System for Quantifying the Functional Strength of the Grip and Pinch Movements

University of Mogi das Cruzes

Status: Completed

Conditions: Hand Injuries and Disorders

Treatments: Device: Door Key device; Device: Door pull handle; Device: Door handle device; Device: Linear Switch device; Device: handgrip strength; Device: Tap device

Study type: Interventional

Funder types: Other

Identifiers

NCT04174729

19020219.2.0000.5497

Details and patient eligibility

About

This study developed a system to quantify the functional strength of young adults without motor impairment during grip and pinch movement. Making it possible to know the accuracy of the value of these strength, the range of motion performed and whether the grip force was maintained throughout the range of motion. In addition to checking the functionality, reliability and reproducibility of the system.

Full description

Quantifying grip and grip movement is essential as it allows for a basis in upper limb functionality. However, when there is access, it causes changes in the hands and changes the motor in relation to the force and range of motion, or generates changes in activities of daily living. Thus, a system with 5 devices, where each one the devices were prints in three-dimensional, and instrumented with force sensor for static-dynamic force analysis e potentiometer for analysis range of motion, during the execution of movements cylindrical grip, spherical grip, hook grip, pulp-pulp pinch, and pulp- side pinch in different activities of daily living. Elaborated a data storage interface through MATLAB® software that allows recording the data of each device. For the system functionality tests, 30 volunteers were selected for both sexes, young adults between 20 and 39 years old, students of the Physiotherapy and Graduate courses of the University of Mogi das Cruzes. The tests are divided into two sessions and are repeated after 7 days of the first test

Enrollment: 30 patients

Sex: All

Ages: 20 to 39 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• only right-handed individuals,
• male and female,
• have preserved cognitive functions,
• absence of neurological disorder
• who present minimum grip strength by the Jamar ® dynamometer, in the age group of 20-29 years men 45.08 ± 0.67 kg and women of 27.2 ± 0.46 kg, who present minimum grip strength by the dynamometer Jamar ®, aged 30 to 39 years old men 46.05 ± 0.47 kg and women 28.0 ± 0.39 kg, using the mean minus the standard deviation.

Exclusion criteria

• Injury to upper limbs such as amputation, recent surgery (6 months), fractures, bruising, pain and musculoskeletal disorders.
• Do not accept to participate in the survey.

Trial design

Primary purpose: Diagnostic

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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30 participants in 1 patient group

Hand strength

Experimental group

Description:

The tests were performed in two sessions lasting 1 hour each. The volunteers used the devices: door handle, tap, door pull handle, switch and door key to quantify hand strength. The tests were performed in two sessions lasting 1 hour each. The volunteers used the devices: door handle, tap, door pull handle, switch and door key to quantify hand strength. In the first session, the volunteers performed the movements 3 times in each device of daily living activities with the right limb, with a 1-minute rest interval between the 3 measurements. The entire procedure performed in the session was repeated again after 30 minutes to verify the reliability and reproducibility of the Intra-evaluator test. The Inter-rater test was repeated after 7 days by the second rater to analyze reliability between the rater.

Treatment:

Device: Door Key device

Device: Door pull handle

Device: handgrip strength

Device: Door handle device

Device: Tap device

Device: Linear Switch device