A fast-moving target in the Valpar assembly task improved unimanual and bimanual movements in patients with schizophrenia

Shu Mei Wang, Li Chieh Kuo, Wen Chen Ouyang, Hsiao Man Hsu, Hui Ing Ma

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Purpose: To investigate the effects of target speed on unimanual and bimanual movements during a bimanual prehension and assembly task in patients with mild schizophrenia and healthy controls. Method: Fifteen patients with schizophrenia and 15 age- and gender-matched healthy controls were instructed to reach and assemble spacers with both hands for a target that moved at two speeds: fast or slow. Dependent variables were movement kinematics: movement time, number of movement units and timing intervals between both hands. Results: A fast-moving target induced shorter movement times, fewer movement units and shorter timing intervals than did a slow-moving target for patients. Under the slow-target condition, patients had longer movement times and a longer timing interval during prehension, as well as longer movement times, more movement units and a longer timing interval during assembly than did controls. Under the fast-target condition, patients still had slower and less-synchronized prehension than did controls, but their assembly improved to a level similar to that of controls. Conclusions: A fast-moving target induced faster, smoother and more synchronized movements than did a slow-moving target for patients with schizophrenia, especially during assembly.Implications for RehabilitationA fast-moving target might elicit faster, smoother, and more synchronized movements than might a slow-moving target during a bimanual assembly task for patients with mild schizophrenia.The findings of impaired movement kinematics under the slow-target condition suggest that patients with schizophrenia need movement training.

Original languageEnglish
Pages (from-to)1608-1613
Number of pages6
JournalDisability and Rehabilitation
Volume35
Issue number19
DOIs
Publication statusPublished - 2013 Sep

All Science Journal Classification (ASJC) codes

  • Rehabilitation

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