Jaszczur-Nowicki J, Kruczkowski D, Bukowska J. Analysis of the distribution of foot force on the ground before and after a kinaesthetic stimulation. Journal of Kinesiology and Exercise Sciences, 2019;29(86): 19–27. https://doi.org/10.5604/01.3001.0014.1273

Zhao X, Gu Y, Yu J, Ma Y, Zhou Z. The Influence of Gender, Age, and Body Mass Index on Arch Height and Arch Stiffness. The Journal of Foot and Ankle Surgery, 2020;59(2): 298–302. https://doi.org/10.1053/j.jfas.2019.08.022

Romanova E, Kolokoltsev M, Vorozheikin A, Baatar B, Khusman O, Purevdorj D, et al. Comprehensive program for flat foot and posture disorders prevention by means of physical education in 6-year-old children. J Phys Educ Sport. 2022;22(11):2655–62.

Kim HY, Shin HS, Ko JH, Cha YH, Ahn JH, Hwang JY. Gait Analysis of Symptomatic Flatfoot in Children: An Observational Study. Clinics in Orthopedic Surgery, 2017;9(3): 363. https://doi.org/10.4055/cios.2017.9.3.363

Kurniagung PP, Indarto D, Rahardjo SS. Meta Analysis the Effect of Body Mass Index on the Flat Foot Incidence. J Epidemiol Public Heal. 2020;5(3):329–38. https://doi.org/10.26911/jepublichealth.2020.05.03.07

Žukauskas S, Barauskas V, Čekanauskas E. Comparison of multiple flatfoot indicators in 5–8-year-old children. Open Medicine, 2021;16(1): 246–256. https://doi.org/10.1515/med-2021-0227

Tomaru Y, Kamada H, Tsukagoshi Y, Nakagawa S, Tanaka K, Takeuchi R, et al. Screening for musculoskeletal problems in children using a questionnaire. Journal of Orthopaedic Science, 2019;24(1): 159–165. https://doi.org/10.1016/j.jos.2018.07.022

Rusu L, Marin MI, Geambesa MM, Rusu MR. Monitoring the Role of Physical Activity in Children with Flat Feet by Assessing Subtalar Flexibility and Plantar Arch Index. Children, 2022;9(3): 427. https://doi.org/10.3390/children9030427

Ezema CI, Abaraogu UO, Okafor GO. Flat foot and associated factors among primary school children: A cross-sectional study. Hong Kong Physiotherapy Journal, 2014;32(1): 13–20. https://doi.org/10.1016/j.hkpj.2013.05.001

Suciati T, Rulan Adnindya M, Seta Septadina I, Putri Pratiwi P. Correlation between flat feet and body mass index in primary school students. Journal of Physics: Conference Series, 2019;1246(1): 012063. https://doi.org/10.1088/1742-6596/1246/1/012063

Alsuhaymi A, Almohammadi F, Alharbi O, Alawfi A, Olfat M, Alhazmi O, et al. Flatfoot among school-age children in Almadinah Almunawwarah: Prevalence and risk factors. Journal of Musculoskeletal Surgery and Research, 2019;3(2): 204. https://doi.org/10.4103/jmsr.jmsr_89_18

He H, Pan L, Du J, Liu F, Jin Y, Ma J, et al. Muscle fitness and its association with body mass index in children and adolescents aged 7–18 years in China: a cross-sectional study. BMC Pediatrics, 2019;19(1): 101. https://doi.org/10.1186/s12887-019-1477-8

Gómez-Jurado I, Juárez-Jiménez JM, Munuera-Martínez PV. Orthotic treatment for stage I and II posterior tibial tendon dysfunction (flat foot): A systematic review. Clinical Rehabilitation, 2021;35(2): 159–168. https://doi.org/10.1177/0269215520960121

Day J, De Cesar Netto C, Nishikawa DRC, Garfinkel J, Roney A, J. O’Malley M, et al. Three-Dimensional Biometric Weightbearing CT Evaluation of the Operative Treatment of Adult-Acquired Flatfoot Deformity. Foot & Ankle International, 2020;41(8): 930–936. https://doi.org/10.1177/1071100720925423

Ueki Y, Sakuma E, Wada I. Pathology and management of flexible flat foot in children. Journal of Orthopaedic Science, 2019;24(1): 9–13. https://doi.org/10.1016/j.jos.2018.09.018

Indino C, Villafañe JH, D’Ambrosi R, Manzi L, Maccario C, Berjano P, et al. Effectiveness of subtalar arthroereisis with endorthesis for pediatric flexible flat foot: a retrospective cross-sectional study with final follow up at skeletal maturity. Foot and Ankle Surgery, 2020;26(1): 98–104. https://doi.org/10.1016/j.fas.2018.12.002

Kubo H, Lipp C, Hufeland M, Ruppert M, Westhoff B, Krauspe R, et al. Outcome after subtalar screw arthroereisis in children with flexible flatfoot depends on time of treatment: Midterm results of 95 cases. Journal of Orthopaedic Science, 2020;25(3): 497–502. https://doi.org/10.1016/j.jos.2019.06.007

Hrysomallis C. Balance Ability and Athletic Performance: Sports Medicine, 2011;41(3): 221–232. https://doi.org/10.2165/11538560-000000000-00000

Jaszczur-Nowicki J, Bukowska J, Kruczkowski D, Spieszny M, Pieniążek M, Mańko G. Analysis of students’ foot pressure distribution on the ground, as well as their body balance before and after exercise. Physical Education of Students, 2020;24(4): 194–204. https://doi.org/10.15561/20755279.2020.0402

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. Journal of Human Sport and Exercise, 2013;8(3): 788–796. https://doi.org/10.4100/jhse.2013.83.03

Octavius GS, Sugiarto T, Handy F, Hartanto RN. Flat foot at 5 to 6-year-old and history of delayed walking. Paediatrica Indonesiana, 2020;60(6): 321–327. https://doi.org/10.14238/pi60.6.2020.321-7

Kumala MS, Tinduh D, Poerwandari D. Comparison of Lower Extremities Physical Performance on Male Young Adult Athletes with Normal Foot and Flatfoot. Surabaya Physical Medicine and Rehabilitation Journal, 2019;1(1): 6. https://doi.org/10.20473/spmrj.v1i1.16156

Posa G, Betak O, Nagy E. Balance in focus: a simple observational scale to monitor the effect of exercises on static balance in case of childhood flexible flat foot. Journal of Physical Therapy Science, 2020;32(11): 735–741. https://doi.org/10.1589/jpts.32.735

Munro AG, Herrington LC. Between-Session Reliability of Four Hop Tests and the Agility T-Test. Journal of Strength and Conditioning Research, 2011;25(5): 1470–1477. https://doi.org/10.1519/JSC.0b013e3181d83335

Hachana Y, Chaabène H, Ben Rajeb G, Khlifa R, Aouadi R, Chamari K, et al. Validity and Reliability of New Agility Test among Elite and Subelite under 14-Soccer Players. Kapoula Z (ed.) PLoS ONE, 2014;9(4): e95773. https://doi.org/10.1371/journal.pone.0095773

Behera K, Mohanty RK, Das SP. Immediate Effects of Silicone Arch Support Insoles on Postural Balance in Children with Flexible Flat Feet. International Journal of Clinical and Experimental Medicine Research, 2022;6(2): 177–182. https://doi.org/10.26855/ijcemr.2022.04.010

Nikkhouamiri F, Akochakian M, Shirzad Araghi E, Hosein nejad SE. Effect of a Course of Selected Corrective Exercises on Balance and Function of Female Adolescents with Flexible Flatfoot. International Journal of Musculoskeletal Pain Prevention, 2019;4(2): 170–179. https://doi.org/10.52547/ijmpp.4.2.170

Zech A, Meining S, Hötting K, Liebl D, Mattes K, Hollander K. Effects of barefoot and footwear conditions on learning of a dynamic balance task: a randomized controlled study. European Journal of Applied Physiology, 2018;118(12): 2699–2706. https://doi.org/10.1007/s00421-018-3997-6

Bukowska JM, Jekiełek M, Kruczkowski D, Ambroży T, Jaszczur-Nowicki J. Biomechanical Aspects of the Foot Arch, Body Balance and Body Weight Composition of Boys Training Football. International Journal of Environmental Research and Public Health, 2021;18(9): 5017. https://doi.org/10.3390/ijerph18095017

Park SY, Park DJ. Comparison of Foot Structure, Function, Plantar Pressure and Balance Ability According to the Body Mass Index of Young Adults. Osong Public Health and Research Perspectives, 2019;10(2): 102–107. https://doi.org/10.24171/j.phrp.2019.10.2.09

Karekla X, Fang C. Upper body balancing mechanisms and their contribution to increasing bus passenger safety. Safety Science, 2021;133: 105014. https://doi.org/10.1016/j.ssci.2020.105014