Development of an integrated digital hand grip dynamometer and norm of hand grip strength

Abstract

Abstract. This study designs and fabricates a novel integrated digital hand grip dynamometer and analyzes collected grip strength data. The dynamometer directly stores collected data in a computer, unlike those on the market that cannot directly store information. A strain gauge load cell is used as a force sensor. The dynamometer is designed to maximize ergonomics. Excitation voltage of the load cell is 5 V, and a 9 V battery supplies power to its circuit. The signal receiver is National Instruments (NI) data acquisition (DAQ) card that transmits signals to the computer. The operation system is designed using LabView. This study assesses the correlation between variables of collected data. The correlation coefficients for height, weight and palm length were 0.793, 0.609 and 0.715, respectively, indicating that variables were moderately to strongly correlate with grip strength.

Avaliação Do Torque De Preensão Palmar E Medidas Antropométricas: Correlação Entre Dinamômetro Analógico Manual E Sensor De Foçar Digital

“…Achados semelhantes foram encontrados por Chang e cols (2015) [14], ao desenvolver um sensor de força digital e compará-lo ao dinamômetro analógico, evidenciaram correlação entre força de preensão com altura (0,793); e peso corporal (0,609); e comprimento da palma da mão (0,715).…”

Data Acquisition System and Pattern Image Generations for Hand Grip Device

“…There are many works have been done to digitalize the conventional dynamometers. Modern dynamometer consists of strain gauge load cell, data acquisition system, and signal conditioning circuitries to process the electrical signals generated based on the grasp [7]. Domo-Grip ball is a spherical electronic device designed to determine the grip strength [8].…”