Weight Loss Hypocaloric Diet
Effects of a 6-Week Hypocaloric Diet on
Changes in Body Composition, Hunger, and Subsequent Weight Regain in Healthy
Young and Older Adults
Weight Loss Study Background
A short-term impairment in the regulation of food intake in older adults
has been suggested by recent weight loss studies, but further studies
are needed to determine if a longer-term impairment exists and to identify
underlying causes.
Weight Loss Study Methods
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 (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).
Weight Loss Study Results
OLD and overweight subjects lost significantly more weight during underfeeding
than did normal weight subjects 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. There was
no significant difference among groups in the relationship between weight
lost and fat-free mass lost.
Weight Loss Study Conclusion
Healthy OLD adults have an impaired ability to regulate food intake over
at least 6 months following underfeeding compared with normal weight adults,
and a reduction in their perceived frequency of hunger may be a contributing
factor
Source: 2000 The Gerontological Society
of America
Julio C. Morigutia, Sai K. Dasa, Edward Saltzmana, Alberto Corralesa,
Megan A. McCrorya, Andrew S. Greenberga and Susan B. Roberts.
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