Improving Cognition Via Exercise in Schizophrenia

The goal of the proposed study is to examine the impact of exercise training on cognitive
functioning in people with schizophrenia. People with schizophrenia display a broad range of
cognitive impairments that have been identified as major determinants of poor functional
outcome and disability, thus representing an important public health concern and a target for
interventions. At present, available treatments offer only minimal to limited benefits to
ameliorate these deficits. Extensive animal and human research literatures converge in
supporting the positive influence of aerobic exercise training on cognitive functioning.
Preliminary data indicate that aerobic exercise training is effective in improving cognitive
functioning in people with schizophrenia. However, previous studies employed small samples,
focused on a single or limited range of cognitive domains, and/or collected insufficient
information on daily functioning or putative biomarkers underlying cognitive change.

Inclusion Criteria:

- A DSM-V diagnosis of schizophrenia, schizoaffective, or schizophreniform disorder.

- Age 18-55 years.

- Taking antipsychotic medication for at least 8 weeks and on current doses for 4 weeks,
and/or injectable depot antipsychotics with no change in the last 3 months.

- Capacity to understand all the potential risks and benefits of the study.

- Medically cleared by a physician to take part in VO2max tests and aerobic exercise
training or stretching-and-toning exercise training.

Exclusion Criteria:

- A DSM-V diagnosis of alcohol/substance abuse (except nicotine) within the last month
or a diagnosis of alcohol/substance dependence (except nicotine) within the last 6
months

- Initiation of anti-depressants, mood stabilizers, or other medications known to impact
cognition in previous 4 weeks or any change in doses during this period.

- History of seizures/head trauma with loss of consciousness (>10 minutes) resulting in
cognitive sequelae.

- Significant clinical abnormalities in physical examination, lab assessments, or ECG.

- Neurological/medical conditions that could interfere with study participation (e.g.,
unstable cardiac disease, stuttering).

- Body Mass Index (BMI) ≥ 40.

- Untreated hyper- or hypothyroidism.

- Being pregnant or nursing.

- Serious homicidal/suicidal risk (past 6 months).

- "Moderate" or more severe conceptual disorganization (PANSS≥4).

- Poor English reading ability (WTAR<7).

- Participation in a study with cognitive assessment in the past 3 months.