An article last year in Psychological Science by Alia J. Crum and Ellen J. Langer, Mind-Set Matters: Exercise and the Placebo Effect, laid out an extremely interesting example of ‘top-down’ culturo-psycho-physiological dynamics in the body from my favorite area of research: exercise and sports. Crum and Langer looked at a group of 84 hotel room keepers. From the abstract:
Those in the informed condition were told that the work they do (cleaning hotel rooms) is good exercise and satisfies the Surgeon General’s recommendations for an active lifestyle. Examples of how their work was exercise were provided. Subjects in the control group were not given this information. Although actual behavior did not change, 4 weeks after the intervention, the informed group perceived themselves to be getting significantly more exercise than before.
If this were the only finding, there wouldn’t be too much news here. But the change in understanding of what they were doing also had physical effects on the room attendants, including, in addition to changed impressions, an average weight loss of 2 pounds, decrease in systolic blood pressure of 10 points, and positive effects on body mass and heart rates — in only 4 weeks with NO change in the actual activity level. Becoming convinced that they were getting enough exercise or engaged in adequate activity to promote health helped their background activity to affect their physiology. Exercise was not just a physical activity, it was also a state of mind (more accurately, without the ‘state of mind’ activity didn’t have the effects of ‘exercise’). (This research is also discussed in an article in The New York Times.)
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