Yes. Never use momentum. It is not necessary to move super slowly, but, if you want to avoid injuries and improve your results, never use momentum. Maintain complete control at all times.
Kegel exercises are beneficial in that they help control the muscles which control ones bladder. Women who are pregnant often do kegel exercises to help strengthen their pelvic muscles.
The plantar fascia muscles are those located in the foot that control heel movement. One of the easiest exercises is to stand on a low curb with just the toes and raise and lower ones heels above and below the curb.
The key to velocity is a combination of natural ability, strength and flexibility. TRhe first you can't control. Performing limbering exercises on your arms will help get you more "whip" on your pitch, while working strength exercises on your trunk and pushoff leg will help add a few extra mph.
Oligarchy.
Look into exercises that strengthen the shoulder, as that is where much of the force is generated. In addition to the deltoid, you would want to target rotator cuff muscles since these control the actual joint movement. It is also important to not neglect the lower body, especially to improve stamina.
temperance
The Feldenkrais method of excercise is a method made to allow for dynamic movement and helps the disabled to regain motor control. More information can be found here: http://www.feldenkrais.com/method/article/anti_exercise_for_the_older_and_wiser/
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What controls the movement of groundwater
YOU!
Some of the proteins and lipids do control movement of materials into and out of the cell.