“…Previous research has shown that HRV declines with aging, and other studies have demonstrated a slowing of physiologic responses across the age span (Boutcher, Cotton, Nurhayati, Craig, & McLaren, 1997;De Meersman & Stein, 2007;Fukusaki, Kawakubo, & Yamamoto, 2000;Leicht, Allen, & Hoey, 2003;Stein, Ehsani, Domitrovich, Kleiger, & Rottman, 1999;Ueno, Hamada, & Moritani, 2002;Wood, Hondzinski, & Lee, 2003). We saw little of this reduced responsiveness in our older subject group.…”