The effect of stretching on the range of motion of the ankle joint in badminton players*

The range of motion in the ankle joints were studied in two groups of badminton players during their training season. In one group, the exercise program consisted of tip-toe raising, whereas in the other group stretching exercise was added. The range of motion in the ankle joint in badminton players did not deviate from that of a control group. Both programs, stretching as well as regular exercise, increased the range of motion by approximatively 5 degrees during a 12-week period. No lengthening of the gastrocnemius muscle could be measured under maximal dorsiflexion from 30-35'. Too short or too tight a calf muscle does not explain the high incidence of Achilles tendon rupture and Achilles tendon pain in badminton players.J Orthop Sports Phys Ther 1983;5(2):74-77.