Table 2 Bone mineral density at baseline, after 12-months and mean of difference within groups according to resistance training participation (n = 91)
Variables | Impact sports + RT (n = 21) | Impact sports only (n = 45) | Swimming + RT (n = 8) | Swimming only (n = 17) |
|---|---|---|---|---|
Crude aBMD (g/cm2) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) |
Upper limbs | ||||
Baseline | 0.827 (0.114) | 0.798 (0.116) | 0.865 (0.066) | 0.750 (0.115) |
Follow-up | 0.901 (0.106) | 0.859 (0.103) | 0.927 (0.069) | 0.812 (0.080) |
Mean of change | 0.074 (0.055) | 0.062 (0.050) | 0.062 (0.021) | 0.062 (0.052) |
Mean of change adjusted# | 0.077 (0.055 to 0.099) | 0.060 (0.046 to 0.074) | 0.096 (0.074 to 0.118) | 0.046 (0.032 to 0.060) |
Lower limbs | ||||
Baseline | 1.299 (0.158) | 1.259 (0.181) | 1.234 (0.119) | 1.127 (0.135) |
Follow-up | 1.352 (0.144) | 1.348 (0.178) | 1.277 (0.119) | 1.192 (0.130) |
Mean of change | 0.053 (0.043) | 0.089 (0.056) | 0.043 (0.019) | 0.065 (0.036) |
Mean of change adjusted# | 0.066 (0.043 to 0.088) | 0.084 (0.069 to 0.098) | 0.054 (0.032 to 0.078) | 0.060 (0.045 to 0.074) |
Spine | ||||
Baseline | 1.120 (0.152) | 1.019 (0.141) | 1.133 (0.082) | 0.974 (0.150) |
Follow-up | 1.148 (0.137) | 1.057 (0.137) | 1.063 (0.088) | 0.939 (0.125) |
Mean of change | 0.028 (0.064) | 0.038 (0.052) | -0.069 (0.062) | -0.035 (0.059) |
Mean of change adjusted# | 0.039 (0.015 to 0.064) | 0.033 (0.017 to 0.049) | -0.045 (-0.085 to -0.004) | -0.047 (-0.073 to -0.021) |
WBLH | ||||
Baseline | 1.077 (0.123) | 1.041 (0.134) | 1.057 (0.083) | 0.951 (0.112) |
Follow-up | 1.131 (0.114) | 1.105 (0.130) | 1.072 (0.088) | 0.979 (0.085) |
Mean of change | 0.054 (0.041) | 0.064 (0.042) | 0.015 (0.018) | 0.028 (0.036) |
Mean of change adjusted# | 0.065 (0.047 to 0.082) | 0.059 (0.048 to 0.071) | 0.039 (0.024 to 0.054) | 0.017 (0.007 to 0.026) |