Aphasia Therapy: Factors of Efficacy


Phase N/A Results N/A

Trial Description

Constraint-induced aphasia therapy (CIAT) has proven effective in stroke patients. It has remained unclear, however, whether intensity of therapy or constraint is the relevant factor. This study will give an answer to this question to improve speech and language therapy.

Detailed Description

Although there is clear evidence that aphasia therapy is effective, questions remain as to the intensity of administered therapy, the preferred therapeutic approach and its initiation with regard to stroke onset. CIAT is a a high intense group therapy administered over 2 weeks. Additionally, patients have to communicate solely in spoken words or sentences (constraint). This study compares CIAT with an approach of the same intensity without constraints and a less intense house-typical therapeutic approach.



  • Control group Other
    Other Names: conventional training
    Intervention Desc: This is the control group with 14 h treatment over 10 workdays.
    ARM 1: Kind: Experimental
    Label: Control group
    Description: Patients received a standard, house-typical aphasia therapy in single and group therapy sessions
  • CIAT-group Other
    Intervention Desc: Examine the efficacy of CIAT (30 h over 10 workdays) versus Control-group and communication treatment group.
    ARM 1: Kind: Experimental
    Label: CIAT-group
    Description: Patients received constraint-induced aphasia therapy.
  • Communication treatment group (CTG) Other
    Intervention Desc: Examine the efficacy of CTG (30h over 10 wokrdays) versus CIAT-group and control group
    ARM 1: Kind: Experimental
    Label: communication treatment group (CTG)
    Description: Patients received aphasia group therapy without constraints

Trial Design

  • Allocation: Randomized
  • Masking: Single Blind (Outcomes Assessor)
  • Purpose: Treatment
  • Endpoint: Efficacy Study
  • Intervention: Parallel Assignment


Type Measure Time Frame Safety Issue
Primary Change of aphasia by Aachener Aphasia Test (AAT) pretreatment and within 24 h post intervention No
Secondary Change of Communication Activity Log (CAL) pretreatment and within 24 h post intervention No