For classic ballet dancers dancing on the narrow base of support, postural control ability is an important factor in evaluating their performance. We examined the hypotheses whether 1) postural control ability is related to the forefoot contact area on demi-pointe with one leg, and 2) the toe abductor muscle strength contributes to the larger forefoot contact area and postural control ability in classic ballet dancers. Eighteen junior female classic ballet dancers participated. Postural control time and the forefoot contact area were measured on demi-pointe with one leg. Furthermore, two types of measurements were performed to evaluate toe muscle strengths: the toe flexor strength and the toe abductor strength. In addition, the toe abductor muscle strength was calculated separately for the great toe abductor muscle strength and the little toe abductor muscle strength. There was a significant positive correlation between the forefoot contact area and postural control time (p<0.01), as well as between the little toe abductor strength and the forefoot contact area (p<0.01). These results revealed that the junior female classic ballet dancers, which can spread the forefoot contact area, can control the posture on demi-pointe with one leg for a long time. In addition, the little toe abductor muscle strength would affect the larger forefoot contact area.
