Volume 23, Issue 30 (1-2026)                   RSMT 2026, 23(30): 61-79 | Back to browse issues page

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Department of Motor Behavior, Faculty of Physical Education and Sport Sciences, Kharazmi University of Tehran, Tehran, Iran. , rasoolyaali@yahoo.com
Abstract:   (4920 Views)
Aim: Different postural stability and functional movements may play an important role in secondary injuries in people with flexible flat feet compared to people with normal feet. However, the difference between static and dynamic stability and functional movements of people with and without flexible flatfeet has not been investigated. Therefore, the current study was conducted with the aim of comparing static and dynamic stability and functional movements of subjects with and without flexible flatfeet and examined the relationship between functional movements and static and dynamic stability.
Methods: In the cross-sectional study, 96 subjects after evaluating the medial longitudinal arch of the foot with navicular drop test were divided into two groups, flexible flat feet group (n=25) and normal feet group (n=71). Functional performance using functional movements screening test, static stability using the Sharpened Romberg balance test, dynamic stability using the Y balance test were measured. In order to compare the parameters measured in two groups, non-parametric U-Mann-Whitney test was used.
Results: The scores of functional movements and static stability in the normal feet group were significantly higher than the flexible flatfeet group (p≤0.05). The total score of the Y test was not significantly different between the two groups (p≥0.05). In the group of normal feet, a significant correlation was observed between functional movement scores and dynamic stability (p≤0.05).
Conclusion: These results show that subjects with flexible flatfeet have different movement performance and static stability compared to subjects with normal feet, but they have similar dynamic stability. It may indicate that there is no connection between static and dynamic stability and these two functions are separate from each other.

 
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Type of Study: Research | Subject: آسیب شناسی و حرکات اصلاحی
Received: 2024/11/18 | Accepted: 2025/06/9 | Published: 2026/01/30

References
1. Shibuya N, Kitterman RT, LaFontaine J, Jupiter DC. Demographic, physical, and radiographic factors associated with functional flatfoot deformity. The Journal of Foot and Ankle Surgery. 2014;53(2):168-72. [DOI:10.1053/j.jfas.2013.11.002]
2. Tome J, Nawoczenski DA, Flemister A, Houck J. Comparison of foot kinematics between subjects with posterior tibialis tendon dysfunction and healthy controls. Journal of Orthopaedic & Sports Physical Therapy. 2006;36(9):635-44. https://www.jospt.org/doi/10.2519/jospt.2006.2293 [DOI:10.2519/jospt.2006.2293]
3. Lakstein D, Fridman T, Ziv YB, Kosashvili Y. Prevalence of anterior knee pain and pes planus in Israel defense force recruits. Military medicine. 2010;175(11):855-7. [DOI:10.7205/MILMED-D-09-00145]
4. Kosashvili Y, Fridman T, Backstein D, Safir O, Ziv YB. The correlation between pes planus and anterior knee or intermittent low back pain. Foot & ankle international. 2008;29(9):910-3 . [DOI:10.3113/FAI.2008.0910]
5. Yoon K-S, Park S-D. The effects of ankle mobilization and active stretching on the difference of weight-bearing distribution, low back pain and flexibility in pronated-foots subjects. Journal of exercise rehabilitation. 201. 292:(2)9;3. [DOI:10.12965/jer.130013]
6. Hasan SS, Robin DW, Szurkus DC, Ashmead DH, Peterson SW, Shiavi RG. Simultaneous measurement of body center of pressure and center of gravity during upright stance. Part I: Methods. Gait & posture. 1996;4(1):1-10. [DOI:10.1016/0966-6362(95)01030-0]
7. Hertel J, Gay MR, Denegar CR. Differences in postural control during single-leg stance among healthy individuals with different foot types. Journal of athletic training. 2002;37(2):129.
8. Cote KP, Brunet ME, Gansneder BM, Shultz SJ. Effects of pronated and supinated foot postures on static and dynamic postural stability. Journal of athletic training. 2005;40(1):41.
9. Tsai L-C, Yu B, Mercer VS, Gross MT. Comparison of different structural foot types for measures of standing postural control. Journal of Orthopaedic & Sports Physical Therapy. 2006;36(12):942-53. https://www.jospt.org/doi/10.2519/jospt.2006.2336 [DOI:10.2519/jospt.2006.2336]
10. Lynn SK, Padilla RA, Tsang KK. Differences in static-and dynamic-balance task performance after 4 weeks of intrinsic-foot-muscle training: the short-foot exercise versus the towel-curl exercise. Journal of sport rehabilitation. 2012;21(4):327-33. [DOI:10.1123/jsr.21.4.327]
11. Kothari A, Dixon P, Stebbins J, Zavatsky A, Theologis T. Are flexible flat feet associated with proximal joint problems in children? Gait & posture. 2016;45:204-10. [DOI:10.1016/j.gaitpost.2016.02.008]
12. Maffetone P. The assessment and treatment of muscular imbalance - The Janda Approach. Journal of Bodywork and Movement Therapies. 2010;14(3):287-8. [DOI:10.1016/j.jbmt.2009.11.003]
13. Izraelski J. Assessment and treatment of muscle imbalance: The Janda approach. The Journal of the Canadian Chiropractic Association. 2012;56(2):158.
14. Khamis S, Yizhar Z. Effect of feet hyperpronation on pelvic alignment in a standing position. Gait & posture. 2007;25(1):127-34. [DOI:10.1016/j.gaitpost.2006.02.005]
15. Obrien DL, Tyndyk M. Effect of arch type and Body Mass Index on plantar pressure distribution during stance phase of gait. Acta of bioengineering and biomechanics. 2014;16(2). http://dx.doi.org/10.5277/abb140215
16. Fallahasady E, Rahmanloo N, Seidi F, Rajabi R, Bayattork M. The relationship between core muscle endurance and functional movement screen scores in females with lumbar hyperlordosis: a cross-sectional study. BMC Sports Science, Medicine and Rehabilitation. 2022;14(1):182. [DOI:10.1186/s13102-022-00567-2]
17. Gras LZ, Pohl PS, Epidy J, Godin B, Hoessle N. Use of the Sharpened Romberg as a screening for fall risk. Topics in Geriatric Rehabilitation. 2017;33(2):113-7. [DOI:10.1097/TGR.0000000000000145]
18. Schwiertz G, Brueckner D, Schedler S, Kiss R, Muehlbauer T. Performance and reliability of the Lower Quarter Y Balance Test in healthy adolescents from grade 6 to 11. Gait & posture. 2019;67:142-6. [DOI:10.1016/j.gaitpost.2018.10.011]
19. Linek P, Sikora D, Wolny T, Saulicz E. Reliability and number of trials of Y Balance Test in adolescent athletes. Musculoskeletal science and practice. 2017;31:72-5. [DOI:10.1016/j.msksp.2017.03.011]
20. Cook G, Burton L, Hoogenboom B. Pre-participation screening: the use of fundamental movements as an assessment of function-part 1. North American journal of sports physical therapy: NAJSPT. 2006;1(2):62.
21. Fransz DP, Huurnink A, Kingma I, van Dieën JH. How does postural stability following a single leg drop jump landing task relate to postural stability during a single leg stance balance task? Journal of Biomechanics. 2014;47(12):3248-53. [DOI:10.1016/j.jbiomech.2014.06.019]
22. Shrader JA, Popovich Jr JM, Gracey GC, Danoff JV. Navicular drop measurement in people with rheumatoid arthritis: interrater and intrarater reliability. Physical therapy. 2005;85(7):656-64. [DOI:10.1093/ptj/85.7.656]
23. Moon D, Jung J, editors. Effect of Incorporating Short-Foot Exercises in the Balance Rehabilitation of Flat Foot: A Randomized Controlled Trial. Healthcare; 2021: Multidisciplinary Digital Publishing Institute. [DOI:10.3390/healthcare9101358]
24. Yim-Chiplis PK, Talbot LA. Defining and measuring balance in adults. Biological research for nursing. 2000;1(4):321-31. [DOI:10.1177/109980040000100408]
25. Plisky PJ, Rauh MJ, Kaminski TW, Underwood FB. Star Excursion Balance Test as a predictor of lower extremity injury in high school basketball players. Journal of orthopaedic & sports physical therapy. 2006;36(12):911-9. https://www.jospt.org/doi/10.2519/jospt.2006.2244 [DOI:10.2519/jospt.2006.2244]
26. Mansfield PJ, Neumann DA. Essentials of kinesiology for the physical therapist assistant e-book: Elsevier Health Sciences; 2018.
27. Gray EG, Basmajian JV. Electromyography and cinematography of leg and foot ("normal" and flat) during walking. The anatomical record. 1968;161(1):1-15. [DOI:10.1002/ar.1091610101]
28. Shumway-Cook A, Woollacott MH. Motor control: translating research into clinical practice: Lippincott Williams & Wilkins; 2007.
29. Mulligan EP, Cook PG. Effect of plantar intrinsic muscle training on medial longitudinal arch morphology and dynamic function. Manual therapy. 2013;18(5):425-30. [DOI:10.1016/j.math.2013.02.007]
30. Price J. The BioMechanics Method for Corrective Exercise: Human Kinetics; 2018. [DOI:10.5040/9781718209763]
31. Shubert TE, Schrodt LA, Mercer VS, Busby-Whitehead J, Giuliani CA. Are scores on balance screening tests associated with mobility in older adults? Journal of geriatric physical therapy. 2006;29(1):33-9. [DOI:10.1519/00139143-200604000-00007]
32. Sung PS, Zipple JT, Andraka JM, Danial P. The kinetic and kinematic stability measures in healthy adult subjects with and without flat foot. The Foot. 2017;30:21-6. [DOI:10.1016/j.foot.2017.01.010]
33. Hedayati R, Fatemi E, Hajihasani A, Ehsani F, Ramezanpour S. The attention needed for balance controlling in young patients with flatfoot. Koomesh. 2016:25-34.
34. Nakhostin-Roohi B, Hedayati S, Aghayari A. The effect of flexible flat-footedness on selected physical fitness factors in female students aged 14 to 17 years. 2013. [DOI:10.4100/jhse.2013.83.03]
35. Shaffer SW, Teyhen DS, Lorenson CL, Warren RL, Koreerat CM, Straseske CA, et al. Y-balance test: a reliability study involving multiple raters. Military medicine. 2013;178(11):1264-70. [DOI:10.7205/MILMED-D-13-00222]
36. Cook G, Burton L, Hoogenboom B. Pre-participation screening: The use of fundamental movements as an assessment of function-Part 2. North American journal of sports physical therapy: NAJSPT. 2006;1(3):132.
37. Everard EM, Harrison AJ, Lyons M. Examining the relationship between the functional movement screen and the landing error scoring system in an active, male collegiate population. The Journal of Strength & Conditioning Research.1265 -1272:(5)31;2017. [DOI:10.1519/JSC.0000000000001582]
38. Smith CA, Chimera NJ, Wright NJ, Warren M. Interrater and intrarater reliability of the functional movement screen. The Journal of Strength & Conditioning Research. 2013;27(4):982-7. [DOI:10.1519/JSC.0b013e3182606df2]
39. Kim J-a, Lim O-b, Yi C-h. Difference in static and dynamic stability between flexible flatfeet and neutral feet. Gait & posture. 2015;41(2):546-50. [DOI:10.1519/JSC.0b013e3182606df2]
40. Cobb SC, Tis LL, Johnson BF, Higbie EJ. The effect of forefoot varus on postural stability. Journal of Orthopaedic & Sports Physical Therapy. 200. 79-85: (2)34;4. https://www.jospt.org/doi/10.2519/jospt.2004.34.2.79 [DOI:10.2519/jospt.2004.34.2.79]
41. Hunt AE, Fahey AJ, Smith RM. Static measures of calcaneal deviation and arch angle as predictors of rearfoot motion during walking. Australian Journal of Physiotherapy. 2000;46(1):9-16. [DOI:10.1016/S0004-9514(14)60309-3]
42. Fallahasady E, Rahmanloo N, Seidi F, Rajabi R, Bayattork M. The relationship between core muscle endurance and functional movement screen scores in females with lumbar hyperlordosis: a cross-sectional study. BMC Sports Science, Medicine and Rehabilitation. 2022;14(1):1-8. [DOI:10.1186/s13102-022-00567-2]
43. Harshbarger ND, Anderson BE, Lam KC. Is there a relationship between the functional movement screen, star excursion balance test, and balance error scoring system? Clinical Journal of Sport Medicine. 2018;28(4):389-94. [DOI:10.1097/JSM.0000000000000465]
44. Chang W-D, Chou L-W, Chang N-J, Chen S. Comparison of functional movement screen, star excursion balance test, and physical fitness in junior athletes with different sports injury risk. BioMed research international. 2020;2020. [DOI:10.1155/2020/8690540]

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