Multimedia Hydration Education During Physical Education in Schoolchildren

Here's a plain-language Brief Summary ready to paste - it follows the PRS lay-language style (short sentences, explains the "why," avoids jargon) and fits well within 5,000 characters: Staying well hydrated helps children stay healthy and concentrate, and it matters most during physical activity. Yet many young children do not drink enough water during physical education (PE) lessons, and some begin the school day already short of fluid. This study tested whether a short, fun teaching programme could help young children learn about hydration and drink more during PE. The programme used slideshows with simple words, pictures, and short animations, delivered by the children's own teacher for 15 minutes at the start of each PE class, once a week for six weeks. The study took place in two public primary schools in Sfax, Tunisia, and involved 204 first-grade children aged 6 to 7 years. Twelve classes took part. Whole classes (not individual children) were placed by chance into one of two groups: six classes received the teaching programme, and six classes continued their usual PE with no hydration lessons. Comparing whole classes in this way is called a cluster-randomized trial. The researchers measured three things each week: how much the children knew about hydration (using a simple yes/no questionnaire), whether they drank water during the PE session, and the small change in each child's body weight across the session, which is an indirect sign of fluid loss. The aim was to see whether learning about hydration in an engaging way actually changes children's drinking behaviour during activity, not just what they know.

Inclusion Criteria: * Enrolled in a first-grade class at a participating school * Signed parental/guardian informed consent * Able to attend all planned data-collection sessions Exclusion Criteria: * Exemption from physical education for medical or injury-related reasons * Grade repetition * Absence from one or more data-collection sessions