Sujets)
Humains , Mâle , Femelle , Adulte , Adulte d'âge moyen , Vitamine D/administration et posologie , Carence en vitamine D/traitement médicamenteux , Cognition/effets des médicaments et des substances chimiques , Compléments alimentaires , Attention/effets des médicaments et des substances chimiques , Études longitudinales , Fonction exécutive/effets des médicaments et des substances chimiques , Apprentissage/effets des médicaments et des substances chimiquesRésumé
Objective: Schizophrenia is a chronic mental illness characterized by positive and negative symptoms. Cognitive impairment continues to be a core and consistent deficit. Previous studies have shown that physical activity (PA) is positively associated with cognitive performance. Thus, it may play a supportive role in mitigating cognitive impairments among individuals with schizophrenia. The aim of this study was to analyze the relationship between moderate-to-vigorous physical activity (MVPA) and executive function among adults with schizophrenia. Methods: The weekly amount of MVPA (assessed using accelerometers) and executive function (as per Brief Neurocognitive Assessment for Schizophrenia) of 78 adults with schizophrenia (mean [SD] age 42.4 [11.4] years; illness duration 17.0 [11.0] years; 58.2% male) were assessed in this cross-sectional study. Pearson correlations were calculated, followed by a linear regression. Participants were first analyzed together and then dichotomized on the basis of illness duration. Results: There was no significant association between MVPA and executive function, independent of the duration of illness. For individuals with < 15 years of illness, there was a significant association between weekly MVPA and working memory performance. Conclusion: PA appears to be associated with executive function in some, but not all, individuals with schizophrenia.