Association between the Use of Backpack and Static Foot Posture in Schoolchildren with Static Pronated Foot Posture: A 36-Month Cohort Study
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Design, Setting, and Participants
2.2. Study Variables
2.3. Statistical Methods
3. Results
4. Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Acknowledgments
Conflicts of Interest
References
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All Participants (n = 165) | Backpack Participants (n = 112) | Non-Backpack Participants (n = 53) | p-Value | |
---|---|---|---|---|
Age (years) | 8.37 ± 1.56 | 8.61 ± 1.52 | 7.86 ± 1.53 | 0.004 |
Age categorized, years (%) | ||||
<7 years | 37 (22.4%) | 19 (17.0%) | 18 (34.0%) | 0.015 |
7–9 years | 64 (38.8%) | 43 (38.9%) | 21 (39.6%) | 0.880 |
>9 years | 64 (38.8%) | 50 (44.6%) | 14 (26.4%) | 0.025 |
Gender male (%) | 89 (53.9%) | 60 (53.6%) | 29 (54.7%) | 0.890 |
BMI (kg/m2) | 19.01 ± 3.46 | 19.11 ± 3.29 | 18.79 ± 3.8 | 0.578 |
Overweight–obesity (%) | 11 (6.7%) | 8 (7.1%) | 3 (5.7%) | 0.999 |
Sedentary (%) | 73 (44.2%) | 49 (43.8%) | 24 (45.3%) | 0.853 |
Metatarsal formula (%) | ||||
Index Plus | 37 (22.4%) | 28 (25.0%) | 9 (17.0%) | 0.249 |
Index Plus Minus | 96 (58.2%) | 60 (53.6%) | 36 (67.9%) | 0.081 |
Index Minus | 32 (19.4%) | 24 (21.4%) | 8 (15.1%) | 0.337 |
Foot shape (%) | ||||
Greek foot | 55 (33.3%) | 38 (33.9%) | 17 (32.1%) | 0.814 |
Square foot | 84 (50.9%) | 57 (50.9%) | 27 (50.9%) | 0.995 |
Egyptian foot | 26 (15.8%) | 17 (15.2%) | 9 (17.0%) | 0.767 |
Shoe type | ||||
Sport | 117 (70.9%) | 86 (76.8%) | 31 (58.5%) | 0.016 |
Moccasin | 13 (7.9%) | 7 (6.3%) | 6 (11.3%) | 0.259 |
Ballet flats | 28 (17.0%) | 13 (11.6%) | 15 (28.3%) | 0.008 |
Mary Janes | 7 (4.2%) | 6 (5.4%) | 1 (1.9%) | 0.302 |
All Participants | Backpack Participants | Non-Backpack Participants | |||||||
---|---|---|---|---|---|---|---|---|---|
Baseline | 36 Months | p-Value | Baseline | 36 Months | p-Value | Baseline | 36 Months | p-Value | |
Talar head palpation | 1.27 ± 0.51 | 1.19 ± 0.52 | 0.034 | 1.27 ± 0.50 | 1.20 ± 0.51 | 0.158 | 1.28 ± 0.57 | 1.17 ± 0.54 | 0.083 |
Curves at malleolus | 1.10 ± 0.45 | 0.94 ± 0.58 | 0.003 | 1.10 ± 0.46 | 0.92 ± 0.60 | 0.007 | 1.11 ± 0.42 | 0.98 ± 0.53 | 0.180 |
Inversion/Eversion calcaneus | 1.07 ± 0.48 | 0.89 ± 0.48 | 0.001 | 1.07 ± 0.47 | 0.89 ± 0.49 | 0.005 | 1.06 ± 0.49 | 0.89 ± 0.46 | 0.060 |
TNJ prominence | 1.10 ± 0.50 | 0.94 ± 0.57 | 0.006 | 1.06 ± 0.45 | 0.95 ± 0.51 | 0.058 | 1.17 ± 0.61 | 0.92 ± 0.67 | 0.046 |
Congruence of medial arch | 1.08 ± 0.46 | 0.92 ± 0.51 | 0.002 | 1.11 ± 0.45 | 0.94 ± 0.48 | 0.003 | 1.02 ± 0.50 | 0.89 ± 0.54 | 0.196 |
Ab/adduction forefoot–rearfoot | 1.27 ± 0.55 | 0.98 ± 0.49 | <0.001 | 1.29 ± 0.54 | 0.99 ± 0.51 | <0.001 | 1.21 ± 0.56 | 0.94 ± 0.45 | 0.003 |
Total SCORE FPI | 6.87 ± 1.15 | 5.86 ± 1.79 | <0.001 | 6.88 ± 1.18 | 5.89 ± 1.79 | <0.001 | 6.85 ± 1.11 | 5.79 ± 1.82 | <0.001 |
Univariate Analysis | Multivariate Analysis | |||||
---|---|---|---|---|---|---|
FPI Neutral n = 76 | FPI Pronated n = 89 | OR (CI%95) | p-Value | aOR (CI%95) | p-Value | |
Backpack | 45 (59.2%) | 67 (75.3%) | 2.09 (1.08–4.09) | 0.028 | 1.94 (1.02–3.82) | 0.048 |
Age (year) | - | - | 0.95 (0.78–1.16) | 0.629 | - | - |
Age categorized | ||||||
Age < 7 years | 16 (21.1%) | 21 (23.6%) | 1.15 (0.55–2.42) | 0.696 | - | - |
Age 7–9 years | 28 (36.8%) | 36 (40.4%) | 1.16 (0.62–2.18) | 0.635 | - | - |
Age > 9 years | 32 (42.1%) | 32 (36.0%) | 0.77 (0.41–1.44) | 0.419 | - | - |
Gender male (%) | 40 (52.6%) | 49 (55.1%) | 1.10 (0.59–2.03) | 0.755 | - | - |
BMI (kg/m2) | - | - | 0.470 | |||
Overweight–obesity (%) | 4 (5.3%) | 7 (7.9%) | 1.53 (0.43–5.46) | 0.550 | - | |
Sedentary (%) | 31 (40.8%) | 42 (47.2%) | 1.29 (0.69–2.40) | 0.409 | - | - |
Metatarsal formula (%) | ||||||
Index Plus | 14 (18.4%) | 23 (25.8%) | 1.54 (0.72–3.26) | 0.255 | - | - |
Index Plus Minus | 46 (60.5%) | 50 (56.2%) | 0.83 (0.44–1.55) | 0.573 | - | - |
Index Minus | 16 (21.1%) | 16 (18.0%) | 0.82 (0.38–1.78) | 0.619 | ||
Foot shape (%) | ||||||
Greek foot | 23 (30.3%) | 32 (36.0%) | 1.29 (0.67–2.48) | 0.439 | - | - |
Square foot | 44 (57.9%) | 40 (44.9%) | 0.59 (0.32–1.10) | 0.097 | 0.57 (0.30–1.08) | 0.090 |
Egyptian foot | 9 (11.8%) | 17 (19.1%) | 1.75 (0.73–4.21) | 0.202 | - | - |
Shoe type | ||||||
Sport | 51 (67.1%) | 66 (74.2%) | 1.40 (0.71–2.76) | 0.320 | - | - |
Moccasin | 7 (9.2%) | 6 (6.7%) | 0.71 (0.22–2.22) | 0.557 | - | - |
Ballet flats | 17 (22.4%) | 11 (12.4%) | 0.48 (0.21–1.12) | 0.088 | 0.56 (0.23–1.33) | 0.190 |
Mary Janes | 1 (1.3%) | 6 (6.7%) | 5.42 (0.63–46.07) | 0.125 | - | - |
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Alfageme-García, P.; Calderón-García, J.F.; Martínez-Nova, A.; Hidalgo-Ruiz, S.; Basilio-Fernández, B.; Rico-Martín, S. Association between the Use of Backpack and Static Foot Posture in Schoolchildren with Static Pronated Foot Posture: A 36-Month Cohort Study. Children 2021, 8, 800. https://doi.org/10.3390/children8090800
Alfageme-García P, Calderón-García JF, Martínez-Nova A, Hidalgo-Ruiz S, Basilio-Fernández B, Rico-Martín S. Association between the Use of Backpack and Static Foot Posture in Schoolchildren with Static Pronated Foot Posture: A 36-Month Cohort Study. Children. 2021; 8(9):800. https://doi.org/10.3390/children8090800
Chicago/Turabian StyleAlfageme-García, Pilar, Julián Fernando Calderón-García, Alfonso Martínez-Nova, Sonia Hidalgo-Ruiz, Belinda Basilio-Fernández, and Sergio Rico-Martín. 2021. "Association between the Use of Backpack and Static Foot Posture in Schoolchildren with Static Pronated Foot Posture: A 36-Month Cohort Study" Children 8, no. 9: 800. https://doi.org/10.3390/children8090800