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. Author manuscript; available in PMC: 2016 Jul 18.
Published in final edited form as: Exp Physiol. 2015 Feb 12;100(4):422–434. doi: 10.1113/expphysiol.2014.083014

Figure 2. Systolic annular velocities (S′) and peak global longitudinal systolic strain in young and older adults in normothermic and hyperthermic conditions.

Figure 2

Individual and group-averaged echocardiographic data. Hyperthermia increased global longitudinal systolic strain (GLSS) in the older adults while remaining unchanged in the young, indicating an increased reliance on systolic mechanisms in the older adults. *Significant main effect of thermal condition, P < 0.05. †Significant main effect of age, P < 0.05. ‡Significant post hoc pairwise comparison between age groups within thermal condition, P < 0.05.