Acute effect of foot orthoses on frequency domain of ground reaction forces in male children with flexible flatfeet during walking

Alavi-Mehr, Seyed Majid; Jafarnezhadgero, AmirAli; Esker, Fatemeh Salari; Zago, Matteo

doi:10.1016/j.foot.2018.05.003

Cited by 10 publications

(10 citation statements)

References 58 publications

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“…27 Overall, amplitudes of vertical GRFs components at posttest were lower than at pretest. These results are consistent with the study of Alavi-Mehr et al, 35 although they evaluated the acute effect of FOs on the frequency domain of GRFs in boys with flexible FF. Our results demonstrated that long-term use of FOs could be applied to obtain functional improvements in children with flexible FF.…”

Section: Discussionsupporting

confidence: 92%

The Long-Term Wearing of Foot Orthoses Can Change the Frequency Domain of Ground Reaction Forces in Children with Flexible Flat Feet

et al. 2021

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Introduction: Analyzing the frequency content of ground reaction forces (GRFs) might be helpful when assessing gait abnormalities in children with flexible flatfeet. The aims of this study were therefore to evaluate 1) differences in GRF frequency content between children with and without flatfeet; and 2) whether the long-term wearing of foot orthoses changes the GRF frequency contents in children with flatfeet. Materials and Methods: This is a pre-post study design. GRFs were collected at baseline for boys both with and without flatfeet. Boys with flatfeet wore custom-made foot orthoses with unique shoes for 4 months; GRFs were collected for the flatfeet group after 4 months too. Data were collected while participants wore shoes without foot orthoses in the pretest and shoes with foot orthoses in the posttest. GRFs were collected during walking by two Kistler force platforms (each force plate was used for each leg). Multivariate analysis of variance (MANOVA) test and a separate 2 (side: dominant vs. nondominant) Â 2 (time: pretest vs. posttest) ANOVA with repeated measures were used for statistical analysis. Results: The flatfeet group indicated lower vertical GRF frequency (P = 0.003; d = 1.21; 95% confidence interval [CI], 7.12-7.59) and greater vertical amplitude of harmonic 16 for the nondominant limb (P = 0.030; d = 0.71; 95% CI, 0.0001-0.0022) than the normal feet group. No significant differences in GRF frequency content were found for the dominant limb between pretest and posttest (P > 0.05; d = 0.01-039). However, for nondominant limb, vertical GRF frequency content (P < 0.001; d = 0.85; 95% CI, 6.21-7.36) was diminished at posttest compared with pretest. In the nondominant limb, the anteroposterior GRF frequency with a power of 99.5% showed a significant increase at posttest compared with pretest (P = 0.025; d = 0.50; 95% CI,. For both limbs, amplitudes of three-dimensional GRF components were lower at posttest than at pretest (P < 0.05; d = 0.0.14-1.20; 95% CI, −0.0005 to −0.0083). Conclusions: The results indicated lower GRF frequency content and amplitudes after long-term wearing of foot orthoses. Therefore, long-term wearing of foot orthoses may be applied to obtain functional improvements in children with flatfeet. Clinical Relevance: Clinicians are advised to apply foot orthoses to improve functions in children with flatfeet.

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Section: Discussionsupporting

confidence: 92%

The Long-Term Wearing of Foot Orthoses Can Change the Frequency Domain of Ground Reaction Forces in Children with Flexible Flat Feet

et al. 2021

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“…The absence of a significant difference between groups may be related to the characteristics of the WBB measuring equipment, which (only can) measure the magnitude of the force applied in the vertical direction. Previously, (31), also reported no difference in GRF in the vertical direction for male children with and without an orthosis.…”

Section: Discussionmentioning

confidence: 84%

The Comparison of the Difference in Foot Pressure, Ground Reaction Force, and Balance Ability According to the Foot Arch Height in Young Adults

Song¹,

samho²,

Lee³

2021

Ann Appl Sport Sci

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“…To eliminate foot size and footwear as confounding factors, all of the participants were tested with the identical high-top basketball shoes (Wade 6, Li Ning, Beijing, China) with US size 9.0 were used with the two orthoses conditions (medial-arch support versus flat control) for this study. The tested orthoses were fabricated with the insole milling machines (CNC Milling machine, Vulcan series, Sensor Medica, Italy) and the height of medial-arch support and forefoot/rearfoot thickness were based upon previous studies (Alavi-Mehr et al, 2018;Zhai et al, in press). The two orthoses were identical in terms of material, thickness and hardness, except for the inclusion of medial-arch support (see Fig.…”

Section: Orthosis and Shoe Conditionsmentioning

confidence: 99%

Effects of foot orthoses on dynamic balance and basketball free-throw accuracy before and after physical fatigue

Lam

Lee

et al. 2019

Journal of Biomechanics

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Acute effect of foot orthoses on frequency domain of ground reaction forces in male children with flexible flatfeet during walking

Cited by 10 publications

References 58 publications

The Long-Term Wearing of Foot Orthoses Can Change the Frequency Domain of Ground Reaction Forces in Children with Flexible Flat Feet

The Long-Term Wearing of Foot Orthoses Can Change the Frequency Domain of Ground Reaction Forces in Children with Flexible Flat Feet

The Comparison of the Difference in Foot Pressure, Ground Reaction Force, and Balance Ability According to the Foot Arch Height in Young Adults

Effects of foot orthoses on dynamic balance and basketball free-throw accuracy before and after physical fatigue

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