Cohabitation and marriage during the transition between adolescence and emerging adulthood: A systematic review of changes in weight-related outcomes, diet and physical activity.

(2018) found a U-shape trajectory for the consumption of fruits and vegetables, with a decreasing trend between 15 and 20 years and an increasing trend between 20 and 30 years. 3.2 BMI Of five articles that included BMI as the outcome, three studies included measured body mass and stature ( Burke, 2004 , Chung et al., 2014 , Kroeger and Frank, 2018 ), while two studies included self-reported measures ( Averett et al., 2008 , The and Gordon-Larsen, 2009 ).

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On the other hand, the majority of the studies found that physical activity levels were stable for the whole group overtime ( Bell and Lee, 2005 , Brown et al., 2009 , Hull et al., 2010 ), with only two studies pointing a slight trend for decreasing overtime for the whole sample ( Miller et al., 2019 , The and Gordon-Larsen, 2009 ) and one study showing a decrease only among men ( Burke, 2004 ).

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