The effect of physical activity on mental health among adolescents with and without self-reported visual impairment: The Young-HUNT Study, Norway

The purpose was to study the effect of physical activity (PA) on mental health according to self-reported vision categories among adolescents. The study was conducted in Nord-Trondelag, Norway, during the period 1995-1997, with a follow-up 4 years later. Self-reported measurements were used to assess PA and vision at baseline, and mental health problems and well-being at follow-up. The main linear regression analyses included 1417 adolescents between the age of 12 and 17 years, of which 46 had reported visual impairment. Among those reporting no impairment, conducting < 1 day per week of PA was significantly associated with having lower levels of well-being at follow-up compared to those conducting. 1 day of PA. Among those reporting visual impairment, the mental health benefits of conducting weekly PA compared with conducting non-weekly PA were observed only among those who were more emotionally unstable or introvert at baseline. In conclusion, further longitudinal studies are warranted to examine whether the mental health responses of PA may be dependent on the adolescent's vision status.