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Kirk MM, Dobson JA, Mattock JPM, Coltman CE, Steele JR. Do foot type classifications differ between male and female netball players? A cluster analysis. ERGONOMICS 2024:1-10. [PMID: 38613447 DOI: 10.1080/00140139.2024.2339437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 03/31/2024] [Indexed: 04/15/2024]
Abstract
We must better understand the foot type classifications of netball players to develop sex and size-specific shoe lasts. Five hundred and two representative-level netball players (n = 251 male; n = 251 female) had their feet three-dimensionally scanned. A validated MATLAB code was used to extract six different foot measurements from these scans automatically. We then used a two-step cluster analysis and chi-squared tests to classify foot types and determine the effect of sex on each cluster, respectively. Five foot types were identified (Extra long-and-wide, Long-and-wide, Flat, Tapered and Short-and-narrow), with sex significantly affecting foot type classification. The feet of players wearing smaller shoe sizes were often Short-and-narrow and Tapered, whereas the feet of players wearing larger sizes tended to be more Extra long-and-wide and Long-and-wide. These results highlight that netball players have a wide variety of foot types; manufacturers should use these data to develop future grading systems to improve the fit and functionality of netball-specific footwear.
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Affiliation(s)
- Maddison M Kirk
- Biomechanics Research Laboratory, School of Medical, Indigenous & Health Sciences, Faculty of Science, Medicine & Health, University of Wollongong, Wollongong, Australia
| | - Jessica A Dobson
- Biomechanics Research Laboratory, School of Medical, Indigenous & Health Sciences, Faculty of Science, Medicine & Health, University of Wollongong, Wollongong, Australia
| | - Joshua P M Mattock
- Biomechanics Research Laboratory, School of Medical, Indigenous & Health Sciences, Faculty of Science, Medicine & Health, University of Wollongong, Wollongong, Australia
| | - Celeste E Coltman
- University of Canberra Research Institute for Sport and Exercise, Faculty of Health, University of Canberra, Canberra, Australia
| | - Julie R Steele
- Biomechanics Research Laboratory, School of Medical, Indigenous & Health Sciences, Faculty of Science, Medicine & Health, University of Wollongong, Wollongong, Australia
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2
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Kirk MM, Dobson JA, Mattock JPM, Coltman CE, Steele JR. Do the feet of male and female netball players differ in shape? Implications for shoe design. J Sports Sci 2024; 42:483-489. [PMID: 38594899 DOI: 10.1080/02640414.2024.2338335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 03/27/2024] [Indexed: 04/11/2024]
Abstract
A large proportion of netball players suffer foot-related problems and pain and are dissatisfied with current netball-specific footwear. To improve the fit and functionality of netball-specific shoes, we must understand the shape of these players' feet and determine whether any sex differences exist. Five hundred and two representative-level netball players (n = 251 male; n = 251 female) had their feet three-dimensionally scanned. We then used a validated MATLAB code to automatically extract 10 measurements to characterise each participant's foot shape. Differences between men and women for the absolute values and those normalised to foot length and stature were identified using independent samples t-tests with a Bonferroni adjusted alpha level. The size and shape of male netball players' feet differed significantly from their female counterparts. Males had significantly larger absolute and normalised foot measurements than females, notably at the ball of the foot, heel and instep (p < 0.001). Netball shoe manufacturers should develop unique lasts for each sex and foot size and should offer a more extensive range of shoe lengths and widths to netball players. Such considerations will help optimise shoe fit and comfort and, in turn, reduce foot-related problems and pain associated with ill-fitting footwear.
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Affiliation(s)
- Maddison M Kirk
- Biomechanics Research Laboratory, School of Medical, Indigenous & Health Sciences, Faculty of Science, Medicine & Health, University of Wollongong, Canberra, Australian Capital Territory, Australia
| | - Jessica A Dobson
- Biomechanics Research Laboratory, School of Medical, Indigenous & Health Sciences, Faculty of Science, Medicine & Health, University of Wollongong, Canberra, Australian Capital Territory, Australia
| | - Joshua P M Mattock
- Biomechanics Research Laboratory, School of Medical, Indigenous & Health Sciences, Faculty of Science, Medicine & Health, University of Wollongong, Canberra, Australian Capital Territory, Australia
| | - Celeste E Coltman
- Research Institute for Sport and Exercise, Faculty of Health, University of Canberra, Australia
| | - Julie R Steele
- Biomechanics Research Laboratory, School of Medical, Indigenous & Health Sciences, Faculty of Science, Medicine & Health, University of Wollongong, Canberra, Australian Capital Territory, Australia
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3
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Allan JJ, Munteanu SE, Bonanno DR, Buldt AK, Choppin S, Bullas A, Pearce N, Menz HB. Methodological and statistical approaches for the assessment of foot shape using three-dimensional foot scanning: a scoping review. J Foot Ankle Res 2023; 16:24. [PMID: 37106385 PMCID: PMC10134589 DOI: 10.1186/s13047-023-00617-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 03/21/2023] [Indexed: 04/29/2023] Open
Abstract
OBJECTIVE The objectives of this study were to: (i) review and provide a narrative synthesis of three-dimensional (3D) foot surface scanning methodological and statistical analysis protocols, and (ii) develop a set of recommendations for standardising the reporting of 3D foot scanning approaches. METHODS A systematic search of the SCOPUS, ProQuest, and Web of Science databases were conducted to identify papers reporting 3D foot scanning protocols and analysis techniques. To be included, studies were required to be published in English, have more than ten participants, and involve the use of static 3D surface scans of the foot. Papers were excluded if they reported two-dimensional footprints only, 3D scans that did not include the medial arch, dynamic scans, or derived foot data from a full body scan. RESULTS The search yielded 78 relevant studies from 17 different countries. The available evidence showed a large variation in scanning protocols. The subcategories displaying the most variation included scanner specifications (model, type, accuracy, resolution, capture duration), scanning conditions (markers, weightbearing, number of scans), foot measurements and definitions used, and statistical analysis approaches. A 16-item checklist was developed to improve the consistency of reporting of future 3D scanning studies. CONCLUSION 3D foot scanning methodological and statistical analysis protocol consistency and reporting has been lacking in the literature to date. Improved reporting of the included subcategories could assist in data pooling and facilitate collaboration between researchers. As a result, larger sample sizes and diversification of population groups could be obtained to vastly improve the quantification of foot shape and inform the development of orthotic and footwear interventions and products.
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Affiliation(s)
- Jamie J Allan
- Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, VIC, 3086, Australia.
| | - Shannon E Munteanu
- Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Daniel R Bonanno
- Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Andrew K Buldt
- Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Simon Choppin
- Advanced Wellbeing Research Centre, Sheffield Hallam University, Sheffield, S9 3TU, UK
| | - Alice Bullas
- Advanced Wellbeing Research Centre, Sheffield Hallam University, Sheffield, S9 3TU, UK
| | - Natalie Pearce
- La Trobe Library, La Trobe University, Melbourne, VIC, 3086, Australia
| | - Hylton B Menz
- Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Melbourne, VIC, 3086, Australia
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Footwear-to-feet examination and analysis: Comparing worn footwear to persons and human remains. Sci Justice 2023; 63:54-60. [PMID: 36631181 DOI: 10.1016/j.scijus.2022.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/29/2022] [Accepted: 11/11/2022] [Indexed: 11/24/2022]
Abstract
Footwear-to-feet examination and analysis refers to the process of examining and analyzing footwear in regard to criminal matters. This examination and analysis has been done to include or exclude an individual as the wearer of the footwear in question and to help associate or disassociate human remains to footwear. This review of the subject describes its investigative applications, the research that underpins the process, and considers its legal admissibility. The process of footwear-to-feet examination and analysis is scientifically valid and has been widely accepted. As a result, law enforcement and forensic scientists should be aware of the use of this process to assist in criminal investigations.
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Choffin Z, Jeong N, Callihan M, Sazonov E, Jeong S. Lower Body Joint Angle Prediction Using Machine Learning and Applied Biomechanical Inverse Dynamics. SENSORS (BASEL, SWITZERLAND) 2022; 23:228. [PMID: 36616825 PMCID: PMC9824079 DOI: 10.3390/s23010228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/21/2022] [Accepted: 12/23/2022] [Indexed: 06/17/2023]
Abstract
Extreme angles in lower body joints may adversely increase the risk of injury to joints. These injuries are common in the workplace and cause persistent pain and significant financial losses to people and companies. The purpose of this study was to predict lower body joint angles from the ankle to the lumbosacral joint (L5S1) by measuring plantar pressures in shoes. Joint angle prediction was aided by a designed footwear sensor consisting of six force-sensing resistors (FSR) and a microcontroller fitted with Bluetooth LE sensors. An Xsens motion capture system was utilized as a ground truth validation measuring 3D joint angles. Thirty-seven human subjects were tested squatting in an IRB-approved study. The Gaussian Process Regression (GPR) linear regression algorithm was used to create a progressive model that predicted the angles of ankle, knee, hip, and L5S1. The footwear sensor showed a promising root mean square error (RMSE) for each joint. The L5S1 angle was predicted to be RMSE of 0.21° for the X-axis and 0.22° for the Y-axis, respectively. This result confirmed that the proposed plantar sensor system had the capability to predict and monitor lower body joint angles for potential injury prevention and training of occupational workers.
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Affiliation(s)
- Zachary Choffin
- Department of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Nathan Jeong
- Department of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Michael Callihan
- Capstone College of Nursing, University of Alabama, Tuscaloosa, AL 35487, USA
| | - Edward Sazonov
- Department of Electrical and Computer Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Seongcheol Jeong
- Department of Electrical Engineering, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
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Jiao Y, Džeroski S, Jurca A. Analysis of hallux valgus angles automatically extracted from 3D foot scans taken in North America, Europe, and Asia. ERGONOMICS 2022:1-12. [PMID: 36269073 DOI: 10.1080/00140139.2022.2139415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
The forefoot is the foot part most affected by ill-fitting shoes. Footwear fitting considers the measurements of length, width, and arch length. Toe shape has not yet been used in sizing feet and fitting shoes. This study aims to investigate the variation in toe shape, as measured by the hallux valgus angle. An automatic and reproducible hallux valgus angle measuring method using 3D foot scans with no palpation markers is proposed and applied to about half a million samples collected across North America, Europe, and Asia. The measuring method is robust and can detect the medial contour along the proximal phalanx even in extreme cases. The hallux valgus angle has a normal distribution with long tails on both sides in the general population. Large dispersions of HVA values were observed for both genders and in all three geographical regions. Practitioner summary: The hallux valgus angle has a broad distribution in the general population. Females have larger hallux valgus angles than males, and people from Asia have larger hallux valgus angles than people from North America and Europe. Shoe toe boxes should be designed to fit the actual shapes of shoppers' toes. The proposed method for measuring HVA opens a new opportunity to study the causal relationship between shoe wearing habits and HVA on a large scale.
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Affiliation(s)
| | - Sašo Džeroski
- Jozef Stefan Institute, Ljubljana, Slovenia
- Jozef Stefan International Postgraduate School, Ljubljana, Slovenia
| | - Ales Jurca
- Volumental AB, Stockholm, Sweden
- Jozef Stefan International Postgraduate School, Ljubljana, Slovenia
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7
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Jo J, Sokolowski S, McQuerry M, Griffin L, Park H. Firefighters' feet: Differences by sex and weight-bearing. APPLIED ERGONOMICS 2022; 102:103753. [PMID: 35344794 DOI: 10.1016/j.apergo.2022.103753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 03/10/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
Firefighters have reported their protective boots to be bulky and ill-fitting, which they believe restrict the lower body movement on the unpredictable fireground. This study used 3D foot scanning to compare the shape of firefighters' feet to the general population, the shape of female firefighters' feet to males, and the impact of the heavy fire gear on foot shape. The results found the foot breadth of firefighters was larger than the general population and the feet of female firefighters were slimmer than males. Furthermore, it revealed that the feet of firefighters became longer, wider, and flatter when bearing the weight of fire gear. Protective boots should be designed based on the foot shape and dimensions of the actual population, with consideration of sex differences and the impact of weight-bearing for their safety.
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Affiliation(s)
- Jeyeon Jo
- Cornell University, 255 Human Ecology Building, 37 Forest Home Dr, NY, 14853, Ithaca, USA.
| | | | - Meredith McQuerry
- Florida State University, 236 Shaw Building, 644 West Call Street, FL, 32306, Tallahassee, USA.
| | - Linsey Griffin
- University of Minnesota, 350 McNeal Hall, 1985 Buford Ave, MN, 55108, St. Paul, USA.
| | - Huiju Park
- Cornell University, 131 Human Ecology Building, 37 Forest Home Dr, NY, 14853, Ithaca, USA.
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8
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Puszczalowska-Lizis E, Koziol K, Omorczyk J. Perception of footwear comfort and its relationship with the foot structure among youngest-old women and men. PeerJ 2021; 9:e12385. [PMID: 34722004 PMCID: PMC8532988 DOI: 10.7717/peerj.12385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 10/04/2021] [Indexed: 11/20/2022] Open
Abstract
Background Adequate footwear comfort and functionality are important regardless of age, but they become particularly important in the youngest-old women and men, mainly due to the fact that this age range is the initial period of old age with changes in shoe preferences. The aim of this study was to assess the perception of footwear comfort and its relationship with the feet structure in youngest-old women and men. Methods The cross-sectional study covered community dwellers living on their own aged 65–74 years (50 women; 50 men). The feet characteristics were measured using the CQ-ST podoscope (Electronic System, Ltd, EU), and the perception of footwear comfort was assessed with a visual analogue scale. The assessment took into account gender-specific footwear of a certain brand (Befado Dr orto). Results Statistically significant intergender differences were observed in the perception of footwear comfort with respect to the shoe heel width (p = 0.022), the arch height (p = 0.013), the overall comfort (p = 0.049) and the material properties of the footwear (p = 0.017). In women, there were statistically significant positive relationships among the heel angle (γ) and the perception of footwear comfort in terms of heel cushioning (p = 0.021), forefoot cushioning (p = 0.015), arch height (p = 0.029). In men, there was a statistically significant negative relationship of the left foot Clarke’s angle with the heel height (p = 0.043), and a positive relationship between the right foot width and the arch height (p = 0.044). Conclusions Youngest-old women, compared to men of the same age range, have a higher perception of shoe comfort in terms of the shoe heel width, the arch height, the overall comfort of the footwear and the material properties of the footwear. The appropriate profile and construction of the shoe allows for an increase in the contact surface of the foot with the shoe, hence the improvement in the perception of footwear comfort in people with lowered arch or widened forefoot.
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Affiliation(s)
| | | | - Jaroslaw Omorczyk
- Faculty of Physical Education and Sport, Institute of Sport, University of Physical Education in Krakow, Krakow, Poland
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9
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Cheng KW, Peng Y, Chen TLW, Zhang G, Cheung JCW, Lam WK, Wong DWC, Zhang M. A Three-Dimensional Printed Foot Orthosis for Flexible Flatfoot: An Exploratory Biomechanical Study on Arch Support Reinforcement and Undercut. MATERIALS (BASEL, SWITZERLAND) 2021; 14:5297. [PMID: 34576526 PMCID: PMC8469370 DOI: 10.3390/ma14185297] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/03/2021] [Accepted: 09/12/2021] [Indexed: 11/18/2022]
Abstract
The advancement of 3D printing and scanning technology enables the digitalization and customization of foot orthosis with better accuracy. However, customized insoles require rectification to direct control and/or correct foot deformity, particularly flatfoot. In this exploratory study, we aimed at two design rectification features (arch stiffness and arch height) using three sets of customized 3D-printed arch support insoles (R+U+, R+U-, and R-U+). The arch support stiffness could be with or without reinforcement (R+/-) and the arch height may or may not have an additional elevation, undercutting (U+/-), which were compared to the control (no insole). Ten collegiate participants (four males and six females) with flexible flatfoot were recruited for gait analysis on foot kinematics, vertical ground reaction force, and plantar pressure parameters. A randomized crossover trial was conducted on the four conditions and analyzed using the Friedman test with pairwise Wilcoxon signed-rank test. Compared to the control, there were significant increases in peak ankle dorsiflexion and peak pressure at the medial midfoot region, accompanied by a significant reduction in peak pressure at the hindfoot region for the insole conditions. In addition, the insoles tended to control hindfoot eversion and forefoot abduction though the effects were not significant. An insole with stronger support features (R+U+) did not necessarily produce more favorable outcomes, probably due to over-cutting or impingement. The outcome of this study provides additional data to assist the design rectification process. Future studies should consider a larger sample size with stratified flatfoot features and covariating ankle flexibility while incorporating more design features, particularly medial insole postings.
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Affiliation(s)
- Ka-Wing Cheng
- Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China; (K.-W.C.); (Y.P.); (T.L.-W.C.); (G.Z.); (J.C.-W.C.)
| | - Yinghu Peng
- Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China; (K.-W.C.); (Y.P.); (T.L.-W.C.); (G.Z.); (J.C.-W.C.)
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
| | - Tony Lin-Wei Chen
- Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China; (K.-W.C.); (Y.P.); (T.L.-W.C.); (G.Z.); (J.C.-W.C.)
| | - Guoxin Zhang
- Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China; (K.-W.C.); (Y.P.); (T.L.-W.C.); (G.Z.); (J.C.-W.C.)
| | - James Chung-Wai Cheung
- Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China; (K.-W.C.); (Y.P.); (T.L.-W.C.); (G.Z.); (J.C.-W.C.)
| | - Wing-Kai Lam
- Guangdong Provincial Engineering Technology Research Center for Sports Assistive Devices, Guangzhou Sport University, Guangzhou 510000, China;
- Department of Kinesiology, Shenyang Sport University, Shenyang 110102, China
- Li Ning Sports Science Research Center, Li Ning (China) Sports Goods Company, Beijing 101111, China
| | - Duo Wai-Chi Wong
- Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China; (K.-W.C.); (Y.P.); (T.L.-W.C.); (G.Z.); (J.C.-W.C.)
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
| | - Ming Zhang
- Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, China; (K.-W.C.); (Y.P.); (T.L.-W.C.); (G.Z.); (J.C.-W.C.)
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen 518057, China
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Saeedi H, Azadinia F, Jalali M, Bagheripour B, Ronasi P, Ershadi FS. Shoes with elastic upper vs. shoes with a round toe box for perceived comfort and interdigital forefoot pressure in patients with hallux valgus deformity. FOOTWEAR SCIENCE 2021. [DOI: 10.1080/19424280.2021.1950216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Hassan Saeedi
- Rehabilitation Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Azadinia
- Rehabilitation Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Maryam Jalali
- Rehabilitation Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Batoul Bagheripour
- Department of Orthotics and Prosthetics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Paniz Ronasi
- Rehabilitation Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Farhoud Saeid Ershadi
- Department of Orthotics and Prosthetics, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
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11
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Choffin Z, Jeong N, Callihan M, Olmstead S, Sazonov E, Thakral S, Getchell C, Lombardi V. Ankle Angle Prediction Using a Footwear Pressure Sensor and a Machine Learning Technique. SENSORS (BASEL, SWITZERLAND) 2021; 21:3790. [PMID: 34070843 PMCID: PMC8198704 DOI: 10.3390/s21113790] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/24/2021] [Accepted: 05/27/2021] [Indexed: 11/16/2022]
Abstract
Ankle injuries may adversely increase the risk of injury to the joints of the lower extremity and can lead to various impairments in workplaces. The purpose of this study was to predict the ankle angles by developing a footwear pressure sensor and utilizing a machine learning technique. The footwear sensor was composed of six FSRs (force sensing resistors), a microcontroller and a Bluetooth LE chipset in a flexible substrate. Twenty-six subjects were tested in squat and stoop motions, which are common positions utilized when lifting objects from the floor and pose distinct risks to the lifter. The kNN (k-nearest neighbor) machine learning algorithm was used to create a representative model to predict the ankle angles. For the validation, a commercial IMU (inertial measurement unit) sensor system was used. The results showed that the proposed footwear pressure sensor could predict the ankle angles at more than 93% accuracy for squat and 87% accuracy for stoop motions. This study confirmed that the proposed plantar sensor system is a promising tool for the prediction of ankle angles and thus may be used to prevent potential injuries while lifting objects in workplaces.
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Affiliation(s)
- Zachary Choffin
- Department of Electrical and Computer Engineering, University of Alabama, Tuscaloosa, AL 35487, USA; (Z.C.); (S.O.); (E.S.)
| | - Nathan Jeong
- Department of Electrical and Computer Engineering, University of Alabama, Tuscaloosa, AL 35487, USA; (Z.C.); (S.O.); (E.S.)
| | - Michael Callihan
- College of Nursing, University of Alabama, Tuscaloosa, AL 35487, USA; (M.C.); (S.T.); (C.G.); (V.L.)
| | - Savannah Olmstead
- Department of Electrical and Computer Engineering, University of Alabama, Tuscaloosa, AL 35487, USA; (Z.C.); (S.O.); (E.S.)
| | - Edward Sazonov
- Department of Electrical and Computer Engineering, University of Alabama, Tuscaloosa, AL 35487, USA; (Z.C.); (S.O.); (E.S.)
| | - Sarah Thakral
- College of Nursing, University of Alabama, Tuscaloosa, AL 35487, USA; (M.C.); (S.T.); (C.G.); (V.L.)
| | - Camilee Getchell
- College of Nursing, University of Alabama, Tuscaloosa, AL 35487, USA; (M.C.); (S.T.); (C.G.); (V.L.)
| | - Vito Lombardi
- College of Nursing, University of Alabama, Tuscaloosa, AL 35487, USA; (M.C.); (S.T.); (C.G.); (V.L.)
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12
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Hassan NM, Buldt AK, Shields N, Landorf KB, Menz HB, Munteanu SE. Differences in foot dimensions between children and adolescents with and without Down syndrome. Disabil Rehabil 2021; 44:3959-3966. [PMID: 33705670 DOI: 10.1080/09638288.2021.1895897] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
PURPOSE This study compared the differences in foot dimensions between children with and without Down syndrome using three-dimensional (3D) foot scans. METHODS 51 children with and 51 children without Down syndrome had a 3D scan taken of their right foot to compare the absolute and normalised (for height or foot length) measurements. RESULTS Normalised foot length was shorter in children with Down syndrome (MD -11.62 mm, 95% CI -15.06 to -8.18, p < 0.001). When normalised for foot length, ball of foot length (MD 2.87 mm, 95% CI 1.17 to 4.58, p = 0.001), diagonal and horizontal foot width (MD 3.65 mm, 95% CI 1.65 to 5.66, p < 0.001; MD 4.80 mm, 95% CI 2.88 to 6.72, p < 0.001, respectively), ball and instep girth (MD 10.60 mm, 95% CI 5.96 to 15.25, p < 0.001; MD 7.92 mm, 95% CI 3.02 to 12.82, p = 0.002, respectively) and fifth toe height (MD 3.14 mm, 95% CI 2.22 to 4.07, p < 0.001) were greater in children with Down syndrome. CONCLUSIONS Children with Down syndrome have shorter, wider feet with greater girth and fifthtoe height measurements relative to children without Down syndrome. These findings have implications for footwear fit and the manufacturing of population-specific footwear.IMPLICATIONS FOR REHABILITATIONFootwear-fitting issues arise as a result of the unique foot shape of children with Down syndrome.There are substantial variations in the foot shape of children with and without Down syndrome.Children with Down syndrome require wider, deeper footwear at a given length to accommodate their foot dimensions.These findings have implications for the manufacturing of population-specific footwear.
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Affiliation(s)
- Nirmeen M Hassan
- Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Victoria, Australia.,Living with Disability Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Victoria, Australia
| | - Andrew K Buldt
- Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Victoria, Australia.,La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Victoria, Australia
| | - Nora Shields
- Living with Disability Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Victoria, Australia.,La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Victoria, Australia.,Discipline of Physiotherapy, School of Allied Health, Human Services and Sport, La Trobe University, Victoria, Australia
| | - Karl B Landorf
- Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Victoria, Australia.,La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Victoria, Australia
| | - Hylton B Menz
- Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Victoria, Australia.,La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Victoria, Australia
| | - Shannon E Munteanu
- Discipline of Podiatry, School of Allied Health, Human Services and Sport, La Trobe University, Victoria, Australia.,La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Victoria, Australia
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13
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Alcacer A, Epifanio I, Ibáñez MV, Simó A, Ballester A. A data-driven classification of 3D foot types by archetypal shapes based on landmarks. PLoS One 2020; 15:e0228016. [PMID: 31999749 PMCID: PMC6991988 DOI: 10.1371/journal.pone.0228016] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 01/05/2020] [Indexed: 12/29/2022] Open
Abstract
The taxonomy of foot shapes or other parts of the body is important, especially for design purposes. We propose a methodology based on archetypoid analysis (ADA) that overcomes the weaknesses of previous methodologies used to establish typologies. ADA is an objective, data-driven methodology that seeks extreme patterns, the archetypal profiles in the data. ADA also explains the data as percentages of the archetypal patterns, which makes this technique understandable and accessible even for non-experts. Clustering techniques are usually considered for establishing taxonomies, but we will show that finding the purest or most extreme patterns is more appropriate than using the central points returned by clustering techniques. We apply the methodology to an anthropometric database of 775 3D right foot scans representing the Spanish adult female and male population for footwear design. Each foot is described by a 5626 × 3 configuration matrix of landmarks. No multivariate features are used for establishing the taxonomy, but all the information gathered from the 3D scanning is employed. We use ADA for shapes described by landmarks. Women’s and men’s feet are analyzed separately. We have analyzed 3 archetypal feet for both men and women. These archetypal feet could not have been recovered using multivariate techniques.
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Affiliation(s)
- Aleix Alcacer
- Departament de Matemàtiques, Universitat Jaume I, Castelló, Spain
| | - Irene Epifanio
- Departament de Matemàtiques, Universitat Jaume I, Castelló, Spain
- Institut de Matemàtiques i Aplicacions de Castelló, Universitat Jaume I, Castelló, Spain
- * E-mail:
| | - M. Victoria Ibáñez
- Departament de Matemàtiques, Universitat Jaume I, Castelló, Spain
- Institut de Matemàtiques i Aplicacions de Castelló, Universitat Jaume I, Castelló, Spain
| | - Amelia Simó
- Departament de Matemàtiques, Universitat Jaume I, Castelló, Spain
- Institut de Matemàtiques i Aplicacions de Castelló, Universitat Jaume I, Castelló, Spain
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14
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Analysis of 1.2 million foot scans from North America, Europe and Asia. Sci Rep 2019; 9:19155. [PMID: 31844106 PMCID: PMC6914786 DOI: 10.1038/s41598-019-55432-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 11/28/2019] [Indexed: 11/25/2022] Open
Abstract
For decades, footwear brands have developed products using outdated methods and measurements, working with limited insight into the foot shapes and dimensions of their target customers. The integration of 3D scanning technology into footwear retail stores has made it possible for this research to analyze a database containing a large number of male and female 3D foot scans collected across North America, Europe, and Asia. Foot scans were classified into length classes with 5mm length increments; mean width, instep height, and heel width were calculated for each length class. This study confirms the existence of many statistically significant differences in mean foot measurements amongst the regions and between the sexes, and a large dispersion of foot measurements within each group of customers. Therefore, shoes should be developed separately for each group, region, and sex, and at least 3 shoe widths per length class are required to provide a proper fit for 90% of customers. Beyond this, our analysis asserts that a shoe designed for a single group will fit a different segment of the population in another group, and that existing last grading tables should be updated to reflect the foot dimensions of current consumers.
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15
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Kohan L, Martins CR, Oliveira Duarte L, Pinheiro L, Baruque-Ramos J. Panorama of natural fibers applied in Brazilian footwear: materials and market. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0927-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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16
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Abstract
Footwear is a modifiable risk factor for falls in older adults, including populations with metabolic disease, inflammatory arthritis, and neurodegenerative disease. Ill-fitting footwear, and specific design features, such as elevated heels and backless styles, can impair balance control and heighten the risk of falling. Although foot care is routine practice for some older adults to prevent ulceration (eg, diabetes) or relieve symptoms (eg, foot pain), new footwear interventions are emerging with the potential to ameliorate balance and walking impairments. Multifaceted podiatric interventions, which include appropriate footwear and importantly patient education, may have the capacity to reduce falls in older adults.
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17
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Buldt AK, Menz HB. Incorrectly fitted footwear, foot pain and foot disorders: a systematic search and narrative review of the literature. J Foot Ankle Res 2018; 11:43. [PMID: 30065787 PMCID: PMC6064070 DOI: 10.1186/s13047-018-0284-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 07/12/2018] [Indexed: 11/25/2022] Open
Abstract
Background Correct footwear fitting is acknowledged as being vitally important, as incorrectly fitted footwear has been linked to foot pathology. The aim of this narrative review was to determine the prevalence of incorrectly fitted footwear and to examine the association between incorrectly fitted footwear, foot pain and foot disorders. Methods A database search of Ovid MEDLINE and CINAHL yielded 1,681 citations for title and abstract review. Eighteen articles were included. Findings were summarised under the categories of (i) children, (ii) adults, (ii) older people, (iii) people with diabetes and (iii) occupation- or activity-specific footwear. Differences in footwear fitting between sexes were also explored. Results Between 63 and 72% of participants were wearing shoes that did not accommodate either width or length dimensions of their feet. There was also evidence that incorrect footwear fitting was associated with foot pain and foot disorders such as lesser toe deformity, corns and calluses. Specific participant groups, such as children with Down syndrome and older people and people with diabetes were more likely to wear shoes that were too narrow (between 46 and 81%). Conclusion A large proportion of the population wear incorrectly sized footwear, which is associated with foot pain and foot disorders. Greater emphasis should be placed on both footwear fitting education and the provision of an appropriately large selection of shoes that can accommodate the variation in foot morphology among the population, particularly in relation to foot width.
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Affiliation(s)
- Andrew K Buldt
- 1La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, La Trobe University, Bundoora, Melbourne, VIC 3086 Australia.,2Discipline of Podiatry, School of Allied Health, La Trobe University, Melbourne, VIC 3086 Australia
| | - Hylton B Menz
- 1La Trobe Sport and Exercise Medicine Research Centre, School of Allied Health, La Trobe University, Bundoora, Melbourne, VIC 3086 Australia.,2Discipline of Podiatry, School of Allied Health, La Trobe University, Melbourne, VIC 3086 Australia
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18
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Mickle KJ, Nester CJ. Morphology of the Toe Flexor Muscles in Older Adults With Toe Deformities. Arthritis Care Res (Hoboken) 2018; 70:902-907. [PMID: 28834406 DOI: 10.1002/acr.23348] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 08/15/2017] [Indexed: 11/11/2022]
Abstract
OBJECTIVE It has been suggested that atrophied or weak toe flexor muscles are associated with the formation of toe deformities, but there is little evidence to support this theory. This study aimed to determine whether the size of the toe flexor muscles differed in older adults with and without toe deformities. METHODS Forty-four older adults (>60 years) were recruited for the study. Each participant had their feet assessed for the presence of hallux valgus or lesser toe deformities. Intrinsic and extrinsic toe flexor muscles were imaged with an ultrasound system using a standardized protocol. Assessor-blinded measurements of muscle thickness and cross-sectional area were taken using Image J software. RESULTS Participants with lesser toe deformities (n = 20) were found to have significantly smaller quadratus plantae (P = 0.003), flexor digitorum brevis (P = 0.013), abductor hallucis (P = 0.004), and flexor hallucis brevis (P = 0.005) muscles than the participants without any toe deformities (n = 19). Female participants with hallux valgus (n = 10) were found to have significantly smaller abductor hallucis (P = 0.048) and flexor hallucis brevis (P = 0.013) muscles than the female participants without any toe deformities (n = 10; P < 0.05). CONCLUSION This is the first study to use ultrasound to investigate the size of the toe flexor muscles in older adults with hallux valgus and lesser toe deformities compared to otherwise healthy older adults. The sizes of the abductor hallucis and flexor hallucis brevis muscles were decreased in participants with hallux valgus, whereas the quadratus plantae, flexor digitorum brevis, abductor hallucis, and flexor hallucis brevis muscles were smaller in the participants with lesser toe deformities.
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Affiliation(s)
- Karen J Mickle
- Institute of Health and Sport, Victoria University, Footscray Park, Victoria, Australia
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19
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Hill M, Naemi R, Branthwaite H, Chockalingam N. The relationship between arch height and foot length: Implications for size grading. APPLIED ERGONOMICS 2017; 59:243-250. [PMID: 27890134 DOI: 10.1016/j.apergo.2016.08.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 07/03/2016] [Accepted: 08/24/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVE Medial longitudinal Arch Height is synonymous with classifying foot type and conversely foot function. Detailed knowledge of foot anthropometry is essential in the development of ergonomically sound footwear. Current Footwear design incorporates a direct proportionate scaling of instep dimensions with those of foot length. The objective of this paper is to investigate if a direct proportional relationship exists between human arch height parameters and foot length in subjects with normal foot posture. METHOD A healthy convenience sample of 62 volunteers was recruited to participate in this observational study. All subjects were screened for normal foot health and posture. Each subject's foot dimensions were scanned and measured using a 3D Foot Scanner. From this foot length and arch height parameters were obtained. Normalised ratios of arch height with respect to foot length were also calculated. The arch height parameters and the normalised arch ratios were used interchangeably as the dependent variables with the foot length parameters used as the independent variable for Simple Linear Regression and Correlation. RESULTS Analysis of foot length measures demonstrated poor correlation with all arch height parameters. CONCLUSION No significant relationships between arch height and foot length were found. The predictive value of the relationship was found to be poor. This holds significant implications for the current method of proportionate scaling of footwear in terms of fit and function to the midfoot region for a normative population.
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Affiliation(s)
- Matthew Hill
- CSHER, Faculty of Health Sciences, Staffordshire University, Leek Road, Stoke on Trent, ST4 2DF, United Kingdom.
| | - Roozbeh Naemi
- CSHER, Faculty of Health Sciences, Staffordshire University, Leek Road, Stoke on Trent, ST4 2DF, United Kingdom
| | - Helen Branthwaite
- CSHER, Faculty of Health Sciences, Staffordshire University, Leek Road, Stoke on Trent, ST4 2DF, United Kingdom
| | - Nachiappan Chockalingam
- CSHER, Faculty of Health Sciences, Staffordshire University, Leek Road, Stoke on Trent, ST4 2DF, United Kingdom
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20
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21
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Price C, Nester C. Is retail footwear fit for purpose for the feet of adults who are obese? FOOTWEAR SCIENCE 2016. [DOI: 10.1080/19424280.2016.1175517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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22
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Price C, Nester C. Foot dimensions and morphology in healthy weight, overweight and obese males. Clin Biomech (Bristol, Avon) 2016; 37:125-130. [PMID: 27439025 DOI: 10.1016/j.clinbiomech.2016.07.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 07/06/2016] [Accepted: 07/13/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND Overweight and obesity are increasing in prevalence. However, despite reports of poor foot health, the influence of obesity and overweight on adult foot morphology has received limited attention. The objective of this work is to accurately and appropriately quantify the foot morphology of adults who are overweight and obese. METHODS The foot morphology of 23 healthy weight (BMI=22.9kg.m(-2)), overweight (27.5kg.m(-2)) and obese (32.9kg.m(-2)) age (60years) matched males was quantified using a 3D scanner (all size UK 9). Data analysis computed normalised (to foot length) standard anatomical measures, and widths, heights and circumferences of 31 evenly spaced cross-sections of right feet. FINDINGS Anatomical measures of foot, ball and heel width, ball and heel circumference and ball height were all greater in the obese group than the healthy weight (P<0.05). Cross-sectional measures were significantly wider than the healthy group for the majority of measures from 14 to 67% (P=0.025-1.000) of heel-to-toe length. Also, the obese group had significantly higher midfoot regions (P=0.024-0.025). This increased foot height was not evident from anatomical measures, which were not sensitive enough to detect dimensional differences in this foot region. INTERPRETATION Feet of obese adults differ from healthy and overweight individuals, notably they are wider. Data needs to avoid reliance upon discrete anatomical landmarks to describe foot morphology. In the obese, changes in foot shape do not coincide with traditional anatomical landmarks and more comprehensive foot shape data are required to inform footwear design.
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Affiliation(s)
- Carina Price
- Centre for Health Science Research, University of Salford, Salford, England, United Kingdom.
| | - Christopher Nester
- Centre for Health Science Research, University of Salford, Salford, England, United Kingdom
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23
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Mickle KJ, Steele JR. Obese older adults suffer foot pain and foot-related functional limitation. Gait Posture 2015; 42:442-7. [PMID: 26260010 DOI: 10.1016/j.gaitpost.2015.07.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 07/16/2015] [Accepted: 07/20/2015] [Indexed: 02/02/2023]
Abstract
There is evidence to suggest being overweight or obese places adults at greater risk of developing foot complications such as osteoarthritis, tendonitis and plantar fasciitis. However, no research has comprehensively examined the effects of overweight or obesity on the feet of individuals older than 60 years of age. Therefore we investigated whether foot pain, foot structure, and/or foot function is affected by obesity in older adults. Three hundred and twelve Australian men and women, aged over 60 years, completed validated questionnaires to establish the presence of foot pain and health related quality of life. Foot structure (anthropometrics and soft tissue thickness) and foot function (ankle dorsiflexion strength and flexibility, toe flexor strength, plantar pressures and spatiotemporal gait parameters) were also measured. Obese participants (BMI >30) were compared to those who were overweight (BMI=25-30) and not overweight (BMI <25). Obese participants were found to have a significantly higher prevalence of foot pain and scored significantly lower on the SF-36. Obesity was also associated with foot-related functional limitation whereby ankle dorsiflexion strength, hallux and lesser toe strength, stride/step length and walking speed were significantly reduced in obese participants compared to their leaner counterparts. Therefore, disabling foot pain and altered foot structure and foot function are consequences of obesity for older adults, and impact upon their quality of life. Interventions designed to reduce excess fat mass may relieve loading of the foot structures and, in turn, improve foot pain and quality of life for older obese individuals.
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Affiliation(s)
- Karen J Mickle
- Institute of Sport, Exercise & Active Living, College of Sport and Exercise Science, Victoria University, Footscray, VIC 3011, Australia.
| | - Julie R Steele
- Biomechanics Research Laboratory, Faculty of Science, Medicine & Health, University of Wollongong, Wollongong, NSW 2522, Australia
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Saghazadeh M, Kitano N, Okura T. Gender differences of foot characteristics in older Japanese adults using a 3D foot scanner. J Foot Ankle Res 2015; 8:29. [PMID: 26180554 PMCID: PMC4502464 DOI: 10.1186/s13047-015-0087-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 07/06/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Knowledge of gender differences in foot shape assists shoe manufactures with designing appropriate shoes for men and women. Although gender differences in foot shapes are relatively known among young men and women, less is known about how the older men and women's feet differ in shape. A recent development in foot shape assessment is the use of 3D foot scanners. To our knowledge this technology has yet to be used to examine gender differences in foot shape of Japanese older adults. METHODS This cross-sectional study included 151 older men (74.5 ± 5.6 years) and 140 older women (73.9 ± 5.1 years) recruited in Kasama City, Japan. Foot variables were measured in sitting and standing positions using Dream GP Incorporated's 3D foot scanner, Footstep PRO (Osaka, Japan). Scores were analyzed as both raw and normalized to truncated foot length using independent samples t-test and analysis of covariance, respectively. RESULTS In men, the measurement values for navicular height, first and fifth toe and instep heights, ball and heel width, ball girth, arch height index (just standing), arch rigidity index and instep girth were significantly greater than the women's, whereas the first toe angle, in both sitting and standing positions was significantly smaller. However, after normalizing, the differences in ball width, heel width, height of first and fifth toes in both sitting and standing and ball girth in sitting position were nonsignificant. According to Cohen's d, among all the foot variables, the following had large effect sizes in both sitting and standing positions: truncated foot length, instep, navicular height, foot length, ball girth, ball width, heel width and instep girth. CONCLUSION This study provides evidence of anthropometric foot variations between older men and women. These differences need to be considered when manufacturing shoes for older adults.
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Affiliation(s)
- Mahshid Saghazadeh
- Faculty of Health and Sport Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8574 Japan
| | - Naruki Kitano
- Faculty of Health and Sport Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8574 Japan
| | - Tomohiro Okura
- Faculty of Health and Sport Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8574 Japan
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25
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Gender and age related differences in foot morphology. Maturitas 2014; 79:421-7. [DOI: 10.1016/j.maturitas.2014.07.019] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 07/29/2014] [Accepted: 07/30/2014] [Indexed: 12/23/2022]
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Menz HB, Auhl M, Ristevski S, Frescos N, Munteanu SE. Effectiveness of off-the-shelf, extra-depth footwear in reducing foot pain in older people: a randomized controlled trial. J Gerontol A Biol Sci Med Sci 2014; 70:511-7. [PMID: 25205761 DOI: 10.1093/gerona/glu169] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Foot pain is highly prevalent in older people and in many cases is associated with inappropriate footwear. This study evaluated the effectiveness of off-the-shelf, extra-depth footwear in reducing foot pain. METHODS Community-dwelling older people with disabling foot pain (72 men and 48 women aged 65 to 96 years; mean age 82 [SD 8]) were randomly allocated to an intervention group (n = 59) or control group (n = 61). The intervention group was provided with off-the-shelf, extra-depth footwear. Participants in the control group received their footwear at the completion of the study. Both groups continued to receive usual podiatry care for the study period. The primary outcome measure was the Foot Health Status Questionnaire (FHSQ), measured at baseline and 16 weeks. RESULTS There was a significant improvement in the FHSQ pain domain (ANCOVA-adjusted mean difference 11.5 points, 95% confidence interval 4.2 to 18.8, p = .002) and FHSQ function domain (10.0 points, 0.9 to 19.1, p = .032) in the intervention group compared to the control group. The intervention group also developed fewer keratotic lesions (mean difference -1.4, -2.5 to -0.2, p = .021), were less likely to report the use of co-interventions (relative risk [RR] 0.74, 0.56 to 0.98, p = .026) and were more likely to report that their foot pain had moderately or markedly improved during the study (RR = 7.93, 2.51 to 25.00, p < .001; number needed to treat = 3, 2 to 5). CONCLUSIONS Off-the-shelf, extra-depth footwear significantly reduces foot pain, improves foot function and is associated with the development of fewer keratotic lesions in older people.
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Affiliation(s)
- Hylton B Menz
- Lower Extremity and Gait Studies Program, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia. Department of Podiatry, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia.
| | - Maria Auhl
- Department of Podiatry, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia
| | - Sonja Ristevski
- Department of Podiatry, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia
| | - Nicoletta Frescos
- Department of Podiatry, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia
| | - Shannon E Munteanu
- Lower Extremity and Gait Studies Program, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia. Department of Podiatry, School of Allied Health, La Trobe University, Bundoora, Victoria, Australia
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Menz HB, Auhl M, Ristevski S, Frescos N, Munteanu SE. Evaluation of the accuracy of shoe fitting in older people using three-dimensional foot scanning. J Foot Ankle Res 2014; 7:3. [PMID: 24456656 PMCID: PMC3903039 DOI: 10.1186/1757-1146-7-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 01/22/2014] [Indexed: 11/26/2022] Open
Abstract
Background Ill-fitting footwear is a common problem in older people. The objective of this study was to determine the accuracy of shoe fitting in older people by comparing the dimensions of allocated shoes to foot dimensions obtained with a three-dimensional (3D) scanner. Methods The shoe sizes of 56 older people were determined with the Brannock device®, and weightbearing foot scans were obtained with the FotoScan 3D scanner (Precision 3D Ltd, Weston-super-mare, UK). Participants were provided with a pair of shoes (Dr Comfort®, Vista, CA, USA), available in three width fittings (medium, wide and extra wide). The dimensions (length, ball width and ball girth) of the allocated shoes were documented according to the last measurements provided by the manufacturer. Mean differences between last dimensions and foot dimensions obtained with the 3D scanner were calculated to provide an indication of shoe fitting accuracy. Participants were also asked to report their perception of shoe fit and comfort, using 100 mm visual analogue scales (VAS). Results Shoe size ranged from US size 7 to 14 for men and 5.5 to 11 for women. The allocated shoes were significantly longer than the foot (mean 23.6 mm, 95% confidence interval [CI] 22.1 to 25.2; t55 = 30.3, p < 0.001), however there were no significant differences in relation to ball width (mean 1.4 mm, 95% CI −0.1 to 2.9 mm; t55 = 1.9, p = 0.066) or ball girth (mean −0.7 mm, 95% CI −6.1 to 4.8 mm; t55 = −0.2, p = 0.810). Participants reported favourable perceptions of shoe fit (mean VAS = 90.7 mm, 95% CI 88.4 to 93.1 mm) and comfort (mean VAS = 88.4 mm, 95% CI 85.0 to 91.8 mm). Conclusion Shoe size selection using the Brannock device® resulted in the allocation of shoes with last dimensions that were well matched to the dimensions of the foot. Participants also considered the shoes to be well fitted and comfortable. Older people with disabling foot pain can therefore be dispensed with appropriately-fitted shoes using this technique, provided that the style and materials used are suitable and extra width fittings are available.
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Affiliation(s)
- Hylton B Menz
- Lower Extremity and Gait Studies Program, Faculty of Health Sciences, La Trobe University, Bundoora 3086, VIC, Australia.
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Steele JR, Riddiford-Harland DL, Mickle KJ. Excessive Weight Bearing Compromises Foot Structure and Function Across the Lifespan. THE MECHANOBIOLOGY OF OBESITY AND RELATED DISEASES 2014. [DOI: 10.1007/8415_2014_175] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Fritz B, Schmeltzpfenning T, Plank C, Hein T, Grau S. Anthropometric influences on dynamic foot shape: Measurements of plantar three-dimensional foot deformation. FOOTWEAR SCIENCE 2013. [DOI: 10.1080/19424280.2013.789559] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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30
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Menz HB, Frescos N, Munteanu SE. Effectiveness of off-the-shelf footwear in reducing foot pain in Australian Department of Veterans' Affairs recipients not eligible for medical grade footwear: study protocol for a randomized controlled trial. Trials 2013; 14:106. [PMID: 23782557 PMCID: PMC3663644 DOI: 10.1186/1745-6215-14-106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Accepted: 04/04/2013] [Indexed: 11/30/2022] Open
Abstract
Background Foot pain is highly prevalent in older people, and in many cases is associated with wearing inadequate footwear. In Australia, the Department of Veterans’ Affairs (DVA) covers the costs of medical grade footwear for veterans who have severe foot deformity. However, there is a high demand for footwear by veterans with foot pain who do not meet this eligibility criterion. Therefore, this article describes the design of a randomized controlled trial to evaluate the effectiveness of low cost, off-the-shelf footwear in reducing foot pain in DVA recipients who are currently not eligible for medical grade footwear. Methods One hundred and twenty DVA clients with disabling foot pain residing in Melbourne, Australia, who are not eligible for medical grade footwear will be recruited from the DVA database, and will be randomly allocated to an intervention group or a ‘usual care’ control group. The intervention group will continue to receive their usual DVA-subsidized podiatry care in addition to being provided with low-cost, supportive footwear (Dr Comfort®, Vasyli Medical, Labrador, Queensland, Australia). The control group will also continue to receive DVA-subsidized podiatry care, but will not be provided with the footwear until the completion of the study. The primary outcome measure will be pain subscale on the Foot Health Status Questionnaire (FHSQ), measured at baseline and 4, 8, 12 and 16 weeks. Secondary outcome measures measured at baseline and 16 weeks will include the function subscale of the FHSQ, the Manchester Foot Pain and Disability Index, the number of DVA podiatry treatments required during the study period, general health-related quality of life (using the Short Form 12® Version 2.0), the number of falls experienced during the follow-up period, the Timed Up and Go test, the presence of hyperkeratotic lesions (corns and calluses), the number of participants using co-interventions to relieve foot pain, and participants’ perception of overall treatment effect. Data will be analyzed using the intention-to-treat principle. Discussion This study is the first randomized controlled trial to evaluate the effectiveness of off-the-shelf footwear in reducing foot pain in DVA recipients. The intervention has been pragmatically designed to ensure that the study findings can be implemented into policy and clinical practice if found to be effective. Trial registration Australian New Zealand Clinical Trials Registry: ACTRN12612000322831
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Affiliation(s)
- Hylton B Menz
- Lower Extremity and Gait Studies Program, Faculty of Health Sciences, La Trobe University, Bundoora, Victoria 3086, Australia.
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Gait, balance and plantar pressures in older people with toe deformities. Gait Posture 2011; 34:347-51. [PMID: 21700464 DOI: 10.1016/j.gaitpost.2011.05.023] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2010] [Revised: 03/14/2011] [Accepted: 05/24/2011] [Indexed: 02/02/2023]
Abstract
Older people with toe deformities have been identified as having an increased risk of falling. Little is known, however, about the biomechanical changes that might contribute to this increased risk. Therefore, the purpose of this study was to determine whether older people with hallux valgus and lesser toe deformities displayed different gait, balance and plantar pressure characteristics compared to individuals without toe deformities. The presence of hallux valgus and lesser toe deformities were assessed for 312 community-dwelling older men and women. Spatiotemporal gait parameters were measured using the GAITrite(®) system, postural sway was assessed on two surfaces using a sway-meter and dynamic plantar pressure distribution was measured using an Emed-AT4 pressure plate. The results indicated that, although there were no effects of toe deformities on spatiotemporal gait characteristics or postural sway, older people with hallux valgus (n=36) and lesser toe deformities (n=71) were found to display altered forefoot plantar pressure patterns. These findings suggest that toe deformities alter weight distribution under the foot when walking, but that the relationship between toe deformities and falls may be mediated by factors other than changes in spatiotemporal gait parameters or impaired postural sway.
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