MOISTURIZE YOURSELF

Abstract

This study integrates two different curriculum subjects at Colégio Bandeirantes in São Paulo: Physical Education and Chemistry Laboratory - introducing an educational practice focused on the links between the themes Hydration and Mineral Salts. The purpose and emphasis is in the importance of interdisciplinary and the skills development and capacity multiples. In Physical Education classes, students do a physical exercise circuit by approximately twenty minutes and learn to relate intensity and duration of physical effort to water losses. In addition, the students can plan a strategy of theirs hydration in physical activity. In Chemistry Laboratory classes, the students learn the meaning of the terms isotonic, hypertonic and hypotonic and experimentally verify the presence of ions in several liquids solutions. According to the literature, in a short and low intensity activity, as this pedagogical practice, there is an increase in body temperature and less water is lost. In this case the water is the most efficient replenishment. The practitioners stopped a physical activity due to inefficient thermoregulation. Moreover, the advertisement can have persuasive power over teenagers presenting several beverages with different isotonic brands as possible ideal replenishments of water and minerals, in comparison to the effects produced by the water. By the years of this Hydration study, it was noticed the students indicated isotonic as the most appropriate drink to be consumed before and after the physical exercise proposed. At that time there was a dull number of advertisements about those liquids. Over the years, students referred to water as the best replenishment in exercise situation. It seemed to coincide with a decrease in the amount of targeted advertisements when using isotonic. Also this work encourages a discussion of these themes.