Differences between Okinawan makiwara training and JKA makiwara training
The JKA version seems to be using more external mechanics in terms of a push or mass type strike. The Okinawan method seems to be using an external application of fajin, using the momentum and power of opening the qua (the hip seam). This illustrates one of the divergence points of karate, when it was imported from Okinawa to Japan. The Japanese chose to specialize in striking for karate, due to various reasons.