“…Despite the seriousness of the problem of depression in pregnancy, still very few papers assess the impact of physical activity in pregnancy on the development of depression in this period [41,42,43,44,45,46,48,49,50,51,52,53,55,56,57,58,59]. However, the results of this review clearly suggest that even a small amount of physical activity during pregnancy may reduce the severity of depressive symptoms, as well as the occurrence of depression.…”