The lunge step: This is the final step into the plant spot. Your kicking leg is in the back swing. The farther you take your leg back, the more force and leg speed you can potentially generate. Remember to take the hip back as well. The entire body must be engaged, not just the leg. The plant leg is slightly bent; this leg is the stabilizing leg so the ankle needs to be strong. Like a scope on a gun the plant foot should be even or slightly in front of the ball.
Make sure your foot is not pointed to the target at an angle. The plant foot should be a foot away from the ball. It shouldn't be any closer or you will crowd yourself and prevent your hips and leg from fully coming though the strike zone. Notice in the picture that my the head is looking down at the ball. Imagine a line going straight down the center of your chest to the ball.
Look down and watch the foot contact the ball. Notice that the chest is up and the arms are in a position to balance the movement. Keep the ankle locked during the down swing; you must contact the ball with a locked ankle. The knee of the kicking leg should be slightly bent right before contact. The instant after contact the leg locks out and the entire leg is one moment arm moving at maximum speed.
In applying the principles of kinesiology to my training and examining best outcomes, I have found that the leg moves faster when the leg locks out right as the ball contacts the foot. Avoid locking out before contact and hitting the ball on the up swing, causing the leg to reach maximum speed too soon. The leg will have slowed down during the follow through and lessened your power at contact. Mechanically, you have the upper leg and the lower leg.
The lower leg is called the shank. The shank is like a whip; it comes though after the upper leg has passed the ball. Mind you, I don’t mean that the upper leg is far past the ball causing the lower leg to lag behind. Rather, the knee is a lever; force is generated though it when used correctly. The knee is almost over the ball when the lower leg contacts it. Imagine the upper leg and lower leg in a straight line coming up through the ball. If everything is already locked out and in a straight line the leg has reached its max speed.
You will muster more leg speed if you lock the knee out right as the ball is leaving your foot. It is too hard to notice at full speed, so I recommend that you video tape yourself in practice and look at it in slow motion.













