The increasing rate of usage of smartphones ushers in various health problems and smartphone addiction. In the literature, the research focused mainly on the relationship between smartphone addiction and depression, anxiety and musculoskeletal system problems; however, the number of studies on fatigue was limited. We believe that this paper will be of interest to the readers of your journal because it adds information about the effect of smartphone addiction on physical activity, on sleep quality and especially on fatigue.

This cross-sectional study was conducted with the participation of 322 students attending the Faculty of Health Sciences at Süleyman Demirel University. The participants were given the socio-demographic characteristics form, developed by the researchers according to the literature review. They were also given the evaluation form, which surveys some variables related to smartphones, as well as the short version of the Smartphone Addiction Scale Short Version (SAS-SV), the International Physical Activity Questionnaire-Short Form (IPAQ-SF), the Pittsburgh Sleep Quality Index (PSQI), and the Piper Fatigue Scale (PFS).

Inclusion Criteria:

• The students who volunteered to participate in the study after being informed about the aims and procedures of the study.

Exclusion Criteria:

• The students who didnot volunteered to participate in the study after being informed about the aims and procedures of the study.

University Students