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. 2021 Jul 1;2021(7):CD003586. doi: 10.1002/14651858.CD003586.pub4

Park 2015.

Study characteristics
Methods RCT
Setting: South Korea
Participants Inclusion criteria for participation were as follows: (1) left hemiparesis with onset duration > 6 months; (2) patient with unilateral neglect (> 6.3 mm deviation of the true centre of the line in the line bisection test); (3) cognition (> 23 points on the Korean version of Mini‐Mental Status Examination); (4) no hemianopsia or apraxia; and (5) imagination ability (average score < 3 in the Vividness of Movement Imagery Questionnaire)
Age, years, mean (SD): intervention = 61.5 (5.1), control = 63.6 (6.0) 
Sex (men/women): intervention = 8/7, control = 6/9 
Hemisphere damaged: right
Time since stroke, months: intervention = 6.8 (0.9), control = 6.9 (1.0)
Interventions Participants received a mental practice intervention or usual care. During mental practice, experimental group (EG) participants mentally practised positioning and movement of the left upper limb as intensively as possible in a repetitive fashion. EG participants sat comfortably and leaned back against the back rest with feet on the floor and imagined the scene while listening to the voice of the researcher for 10 minutes with eyes closed. Contents of mental practice were to pick up a baseball, a pencil, and a coin at the centre of a body using the left hand, respectively, then move them into a basket lying on the left side. Verbal feedback provided by participants assured correct execution of imagery tasks. Each task was repeated up to 10 times per session. At the beginning of each task, break time was given to patients to induce relaxation and concentration internally on the left arm. EG participants received mental practice for additional 10 minutes (5 days a week for 4 weeks)
Outcomes
  • Line bisection

  • Star cancellation


All taken immediately post intervention with no longer‐term follow‐up
Notes  
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Low risk Based on a computer‐generated randomisation programme by a research assistant under the blind condition
Allocation concealment (selection bias) Unclear risk No detail given
Blinding of participants High risk No detail given
Blinding of personnel High risk No detail given
Blinding of outcome assessment (detection bias)
All outcomes Unclear risk All clinical measures were administered by the blinded assessor, but no detail was given
Incomplete outcome data (attrition bias)
All outcomes Low risk No incomplete data apparent
Selective reporting (reporting bias) Low risk Outcomes reported equally
Other bias Low risk Nothing obvious