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Table 1.

Phenotypic characterization prior to weight implantation

MaleNFemaleNP
Body mass (g) 35.3±0.4 34 26.0±0.3 33 <0.001 
Energy intake (kJ d-176.7±1.8 34 69.7±1.7 33 0.005 
Lean body mass (g) 27.9±0.3 23 20.8±0.4 20 <0.001 
Fat mass (g) 7.5±0.3 23 4.1±0.3 20 <0.001 
ETE (kJ d-155.7±1.0 17 46.6±1.5 12 <0.001 
ERE (kJ d-138.9±0.9 17 27.7±1.4 12 <0.001 
RQ 0.98±0.01 17 0.97±0.02 12 0.587 
PAL 1.44±0.03 17 1.76±0.07 12 0.001 
MaleNFemaleNP
Body mass (g) 35.3±0.4 34 26.0±0.3 33 <0.001 
Energy intake (kJ d-176.7±1.8 34 69.7±1.7 33 0.005 
Lean body mass (g) 27.9±0.3 23 20.8±0.4 20 <0.001 
Fat mass (g) 7.5±0.3 23 4.1±0.3 20 <0.001 
ETE (kJ d-155.7±1.0 17 46.6±1.5 12 <0.001 
ERE (kJ d-138.9±0.9 17 27.7±1.4 12 <0.001 
RQ 0.98±0.01 17 0.97±0.02 12 0.587 
PAL 1.44±0.03 17 1.76±0.07 12 0.001 

Values for body mass and gross energy intake are means of 1 week or 3 weeks prior to weight load, respectively. Body composition parameters were measured immediately before surgery; energy expenditure parameters were obtained 2 weeks prior to weight load by measurement over a 48 h period.

ETE, total energy expenditure; ERE,resting energy expenditure; RQ, respiratory quotient; PAL, physical activity level.

Values are means ± s.e.m. Gender-specific differences were tested using Student's t-test.

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