[1] Chou, S. W., Cheng, H. Y., Chen, J. H., Ju, Y. Y., Lin, Y. C., & Wong, M. K. (2009). The role of the great toe in balance performance. Journal of Orthopaedic Research, 27, 549-554.
http://dx.doi.org/10.1002/jor.20661
[2] Fujiwara, K., Ikegami, H., & Okada, M. (1984). The position of the center of foot pressure in an upright stance and its determing factors. Posture, 4, 9-16.
[3] Harada, S. (2001). A study on physical structures of preschool children’s feet compared between 1980 and 2000. The Japanese society for Medical Study of Footwear, 15, 14-18.
[4] Kojima, S., & Takemmori, S. (1980). Development of body balance in children. Practica Oto-Rhino-Laryngologica, 73, 865-871.
http://dx.doi.org/10.5631/jibirin.73.865
[5] Matsuda, S., Demura, S., Miyaguchi, K., Kasuga, K., Kitabayashi, T., Aoki, H., & Yamamoto, Y. (2009). Sex, age, and right and left differences of floating-toe and its relationship with physique in pre-school children. The Journal of Education and Health Science, 54, 198-205.
[6] Matsuda, S., Demura, S., Kasuga, K., Aoki, H., Shin, S., & Sugiura, H. (2010). Examining the relationship between floating-toes and physical fitness in preschool children. The Journal of Education and Health Science, 56, 119-127.
[7] Matsuda, S., Demura, S., Kasuga, K., & Sugiura, H. (2011a). Changes in floating-toes one year later in preschool children based on longitudinal data. Japan Journal of Human Growth and Development Research, 51, 19-26.
[8] Matsuda, S., Demura, S., & Kasuga, K. (2011b). The effect of untouched-toes on posture stability during one-legged stance in preschool. Japan Journal of Test and Measurement in Health and Physical Education, 10, 21-26.
[9] Matsuda, S., Demura, S., Kasuga, K., & Sugiura, H. (2012). Reliability and sex differences in the foot pressure load balance test and its relationship to physical characteristics in preschool children. Advances in Physical Education, 2, 44-48.
http://dx.doi.org/10.4236/ape.2012.22008
[10] Matsuda, S., & Demura, S. (2013). Age-related, inter-individual, and right/left differences in anterior-posterior foot pressure ratio in preschool children. Journal of Physiological Anthropology, 32, 8.
http://dx.doi.org/10.1186/1880-6805-32-8
[11] The national network of physical and mental health in Japanese children (2009). Annual report of physical and mental health among the children in 2009. Tokyo: Book House HD.
[12] Uchida, T., Fujiwara, K., Sasaki, K., Yokoo, H., & Nakano, I. (2002). Measurement of foot configuration of kindergarten children. The Japanese society for Medical Study of Footwear, 16, 96-99.
[13] Usui, N., Maekawa, K., & Hirasawa, Y. (1995). Development of the upright postural sway of children. Developmental Medicine and Child Neurology, 37, 985-996.
http://dx.doi.org/10.1111/j.1469-8749.1995.tb11953.x