Figure 3: Changes induced by testosterone administration and/or resistance training in the four subject groups in cardiac variables during exercise (bars represent mean and SE of change). P: placebo, no training; PR: placebo, resistance training; T: testosterone, no training; TR: testosterone, resistance training. Significant difference with respect to placebo-no training: *: p<0.05, **: p<0.01; ***: p<0.005.
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