Proof of principle - established in a laboratory, where 100 subjects exercised on a treadmill whilst viewing a series of rural or urban pleasant and unpleasant pictures. Only those subjects viewing rural pleasant scenes experienced significant decreases in blood pressure (see Figure), but all pleasant green scenes enhanced mood and self-esteem.
An 8.7% decrease in blood pressure was reported after exercising whilst viewing rural pleasant pictures compared with a 1.9% decrease when faced with a blank screen and a 3.3% increase in blood pressure after viewing urban unpleasant pictures.
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