Abstract
The objective was to analyze the longitudinal associations of physical activity
(PA) and Sedentary behavior (SB) on bone health indicators (BHI) in healthy
young adults. Articles were selected from five databases and 17 longitudinal
studies were selected after meeting the inclusion and exclusion criteria. Among
these, only one study assessed the association between childhood PA and adult
BHI, the results showed no significant association between PA and BHI. Positive
associations between adolescence and adulthood were observed between PA with
bone mineral content and density and bone microarchitecture. In adulthood, the
results were divergent; among the three studies located, two found a positive
association. SB was negatively associated with bone mineral density and content
from childhood to adulthood. However, from adolescence to adulthood, it was
negatively associated with total tibia area but positively associated with
trabecular thickness, cortical thickness, and cortical bone mineral. The
evidence of the positive effect of PA and its intensities between adolescence
and adulthood on BHI seems to be more consolidated, and it is still necessary to
understand the role of intensities, volume of PA and SB in different periods of
life with BHI in adulthood.
Keywords
Bone density - Motor activity - Sedentary lifestyle - Longitudinal studies