Interrelationships between psychological factors, overweight, and blood pressure in adolescents.

Relationships between psychological factors and physical factors such as body mass, overweight, and blood pressure were examined in a sample of black and white adolescents enrolled in health science courses. Black female adolescents were significantly more overweight and obese than either other group. Psychological factors were not significantly associated with body mass (weight/height) for females. A small percentage of the variance in body mass for black (6%) and white (4%) males was explained by Trait Anger, the frequent experience of anger and the intensity of anger (S-Anger-Reaction/TP) in pressure situations. Trait Anger also significantly (p less than 0.01) discriminated between black male adolescents who were normal weight and those 20% overweight for age and height. The relationships between traditional risk factors and blood pressure among adolescents who were 20% underweight, normal weight, and 20% overweight for age and height suggest that few traditional risk factors contribute significantly to the prediction of blood pressure in overweight adolescents. In contrast, psychological measures of suppressed anger (Anger-In, Anger Expression) were significantly (p less than 0.001) associated with blood pressure among overweight adolescents. The findings regarding the associations between overweight and psychological factors are complex. Prospective studies using better measures of overweight are needed to clarify the processes involved.