The relationships among body size, biological sex, ethnicity, and healthy lifestyles in adolescents.

PURPOSE. The purposes of this study were to (a) determine whether actual weight, biological sex, and race/ethnicity were related to differences of weight perception, nutrition and activity knowledge, perceived difficulty, attitudes, and choices about living a healthy lifestyle in adolescents; and (b) describe the relationships among these variables. DESIGN AND METHODS. This was a cross-sectional descriptive, correlational design with 404 adolescents. RESULTS. Perception of weight was more accurate in overweight adolescents. Teens who reported difficulty in leading a healthy lifestyle reported less healthy choices, attitudes, and knowledge. PRACTICE IMPLICATIONS. Findings suggest tailored interventions should consider biological sex and race/ethnicity.