and I regret it a little bit. I'm going to try to use the new gait from now on, and I'm going to revisit the track on Monday to time myself using it. I'm betting I can get much closer to 5k in 30 minutes.
TL;DR: If you're currently in the early weeks of the Cto5k program, I would recommend that you push yourself to run faster using long, infrequent strides. It won't be much more difficult than using a more rapid but slower jogging gait, and you'll appreciate the increase in overall speed later on.
Edit: At least I think these are the right muscles. I'm no anatomist.