1. Tinetti ME, Speechley M, Ginter SF. Risk factors for falls among elderly persons living in the community. N Engl J Med 1988;319:1701-1707.
3. Brody LT. In: Hall CM, Brody LT, Balance impairment. editors. Therapeutic exercise: moving toward function. 1999.Philadelphia: Lippincott Williams & Wilkins; p.112-127.
4. Nashner LM. In: Duncan PW. Sensory neuromuscular and biomechanical contributions to human balance. In: Balance: proceedings of the APTA Forum 1990;1989 Jun 13-15; Nashville, TN. Alexandria, VA, American Physical Therapy Association.
6. Daubney ME, Culham EG. Lower-extremity muscle force and balance performance in adults aged 65 years and older. Phys Ther 1999;79:1177-1185.
7. Colledge NR, Cantley P, Peaston I, Brash H, Lewis S, Wilson JA. Ageing and balance: the measurement of spontaneous sway by posturography. Gerontology 1994;40:273-278.
8. Grimston SK, Nigg BM, Hanley DA, Engsberg JR. Differences in ankle joint complex range of motion as a function of age. Foot Ankle 1993;14:215-222.
9. Bennell KL, Goldie PA. The differential effects of external ankle support on postural control. J Orthop Sports Phys Ther 1994;20:287-295.
11. Woo YK, Hwang JH, An J, Park H, Kim YH, Lee PK, et al. Effect of characteristics of joint motion of lower extremity according to aging on balance in elderly. J Korean Acad Rehabil Med 2005;29:109-118.
12. Laughton CA, Slavin M, Katdare K, Nolan L, Bean JF, Kerrigan DC, et al. Aging, muscle activity, and balance control: physiologic changes associated with balance impairment. Gait Posture 2003;18:101-108.
13. Lim KB, Na YM, Lee HJ, Joo SJ. Comparison of postural control measures between older and younger adults using balance master system. J Korean Acad Rehabil Med 2003;27:418-423.
14. Whipple RH, Wolfson LI, Amerman PM. The relationship of knee and ankle weakness to falls in nursing home residents: an isokinetic study. J Am Geriatr Soc 1987;35:13-20.
15. Macrae PG, Lacourse M, Moldavon R. Physical performance measures that predict faller status in community-dwelling older adults. J Orthop Sports Phys Ther 1992;16:123-128.
16. Spink MJ, Fotoohabadi MR, Wee E, Hill KD, Lord SR, Menz HB. Foot and ankle strength, range of motion, posture, and deformity are associated with balance and functional ability in older adults. Arch Phys Med Rehabil 2011;92:68-75.
17. Amundsen LR. In: Kauffman TL, Effects of age on joints and ligaments. editor. Geriatric rehabilitation manual. 1999.New York: Churchill Livingstone; p.14-16.
18. Horak FB, Shupert CL, Mirka A. Components of postural dyscontrol in the elderly: a review. Neurobiol Aging 1989;10:727-738.