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

Hand Injuries and Disorders Clinical Trial

Official title:

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

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04174729
• Other study ID #: 19020219.2.0000.5497
• Status: Completed
• Phase: N/A
• Start date: August 5, 2019
• Est. completion date: October 29, 2019

Study information

• Verified date: November 2019
• Source: University of Mogi das Cruzes
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

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

Recruitment information / eligibility

• Status: Completed
• Enrollment: 30
• Est. completion date: October 29, 2019
• Est. primary completion date: September 9, 2019
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 20 Years to 39 Years

Eligibility

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.

Related Conditions & MeSH terms

• Hand Injuries
• Hand Injuries and Disorders

Intervention

Device:
• handgrip strength
First, the hand measurements of each volunteer were evaluated, followed by the measurement of handgrip strength using the Jamar® dynamometer. And later the tests were performed using the system that contains the 5 devices to quantify the hand strength.
• Door handle device
To evaluate the cylindrical grip movement, a door handle was used, which evaluated the full force in the range of motion.
• Tap device
To evaluate the spherical grip movement, a tap was used, which evaluated the full force in the range of motion.
• Door pull handle
To assess the hook grip movement, a door pull handle was used, which assessed the full force in the range of motion
• Linear Switch device
To evaluate the pulp-pulp pinch movement, a switch was used, which evaluated the full force in the movement of the movement.
• Door Key device
To assess the pulp-side pinch movement, a door key was used, which evaluated the full force in the range of motion.

Locations

Country	Name	City	State
Brazil	Silvia Regina Matos da Silva Boschi	Mogi das Cruzes	São Paulo

Sponsors (1)

Lead Sponsor	Collaborator
University of Mogi das Cruzes

Country where clinical trial is conducted

Brazil, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Anthropometric variables	The anthropometric measurement of the right hand was performed using an analog caliper, as it is an important parameter for functional evaluation, as it was of the following anatomical parts: total length of the hand (wrist crease to middle finger tip), longitudinal length of the palm from the hand (wrist crease to the proximal crease of the middle finger) and transverse length of the palm (lateral to medial line of the metacarpophalangeal muscles). Unit of measure: millimeter (mm)	5 minutes
Other	Dynamometer Jamar Strength	To make the sample more homogeneous, the Jamar ® dynamometer was used to measure grip strength maximum contraction for 3 seconds. A single measurement was performed. Unit of measure: kilogram - force (kgf).	1 minute
Primary	Strength device	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).	15 minutes
Secondary	Range of motion in angle	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).	15 minutes
Secondary	Range of motion millimeter	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).	15 minutes