Published online by Cambridge University Press: 24 June 2014
Background: Yoga therapy (YT) improves cognitive function in healthy individuals, but its impact on cognitive function among persons with schizophrenia (SZ) has not been investigated.
Objective: To evaluate the adjunctive YT for cognitive domains impaired in SZ.
Methods: Patients with SZ received YT or treatment as usual (TAU; n = 65, n = 23, respectively). Accuracy and speed for seven cognitive domains were assessed using a computerised neurocognitive battery (CNB), thus minimising observer bias. Separately, YT was evaluated among patients with bipolar I disorder (n = 40), major depressive disorder (n = 37) and cardiology outpatients (n = 68). All patients also received routine pharmacotherapy. Patients were not randomised to YT or TAU.
Results: In comparison with the SZ/TAU group, the SZ/YT group showed significantly greater improvement with regard to measures of attention following corrections for multiple comparisons; the changes were more prominent among the men. In the other diagnostic groups, differing patterns of improvements were noted with small-to-medium effect sizes.
Conclusions: Our initial analyses suggest nominally significant improvement in cognitive function in SZ with adjunctive therapies such as YT. The magnitude of the change varies by cognitive domain and may also vary by diagnostic group.
The following Supporting information is available for this article:
Table S1. Effect sizes of changes in pre- and post-therapy values for cognitive domains in the schizophrenia yoga therapy (21 days) and treatment as usual groups (2 months)
Table S2. Effect sizes of changes in pre- and post-therapy values for cognitive domains in the bipolar disorder yoga therapy
Table S3. Effect sizes of changes in pre- and post-therapy values for cognitive domains in the major depressive disorder yoga therapy
Table S4. Effect sizes of changes in pre- and post-therapy values for cognitive domains in the cardiac controls yoga therapy
Table S5. Effect sizes of changes in pre- and post-therapy values for cognitive domains in the schizophrenia yoga therapy (2 months) and treatment as usual groups (2 months)
Additional Supporting information may be found in the online version of this article.
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