One of the latest running performance / fashion fads to hit the market is the compression sock. Compression socks are typically used to treat patients with deep vein thrombosis and similar circulation-related health issues by providing additional constriction/pressure on the lower extremities as a means of improving blood flow. The transition to performance-related activities makes sense on the surface (i.e. facilitated blood flow should equal improved performance), but a deeper look reveals that the jury is still out.
Hypothesis
As mentioned above, the basic theory behind using compression socks for running performance is a bit of a non-sequitor. If it helps people with DVT, then it must help healthy people who are running. As the details show below, however, while there are benefits for sedentary adults there are minimal documented improvements during exercise.
Reality
If they are sleek and make you feel fast (and/or sexy), they must work, right? Right? Well, technically speaking there has been little evidence of any performance enhancing effects during running. In a study testing competitive endurance runners on a treadmill at sub-maximal and maximal paces there was no statistically significant observed change in performance (http://gradworks.umi.com/14/27/1427336.html). This is repeated in other studies, with some showing that the relative temperature of the area does increase — but no proof of performance gains (http://bjsportmed.com/cgi/content/abstract/41/7/409).
Perception is 9/10ths Reality?
Subjects across different studies, many with different focus points, do state that they felt “less muscle soreness” and “reduced fatigue” as compared to non-compression sock wearers. While not conclusive by any means, this conviction is not to be brushed off. After all, if you believe something is helping you well, then, it probably is. Get it?
Coach P’s Thoughts
I personally use them for recovery after runs longer than an hour (or stoopid hard). I don’t really get the time in my life to sit down and put my feet up any more, so having the socks on at least helps me feel like I am doing something to help my body recover.
Have you used the socks? What do you think?
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