“…It is essential that nurse researchers examine biological data in groups such as older women with mobility limitations because it can provide further knowledge on disability and health outcomes in late life (Harrison, 2009; Kang, Rice, Park, Turner-Henson, & Downs, 2010; Whitfield, Angel, & Wong, 2011) that can be essential for the development of appropriate health care treatments and interventions (Nosek, 2000). For example, understanding cortisol levels and stress may reveal information about the daily life of older adults with mobility limitations (Kalpakjian, Farrell, Albright, Chiodo, & Young, 2009) and examining the lengths of telomeres may provide information on disability risk (Risques et al, 2010).…”