Table 1

 Mean (SD) physical characteristics and bone parameters of study patients

Treatment group (n = 35)Control group (n = 24)Non-study group (n = 55)
BaselineFollow upBaselineFollow upBaseline
BMD = bone mineral density; BMC = bone mineral content; BMI = body mass index.
*p<0.005 significantly younger than treatment/non-study group.
†p<0.05, ††p<0.0001 significantly higher than treatment group.
‡p<0.005 significantly higher than treatment/non-study groups.
Age (years)24.7 (6.2)27.0 (6.3)21.4 (4.0)*24.3 (4.7)24.5 (6.3)
Height (cm)165.7 (8.5)166.3 (8.9)164.7 (9.7)164.3 (9.2)164.5 (8.1)
Weight (kg)55.6 (8.9)55.9 (10.0)55.3 (10.4)55.9 (10.1)52.7 (8.4)
BMI (kg/m2)20.2 (2.1)20.1 (2.3)20.3 (2.5)20.6 (2.2)19.4 (2.4)
Duration of treatment (years)1.95 (0.4)
Sex (F/M)15/2016/830/25
PA spine (L2–L4)
    BMC (g)41.0 (8.4)43.4(9.6)45.6 (9.3)45.9 (8.9)42.5 (8.2)
    Area (cm2)40.6 (5.0)41.5 (5.3)40.1 (5.5)40.3 (5.4)40.0 (4.4)
    BMD (g/cm2)1.001 (0.12)1.035 (0.13)1.131 (0.10)††1.132 (0.10)1.059(0.14)
    Z score−1.8 (1.0)−1.5 (1.1)−0.7 (1.0)††−0.7 (0.8)−1.2 (1.2)
Femoral neck
    BMC (g)4.2 (0.8)4.3 (0.7)4.7 (0.7)4.5 (0.7)4.3 (0.8)
    Area (cm2)4.6 (0.5)4.7 (0.5)4.5 (0.5)4.5 (0.5)4.5 (0.4)
    BMD (g/cm2)0.911 (0.13)0.910 (0.11)1.029 (0.08)††0.987 (0.08)0.948 (0.15)
    Z score−1.1 (1.0)−1.0 (0.8)0.0 (0.6)‡−0.3 (0.6)−0.8 (1.2)
Total body
    BMC (g)2164 (384)2238 (438)2290 (469)2267 (462)2146 (411)
    Area (cm2)1984 (255)2003 (279)2009 (285)1997 (278)1963 (254)
    BMD (g/cm2)1.084 (0.07)1.110 (0.08)1.131 (0.08)1.128 (0.08)1.086 (0.09)
    Z score−1.15 (0.9)−0.9 (0.9)−0.4 (0.8)†−0.4 (0.7)−0.8 (1.2)