“…The physical fitness of these AYAs were fair to poor as indicated by the range of VO 2 peak values. The mean VO 2 peak of 19.2 mL/kg/min is similar to findings in other studies of AYAs with SCD, where mean VO 2 peaks have ranged from 23 to 28 (Liem et al, 2009;Liem et al, 2015;Watson et al, 2015), and notably lower than healthy AYAs, where VO 2 peaks have been ranged from 28 to 52 (Eisenmann, Laurson, & Welk, 2011;Liem et al, 2015;Robbins, Pender, Ronis, Kazanis, & Pis, 2004;Schneider, Dunn, & Cooper, 2009;Watson et al, 2015;Zamunér et al, 2011). Studies of sedentary individuals within this age category have reported VO 2 peaks ranging from 24 to 33 ml/kg/min (Welch et al, 2007;Zamunér et al, 2011).…”