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Completed

NCT Number: NCT04174729

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

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.

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Key information

Conditions

Hand Injuries and Disorders Disease Hand Injuries Pathologic Processes Pathological Conditions, Signs and Symptoms Wounds and Injuries

Age range

20 year–39 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Silvia Regina Matos da Silva Boschi

Mogi das Cruzes, São Paulo, 08780-911, Brazil

About this study

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

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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.

Treatment and study plan

Handgrip strength

Device

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.

Other names: Jamar dynamometer

Door handle device

Device

To evaluate the cylindrical grip movement, a door handle was used, which evaluated the full force in the range of motion.

Tap device

Device

To evaluate the spherical grip movement, a tap was used, which evaluated the full force in the range of motion.

Door pull handle

Device

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

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

Device

To assess the pulp-side pinch movement, a door key was used, which evaluated the full force in the range of motion.

Primary outcomes

  1. Strength device

    Time frame: 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 outcomes

  1. Range of motion in angle

    Time frame: 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).

  2. Range of motion millimeter

    Time frame: 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).

Other outcomes

  1. Anthropometric variables

    Time frame: 5 minutes

    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)

  2. Dynamometer Jamar Strength

    Time frame: 1 minute

    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).

Sponsors and collaborators

Lead sponsor

University of Mogi das Cruzes

Other

Registry information

Important dates

Study start
2019
Primary completion
2019
Study completion
2019
First posted
Nov 22, 2019
Registry last updated
Dec 3, 2019

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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