1. Effects of a 6-week hypocaloric diet on changes in body composition, hunger, and subsequent weight regain in healthy young and older adults.
- Author
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Moriguti, Julio C., Das, Sai K., Saltzman, Edward, Corrales, Alberto, McCrory, Megan A., Greenberg, Andrew S., Roberts, Susan B., Moriguti, J C, Das, S K, Saltzman, E, Corrales, A, McCrory, M A, Greenberg, A S, and Roberts, S B
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AGING & nutrition , *GERIATRIC nutrition , *BODY weight , *DIET , *INGESTION , *NUTRITION - Abstract
Recent studies have suggested a short-term impairment in the regulation of food intake in older adults, but further studies are needed to determine if a longer-term impairment exists and to identify underlying causes. Changes in body weight and composition were measured over a 6-week underfeeding study and a 6-month follow-up period in healthy young (n = 23) and older (OLD, n = 18) men and women. The young adults were either normal weight (YNW, n = 12) or overweight (YOW, n = 11). Energy intakes during underfeeding were 896 +/- 18 (SEM) kcal less than weight-maintenance energy requirements determined prior to underfeeding. In addition, changes in perceived hunger during underfeeding were monitored in a subgroup (n = 19). OLD and YOW subjects lost significantly more weight during underfeeding than did YNW subjects (p = .025 and .000, respectively), and they did not gain back significant weight in the 6-month follow-up. In addition, OLD subjects reported a significantly lower frequency of hunger during underfeeding (p = .05). There was no significant difference among groups in the relationship between weight lost and fat-free mass lost. Healthy OLD adults have an impaired ability to regulate food intake over at least 6 months following underfeeding compared with YNW adults, and a reduction in their perceived frequency of hunger may be a contributing factor. [ABSTRACT FROM AUTHOR]
- Published
- 2000
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