Psychosocial variables influence physical activity for different age groups, sex, and ethnic groups. However, little is known about their influence on physical activity in preadolescent Latino children. The authors examined how a) confidence in one's ability to be physically active (selfefficacy); b) ideas about the consequences of being physically active (beliefs), and c) the influences of family and friends on physical activity (social influences) effect physical activity levels in overweight (body mass index ≥85%) Latino preadolescent children. One hundred and fourteen preadolescents participated in a larger intervention designed to improve healthy lifestyles for Latino families. The authors report baseline data collected at a community-based primary care clinic. Multivariate regression analyses showed that only social influences significantly predicted (P < .01) the metabolic equivalent adjusted self-reported baseline physical activity. Prevention and intervention strategies that augment social influences on physical activity are likely to result in more physical activity and improved health in these children.Keywords social influences; body mass index; obesity; Hispanic Americans Obesity, now an epidemic in US children, disproportionately affects Latino children as prevalence rates are higher in Latino children than in their African American or Caucasian counterparts. 1,2 However, despite this increased disease burden, few studies have described overweight Latino children.Increased energy intake and decreased energy expenditure are primary contributors to obesity. Because Latino children of all ages have more inactivity and less moderate and vigorous activity than other ethnic groups, 3 increasing physical activity is likely to be a particularly effective target for obesity interventions in this population. Psychosocial variables, including a) confidence in one's ability to be physically active (self-efficacy), b) Studies examining the psychosocial determinants of physical activity have primarily described adults 6-8 and adolescents, 9-14 fewer have focused on younger children, such as preadolescents. Studies of Latino adults have shown the importance of social and family support. 6,7 In addition, studies of adolescents have shown the association between selfefficacy and positive beliefs with directly measured physical activity. 5 However, the role that these psychosocial variables play in determining the level of physical activity in Latino preadolescent children, particularly, in those who are obese, remains unknown.
HHS Public AccessThe strong influence of family in the Latino community suggests that intervening on selfefficacy, beliefs, and social influences, all of which can be shaped by family influences and parenting, may have a significant and synergistic effect on reducing risk behaviors. This is likely to be true especially in the preadolescent period, which constitutes a period of significant physical, cognitive, and psychosocial development. 15 Therefore, the preadolescent period offers...