Pubertal adolescents were randomly assigned to receive 8
g/d of a mixed short and long degree of polymerization inulin-type
fructan product (fructan group) or maltodextrin placebo (control
group). Bone mineral content and bone mineral density were mea-
sured before randomization and after 1 y. Calcium absorption was
measuredwiththeuseofstableisotopesatbaselineand8wkand1y
aftersupplementation.PolymorphismsoftheFok1vitaminDrecep-
tor gene were determined.