Effects of EVA Glove on Hand Performance
نویسندگان
چکیده
Terms of use: This article is made available under terms and conditions applicable to Open Access Policy Article ("Public-All rights reserved") , as described at http://porto.polito.it/terms_and_conditions. html Porto, the institutional repository of the Politecnico di Torino, is provided by the University Library and the IT-Services. The aim is to enable open access to all the world. Please share with us how this access benefits you. Your story matters. The human hand is a very particular limb: it has a wide range of degrees of freedom, permitting to achieve a great variety of movements, and is also one of the most sensorized parts of the human body. These characteristics make it the most important tool for astronauts to perform extravehicular activity (EVA). However, mandatory EVA equipment strongly reduces hand performances, in particular as regards dexterity, tactile perception, mobility and fatigue. Several studies have been conducted to determine the influence of the EVA glove on manual capabilities, both in the past and more recently. This study presents experimental data regarding the performance decay which occurs in forces, fatigue and capability to execute tasks when wearing a non pressurized EVA glove, in comparison with bare-handed potential. Moreover, mechanical resistance of the glove has been measured and imposed pressure maps are presented. Results yield a deeper knowledge on how EVA gloves hinder human hand performance and how this is related to their stiffness. Nomenclature EVA = Extravehicular Activity EMU = Extravehicular Mobility Unit TMG = Thermal Micrometeoroid Garment EMG = Electromyography
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