Abstract
The prevalence of childhood obesity in South Africa necessitates the design and implementation of interventions to improve the levels of physical activity and nutrition among school-age children. This study aimed to evaluate the efficacy of a brief intervention to improve knowledge regarding exercise and nutrition among primary school learners in Tshwane, South Africa, using a quasi-experimental single-group, pre-post-test design. A total of 86 primary school learners from two primary schools participated in the intervention, which was guided by the Analysis Grid for Obesity-Linked Environments (ANGELO). Descriptive statistics were analysed using the frequency distribution while inferential statistics used the t-test to compare the means of nutrition and exercise knowledge pre- and post-intervention. All primary school learners were able to access the nutrition and exercise information. The mean nutrition knowledge (pre- and post-test) was 0.914 and the mean exercise knowledge (pre- and post-test) was 0.8464. The primary school learners' levels of knowledge on diet and physical exercise were improved by the brief intervention. It is recommended that this initiative be supported, continued, and duplicated in schools throughout Tshwane.