Association of the Use of the Mobile Phone with Physical Fitness and Academic Performance: A Cross-Sectional Study.

The aim of this study was to analyse the association of the use of the mobile phone with physical fitness (PF) and academic performance in secondary school students and its gender-related differences. A total of 501 high school students participated in the study (236 girls and 265 boys; 12-18 years). Use of the mobile phone and sample distributions were done with the Mobile-Related Experience Questionnaire (CERM): low use of mobile phone (LMP = 10-15 points), medium use of mobile phone (MMP = 16-23 points) and high use of mobile phone (HMP = 24-40 points).