Table 4.

Absolute and relative changes in body composition, areal BMD, volumetric BMD, bone strength, bone markers, parathyroid hormone (PTH), 25-hydroxy (25-OH) vitamin D and aerobic power in the weight stable women (n=10).

	Baseline	4 Months	Mean Change (95% CI) (% Change)	p value
Body Composition (kg)
Total Mass	73.6±13.5	73.9±13.4	0.3(−1.0,1.7) (0.48 %)	0.61
Fat Mass	29.2±8.9	29.7±9.0	0.4(−0.5,1.4) (1.63 %)	0.33
Fat Free Mass	44.4±6.2	44.3±5.7	−0.1(−0.9,0.6) (−0.14%)	0.71
Areal BMD (g/cm2)
Hip	0.878±0.091	0.867±0.089	−0.011(−0.024,0.002) (−1.23%)	0.09
Femoral Neck	0.750±0.090	0.759±0.088	0.009(−0.006,0.024) (1.29 %)	0.20
Trochanter	0.661±0.104	0.652±0.100	−0.009(−0.023,0.005) (−1.25%)	0.19
Subtrochanter	1.044±0.113	1.032±0.125	−0.012(−0.028,0.003) (−1.30%)	0.10
Volumetric BMD (g/cm3)
Total Hip	281.8±33.6	273.5±40.9	−8.3(−24.0,7.4) (−3.00%)	0.26
Cortical	881.6±76.6	855.8±45.6	−25.8(−73.4,21.7) (−2.50%)	0.25
Trabecular	130.2±15.8	126.7±16.2	−3.5(−11.1,4.1) (−2.47%)	0.33
Total Neck	295.1±42.2	285.5±49.8	−9.6(−29.3,10.2) (−3.28%)	0.30
Cortical	904.3±105.0	899.8±106.5	−4.5(−62.6,53.6) (−0.12%)	0.86
Trabecular	134.4±13.0	132.7±15.9	−1.7(−8.3,5.0) (−1.25%)	0.58
Bone Strength (Femoral Neck)
CSMImax (mgxcm)	1935±678	3279±3305	1345(−832.8,3522.2) (57.89%)	0.20
SMmax (cm3)	4.8±1.4	7.0±4.4	2.2(−0.4,4.8) (40.01%)	0.08
CSMImin (mgxcm)	1532±550	1830±1063	298(−175.7,772.0) (15.33%)	0.19
SMmin (cm3)	4.3±1.2	5.4±2.4	1.1(−0.4,2.5) (24.57%)	0.13
Bone Markers
CTX (ng/mL)	0.6±0.2	0.7±0.3	0.1(−0.0,0.2) (17.90%)	0.15
BAP (U/L)	30.8±7.5	30.5±6.3	−0.3(−4.4,3.8) (1.38 %)	0.87
PTH (pg/mL)	50.6±28.0	58.6±28.0	8.0(−3.5,19.5) (21.51%)	0.15
Vitamin D (25OH) (ng/mL)	29.4±6.7	30.7±6.1	1.3(−3.4,6.0) (7.73%)	0.54

^*P values are based on a paired t test.

BMD: bone mineral density; CSMI_max: cross-sectional moment of inertia, strong axis of bone; CSMI_min: cross-sectional moment of inertia, weak axis of bone; Z_max: section modulus, strong axis of bone; Z_min: section modulus, weak axis of bone.