The physiological effects of Shinrin-yoku
ncbi.nlm.nih.gov
ncbi.nlm.nih.gov
"People used to laugh at me when they read on my online dating profile that I enjoy long walks on the beach. They thought it was some kind of joke," said Michael Anderson, a Southern California resident. "Well, who is laughing now?"
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Seriously though, the therapeutic effects of nature exposure are well-documented, at least anecdotally. I'm glad someone took the effort to scientifically validate them (even though it is a non-double-blind experiment with only 12 subjects).
This would imply that each variable group was composed of 12 participants but overall there were 280 participants.
"The subjects were randomly divided into two groups. On the first day of the experiments, six subjects were sent to a forest site, and the other six subjects to a city site. On the second day, the subjects were sent to the other type of site as a cross-check."
To me, that suggests 12 total subjects, and 280 "trials".
I would hate to take a walk in a forest that has a population density equal to a train station. On the other hand, a train station with a population density equal to a quiet forest might come across as creepy/unsafe.
Not statistical though.
It takes a few minutes to get used to but it's far better than most scientific publishers' web sites.
[1] http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2793346/?report=...