In:
British Journal of Nutrition, Cambridge University Press (CUP), Vol. 56, No. 1 ( 1986-07), p. 1-9
Abstract:
1. Thirteen adult females and two males were overfed a total of 79–159 MJ (1900–38 000 kcal) during a 3-week period at the Clinical Research Center, Rochester. The average energy cost of the weight gain was 28 kJ (6.7 kcal)/g, and about half the gain consisted of lean body mass (LBM) as estimated by 40 Kcounting. 2. A survey of the literature disclosed twenty-eight normal males and five females who had been overfed a total of 104–362 MJ (2500–87000 kcal) under controlled conditions: twenty-five of these had assays of body composition, and three had complete nitrogen balances. 3. When these values were combined with those from our subjects (total forty-eight), there was a significant correlation between weight gain and total excess energy consumed ( r 0.77, P 〈 0.01) and between LBM gain and excess energy ( r 0.49, P 〈 0.01). Based on means the energy cost was 33.7 kJ (8.05 kcal)/g gain and 43.6% of the gain was LBM; from regression analysis these values were 33.7 kJ (8.05 kcal)/g gain and 38.4% of gain as LBM. 4. Individual variations in the response could not be explained on the basis of sex, initial body-weight or fat content, duration of overfeeding, type of food eaten, amount of daily food consumption or, in a subset of subjects, on smoking behaviour. 5. The average energy cost of the weight gain was close to the theoretical value of 33.8 kJ (8.08 kcal)/g derived from the composition of the tissue gained.
Type of Medium:
Online Resource
ISSN:
0007-1145
,
1475-2662
Language:
English
Publisher:
Cambridge University Press (CUP)
Publication Date:
1986
detail.hit.zdb_id:
2016047-1
SSG:
12
SSG:
21
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