Glazebrook, C., Batty, M. J., Mullan, N., MacDonald, I., Nathan, D., Sayal, K., Smyth, A., Yang, M., Guo, B., & Hollis, C. (2011). Evaluating the effectiveness of a schools-based programme to promote exercise self-efficacy in children and young people with risk factors for obesity: Steps to active kids (STAK). BMC Public Health, 11, Article 830. https://doi.org/10.1186/1471-2458-11-830