%0 Journal Article
%T A before and after comparison of the effects of forest walking on the sleep of a community-based sample of people with sleep complaints
%A Emi Morita
%A Makoto Imai
%A Masako Okawa
%A Tomiyasu Miyaura
%A Soichiro Miyazaki
%J BioPsychoSocial Medicine
%D 2011
%I BioMed Central
%R 10.1186/1751-0759-5-13
%X Participants were 71 healthy volunteers (43 men and 28 women). Two-hour forest-walking sessions were conducted on 8 different weekend days from September through December 2005. Sleep conditions were compared between the nights before and after walking in a forest by self-administered questionnaire and actigraphy data.Two hours of forest walking improved sleep characteristics; impacting actual sleep time, immobile minutes, self-rated depth of sleep, and sleep quality. Mean actual sleep time estimated by actigraphy on the night after forest walking was 419.8 ¡À 128.7 (S.D.) minutes whereas that the night before was 365.9 ¡À 89.4 minutes (n = 42). Forest walking in the afternoon improved actual sleep time and immobile minutes compared with forest walking in the forenoon. Mean actual sleep times did not increase after forenoon walks (n = 26) (the night before and after forenoon walks, 380.0 ¡À 99.6 and 385.6 ¡À 101.7 minutes, respectively), whereas afternoon walks (n = 16) increased mean actual sleep times from 342.9 ¡À 66.2 to 475.4 ¡À 150.5 minutes. The trend of mean immobile minutes was similar to the abovementioned trend of mean actual sleep times.Forest walking improved nocturnal sleep conditions for individuals with sleep complaints, possibly as a result of exercise and emotional improvement. Furthermore, extension of sleep duration was greater after an afternoon walk compared to a forenoon walk. Further study of a forest-walking program in a randomized controlled trial is warranted to clarify its effect on people with insomnia.Sleep disturbance is a major health issue in Japan. In the general population, a national survey in 1997 showed that the prevalence of insomnia, including difficulty initiating sleep, difficulty maintaining sleep, and early morning awakening, was 21.4% [1]. Sleep disturbances have been reported to be a risk factor for depression and suicide [2-7]. Therefore to obtain good mental health among the general population, it is important to improve slee
%K forest walking (Shinrin-yoku)
%K actual sleep time
%K actigraphy
%K St. Mary's Hospital Sleep Questionnaire
%K circadian phase
%U http://www.bpsmedicine.com/content/5/1/13