The investigator assumed that perturbed-event-induced vibrotactile cueing enable more precision arm movement adjustment, sensory function and dexterity improvement in the spastic arm. Thus the specific aim of the study was to develop a vibrotactile therapy system that can provide vibrotactile feedback through the pinch performance of the hand when countering mechanically induced perturbations and also analyzed training effects of the perturbation-based pinch task training system on the sensorimotor performance of the hands for stroke patients.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
20
The perturbation-based pinch task training was conducted with the affected hand placed on the pinch device. The horizontal vibratory perturbation was generated for a total of 20 minutes by two recoil-type actuators with a frequency of 30 Hz and an amplitude of 2 mm, and intermittent exposure (10 s per 30 s). Each training session was divided into eight cycles with a training interval of 2 min per 2.5 min.
Reach-to-grasp training and hand release training
Targeted to goals that are relevant to the sensorimotor facilitation of the patient
National Cheng-Kung University Hospital
Tainan, Taiwan
Change in the result of Fugl-Meyer assessment for UE motor function
Each item is rated on a three-point ordinal scale (2 points for the detail being performed completely, 1 point for the detail being performed partially, and 0 for the detail not being performed). The maximum motor performance score is 66 points for the upper extremity.completely, 1 point for the detail being performed partially, and 0 for the detail not being performed). The maximum motor performance score is 66 points for the upper extremity.
Time frame: baseline, endpoint (6 weeks) and follow up (18 weeks)
Change in the result of Modified Ashworth scale (MAS)
Muscle tone is defined by the resistance of a muscle being stretched.The tester graded the resistance felt, with a single score. The higher values represent a worse outcome. 0 point for no increase in muscle tone; 1 point for slight increase in muscle tone, manifested by a catch or by minimal resistance at the end of the range of motion (ROM) when the affected part is moved in flexion or extension; 1 + for slight increase in muscle tone, manifested by a catch, followed by minimal resistance throughout the remainder (less than half) of the ROM; 2 point for more marked increase in muscle tone through most of the ROM, but affected parteasily moved, 3 point for considerable increase in muscle tone and passive movement difficult; 4 point for affected part rigid in flexion or extension.
Time frame: baseline, endpoint (6 weeks) and follow up (18 weeks)
Change in the result of Box and blocks test
The score is the number of blocks carried from one box to the other in one minute. Higher values represent a better outcome.
Time frame: baseline, endpoint (6 weeks) and follow up (18 weeks)
Change in the result of Semmes-Weinstein monofilament (SWM) test
The Semmes-Weinstein monofilamenttest examines the cutaneous pressure threshold, range from 1.65-6.65. Higher values represent a worse outcome.
Time frame: baseline, endpoint (6 weeks) and follow up (18 weeks)
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Change in the result of Motor Activity Log
MAL is a structured interview with testing sensitivity used to examine how much (amount of use, AOU) and how well (quality of movement, QOM) the subject uses their more-affected arm. For the 30 items MAL, each item is scored on a 0-5-ordinal scale.
Time frame: baseline, endpoint (6 weeks) and follow up (18 weeks)