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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Evol Hum Behav. 2013 Jul 23;34(5):10.1016/j.evolhumbehav.2013.06.002. doi: 10.1016/j.evolhumbehav.2013.06.002

Figure 2. Salivary testosterone before and after one hour of tree-chopping.

Figure 2

Figure 2A represents the individual changes (n=49) in log testosterone before and after intense physical activity. Figure 2B is the predicted change in testosterone controlling for BMI, and time of day.