Effects of multitask training on cognition and motor control in people with schizophrenia spectrum disorders

Enhancing Cognition, Self-Efficacy, and Postural Control Skills of Persons with Schizophrenia Spectrum Disorders Using Immersive Puzzle Video Games

Introduction: Players' engagement in video games is dependent on their level of immersion in the virtual gaming environment. Tabletop (TT) puzzle video games (PVGs), which are usually played in a sedentary posture and require upper limb motor skill, improve players' cognition and upper limb motor performance. Immersive PVGs, such as Angry Birds, have been created recently. These games are played in a standing mode and require the players to shift their center of gravity (COG) to achieve the gaming goals. Their task-oriented nature makes it possible for these video games to improve players' self-efficacy. However, there is a lack of research into the cognitive, upper and lower limb motor performance, capacity to shift the COG, that is, stability limit, and self-efficacy benefits of immersive PVGs played in standing mode. Objectives: This study examined the effects of an immersive physics-based PVG (PBPVG), the Angry Birds, on cognition, motor outcomes, and self-efficacy. Immersive video games were developed in order to enable a high level of immersion and engagement. We hypothesized that following three sessions per week for 12 weeks of training, players would demonstrate improvements in cognition, upper and lower limb motor performance, stability limit, and self-efficacy. Methods: A sample of 82 adults with schizophrenia spectrum disorders recruited from two psychiatric rehabilitation units were assigned by lottery randomization to an experimental group or a control group (n = 41 respectively). Participants in the experimental group played Angry Birds in standing mode for three 50-minute sessions per week for 12 weeks. Processing speed and cognitive flexibility (two critical components of integrated cognition), upper and lower limb motor performance, stability limit, and self-efficacy were evaluated at baseline and at 12 weeks. Results: A repeated measures two-way analysis of variance revealed significant interaction effects (P = 0.021-P < 0.001) with medium to large effect sizes (ηp2 = 0.064-0.241) for stability limit and self-efficacy. Significant main effects (P < 0.001) with medium to large effect sizes (ηp2 = 0.095-0.277) for processing speed and upper and lower limb motor performance were found. The following simple main effects examined with one-way analysis of covariance showed significant improvement (P < 0.001) with medium to large effect sizes (ηp2 = 0.151-0.249) for stability limit and self-efficacy. A near significant difference (P = 0.063) with a near medium effect size (ηp2 = 0.040) showed improvement in cognitive flexibility, but nonsignificant improvement (P > 0.05) with a trivial effect size (ηp2 = 0.001) for processing speed and a small effect size (ηp2 = 0.021-0.027) for upper and lower limb motor performance were found. Conclusion: PBPVGs could improve cognitive flexibility, stability limit, and self-efficacy. These effects might depend on the level of immersion, type of motor skill and body part involvement, and demands of cognitive components when playing, which might stem from the task-oriented nature of the chosen game and gaming mechanism.

The Effect of Computerized Cognitive Training on Body Function and Activity Participation of Patient with Schizophrenia

Schizophrenia spectrum disorder (SSD) is a neurobiological illness that causes considerable deficits in body functions and activity participation. This study examined the effects of a computerized cognitive training (CCT) on cognition, motor functions and activity participation with a quasi-experimental, pretest-posttest design. A total of 14 patients participated. All participants underwent two stages of CCT but one did not complete the posttest. The training was 3 times a week, 40 minutes each time and lasted for 12 weeks. Cognition, upper extremity motor, postural control performance, and activity participation (work behavior) were measured at three times: before and after 6 and 12 weeks of training. CCT improved participant's cognition and work behavior significantly and have the tendency to improve motor function. The training dosage might be insufficient for motor function improvement.Clinical Relevance- SSD patients benefit from the CCT in cognition and work behavior significantly but Motor function slightly.