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Table 1 Kinetic parameters for endpoints from the Minnesota starvation study based on group averages (n = 32).

From: Modeling transitions in body composition: the approach to steady state for anthropometric measures and physiological functions in the Minnesota human starvation study

Quantity or Function C12 mean S12 mean S24 mean k (wk-1)a Steady State
Body mass (kg) 69.39 57.28 52.57 0.079 49.6
Fat mass (kg) 9.84 4.57 3.04 0.103 2.41
Fat free mass (kg)b 59.55 52.71 49.53 0.064 46.8
Body Mass Indexa (kg/m2) 21.7 17.92 16.44 0.078 15.5
Chest girthb (cm) 89.28 83.69 82.61 0.137 82.4
Waist girth (cm) 78.08 71.23 70.7 0.213 70.7
Girth Sumsd (cm) 113.3 98 92.5 0.085 89.4
Active Tissue Massc (kg) 39.9 32.0 29.2 0.086 27.7
Red blood cellsc (kg) 2.74 2.11 1.99 0.138 1.96
REEd (kcal/d) 1608 1100 994 0.131 966
Harvard work test 64.1 33.1 18.1 0.060 4.04
Hand dynamometer (kg) 58.2 47.2 41.8 0.059 36.6
N excretion (g/24 h) 13.17 8.12 7.42 0.165 7.31
  1. Values for C12, the last week before energy restriction was imposed, were used as t = 0 in the model. S12 and S24 are the values recorded during the 12th and 24th weeks of energy restriction (t = 12 and 24 weeks, respectively).
  2. aAll parameter values were calculated from group mean data at C12, S12 and S24 by the 3 point method. Mean stature was 1.788 m.
  3. bFat free mass was calculated by subtracting measured fat mass from body mass.
  4. cActive tissue mass equals body mass minus the sum of fat mass, bone mineral, and thiocyanate space. Group data for active tissue mass, and red blood cell mass are from Table 152, and mean chest girths are from Table 49 [1].
  5. dSum of girths of calf, arm and thigh. REE, resting energy expenditure.