{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T00:10:54Z","timestamp":1791159054047,"version":"4.1.0"},"reference-count":28,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2009,10,5]],"date-time":"2009-10-05T00:00:00Z","timestamp":1254700800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Intl J Eating Disorders"],"published-print":{"date-parts":[[2010,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective:<\/jats:title><jats:p>To use a Progressive Ratio (PR) computerized \u201cwork\u201d paradigm to measure course and correlates of exercise motivation in in\u2010patients with Anorexia Nervosa (AN).<\/jats:p><\/jats:sec><jats:sec><jats:title>Method:<\/jats:title><jats:p>Sixteen inpatients with AN participated in a PR task assessing the relative reinforcing effect of two different increments of cash versus the opportunity to exercise for upto 30 min, twice; at low weight, and, for <jats:italic>n<\/jats:italic> = 10 participants, after weight restoration.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results:<\/jats:title><jats:p>There was a trend toward a higher work for exercise with 2 versus 5 increments of cash as the alternative reinforcer. Exercise breakpoint did not differ between low and normal\u2010weight states. Exercise breakpoint at each time point was correlated with prehospitalization exercise \u201ccommitment\u201d (Commitment to Exercise Scale, <jats:italic>r<\/jats:italic> = .613, <jats:italic>p<\/jats:italic> = .012 at T1; <jats:italic>r<\/jats:italic> = .634, <jats:italic>p<\/jats:italic> = .049 at T2).<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion:<\/jats:title><jats:p>Patients with AN will work at a PR task for access to even a small amount of exercise. Exercise motivation during hospitalization is correlated with prehospital exercise commitment and does not appear to change consistently with weight restoration. \u00a9 2009 by Wiley Periodicals, Inc. 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