Abstract

Leptin has been established as an energy-controlling hormone because of its role in activating the JAK-STAT3 pathway. Exercising in the heat (1-hour of cycling @60% VO2max in 33°C) has also induced reductions in leptin. However, in order to better understand the influence of environmental temperature, independent of exercise, a fasted resting investigation is needed. This investigation explored the impact of environmental temperature (33 vs. 20°C) on adipose-derived appetite-regulating hormones (leptin and adiponectin) and energy expenditure. Ten college-aged males (27±5y, 86±13kg, and 183±4cm) completed two randomized, resting trials in the Heat (HT, 33°C) and in Room Temperature (RT, 20°C).

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