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Table 4 Baseline and follow-up dietary, physical activity, and bone variables among 30 Girl Scout troops (troop-level means) by treatment group (n = 15 control, n = 15 intervention)

From: Increasing weight-bearing physical activity and calcium-rich foods to promote bone mass gains among 9–11 year old girls: outcomes of the Cal-Girls study

Label Baseline Follow-up 1 Follow-up 2 Two-year Intervention Effect
  C I C I C I EffectA SE
Dietary Intake         
   Calcium (mg)* 1274 1199 1245 1401 1310 1394 92 82
   Energy (kcal) 2139 2136 2108 2138 2127 2047 -- --
Physical Activity         
   Weight-bearing PA score@ 507 448 539 472 555 531 49 91
   Osteogenic score$ 29 24 25 23 25 22 -- --
Bone Mineral Area (BA)         
   Total body (cm2) 1287 1274 1443 1421 1600 1606 8.1 7.2
   Total hip (cm2) 24.1 24.0 26.3 26.3 28.3 28.2 -0.26 0.11
   Spine (L1-4) (cm2) 38.6 38.2 42.7 42.1 46.7 46.7 .25 .33
   Femoral neck (cm2) 4.0 4.0 4.2 4.2 4.4 4.5 .08 .03
   1/3 distal radius (cm2) 2.1 2.1 2.2 2.2 2.3 2.3 .01 .01
Bone Mineral Content (BMC)         
   Total body (g) 1106 1084 1292 1241 1495 1485 -4.9 14.5
   Total hip (g) 17.9 17.3 20.9 20.4 24.2 23.7 -.63 .29
   Spine (L1-4) (g) 26.0 25.3 31.6 30.4 38.1 37.8 -.06 .58
   Femoral neck (g) 2.8 2.8 3.1 3.1 3.5 3.5 .03 .04
   1/3 distal radius (g) 1.1 1.1 1.2 1.2 1.3 1.3 .01 .01
Bone Mineral Density (BMD)         
   Total body (g/cm2) 0.85 0.85 0.89 0.87 0.93 0.92 -.003 .01
   Total hip (g/cm2) 0.74 0.72 0.79 0.77 0.85 0.83 -.010 .01
   Spine (L1-4) (g/cm2) 0.67 0.66 0.73 0.71 0.81 0.80 -.011 .02
   Femoral neck (g/cm2) 0.71 0.69 0.75 0.72 0.80 0.78 -.008 .007
   1/3 distal radius (g/cm2) 0.52 0.51 0.54 0.54 0.57 0.57 .001 .004
  1. A Adjusted net difference between change in intervention and control troop-level means (adjusted for baseline age, race, weight; baseline and change in height, menarcheal status, Tanner breast stage).
  2. * Adjusted for energy intake; and above variables, not including height or change in height)
  3. @ Calculated variable of total weight-bearing physical activity minutes, MET value, and self-reported intensity.
  4. Adjusted for above variables (in A), not including energy intake, height or change in height.
  5. $ Calculated variable of ground reaction force value × (Ln (minutes in activity +1)