Table 4

Effect of the physical activity on BMD at follow up
Variable Coefficient estimate Standard error P- value
BMD baseline 0.966 0.02 <0.001
<a onClick="popup('http://www.biomedcentral.com/1471-2431/13/32/mathml/M11','MathML',630,470);return false;" target="_blank" href="http://www.biomedcentral.com/1471-2431/13/32/mathml/M11">View MathML</a> 0.009 0.001 <0.001
Height follow up 0.001 0.0002 <0.001
Log(weight follow up) 0.039 0.008 <0.001
Gender 0.017 0.005 0.001
Puberty follow up 0.016 0.002 <0.001
Gender # puberty1 −0.014 0.003 <0.001
Intercept −0.150 0.018 <0.001

Note: πmhl represents the percentage of the total time spent in, moderate-high and low intensity activity respectively. #: Interaction. The girls were chosen as the reference level for gender.

Heidemann et al.

Heidemann et al. BMC Pediatrics 2013 13:32   doi:10.1186/1471-2431-13-32

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