“…The architecture of the shoulder, because of its limited stability and small supporting musculature is not well designed for the tasks required of manual wheelchair users (Van Straaten, Cloud, Morrow, Ludewig, & Zhao, 2014). For that reason, wheelchair users may report SP as a common problem in this population, showing a Introduction range from 14% up to 85% of SP in different studies (Curtis & Black, 1999;Ballinger, Rintala & Hart, 2000;Fullerton, Borckardt, & Alfano, 2003;Pérez-Tejero, Martínez-Sinovas, & Rossignoli, 2006;Samuelsson, Tropp, & Gerdle, 2004;Wessels, Brown, Ebersole, & Sosnoff, 2013). Previous studies have reported shoulder injuries as a common problem in WB (Nyland, Robinson, Caborn, Knapp, & Brosky, 1997;Curtis & Black, 1999;Pérez-Tejero et al, 2006), and these are mainly from the increased load at this joint and repetitive stress of ADLs and sport activities (Fullerton et al, 2003).…”