Reliability of electromyographic amplitude values of the upper limb muscles during closed kinetic chain exercises with stable and unstable surfaces - Araújo, Rodrigo Cappato de; Tucci, Helga Tatiana; Andrade, Rodrigo de; Martins, Jaqueline; Grossi, Débora Bevilaqua; Oliveira, Anamaria Siriani de (Journal of Electromyography & Kinesiology, 2009)