Effect of T_a on core and T_skin. Linear regression of the indicated temperatures of lean men (black, n = 12) and men with obesity (red, n = 9) as a function of T_a. (a) T_core and T_skin (T_sk) of the (b) chest, (c) upper arm, (d) upper leg, (e) hand, (f) lower leg, and (g) weighted mean. (h) Gradient from the core to skin. P values are results of mixed-effects model post hoc tests for differences between lean men and men with obesity.