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