Table 4.

Bone mineral density (BMD) at baseline and at the end of each protocol, BMD gains and weight‐normalized BMD gains in the four groups

	C10 (a) n = 11	IT (b) n = 11	C14 (c) n = 12	CT (d) n = 10
Baseline
Whole body BMD (g/cm²)	0.147 ± 0.004‡	0.144 ± 0.006§	0.154 ± 0.005	0.155 ± 0.005
Femur BMD (g/cm²)	0.253 ± 0.011‡	0.253 ± 0.013§	0.272 ± 0.013	0.281 ± 0.013
End
Whole body BMD (g/cm²)	0.194 ± 0.008* , ‡	0.191 ± 0.006*	0.205 ± 0.006*	0.194 ± 0.006* , ‡
Femur BMD (g/cm²)	0.349 ± 0.014* , ‡	0.353 ± 0.012*	0.389 ± 0.020*	0.364 ± 0.013* , ‡
Gains
Whole body BMD (g/cm²)	0.047 ± 0.006	0.047 ± 0.005	0.051 ± 0.005	0.038 ± 0.004† , ‡
Femur BMD (g/cm²)	0.096 ± 0.014‡	0.101 ± 0.009	0.117 ± 0.017	0.082 ± 0.011† , ‡
Normalized gains
Normalized whole body BMD (mg/cm²/g)	0.206 ± 0.036† , §	0.283 ± 0.060	0.231 ± 0.038† , §	0.274 ± 0.051

Data are presented as mean ± SD.

*End values were significantly higher than the baseline values (P < 0.0001), in all groups and parameters. Gains were calculated as end values – baseline values. Normalized BMD gains were calculated by whole body BMD gain divided by body weight gain. Control 10 (C10) and interval training (IT) were followed for 10 weeks, and control 14 (C14) and moderate continuous training (CT) were followed for 14 weeks.

Differences between groups were considered significant at P < 0.05. ^†significantly lower than IT; ^‡significantly lower than C14; ^§significantly lower than CT.