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

Not Applicable

Completed

• Conditions: Hand Injuries and Disorders
• Interventions: Device: handgrip strength; Device: Door handle device; Device: Tap device; Device: Door pull handle; Device: Linear Switch device; Device: Door Key device

• Registration Number: NCT04174729
• Lead Sponsor: University of Mogi das Cruzes

Brief Summary

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.

Detailed 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

Study Timeline

• Study Start: 2019-08-05
• Primary Completion: 2019-09-09
• Study Completion: 2019-10-29
• Status Verified: 2019-11
• Study First Submitted: 2019-11-20
• Study First Submitted QC: 2019-11-21
• Study First Posted: 2019-11-22
• Last Update Submitted: 2019-11-29
• Last Update Posted: 2019-12-03

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 30

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.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Hand strength	Tap device	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.
Hand strength	Door pull handle	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.
Hand strength	handgrip 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. 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.
Hand strength	Door handle device	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.
Hand strength	Linear Switch device	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.
Hand strength	Door Key device	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.

Primary Outcome Measures

Name	Time	Method
Strength device	15 minutes	The strength of the cylindrical grip movement was quantified through the door handle device, the spherical grip strength through the tap device, the hook grip strength through the vertical door pull handle, the pulp-pulp pinch strength through the linear switch device and the pulp-side pinch strength through the key device. The test was quantified 3 times with a 1 minute interval between each test and the force throughout the range of motion.; Unit of measure: newton (N).

Secondary Outcome Measures

Name	Time	Method
Range of motion in angle	15 minutes	The test measured the range of motion of the door handle device, the tap device, door pull handle device and the door key device, 3 times with 1 minute interval for each test, in which all range of motion was measured from its start until its end. Unit of measure: Angle (º).
Range of motion millimeter	15 minutes	The test measured the range of motion in a linear switch device 3 times with a 1 minute interval for each test, in which all of the range of motion was measured from its start until its end. Unit measurement: millimeter (mm).

Trial Locations

Locations (1)

Silvia Regina Matos da Silva Boschi; 🇧🇷 Mogi das Cruzes, São Paulo, Brazil