Validation and Test-retest Study of the Star-shaped Manual Dexterity Test.

Herlev Hospital

Status: Completed

Conditions: Manual Dexterity

Treatments: Other: Stress; Other: Stretched arm test; Device: Star shaped manual dexterity test

Study type: Interventional

Funder types: Other

Identifiers

NCT02146443

STAR-222

Details and patient eligibility

About

The purpose of this study is to measure test-retest reliability and validate the star shaped test of manual dexterity. The purpose of this is to see if there is any significant learning effect, and if the test can discriminate between individuals who are at their normal skill level, and when they are stressed and/or fatigued. The test is designed to test hand to eye coordination and precision control. This is done by following a star shaped track with a pair of a surgical scissors. this is done 10 times, 5 times clockwise and 5 times counter clockwise. Each time the scissors come into contact with the border of the track, an error is counted. Overall completion time is recorded. As a randomized crossover study, we will have 20 test subjects complete the test 4 times. Each test will be conducted with a pause of two breaks between the tests. Before each test, the test subjects are randomized to: no intervention, physical fatigue prior to testing, distractions during the test or both physical fatigue prior to testing and distractions during the test. All participants will complete a test with all four interventions. Furthermore, a test-retest trial will be conducted on 4 test-subjects. Each subject will complete the test two times with no interventions, with two days apart.

Enrollment: 31 patients

Sex: All

Ages: 20 to 55 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Age between 20 and 55 years

Exclusion criteria

• Diagnosed heart disease
• Diagnosed endocrinological disease
• Diagnosed Neurological or autoimmune disease
• Diagnosed Sleep disorder
• Diagnosed orthopedic diseases or former orthopedic surgery (e.g. arthrosis, rotator cuff syndrome)

Trial design

Primary purpose: Basic Science

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Single Blind

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31 participants in 4 patient groups

Baseline

Active Comparator group

Description:

Completion of the star shaped manual dexterity test, five rounds clockwise and five rounds counter clockwise without any intervention. Time and number of errors are recorded. Measurement of static arm strength with the stretched arm test. test subject is asked to hold a 2.5 kg weight in stretched arm for as long as possible. Maximum endurance time is recorded.

Treatment:

Other: Stretched arm test

Device: Star shaped manual dexterity test

Fatigue

Active Comparator group

Description:

Prior to completion of the star shaped manual dexterity test, the test subject is asked to stand up still and hold a 2.5-kg weight with the dominant arm fully extended as long as possible without moving. Maximum endurance time is recorded. After this, the test subject completes the the star shaped manual dexterity test and time and number of errors are recorded.

Treatment:

Other: Stretched arm test

Device: Star shaped manual dexterity test

Stress

Active Comparator group

Description:

During completion of the star shaped manual dexterity test, the test subject is asked to identify cards from a regular deck of playing card by naming the suit and rank of the card. They will be asked to identify one random card during each of the 10 rounds in the completion of the test. Completion time and number of errors are recorded.

Treatment:

Other: Stress

Device: Star shaped manual dexterity test

Fatigue and Stress

Active Comparator group

Description:

The test subject will be fatigued prior to the test (as detailed in the fatigue arm), and asked to identify cards during completion of the star shaped manual dexterity test (as detailed in the stress arm). Completion time and number of errors are recorded.

Treatment:

Other: Stress

Other: Stretched arm test

Device: Star shaped manual dexterity test