“…It has been estimated that nearly half of MMH tasks common at workplaces demand pushing and pulling exertions (Lee & Granata, 2006). In addition to 2 manufacturing workers, other occupations that demand pushing and pulling types of exertions on a daily basis include health care (Waters, Nelson, & Proctor, 2007;Seto, et al, 2006;Das & Wimpee, 2002), fire fighting (Gledhill & Jamnik, 1992), flight and rail catering (Glitsch, et al, 2007;Schaub, et al, 2007;Jäger, et al, 2007), postal distribution (Hoozemans, et al, 2007;Hoozemans, et al, 2004;van der Beek, et al, 2000), refuse collection (Schibye, Søgaard, et al, 2001;Frings-Dresen, Kemper, Stassen, Markslag, et al, 1995;Frings-Dresen, Kemper, Stassen, Crolla, et al, 1995), construction ) and garden raking (Kumar, 1995), retail, storage, and warehousing (Kumar, Narayan, & Bacchus, 1995).…”