Fig. 2.

Performance on tests evaluating aspects of attention in younger (n = 14) and older (n = 15) subjects during heat stress and time control trials at baseline and during heat stress (i.e., heat) and following a time control period (i.e., control). Left: rapid visual processing test (RVP). Right: choice reaction time test (CRT). Data are presented as means ± SD. *Significantly different from younger within trial(s) at same time point(s) (P ≤ 0.003). †Significantly different from baseline within trial and age group (P ≤ 0.001).