PA correlates/determinants were relatively consistent between objective and subjective PA measures .
A small number of demographic/biological and social/cultural factors were associated with PA .
CONTEXT Being physically active during the early years ( age 0 - 6 years ) is vital for healthy development .
Identifying correlates and determinants of physical activity ( PA ) is crucial to guide effective interventions .
This systematic review synthesized studies investigating potential correlates and determinants of PA during the early years , accounting for different types of PA assessment .
Dietary intakes and physical activity among preschool-aged children living in rural American Indian communities before a family-based healthy lifestyle intervention.
OBJECTIVE To report dietary intake and physical activity among preschool-aged children living in rural American Indian communities before participation in a family-based healthy lifestyle intervention  and to compare data to current age-specific recommendations . SUBJECTS/ DESIGN One hundred thirty-five preschool-aged children , living in rural American Indian communities , provided diet and physical activity data before participating in a 2-year r and omized healthy lifestyle intervention .  Three 24-hour dietary recalls assessed nutrient and food and added sugar intake , which were compared to the National Academy of Science 's Dietary Reference Intakes , the US Department of Agriculture 's MyPyramid , and American Heart Association recommendations . Time watching television and moderate plus vigorous activity was compared to MyPyramid and American Academy of Pediatrics recommendations . STATISTICAL ANALYSIS Nutrient , food group , added sugar intake , and time watching television and in moderate or vigorous activity  were compared to recommendations by computing the percent of recommendations met . Nonparametric tests identified differences in diet and physical activity among age groups and normal and overweight children ( body mass index < 85th and > or = 85th percentile ) . RESULTS Average nutrient intakes met recommendations whereas food group intakes did not . Mean fruit and vegetable intakes for 2- to 3-year-olds were 0.36 c/day fruit and 0.45 c/day vegetables and , for 4- to 5-year-olds , 0.33 c/day fruit and 0.48 c/day vegetables . Both age groups reported consuming more than 50 g added sugar , exceeding the recommendation of 16 g. Overweight vs normal weight children reported significantly more sweetened beverage intake ( 8.0+/-0.10 vs 5.28+/-0.08 oz/day , P<0.01 ) . On average , all children reported watching television 2.0 hours/day and significant differences were observed for total television viewing and nonviewing time between overweight and normal weight children ( 8.52+/-0.6 vs 6.54+/-0.6 hours/day , P<0.01 ) . All children engaged in < 20 minutes/day of moderate or vigorous activity . CONCLUSIONS Overall , children in this sample did not meet MyPyramid recommendations for fruits or vegetables and exceed added sugar intake recommendations . Television viewing time and time when the television was on in the home was highly prevalent along with low levels of moderate or vigorous activity . The Healthy Children Strong Families intervention we studied has potential for improving nutrition and physical activity among preschool-aged children living in rural American Indian communities
PA correlates/determinants were relatively consistent between objective and subjective PA measures .
A small number of demographic/biological and social/cultural factors were associated with PA .
CONTEXT Being physically active during the early years ( age 0 - 6 years ) is vital for healthy development .
Identifying correlates and determinants of physical activity ( PA ) is crucial to guide effective interventions .
This systematic review synthesized studies investigating potential correlates and determinants of PA during the early years , accounting for different types of PA assessment .