Effect of Body Representation in Movement

Completed

Phase N/A Results N/A

Trial Description

This study explores the possible implications of the increase in perceived body size for rehabilitation of motor functions. In a recent study we have tested if motor abilities of patients with stroke improve wearing magnifying lenses, showing that a beneficial effect of magnifying lenses can be observed in some patients. In the present study, we will identify 12 patients from this cohort who demonstrated an improvement greater than 10% in one or two motor task when wearing magnifying glasses. These participants will be invited to take part in a clinical study in which they will undergo a training phase: subjects will wear magnifying lenses at home for 30 minutes daily for 14 days while completing a jigsaw puzzle; a log will be kept to document participation. Participants' performance on different motor tasks will be assessed before, immediately after and 1 month after the training session. Standardized measures of motor performance will include the the Action Research Arm test and the Rivermead Assessment of Somatosensory Performance (RASP). In addition, participants will undergo grip strength, finger tapping tasks and a reaching and grasping task. We expect the repeated use of magnifying lenses to generate an improvement of patients' performance across tasks and this effect to be persistent in time.

Detailed Description

Altering the apparent size of a body part with magnifying changes tactile acuity, tactile distance judgments and pain perception.
In a recent study we have tested if motor abilities (grip strength, finger tapping and reaching and grasping) of patients with stroke improve wearing magnifying lenses. The results of this study showed that a beneficial effect of magnifying lenses on movement can be observed in some patients with stroke. The present study aims at following up these results and investigating the possible use of magnifying lenses in the rehabilitation to improve motor controls of stroke patients.
To pursuit this aim, we will identify 12 patients in our previous study cohort who demonstrated an improvement greater than 10% in the grip strength or finger tapping task when wearing magnifying glasses. These participants will be invited to take part in the present clinical study in which they will undergo a training phase: subjects will wear magnifying lenses at home for 30 minutes daily for 14 days while completing a jigsaw puzzle; a log will be kept to document participation. Participants' performance on different motor tasks will be assessed before, immediately after and 1 month after the training session. Standardized measures of motor performance will include the the Action Research Arm test and the Rivermead Assessment of Somatosensory Performance (RASP). In addition, participants will undergo grip strength (6 trials), finger tapping tasks (6 trials) and a reaching and grasping task, inn which they will be asked to reach and grasp 3 different objects (30 trials). We expect the repeated use of magnifying lenses to generate an improvement of patients' performance across task and this effect to be persistent in time.

Conditions

Interventions

  • Magnification hand size Behavioral
    Intervention Desc: Participants will use magnifying lenses while completing a jigsaw puzzle for 30 min a day for 14 days.
    ARM 1: Kind: Experimental
    Label: Magnification hand size
    Description: magnifying lenses used for 30 minutes daily for 14 days while completing a jigsaw puzzle
  • Magnifying lenses Device
    ARM 1: Kind: Experimental
    Label: Magnification hand size
    Description: magnifying lenses used for 30 minutes daily for 14 days while completing a jigsaw puzzle

Trial Design

  • Masking: Open Label
  • Purpose: Treatment
  • Endpoint: Efficacy Study
  • Intervention: Single Group Assignment

Outcomes

Type Measure Time Frame Safety Issue
Primary Action Research Arm test Baseline, immediatelly after the training (two weeks) and after one month No
Secondary Rivermead Assessment of Somatosensory Performance Baseline, immediatelly after the training (two weeks) and after one month No
Secondary Grip strength Baseline, immediatelly after the training (two weeks) and after one month No
Secondary Finger tapping Baseline, immediatelly after the training (two weeks) and after one month No
Secondary Reach and grasping Baseline, immediatelly after the training (two weeks) and after one month No

Sponsors