“…Comprehensive scales such as the Fried index, Rockwood index, and Short Physical Performance Battery (SPPB) are also commonly used (Afilalo et al ., 2009, 2014; Dodson & Chaudhry, 2012; Flint et al ., 2012; Morley et al ., 2013), described in detail elsewhere (Fried et al . 2001; Morley et al ., 2013; Chamberlain et al ., 2016). Together, these serve to limit mobility, independence, and the ability to perform activities of daily living in older adults (Chamberlain et al ., 2016).…”