Many people look terribly uncoordinated when they run. Telling them to change their form will just make them more uncoordinated. If a coach criticizes a team member for poor running form and doesn't correct the underlying causes, the person is likely to become self-conscious about how he or she looks, and run even more slowly. Coordination usually improves just with repeated practice in the chosen sport.
Running form can improve markedly if you can correct muscle imbalances and structural abnormalities with appropriate exercises and perhaps mechanical devices. A coach can videotape the athletes while they run, then review the tape in slow motion to analyze the mechanical defects. For example, leaning forward during running is often caused by weak back muscles, which can be treated with exercises to strengthen the back. Pointing the toes out is often caused by weak lower leg muscles and can be corrected by doing exercises to strengthen the shin muscles. Leaning back on the heels after foot plant can be caused by excessive rolling-in motion of the feet or weak calf muscles.
Treatment often includes special inserts in the shoes and calf strengthening exercises, such as toe raises while holding a heavy weight in the hands. Holding the shoulders up towards the ears during running is usually caused by weak shoulder muscles, which can be corrected by shrugging the shoulders while holding weights. A low knee-lift is often caused by weak quadriceps muscles in the front of the upper leg. The quadriceps can be strengthened by pedaling a bicycle, skating, or running up hills.