Christopher McDougall is an ardent proponent of barefoot running, but as the number of tendo-achilles and calf injuries related to running barefoot rises, it is clear to those of us who treat ailing runners that this is not the ideal form for everyone. Just as there are alternate styles of swimming or hitting a baseball, biomechanics shows us that runners should develop their own style to maximize performance.
DR. JAY KERNER,
Rockville Centre, N.Y.