A comparison of the restorative effect of a natural environment with that of a simulated natural environment

This study aimed to compare the restorative effects of 30 min relaxation in a natural environment with an indoor simulation of the same natural environment. A repeated-measure design was carried out and 18 participants suffering from stress and/or burnout syndrome were counterbalanced into the two conditions. Both physiological measures and psychological instruments were applied. Further, qualitative descriptions of experiences were obtained. A phenomenological analysis of the qualitative data resulted in six categories for the natural environment: Intensified sensory perception; A feeling of harmony and union with nature; Well-being and quality of life; Renewed energy and awakening; “Here-and-now” thinking; and A sense of tranquillity, while for the simulated natural environment, there were five categories: Restlessness and anxiety; Lack of concentration; A sense of being cut off from nature's sensory input; A longing to be in 'real' nature; and Positive emotions. The natural environment yielded a significantly higher rating of degree of altered states of consciousness (ASC) and energy than the simulated natural environment. The results suggest that both environments facilitated stress reduction, with the natural environment additionally bringing increased energy and ASC, thus possibly enhancing and promoting restoration.