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1
Content available A biomechanical assessment of running with hallux unstable shoes of different material stiffness
Mei Qichang, Gu Yaodong, Fernandes Justin
Acta of Bioengineering and Biomechanics
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2019
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Vol. 21, no. 1
121--128
EN
Functional footwear with different unstable profiles has been widely used to mimic barefoot condition and offload plantar loading for pathological or injury prevention. However, little research investigates the effect of unstable structure on particular foot functions. In this study, a prototype of unstable shoe design with unstable element of different stiffness placed at the hallux (a regionalized rocker) was used. The primary objective was to analyse the biomechanical performance of running with hallux unstable shoes, aiming to potentially stimulate and increase the toe gripping function. Methods: The lower limb kinematics and plantar pressure distribution were measured to comparatively analyse the soft (SS) and hard (SH) unstable shoes with flat control shoes (CS). Results: The SS showed increased big toe and reduced forefoot plantar pressure. The SS led to similar lower limb kinematics to baseline CS except for reduced hip abduction, increased rotation range of motion (ROM), increased peak ankle plantar flexion and ROM. The SH presented significantly altered lower limb kinematics across hip, knee and ankle, and laterally distributed plantar pressure. Conclusions: Unstable shoes with soft material led to reduced medial metatarsal loading by increasing the support area and modified joint kinematics minimally. Unstable shoes with stiffer material presented compensatory kinematic movements across all joints and laterally shifted plantar loading distribution. These findings may provide implications on toe grip function training for foot pressure off-loading.
2
Content available The Optimization of the system "price – quality" in shoes
Popovych N., Bednarchuk M.
Technologia i Jakość Wyrobów
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2016
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R. 61
95--97
EN
Elaborated a questionnaire, conducted organoleptic evaluation of quality shoes, which sold on the one of the largest in Western Ukraine shopping centers. On the basis of these researchs done Rankings respective store LLC “AJPIE-L”.
3
Content available The influence of high- and low-heeled shoes on balance in young women
Mika A., Oleksy Ł., Kielnar R., Świerczek M.
Acta of Bioengineering and Biomechanics
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2016
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Vol. 18, no. 3
97--103
EN
Purpose: To evaluate the influence of two different heel heights on static balance and on limits of stability during functional reach test, with both the eyes open and eyes closed, in young women (age 22–27) who did not wear heeled shoes habitually. Methods: Thirtyone young women (age 22–27) performed balance tests on a stabilometric platform without footwear and in shoes with 4 cm and 10 cm heels. The center of pressure (COP) deviations range and velocity in anteroposterior (AP) and mediolateral (ML) directions were assessed. The limits of stability were measured when the subject leaned the body in sagittal plane. Results: The ranges of COP deviations in AP and ML directions were already significantly higher in 4 cm heels in comparison to the barefoot condition. COP deviation velocity significantly raised with increasing heel height as well as when the eyes were closed. Conclusions: A more pronounced increase of COP deviation velocity than COP deviation range when measurement conditions become more difficult may indicate that young women anticipate postural corrections by stimulation of ankle proprioception when heeled shoes are worn. High-heeled shoes may lead to alterations in velocity feedback balance mechanism, which may increase the risk of musculoskeletal injuries. Observed in our study adverse effect of heeled footwear on balance may predispose women to falls and injuries. Permanent use of stiletto high heels should be avoided by women.
4
Content available Projektowanie środków ochrony indywidualnej z wykorzystaniem inżynierii odwrotnej
Hrynyk R., Frydrych I., Cichocka A.
Bezpieczeństwo Pracy : nauka i praktyka
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2015
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nr 12
24-26
PL
W artykule przedstawiono koncepcję zastosowania skanerów w inżynierii odwrotnej do projektowania i konstrukcji środków ochrony indywidualnej wymagających ścisłego dopasowania do osobnika, w tym przypadku butów oraz masek i półmasek. Przedstawiono modele stóp i twarzy, z których do tej pory korzystano oraz metodologię postępowania z użyciem opisywanych skanerów.
EN
This article presents the idea of using scanners m reverse engineering for constructing personal protective equipment that requires a precise fit to the person, in this case for shoes and masks and half-masks. It presents models of feet and faces, which have been used so far, and the methodology of designing with the use of scanners.
5
Buty, torby, dodatki, akcesoria...
Ibek T.
Przegląd Włókienniczy - Włókno, Odzież, Skóra
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2007
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nr 6
24-26
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