[Purpose] The purpose of the present study was to analyze the effects of open kinetic
chain and closed kinetic chain exercises on the static and dynamic balance of ankle joints
in young healthy women. [Subjects and Methods] Twenty women in their 20s were randomly
assigned to two groups of ten women each: an open kinetic chain exercise group and a
closed kinetic chain exercise group. Each group performed five sets of exercises three
times per week for four weeks. Exercise intensity was increased once after two weeks. The
subjects’ Romberg’s test results and their limits of stability were measured to evaluate
their static and dynamic balance. The data were analyzed using a two-way repeated measures
analysis of variance test. [Results] In the results of Romberg’s test, the main effect of
the time showed a significant difference in the trace length with eyes closed (Effect
size: d=0.97). In the result of limits of stability, the interaction effect showed a
significant difference in the backward, and the main effect of the group showed a
significant difference in the forward. [Conclusion] The open kinetic chain and closed
kinetic chain exercises both improved the balance of the subjects. The closed kinetic
chain exercise was more effective at improving the dynamic balance of young healthy women
than the open kinetic chain exercise.