A brief overview of the smattering of data collected from this survey:
* I posted links to the survey on this blog, on Facebook, and on Letsrun.com. In so doing I was selecting heavily for respondents who are or were distance runners, but that was the point–I was curious to learn what approximate fraction of runners engage in yoga. I’m sure that the title of the survey itself selected for runners who do yoga more than it selected for those who do or once did only one of the two, but the extent to which this is the case is unknown. (The question about geographic location was gratuitous.)
* I was surprised the survey got even the number of responses it did–28.
* Of the 28, 20 (71%) consider themselves regular runners, with 90% of that group doing three or more runs a week. Of the four non-runners, four used to run and four never have. So 86% (24/28) or respondents qualify as runners of some sort.
* Of the 28, 8 (29%) regularly do yoga and another six used to, yielding a lifetime “prevalence” of 50%. Of the 8 who are currently active, 7 currently run and 1 used to run; in other words, no current yoga participant has never run.
* Of the 6 ex-yoga-performers, 5 currently run and 1 used to run. That means all 14 who admit to having ever regularly done yoga either are (86%; 12/14) or once were (14%; 2/14) regular runners.
* 4 of the 28 respondents said they had never either run or done yoga. Of these 4, 2 were from outside the U.S. out of a total of 4 total respondents from abroad. This may mean something, but probably not. It’s mildly interesting and I would guess that a few people who “know” me only from this blog–where running is rarely a topic of discussion–have been followers since our ScienceBlogs.com days, when a comparatively high fraction of visitors were from Europe, Asia and Africa.
* I was relating these findings to a running friend who also does yoga, and she told me that the majority of people she knows who do yoga have never run (and this is in Boulder, Colorado, where running is a de facto civic duty and yoga only slightly less of one). This speaks to the population at which this mini-survey was aimed. I would have guessed that the percentage of people who start as runners and later gravitate toward yoga is much higher than the reverse even without these results.