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Table 4 Model predictions of ΔFFM

From: New fat free mass - fat mass model for use in physiological energy balance equations

 

NHANES

Forbes

NHANES ΔFFM

Forbes ΔFFM

 

Baseline

Final

Baseline

Final

  

Anorexia [17]

1.5 ± 3.1

--

2.5 ± 2.8

--

--

--

Athletes Males [18]

8.0 ± 4.5

--

9.3 ± 5.3

--

--

--

Athletes Females [18]

6.1 ± 2.9

--

3.7 ± 3.7

--

--

--

Bariatric Surgery [20, 21]

-3.8 ± 3.2

-5.7 ± 3.2

1.4 ± 3.2

4.7 ± 3.3

-2.3 ± 3.0

-1.0 ± 3.2

CALERIE 6 Month Females [19]

-1.6 ± 3.2

1.2 ± 3.0

-2.0 ± 2.7

0.9 ± 2.5

-0.4 ± 1.1

-0.3 ± 1.2

CALERIE 6 Month Males [19]

4.4 ± 3.2

5.7 ± 4.7

4.9 ± 3.1

6.1 ± 4.4

-0.5 ± 1.2

-0.4 ± 1.2

Gastric Bypass [22]

2.8 ± 3.9

-2.0 ± 7.2

-5.0 ± 4.5

-2.3 ± 5.2

-7.7 ± 4.7

-0.3 ± 5.5

Overfeeding Males [24, 25]

-2.2 ± 6.1

-0.5 ± 5.4

-2.2 ± 6.6

-0.3 ± 5.5

0.1 ± 1.5

-0.1 ± 1.6

Overfeeding Females [24, 25]

0.2 ± 3.3

-2.0 ± 3.1

-0.6 ± 3.8

-2.7 ± 3.4

0.8 ± 1.1

0.7 ± 1.3

Minnesota [23]

2.9 ± 3.3

5.2 ± 3.0

0.6 ± 2.8

4.6 ± 2.2

2.2 ± 2.0

0.6 ± 2.1

  1. Mean error between measured and predicted FM at baseline and at the end of the weight change study along with the mean error in the ΔFFM. The NHANES model is comparable to the Forbes model except in the case of the gastric bypass subjects.