Development of a flexible wearable thermal textile accessory for winter sports

2021 ◽  
pp. 004051752110018
Author(s):  
Chenxiao Yang ◽  
Mei Yu Yao ◽  
Li LI

In pursuit of a healthy lifestyle, people are paying more attention to sports activities, even in winter. They are thus seeking high function and maximum comfort to improve their performance. However, cold weather may result in a higher risk of injuries. It is of prime importance to perform warm-up, which can increase body temperature to relieve muscle stiffness and allow improvement of performance. Unfortunately, the traditional approach of wearing multiple thick layers of clothing to keep warm can prevent the easy movement of the body. Therefore, the integration of flexible textile and wearable thermal technology has become a major research initiative in both sports and textile fields. Current attempts by high-tech start-ups and wearable textile enterprises are not able to overcome the hurdle of transforming wearable technology into a fashionable and marketable product. Hence, this paper introduces a design-driven method to develop a flexible wearable thermal textile accessory for winter sports usage. The relationships between thermal textiles, electrical resistance, thermal performance, stretchability, energy consumption, and function stability were evaluated to optimize the thermal textile fabrication. Then, a prototype was produced and its specification was defined. These enable the realization of mass production and provide a blueprint for the future development of wearable textiles.

Arsitektura ◽  
2020 ◽  
Vol 18 (2) ◽  
pp. 291
Author(s):  
Rabudin Rizki ◽  
Gun Faisal ◽  
Yohannes Firzal

<p class="6Abstrak"><span lang="EN-US">Pekanbaru is a developing capital city that can be seen from the density of community activities in their daily lives. This requires having a fit and healthy body. A fit and healthy lifestyle is also an important requirement for the body. Fitness and good body beauty is the dream of every human being. Lack of fitness in the body will make you weak and less enthusiastic in carrying out your daily routine. From this problem, we need a place that accommodates fitness activities and physical and spiritual health of the body. Generally, Fitness and Wellness facilities in Pekanbaru are still located in shophouses, residences, shopping centers and part of the supporting facilities for star-rated hotels. Therefore a Fitness and Wellness Center is needed that expresses fitness and health by supporting various physical and physical and spiritual activities that have never existed before by presenting aesthetics, technology and building a supporting structure. For that, we need a high-tech architectural principles approach that exposes a structure that is not only load-bearing but also aesthetically pleasing to this building.</span></p>


2021 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Deny Nusyirwan ◽  
Rohani Siagiaan ◽  
Prasetya Perwira Putra Perdana

<p><strong><em>Abstract.</em></strong> <em>Indonesia is an archipelago that has a tropical climate with rainy and summer seasons. In addition to an attractive area with biodiversity, the tropical climate is also able to be a special attraction for foreign tourists. Riau Islands Province, located at the forefront of the Indonesian State bordering neighboring Malaysia and Singapore, has become an attraction for tourists and trade industry players. The number of people has increased along with the increase in the economy as an attraction to occupy an area. With the increase in population activity in an area, in addition to maintaining a clean lifestyle, a healthy lifestyle is also needed to keep the body healthy. From the results of observations, the general public drying clothes in places directly exposed to sunlight, this is intended so that clothes can dry quickly. But problems will arise if there is sudden rain, where the owner of the clothes is not at home or is not aware of rain, then the clothes will be moist or even wet. Sheet clothing is not recommended for use because it can cause skin irritation and reduce endurance because body temperature decreases will eventually be vulnerable to disease. With this background, a technological innovation is proposed in the form of an automatic clothesline. Innovation is the integration of Arduino microcontroller technology, rainwater sensor and light sensor. The sensor will provide input for the microcontroller which will then provide an output to the DC motor. The research process begins with a social approach by conducting activities with potential users of innovation, which are integrated with an approach with design thinking to be able to produce technology-based innovations that benefit prospective users. After getting the main solution, it will proceed with making a simple prototype that will be used to test the functions and benefits with potential users. From the results of testing with potential users, obtained satisfactory results in terms of ease of use of technology, the benefits of innovation and function in prototypes.</em></p><br /><p><strong><em> </em></strong></p><p><strong>Abstrak.</strong> Indonesia adalah sebuah Negara kepulauan yang memilki iklim tropis dengan musim hujan dan musim panas. Selain daerahnya yang menarik dengan keanaekaragaman hayati, iklim tropis tersebut juga mampu menjadi daya tarik tersendiri untuk wisatawan mancanegara. Provinsi Kepulauan Riau, terletak di garis terdepan Negara Indonesia yang berbatasan dengan Negara tetangga Malaysia dan Singapore telah  menjadi daya tarik wisatawan dan pelaku industri perdagangan. Jumlah manusia menjadi meningkat seiring dengan peningkatan perekonomian sebagai daya tarik untuk menempati suatu daerah. Dengan meningkatnya aktifitas penduduk di suatu daerah maka selain menjaga pola hidup bersih, pola hidup sehat juga diperlukan untuk menjaga tubuh tetap sehat. Dari hasil observasi, masyarakat pada umumnya menjemur pakaian di tempat yang langsung terkena sinar matahari, ini dimaksudkan agar pakaian dapat segera kering. Namun permasalahan akan timbul apabila terjadi hujan mendadak, dimana pemilik pakaian sedang tidak berada di rumah ataupun tidak menyadari hujan, maka pakaian akan lembab atau bahkan basah. Pakaian yang lembar sangat tidak dianjurkan untuk digunakan karena dapat menimbulkan iritasi kulit dan menurunkan daya tahan tubuh karena suhu tubuh menurun pada ahirnya akan rentan terhadap penyakit. Dengan latar belakang tersebut maka di usulkan sebuah inovasi  teknologi berupa sebuah purwarupa jemuran pakaian otomatis. Inovasi merupakan integrasi teknologi mikrokontroler arduino nano, sensor air hujan dan sensor LDR. Sensor akan memberikan <em>input</em> untuk mikrokontroller yang selanjutnya akan memberikan luaran ke motor DC. Proses penelitian dimulai dengan pendekatan secara sosial dengan melakukan aktivitas bersama calon pengguna inovasi, yang di integrasikan dengan  pendekatan dengan <em>design thinking</em> untuk dapat menghasilkan inovasi berbasis teknologi yang bermanfaat bagi calon pengguna. Setelah mendapatkan solusi utama, maka akan dilanjutkan dengan pembuatan purwarupa sederhana yang akan dipergunakan untuk uji fungsi dan manfaat bersama calon pengguna. Dari hasil pengujian bersama calon pengguna, didapatkan hasil memuaskan dari segi kemudahan menggunakan teknologi, manfaat inovasi dan fungsi pada purwarupa.</p><p> </p>


2020 ◽  
Vol 27 (3) ◽  
pp. 201-209
Author(s):  
Syed Saqib Ali ◽  
Mohammad Khalid Zia ◽  
Tooba Siddiqui ◽  
Haseeb Ahsan ◽  
Fahim Halim Khan

Background: Ascorbic acid is a classic dietary antioxidant which plays an important role in the body of human beings. It is commonly found in various foods as well as taken as dietary supplement. Objective: The plasma ascorbic acid concentration may range from low, as in chronic or acute oxidative stress to high if delivered intravenously during cancer treatment. Sheep alpha-2- macroglobulin (α2M), a human α2M homologue is a large tetrameric glycoprotein of 630 kDa with antiproteinase activity, found in sheep’s blood. Methods: In the present study, the interaction of ascorbic acid with alpha-2-macroglobulin was explored in the presence of visible light by utilizing various spectroscopic techniques and isothermal titration calorimetry (ITC). Results: UV-vis and fluorescence spectroscopy suggests the formation of a complex between ascorbic acid and α2M apparent by increased absorbance and decreased fluorescence. Secondary structural changes in the α2M were investigated by CD and FT-IR spectroscopy. Our findings suggest the induction of subtle conformational changes in α2M induced by ascorbic acid. Thermodynamics signatures of ascorbic acid and α2M interaction indicate that the binding is an enthalpy-driven process. Conclusion: It is possible that ascorbic acid binds and compromises antiproteinase activity of α2M by inducing changes in the secondary structure of the protein.


Author(s):  
Steven N. Dworkin

This book describes the linguistic structures that constitute Medieval or Old Spanish as preserved in texts written prior to the beginning of the sixteenth century. It emphasizes those structures that contrast with the modern standard language. Chapter 1 presents methodological issues raised by the study of a language preserved only in written sources. Chapter 2 examines questions involved in reconstructing the sound system of Old Spanish before discussing relevant phonetic and phonological details. The chapter ends with an overview of Old Spanish spelling practices. Chapter 3 presents in some detail the nominal, verbal, and pronominal morphology of the language, with attention to regional variants. Chapter 4 describes selected syntactic structures, with emphasis on the noun phrase, verb phrase, object pronoun placement, subject-verb-object word order, verb tense, aspect, and mood. Chapter 5 begins with an extensive list of Old Spanish nouns, adjectives, verbs, and function words that have not survived into the modern standard language. It then presents examples of coexisting variants (doublets) and changes of meaning, and finishes with an overview of the creation of neologisms in the medieval language through derivational morphology (prefixation, suffixation, compounding). The book concludes with an anthology composed of three extracts from Spanish prose texts, one each from the thirteenth, fourteenth, and fifteenth centuries. The extracts contain footnotes that highlight relevant morphological, syntactic, and lexical features, with cross references to the relevant sections in the body of the book.


2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Shanta Pandian ◽  
Kamal Narayan Arya ◽  
Dharmendra Kumar

Background. Balance and functional abilities are controlled by both sides of the body. The role of nonparetic side has never been explored for such skills.Objective. The objective of the present study was to examine the effect of a motor therapy program primarily involving the nonparetic side on balance and function in chronic stroke.Method. A randomized controlled, double blinded trial was conducted on 39 poststroke hemiparetic subjects (21, men; mean age, 42 years; mean poststroke duration, 13 months). They were randomly divided into the experimental group(n=20)and control group(n=19). The participants received either motor therapy focusing on the nonparetic side along with the conventional program or conventional program alone for 8 weeks (3 session/week, 60 minutes each). The balance ability was assessed using Berg Balance Scale (BBS) and Functional Reach Test (FRT) while the functional performance was measured by Barthel Index (BI).Result. After intervention, the experimental group exhibited significant(P<0.05)change on BBS (5.65 versus 2.52) and BI (12.75 versus 2.16) scores in comparison to the control group.Conclusion. The motor therapy program incorporating the nonparetic side along with the affected side was found to be effective in enhancing balance and function in stroke.


Author(s):  
Greg Quinn

There are many theoretical models that attempt to accurately and consistently link kinematic and kinetic information to musculoskeletal pain and deformity of the foot. Biomechanical theory of the foot lacks a consensual model: clinicians are enticed to draw from numerous paradigms, each having different levels of supportive evidence and contrasting methods of evaluation, in order to engage in clinical deduction and treatment planning. Contriving to find a link between form and function lies at the heart of most of these competing theories and the physical nature of the discipline has prompted an engineering approach. Physics is of great importance in biology and helps us to model the forces that the foot has to deal with in order for it to work effectively. However, the tissues of the body have complex processes that are in place to protect them and they are variable between individuals. Research is uncovering why these differences exist and how these processes are governed. The emerging explanations for adaptability of foot structure and musculoskeletal homeostasis offer new insights on how clinical variation in outcomes and treatment effects might arise. These biological processes underlie how variation in the performance and utilisation of common traits, even within apparently similar sub-groups, make anatomical distinction less meaningful and are likely to undermine the justification of a 'foot type'. Furthermore, mechanobiology introduces a probabilistic element to morphology based on genetic and epigenetic factors.


2021 ◽  
Vol 25 (1) ◽  
pp. 30-37
Author(s):  
Sarah Klopp Christensen ◽  
Aaron Wayne Johnson ◽  
Natalie Van Wagoner ◽  
Taryn E. Corey ◽  
Matthew S. McClung ◽  
...  

Irish dance has evolved in aesthetics that lead to greater physical demands on dancers' bodies. Irish dancers must land from difficult moves without letting their knees bend or heels touch the ground, causing large forces to be absorbed by the body. The majority of injuries incurred by Irish dancers are due to overuse (79.6%). The purpose of this study was to determine loads on the body of female Irish dancers, including peak force, rise rate of force, and impulse, in eight common Irish hard shoe and soft shoe dance movements. It was hypothesized that these movements would produce different ground reac- tion force (GRF) characteristics. Sixteen female Irish dancers were recruited from the three highest competitive levels. Each performed a warm-up, reviewed the eight movements, and then performed each movement three times on a force plate, four in soft shoes and four in hard shoes. Ground reaction forces were measured using a three-dimensional force plate recording at 1,000 Hz. Peak force, rise rate, and vertical impulse were calculated. Peak forces normalized by each dancer's body weight for each of these variables were significantly different between move- ments and shoe types [F(15, 15)= 65.4, p < 0.01; F(15, 15) = 65.0, p < 0.01; and F(15, 15) = 67.4, p < 0.01, respectively]. The variable years of experience was not correlated with peak force, rise rate, or impulse (p > 0.40). It is concluded that there was a large range in GRF characteristics among the eight movements studied. Understanding the force of each dance step will allow instructors to develop training routines that help dancers adapt gradually to the high forces experienced in Irish dance training and competitions, thereby limiting the potential for overuse injuries.


2016 ◽  
Vol 12 (5) ◽  
pp. 24
Author(s):  
Majed F. Mujalli ◽  
Maen Z. Zakarneh ◽  
Ala’a Kh. Abu Aloyoun

<p>The aim of the study was to investigate the common sports injuries among physical activities practitioners at the physical fitness centers in Jordan. Study sample consisted of (272) volunteered male (n=221) and female (n=51) (age 30±3). Researchers used a special form used to evaluate athletic injuries. After collecting and analyzing the data. Results showed that the most common sports injuries among sample of the study was muscular tears 27.7%, muscle spasm 20.7%, and tears ligament 20.2%. And the most exposed parts of the body to injury is the lumbar area 26.8%, elbows 16.9%, followed by shoulders 8.9%. Also the study results revealed that the most cusses of injuries was over training 24.14%. Poor warm-up 22.1% and bad technic 11.3%. Bodies-building was the most type of activities subjects to injury with 18.8%. Physical Fitness 6.6% and weight loss 27.7. Results also showed that physical therapy was the most means of treating injuries 54.14%, drugs therapy 33.3% and surgical intervention 4.2%. Also the study shows that males are more exposed to injuries than females.</p><p>Conclusions: These finding indicate that sports injures is part of physical</p><p>Activities participations, preventive measures should be taken by participant's the researchers recommended the need for physical and medical checkup before participation in physical activity at the physical fitness centers.</p>


1999 ◽  
Vol 82 (3) ◽  
pp. 1622-1626 ◽  
Author(s):  
Pietro G. Morasso ◽  
Marco Schieppati

A stiffness control model for the stabilization of sway has been proposed recently. This paper discusses two inadequacies of the model: modeling and empiric consistency. First, we show that the in-phase relation between the trajectories of the center of pressure and the center of mass is determined by physics, not by control patterns. Second, we show that physiological values of stiffness of the ankle muscles are insufficient to stabilize the body “inverted pendulum.” The evidence of active mechanisms of sway stabilization is reviewed, pointing out the potentially crucial role of foot skin and muscle receptors.


1998 ◽  
Vol 28 (3) ◽  
pp. 655-663 ◽  
Author(s):  
P. NOPOULOS ◽  
M. FLAUM ◽  
S. ARNDT ◽  
N. ANDREASEN

Background. Morphometry, the measurement of forms, is an ancient practice. In particular, schizophrenic somatology was popular early in this century, but has been essentially absent from the literature for over 30 years. More recently, evidence has grown to support the notion that aberrant neurodevelopment may play a role in the pathophysiology of schizophrenia. Is the body, like the brain, affected by abnormal development in these patients?Methods. To evaluate global deficit in development and its relationship to pre-morbid function, height was compared in a large group (N=226) of male schizophrenics and a group of healthy male controls (N=142) equivalent in parental socio-economic status. Patients in the lower quartile of height were compared to those in the upper quartile of height.Results. The patient group had a mean height of 177·1 cm, which was significantly shorter than the mean height of the control group of 179·4 (P<0·003). Those in the lower quartile had significantly poorer pre-morbid function as measured by: (1) psychosocial adjustment using the pre-morbid adjustment scales for childhood and adolescence/young adulthood, and (2) cognitive function using measures of school performance such as grades and need for special education. In addition, these measures of pre-morbid function correlated significantly with height when analysed using the entire sample.Conclusions. These findings provide further support to the idea that abnormal development may play a key role in the pathophysiology of schizophrenia. Furthermore, this is manifested as a global deficit in growth and function resulting in smaller stature, poorer social skills, and deficits in cognitive abilities.


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