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Jamshaid H, Mishra RK, Ahamad N, Chandan V, Nadeem M, Kolář V, Jirků P, Müller M, Akshat T, Nazari S, Alexiou Ivanova T. Impact of construction parameters on ergonomic and thermo-physiological comfort performance of knitted occupational compression stocking materials. Heliyon 2024; 10:e26704. [PMID: 38434044 PMCID: PMC10906411 DOI: 10.1016/j.heliyon.2024.e26704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 02/18/2024] [Accepted: 02/19/2024] [Indexed: 03/05/2024] Open
Abstract
This work investigates the effect of varying the knitting structure and stitch length (SL) on various thermo-physiological and ergonomic comfort properties of the occupational graduated compression socks. Thermo-physiological comfort, ergonomic comfort and dimensional stability of theses stockings were analysed in a comparative manner. Obtained results were evaluated statistically using the technique of analysis of variance (ANOVA). A Fisher's multiple comparison test was commissioned to analyze the relationship between the alteration of stitch length (SL) on various utility functions and properties desired in the occupational compression socks. In order to examine whether the difference of stitch length is significant, p values were determined. Further the influence of knitting structures e.g., plain, 2 × 2 Rib and 1 × 3 Rib was analysed on the selected properties. The interactive effect of both stitch length (SL) and knitting structure was studied using statistical techniques. It was concluded that knitting structure has a stronger impact on thermo-physiological and ergonomic comfort properties. Results showed a significant variation in thermo-physiological and ergonomic comfort by altering stitch length by means of the statistical analysis. An innovative approach for the manufacturers has been developed for optimizing performance in compression stockings. The construction of the compression socks can thus be optimized in terms of constructional parameters to provide optimum comfort to the users.
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Affiliation(s)
- Hafsa Jamshaid
- School of Engg. & Technology, National Textile University, Sheikhupura Road, Faisalabad, 37610, Pakistan
| | - Rajesh Kumar Mishra
- Department of Materials Sci. & Manufacturing Tech., Faculty of Engg., Czech University of Life Sciences Prague, Suchdol, Prague, 16500, Czech Republic
| | - Naseer Ahamad
- School of Appl. Sciences, National Textile University, Sheikhupura Road, Faisalabad, 37610, Pakistan
| | - Vijay Chandan
- Department of Materials Sci. & Manufacturing Tech., Faculty of Engg., Czech University of Life Sciences Prague, Suchdol, Prague, 16500, Czech Republic
| | - Muhammad Nadeem
- School of Engg. & Technology, National Textile University, Sheikhupura Road, Faisalabad, 37610, Pakistan
| | - Viktor Kolář
- Department of Materials Sci. & Manufacturing Tech., Faculty of Engg., Czech University of Life Sciences Prague, Suchdol, Prague, 16500, Czech Republic
| | - Petr Jirků
- Department of Materials Sci. & Manufacturing Tech., Faculty of Engg., Czech University of Life Sciences Prague, Suchdol, Prague, 16500, Czech Republic
| | - Miroslav Müller
- Department of Materials Sci. & Manufacturing Tech., Faculty of Engg., Czech University of Life Sciences Prague, Suchdol, Prague, 16500, Czech Republic
| | - Tegginamath Akshat
- Department of Machine Design and Mech. Faculty of Mech. Engg., Technical University of Liberec, Liberec, 46117, Czech Republic
| | - Shabnam Nazari
- Department of Sustainable Tech., Faculty of Tropical Agri-Sci., Czech University of Life Sciences Prague, Suchdol, Prague, 16500, Czech Republic
| | - Tatiana Alexiou Ivanova
- Department of Sustainable Tech., Faculty of Tropical Agri-Sci., Czech University of Life Sciences Prague, Suchdol, Prague, 16500, Czech Republic
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Shi Y, Ye C, Liu R. A novel optimization approach for bio-design of therapeutic compression stockings with pressure fit. Comput Biol Med 2024; 168:107768. [PMID: 38056207 DOI: 10.1016/j.compbiomed.2023.107768] [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: 08/22/2023] [Revised: 10/24/2023] [Accepted: 11/26/2023] [Indexed: 12/08/2023]
Abstract
For physical-based compression therapeutic modalities, especially compression stockings (CSs), their pressure performances are necessarily evaluated by the standardized cylinder leg mannequins before biological applications. However, the insufficient pressure supply caused by morphological shape diversities between circular leg mannequins and irregular bio-bodies limits the clinical effectiveness and user compliance of CSs. Therefore, an operable and efficiency approach for optimization bio-design and digital development of CSs with enhanced compression performances needs to be proposed. The present study has adopted three-dimensional (3D) body scanning and reverse engineering technologies for lower limb cross-sectional geometric characterization and morphological classification. The irregularity of biological leg circumferential slices was determined and clustered as four levels relating to individual curvature variations. Sequentially, a new pressure prediction model was constructed through characterized geometric variations for bio-based bodies, then its acceptability was validated with good agreement by wearing trials (mean prediction accuracy was 2.53 ± 0.52 mmHg). Thus, the digital pressure reshaped development guidance was obtained based on the classified irregular levels and established pressure prediction models. Consequently, this study provides a novel reliable optimization bio-design solution for manufacturing of therapeutic compression textiles and facilitates the medical efficacy and precision of compression therapy in practical use.
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Affiliation(s)
- Yu Shi
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong Special Administrative Region (SAR); Laboratory for Artificial Intelligence in Design, Hong Kong Science Park, New Territories, Hong Kong Special Administrative Region (SAR)
| | - Chongyang Ye
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong Special Administrative Region (SAR)
| | - Rong Liu
- School of Fashion and Textiles, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong Special Administrative Region (SAR); Laboratory for Artificial Intelligence in Design, Hong Kong Science Park, New Territories, Hong Kong Special Administrative Region (SAR).
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Shank Circumference Reduction by Sleep Compression Stockings in University Students and Convenience Store Cashiers. Healthcare (Basel) 2022; 10:healthcare10081532. [PMID: 36011189 PMCID: PMC9407786 DOI: 10.3390/healthcare10081532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
Compression stockings (CSs) are a relatively simple and effective tool for alleviating varicose veins and are often used as a preventive measure among workers whose jobs require prolonged standing. Nevertheless, the efficacy of CSs that are advertised as sleepwear remains unverified. This study recruited 10 female university students and 10 cashiers as participants to test the effects of sleep CSs. During the experiment, the changes in shank circumference (SC) and the subjective discomfort rating upon getting up and going to bed were collected. Data were recorded immediately after getting up and SC measurement was repeated 10 min later. The results demonstrated that both CS condition and measurement time significantly affected SC reduction, whereas cashier or student status did not. The reported discomfort and tightness of the legs attributed to CSs were relatively high, and the benefit toward SC reduction was minimal. Cashiers exhibited slightly larger SC values and higher perceived discomfort levels, which may be attributed to their occupational characteristic of prolonged standing, and the cumulative effect of prolonged standing on muscle properties warrants further study. The study findings suggest that wearing CSs for sleep may not be effective for reducing OE
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Magalhães FA, Fonseca ST, Araújo VL, Trede RG, Oliveira LM, Castor CGME, Pinto RZ, Souza TR. Midfoot passive stiffness affects foot and ankle kinematics and kinetics during the propulsive phase of walking. J Biomech 2021; 119:110328. [PMID: 33611052 DOI: 10.1016/j.jbiomech.2021.110328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 12/11/2020] [Accepted: 02/07/2021] [Indexed: 11/18/2022]
Abstract
The midfoot joint complex (MFJC) is related to the mechanics and efficiency of the walking propulsive phase and low midfoot passive stiffness may require compensatory foot and ankle joint moments to avoid excessive pronation and inefficient propulsion. This study aimed to investigate the kinematics and kinetics of the MFJC and ankle during the propulsive phase of walking in subjects with larger and smaller midfoot passive stiffness. MFJC passive stiffness of 20 healthy adult participants, and the kinematics and kinetics of the MFJC (forefoot-rearfoot) and ankle (rearfoot-shank) during the stance phase of walking were measured. The participants were divided equally into two groups according to the MFJC passive stiffness. Ranges of motion (ROM) and mean joint moments were computed for the late stance. Independent t-tests (α = 0.05) revealed that subjects with lower midfoot passive stiffness showed an increased MFJC sagittal ROM (flattened longitudinal arch) (p = 0.002), increased ankle frontal ROM (more everted positions) (p = 0.002), increased MFJC frontal ROM (more inverted positions) (p = 0.019), as well as a tendency for larger ankle sagittal ROM (p = 0.056). They also showed increased MFJC (p = 0.021) and ankle (p = 0.018) moments in the sagittal plane, increased MFJC moment in the frontal plane (p = 0.047) and a tendency for a predominant ankle moment in the frontal (p = 0.058). Foot and ankle joint moments are possible strategies to reduce pronation and improve propulsion, but not sufficient to prevent the altered kinematics related to low midfoot stiffness. Therefore, midfoot passive stiffness is critical for foot and ankle kinematics and kinetics during walking propulsive phase and is a potential target of interventions.
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Affiliation(s)
- Fabrício Anicio Magalhães
- Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Graduate Program in Rehabilitation Sciences; Belo Horizonte, Minas Gerais, Brazil
| | - Sérgio Teixeira Fonseca
- Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Graduate Program in Rehabilitation Sciences; Belo Horizonte, Minas Gerais, Brazil
| | - Vanessa Lara Araújo
- Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Graduate Program in Rehabilitation Sciences; Belo Horizonte, Minas Gerais, Brazil
| | - Renato Guilherme Trede
- Universidade Federal dos Vales do Jequitinhonha e Mucuri, Department of Physical Therapy, Graduate Program in Rehabilitation and Functional Performance, Diamantina, Minas Gerais, Brazil
| | - Lílian Marques Oliveira
- Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Graduate Program in Rehabilitation Sciences; Belo Horizonte, Minas Gerais, Brazil
| | - Camila Gomes Miranda E Castor
- Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Graduate Program in Rehabilitation Sciences; Belo Horizonte, Minas Gerais, Brazil
| | - Rafael Zambelli Pinto
- Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Graduate Program in Rehabilitation Sciences; Belo Horizonte, Minas Gerais, Brazil
| | - Thales Rezende Souza
- Universidade Federal de Minas Gerais, School of Physical Education, Physical Therapy and Occupational Therapy, Graduate Program in Rehabilitation Sciences; Belo Horizonte, Minas Gerais, Brazil.
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