The influence of group physical activity on oxytocin, empathy, affect, and stress in individuals with schizophrenia spectrum disorders in a single-arm, pilot and exploratory study. - Zierhut, Marco; Hahne, Inge; Bergmann, Niklas; Grässer, Sofie; Alt, Max; Töbelmann, Laura; Wohlthan, Josefa; Huber, Viktoria; Ta, Thi Minh Tam; Bajbouj, Malek; Hahn, Eric; Böge, Kerem (Discover Mental Health, 2026)