[Dietary habits and physical activity in a secondary school in the Balearic islands].

Objective: To evaluate the changes in dietary habits and physical activity, as well as the prevalence of obesity and overweight that have occurred in a cohort of 1st and 4th year secondary school pupils after non-structured health education activities.

Method: A descriptive, longitudinal study, in which anthropometric variables, dietary habits, leisure and physical activity were collected in the 1st year secondary school pupils (n=61), and they were measured again when they were in the 4th year. The differences between the two school years were analysed using the Mc Nemar-Bowker Test.