Identify the true statements about the impact of endurance exercise training. (Check all that apply.) A. Endurance exercise training increases the oxidative capacity in the trained muscle fibers.
B. Endurance exercise training significantly decreases motor unit firing rates in both arm and leg muscles.
C. Endurance exercise training increases the activation of antagonist muscles.
D. Endurance exercise training promotes the formation of new capillaries around the trained muscle fibers.