doi:10.3390/ijerph17124336engRomero-Rodríguez, J.-M.Aznar-Díaz, I.Marín-Marín, J.-A.Soler-Costa, R.Rodríguez-Jiménez, C.Impact of problematic smartphone use and Instagram use intensity on self-esteem with university students from Physical EducationART-2020-118364Mobile devices are a revolutionary element that offer many possibilities, although they can also cause problems for users. This is the case with the development of addictive behaviors that can affect personal well-being. The purpose of this paper has been to analyze the influence of smartphone addiction and Instagram use intensity on the self-esteem of Physical Education students. A cross-sectional research design was adopted by applying an online survey to a sample of undergraduate students (n = 385). The results showed that gender and age were factors that influenced the problematic use of the smartphone. In turn, there was a significant positive correlation between smartphone addiction and Instagram use intensity. The influence of smartphone addiction on students’ self-esteem was also highlighted. In contrast, Instagram use intensity did not affect self-esteem. Finally, the findings are discussed, and the main implications of the study are established, where physical education students take on a special role in order to avoid the improper use of smartphones and Instagram through sport.2020http://zaguan.unizar.es/record/8998610.3390/ijerph17124336http://zaguan.unizar.es/record/89986oai:zaguan.unizar.es:89986International Journal of Environmental Research and Public Health 17, 12 (2020), 4336 [10 pp.]byhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccess