Guidelines for selection of yarn part 2 12.02.14Ravikeerthi Rao
Twist is the primary binding mechanism for spun yarns. The amount and direction of twist influences many yarn and fabric properties. For knitting yarns, less twist is preferred to produce softer yarns and fabrics. Twist also affects strength, elongation, hairiness, torque, and cover factor. Maintaining a consistent twist level within 3.5% CV is important to avoid quality issues. The formation of spirality in knitted fabrics can be reduced through methods like using low-twist yarns, balanced plied yarns, or alternating S-twist and Z-twist yarns in the feeders.
This presentation discusses yarn twist, including its objectives and effects on yarn properties. Twist is inserted into staple fiber yarns to hold fibers together and impart strength and other properties. There are two types of twist: real twist, where one end of yarn is rotated relative to the other; and false twist, where both ends are clamped and twist inserted between. The level of twist impacts yarn strength, absorbency, and wear properties.
Study of loop formation process on 1 x1 v bed rib knitting machineIAEME Publication
The document presents a study on the factors affecting loop length in 1x1 V-bed rib knitting. Experiments were conducted varying yarn input tension, cam setting, and take down load. It was found that cam setting has a greater impact on loop length than take down load, which has a marginal effect. A mathematical model for predicting loop length was developed based on 2D geometry and validated experimentally, with 5% average error at 95% significance.
The document discusses the optimization of autolevellers on drawframes in spinning processes. It describes how autolevellers help maintain consistent count CV% by continuously adjusting the draft to compensate for thickness variations in sliver feed. The document outlines the types of autolevellers, important parameters for quality levelling, calibration procedures, and advantages of autolevellers for obtaining good yarn quality with low thin places and higher process efficiencies.
This PPT are used for textile engineering students, textile technology who takes textile testing courses. the PPt prepared from different books and NPTEL textile engineering web site.
Presentation on forward feed &backward feed of combingKATHAMAHANTY
Combing is a process that improves fiber quality by removing short fibers and impurities. It produces a clean, parallel sliver. There are two types of combing feeds: forward (concurrent) and backward (counter). Forward feed has a higher production rate but lower quality, while backward feed has a lower production rate but higher quality. The document discusses combing process sequences, important terms, noil elimination theories for both feed types, and how feed length and detaching length impact noil percentage. Backward feed results in more combing action and higher quality sliver and noil than forward feed.
1. The document describes the components and operation of a modern comber machine. It has single or double sided heads with 8 or 12 heads respectively.
2. Key components include the nippers, which grip the lap and present it to the combing cylinder. The top comb combs the trailing end of the fringe.
3. The combing cylinder and top comb remove short fibers and impurities, forming the noil, while the detaching rollers separate the combed fringe to form a web.
Fibers are the smallest elements that make up textile materials. Cotton is a natural fiber obtained from cotton plants, which belongs to the genus Gossypium. Cotton can fulfill 42% of global fiber demand and is produced in countries like the USA, China, India, Australia, and others. The blow room is the first processing section, which opens, cleans, blends, and mixes cotton fibers using machines like the bale opener, cleaner, and mixer to remove 40-70% of impurities. Carding further processes the fibers to individualize them and remove neps and short fibers in preparation for spinning. It drafts and orientates the fibers using components like the taker-in, cylinder, flats
Guidelines for selection of yarn part 2 12.02.14Ravikeerthi Rao
Twist is the primary binding mechanism for spun yarns. The amount and direction of twist influences many yarn and fabric properties. For knitting yarns, less twist is preferred to produce softer yarns and fabrics. Twist also affects strength, elongation, hairiness, torque, and cover factor. Maintaining a consistent twist level within 3.5% CV is important to avoid quality issues. The formation of spirality in knitted fabrics can be reduced through methods like using low-twist yarns, balanced plied yarns, or alternating S-twist and Z-twist yarns in the feeders.
This presentation discusses yarn twist, including its objectives and effects on yarn properties. Twist is inserted into staple fiber yarns to hold fibers together and impart strength and other properties. There are two types of twist: real twist, where one end of yarn is rotated relative to the other; and false twist, where both ends are clamped and twist inserted between. The level of twist impacts yarn strength, absorbency, and wear properties.
Study of loop formation process on 1 x1 v bed rib knitting machineIAEME Publication
The document presents a study on the factors affecting loop length in 1x1 V-bed rib knitting. Experiments were conducted varying yarn input tension, cam setting, and take down load. It was found that cam setting has a greater impact on loop length than take down load, which has a marginal effect. A mathematical model for predicting loop length was developed based on 2D geometry and validated experimentally, with 5% average error at 95% significance.
The document discusses the optimization of autolevellers on drawframes in spinning processes. It describes how autolevellers help maintain consistent count CV% by continuously adjusting the draft to compensate for thickness variations in sliver feed. The document outlines the types of autolevellers, important parameters for quality levelling, calibration procedures, and advantages of autolevellers for obtaining good yarn quality with low thin places and higher process efficiencies.
This PPT are used for textile engineering students, textile technology who takes textile testing courses. the PPt prepared from different books and NPTEL textile engineering web site.
Presentation on forward feed &backward feed of combingKATHAMAHANTY
Combing is a process that improves fiber quality by removing short fibers and impurities. It produces a clean, parallel sliver. There are two types of combing feeds: forward (concurrent) and backward (counter). Forward feed has a higher production rate but lower quality, while backward feed has a lower production rate but higher quality. The document discusses combing process sequences, important terms, noil elimination theories for both feed types, and how feed length and detaching length impact noil percentage. Backward feed results in more combing action and higher quality sliver and noil than forward feed.
1. The document describes the components and operation of a modern comber machine. It has single or double sided heads with 8 or 12 heads respectively.
2. Key components include the nippers, which grip the lap and present it to the combing cylinder. The top comb combs the trailing end of the fringe.
3. The combing cylinder and top comb remove short fibers and impurities, forming the noil, while the detaching rollers separate the combed fringe to form a web.
Fibers are the smallest elements that make up textile materials. Cotton is a natural fiber obtained from cotton plants, which belongs to the genus Gossypium. Cotton can fulfill 42% of global fiber demand and is produced in countries like the USA, China, India, Australia, and others. The blow room is the first processing section, which opens, cleans, blends, and mixes cotton fibers using machines like the bale opener, cleaner, and mixer to remove 40-70% of impurities. Carding further processes the fibers to individualize them and remove neps and short fibers in preparation for spinning. It drafts and orientates the fibers using components like the taker-in, cylinder, flats
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
This document is a lab report submitted by six students to their lecturer for a textiles course. It details an experiment conducted to measure yarn count using a reel and electronic balance. The report provides background on yarn count and its importance. It then describes the methodology, which involved wrapping yarn on a reel, measuring the length and weighing the sample. The calculations determined the yarn count to be 30s. The conclusion restates the importance of understanding yarn count in textiles.
C 70 card_machine_brochure_2810-v2_en_original__79023 2aqeel ahmed
The document describes the advantages of the C 70 High-Performance Card. It has the largest active carding area of any card, resulting in the highest production. It features selective trash removal technologies to optimize raw material utilization. The unique Integrated Grinding System ensures consistent sliver quality and increases clothing service life by up to 20%. The modular design allows for quick maintenance and minimal downtimes. It has outstanding energy efficiency at 20% lower consumption than other cards.
1. The document discusses how knitted fabric specifications like GSM, stitch length, and yarn count are related. It provides equations to calculate the yarn count needed to achieve a desired GSM for different fabric types.
2. Key findings are that stitch length increases as GSM decreases, and compact structures with shorter loops have higher GSM than loose structures. Calculated GSM values also varied more from actual GSM for fabrics with knit and tuck loops like pique.
3. Tables show measured GSM values for different fabrics with varying yarn counts and stitch lengths. Equations presented allow selecting the proper yarn count to get a required GSM for fabrics like single jersey,
This document discusses and compares the tensile properties of different textile fibers. It provides definitions for key tensile properties such as elasticity, elastic limit, plasticity, stress, strain, and breaking extension. Data tables show the tensile properties of various natural, regenerated, and synthetic fibers, including their stress-strain curves. The tensile properties of specific fibers like cotton are examined in more detail, with its properties found to correlate with factors like molecular orientation and fiber length.
Opening in blow room means opening into small flocks. Technological operation of opening means the volume of the flock is increased while the number of fibres remains constant
This document discusses different types of stitches and seams. It begins by defining what a stitch is according to British standards. It then describes various stitch properties like length, width, depth, tension and consistency. It classifies stitches into 6 main classes based on their structure and method of interlacing. These include single thread chain stitch, hand stitch, lock stitch, multi thread chain stitch, overlock stitch and covering chain stitch. Each class has various sub-classes that are used for specific purposes. The document also defines seams and classifies them into 4 main types - plain seam, lapped seam, bound seam and flat seam based on their structure and use.
The document discusses protective clothing and textiles used for industrial, military, and safety applications. It describes different types of protective fabrics that provide protection from heat, chemicals, bacteria, electricity, radiation, and ballistic threats. The textiles are designed for light weight, durability, comfort, and various functional properties depending on the intended use and environmental conditions. Future protective clothing aims to improve protection, comfort, compatibility between layers, reduce weight and costs, and integrate multiple functionalities into fewer layers.
This document discusses bursting strength analysis, which tests the strength of fabrics in all directions simultaneously. Bursting strength is more suitable than tensile strength for fabrics without a clear warp/weft structure like knits, lace, and nonwovens. In a bursting strength test, liquid pressure is applied through a rubber diaphragm to bulge and stress a fabric sample in all directions until it bursts. The pressure at rupture is recorded. Proper sample size, clamping, and test speed are important for consistency. Burst strength indicates the lowest extension a fabric can withstand under multidirectional stress like at joints.
The document discusses doubling machinery used at a textile company. It describes two types of doubling machines, including their manufacturers, models, years, and number of machines and cones. It provides the production capacity of 161.20 kg/shift and technical specifications like spindle RPM and traverse length. It also lists the thread per inch counts for different yarn counts. Finally, it gives a brief description of ring doubling where only twist is provided before winding onto cones to clear any doubling defects.
Firefighters suits first appeared in the 1930s and were originally made of asbestos fabric. Today they are made from aluminized materials to reflect high heat from fires. A complete suit provides protection for the head, jacket, pants, gloves, and boots. It consists of three layers - an outer flame retardant layer, middle vapor barrier layer, and inner thermal barrier layer. The suit effectively protects the body from flames for at least 28 seconds while allowing mobility for firefighters.
Shrinkage finishing for cellulosic fabricsRajeev Sharan
The document discusses several techniques for providing shrink proof and durable press finishes to cellulosic fabrics, including ultra high pressure treatment, corona discharge treatment, foam finishing, zero/zero compressive shrinkage finishing, plasma processing, and nano-care finishing. These techniques can reduce shrinkage, improve wrinkle resistance, and increase the durability of finishes through mechanical or chemical means. The finishes provided by these techniques allow for end uses such as activewear, sportswear, uniforms, and home and commercial textiles.
The document discusses different components of a loom and their functions. It asks multiple choice questions about the driving direction of the heald shaft, the type of shed used, and the number of jack levers. Specifically, it asks whether the heald shaft is positively or negatively driven, the type of shed as bottom close, center close, semi-open or open, and if there is a single or double jack lever. The document provides information to answer questions about key parts and mechanisms in a loom.
Production Process of fully fashioned knitwear manufacturing.Muhammad Rahat
Fully fashioning is a method of shaping knitted structure by increasing or decreasing the number of Wales or needles. Fully fashioned knitwear is manufactured through knitting the whole structure.
Formulae for production calculations for terry towelGaurav Garg
This document provides information about terry towels, including their history, parts, classifications, fibers used, and key formulas for reproduction calculations. Specifically, it discusses how terry weaving originated in Turkey and the five main parts of a conventional terry towel. It also outlines different types of terry towels based on weight, production method, and pile structure. The key fibers used in terry towels are cotton and bamboo due to properties like absorbency and strength. Formulas provided calculate important metrics for towel production like loom output, weight, and pile ratio.
Assignment on parameter of different parts of ring frame machine of yarn iiPartho Biswas
The document discusses key parameters of different parts of a ring frame machine. It describes the functions of the apron, drafting system, ring and traveler. Parameters like roller diameter and pressure, apron and cradle lengths, ring diameter and lift, traveler size and number are discussed in detail for different yarn counts. The ideal twist multiplier for different fiber types and end uses is also covered.
The slideshow will be narrative of the testing for fabrics in the crisp and clear fashion. The different types of tests of fabrics along with colorfastness are also explained.
David Edvardsson är Docent vid Umeå Universitet och Associate Professor/Director of research på La Trobe University/Austin Health Clinical School of Nursing, Melbourne, Australia
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
This document is a lab report submitted by six students to their lecturer for a textiles course. It details an experiment conducted to measure yarn count using a reel and electronic balance. The report provides background on yarn count and its importance. It then describes the methodology, which involved wrapping yarn on a reel, measuring the length and weighing the sample. The calculations determined the yarn count to be 30s. The conclusion restates the importance of understanding yarn count in textiles.
C 70 card_machine_brochure_2810-v2_en_original__79023 2aqeel ahmed
The document describes the advantages of the C 70 High-Performance Card. It has the largest active carding area of any card, resulting in the highest production. It features selective trash removal technologies to optimize raw material utilization. The unique Integrated Grinding System ensures consistent sliver quality and increases clothing service life by up to 20%. The modular design allows for quick maintenance and minimal downtimes. It has outstanding energy efficiency at 20% lower consumption than other cards.
1. The document discusses how knitted fabric specifications like GSM, stitch length, and yarn count are related. It provides equations to calculate the yarn count needed to achieve a desired GSM for different fabric types.
2. Key findings are that stitch length increases as GSM decreases, and compact structures with shorter loops have higher GSM than loose structures. Calculated GSM values also varied more from actual GSM for fabrics with knit and tuck loops like pique.
3. Tables show measured GSM values for different fabrics with varying yarn counts and stitch lengths. Equations presented allow selecting the proper yarn count to get a required GSM for fabrics like single jersey,
This document discusses and compares the tensile properties of different textile fibers. It provides definitions for key tensile properties such as elasticity, elastic limit, plasticity, stress, strain, and breaking extension. Data tables show the tensile properties of various natural, regenerated, and synthetic fibers, including their stress-strain curves. The tensile properties of specific fibers like cotton are examined in more detail, with its properties found to correlate with factors like molecular orientation and fiber length.
Opening in blow room means opening into small flocks. Technological operation of opening means the volume of the flock is increased while the number of fibres remains constant
This document discusses different types of stitches and seams. It begins by defining what a stitch is according to British standards. It then describes various stitch properties like length, width, depth, tension and consistency. It classifies stitches into 6 main classes based on their structure and method of interlacing. These include single thread chain stitch, hand stitch, lock stitch, multi thread chain stitch, overlock stitch and covering chain stitch. Each class has various sub-classes that are used for specific purposes. The document also defines seams and classifies them into 4 main types - plain seam, lapped seam, bound seam and flat seam based on their structure and use.
The document discusses protective clothing and textiles used for industrial, military, and safety applications. It describes different types of protective fabrics that provide protection from heat, chemicals, bacteria, electricity, radiation, and ballistic threats. The textiles are designed for light weight, durability, comfort, and various functional properties depending on the intended use and environmental conditions. Future protective clothing aims to improve protection, comfort, compatibility between layers, reduce weight and costs, and integrate multiple functionalities into fewer layers.
This document discusses bursting strength analysis, which tests the strength of fabrics in all directions simultaneously. Bursting strength is more suitable than tensile strength for fabrics without a clear warp/weft structure like knits, lace, and nonwovens. In a bursting strength test, liquid pressure is applied through a rubber diaphragm to bulge and stress a fabric sample in all directions until it bursts. The pressure at rupture is recorded. Proper sample size, clamping, and test speed are important for consistency. Burst strength indicates the lowest extension a fabric can withstand under multidirectional stress like at joints.
The document discusses doubling machinery used at a textile company. It describes two types of doubling machines, including their manufacturers, models, years, and number of machines and cones. It provides the production capacity of 161.20 kg/shift and technical specifications like spindle RPM and traverse length. It also lists the thread per inch counts for different yarn counts. Finally, it gives a brief description of ring doubling where only twist is provided before winding onto cones to clear any doubling defects.
Firefighters suits first appeared in the 1930s and were originally made of asbestos fabric. Today they are made from aluminized materials to reflect high heat from fires. A complete suit provides protection for the head, jacket, pants, gloves, and boots. It consists of three layers - an outer flame retardant layer, middle vapor barrier layer, and inner thermal barrier layer. The suit effectively protects the body from flames for at least 28 seconds while allowing mobility for firefighters.
Shrinkage finishing for cellulosic fabricsRajeev Sharan
The document discusses several techniques for providing shrink proof and durable press finishes to cellulosic fabrics, including ultra high pressure treatment, corona discharge treatment, foam finishing, zero/zero compressive shrinkage finishing, plasma processing, and nano-care finishing. These techniques can reduce shrinkage, improve wrinkle resistance, and increase the durability of finishes through mechanical or chemical means. The finishes provided by these techniques allow for end uses such as activewear, sportswear, uniforms, and home and commercial textiles.
The document discusses different components of a loom and their functions. It asks multiple choice questions about the driving direction of the heald shaft, the type of shed used, and the number of jack levers. Specifically, it asks whether the heald shaft is positively or negatively driven, the type of shed as bottom close, center close, semi-open or open, and if there is a single or double jack lever. The document provides information to answer questions about key parts and mechanisms in a loom.
Production Process of fully fashioned knitwear manufacturing.Muhammad Rahat
Fully fashioning is a method of shaping knitted structure by increasing or decreasing the number of Wales or needles. Fully fashioned knitwear is manufactured through knitting the whole structure.
Formulae for production calculations for terry towelGaurav Garg
This document provides information about terry towels, including their history, parts, classifications, fibers used, and key formulas for reproduction calculations. Specifically, it discusses how terry weaving originated in Turkey and the five main parts of a conventional terry towel. It also outlines different types of terry towels based on weight, production method, and pile structure. The key fibers used in terry towels are cotton and bamboo due to properties like absorbency and strength. Formulas provided calculate important metrics for towel production like loom output, weight, and pile ratio.
Assignment on parameter of different parts of ring frame machine of yarn iiPartho Biswas
The document discusses key parameters of different parts of a ring frame machine. It describes the functions of the apron, drafting system, ring and traveler. Parameters like roller diameter and pressure, apron and cradle lengths, ring diameter and lift, traveler size and number are discussed in detail for different yarn counts. The ideal twist multiplier for different fiber types and end uses is also covered.
The slideshow will be narrative of the testing for fabrics in the crisp and clear fashion. The different types of tests of fabrics along with colorfastness are also explained.
David Edvardsson är Docent vid Umeå Universitet och Associate Professor/Director of research på La Trobe University/Austin Health Clinical School of Nursing, Melbourne, Australia
1) The document discusses diagramming sentences and includes examples of different parts of speech and clauses.
2) Diagrams are provided to illustrate subjects, verbs, objects, modifiers, prepositions, infinitives, gerunds, and different types of clauses.
3) Examples include sentences about eating lunch, walking and singing, liking cats, enjoying playing golf, and clauses connected to verbs and describing nouns.
Anneli Weilands presentation kring hennes fantastiska matematikmaterial för lågstadiet. Tveka inte att höra av dig om du vill arbeta med detta material.
Team Pro förmedlar forskningsbaserad kunskap om team och tillhandahåller konsulttjänster och arbetsmetoder avsedda för utveckling av team, ledningsgrupper och arbetsgrupper.
CEB - hälsoutveckling och engagemang för företagPål Dobrin
Cultivating Emotional Balance är ett forskningsbaserat program med grund i Psykologi, Neurovetenskap och Kontemplativa traditioner som kan användas för att stärka företags hälsoarbete. Programmet leder till ökad motivation, engagemang och förebygger stressrelaterad ohälsa. Den ökade effektiviteten och höjda innovationsförmågan till följd av mer kreativitet är biverkningar som de flesta arbetsgivare kan stå ut med.
Mindfulness och Medkänsla - Winwin för patienter och oss självaWeiYu51
Konferens Hjärtkliniken Capio St. Gorans Sjukhus 2018.
Genom en fallbaserad diskussion fick vi lära oss hur mindfulness kan minska stress, öka välbefinnande och därmed kan minska psykosociala riskfaktorer för hjärtkärlsjukdomar. Hälsoprofessioner kan dessutom få stor nyttan av medkänsla till andra och sig själv för att motverka empatitrötthet och förebygga utbrändhet. Vi får flera praktiska verktyg för bättre samarbete och kommunikation med patienter.
Self-Determination Theory and Person-centred care (PCC)
1. Self-Determination Theory:
Ett smakprov
Magnus Lindwall, fil.dr, docent
Institutionen för Kost och Idrottsvetenskap;
Psykologiska Institutionen
Göteborgs Universitet
Magnus.Lindwall@psy.gu.se
2. Vad finns i svarta boxen?
drivkraft
motivation självreglering
Hur
operationaliserar, Hälsobeteende
fångar och mäter vi rökning, fysisk aktivitet, kost,
det som finns i ta medicin
svarta boxen?
Hälsoutfall
fysiska, psykiska
4. Teorier och modeller av fysisk
aktivitet : Grova kompasser i en
snårig verklighet
Från Biddle & Mutrie, 2008
5. Self-Determination theory
(Deci & Ryan, 1985, 2000) www.psych.rochester.edu/SDT
• Bas i humanistisk och kognitiv psykologi
• Ett centralt begrepp är Inre motivation
”människans naturliga tendens att frivilligt söka
upp utmanande och nya situationer och ägna sig
åt beteenden där man lär sig nya saker och
utvecklas.”
6. SDT: En organismisk teori om
motivation (se t ex Sheldon et al., 2003)
Människan är (pro)aktiv mer än reaktiv, söker
upp och väljer riktning och mål
Människan har en naturlig och pågående
potential att utvecklas i funktion och uttryck
Dialektalt perspektiv, livet är upp och ned,
mellan utmaningar som löses och sedan nya
barriärer, utmaningar skapar utveckling, tes-
antites-syntes
7. Self-Determination theory
(Deci & Ryan, 1985, 2000) www.psych.rochester.edu/SDT
Fokus främst på kvaliteten i motivationen i olika
situationer och hur miljön påverkar motivationen.
Individer har flera motiv, inre och yttre, som är i spel
samtidigt.
Människor som upplever inre och själv-bestämmande
motivation upplever valfrihet och självständighet
Detta naturliga engagemang för aktiviteter kan dock
minska om miljön uppfattas som hindrande och
kontrollerande.
En central fråga: hur tillägnar sig individer motivationen
att ägna sig åt alla de beteenden man gör som inte drivs
av ren inre motivation?
8. När inre motivationen
undermineras
Individer som fick betalt för att lösa ett pussel ägnade sig
mindre åt pusslet spontant sedan jämfört med personer
som inte fick betalt (Deci, 1972).
Replikerats med andra yttre belöningar, som att bli
bekräftad socialt, eller att få mat eller ”snacks”
Vissa situationer/miljöer/betingelser kan underminera
inre motivation, ffa yttre belöning
Stark kontrast mot tidigare behavioristiska perspektiv
Guldstjärnor och bonusar kanske inte det bästa i
längden?
9. Self-Determination Theory
(Deci & Ryan, 1985, 2000) www.psych.rochester.edu/SDT
SDT fokuserar på typ av motivation, inte mängd
motivation, fokus på kvalitet snarare än kvantitet
Skiljer på tre typer av motivation: amotivation, yttre
(extrinsic) och inre motivation
Dessa tre typer befinner sig på ett kontinuum av
kontrollerande vs. autonoma (självbestämmande) motiv
10. En mer självbestämmande
motivation hänger ihop med:
Mer ansträngning
Ökad flexibilitet och kreativitet
Ökat intresse och tillfredställelse
Bättre psykisk och fysisk hälsa
Högre kvalitet gällande nära relationer
11. Psykologiska behov i SDT
Centrala psykologiska behov i SDT:
(a) Kompetens, (individens tendens att vilja påverka (ha en
effekt på) omkringliggande miljön och därmed uppnå vissa önskade
utfall)
(b) Autonomi/frivillighet (upplevelsen att man själv fritt kan
välja vad man vill ägna sig åt och att det finns valmöjligheter)
(c) Social tillhörighet (behovet att känna en koppling och
social närhet till andra, alltså att man bryr sig om andra och att
andra bryr sig om en själv, dock betyder INTE att man samtidigt kan
uppleva autonomi, självständighet och oberoende!
Hur väl vi lyckas tillfredsställa dessa behov
viktigt för motivationen. Situationer eller
beteenden som erbjuder individen möjligheten
att tillfredsställa dessa behov kommer öka
sannolikheten för självbestämmande och inre
motivation
13. SDT i ett nötskal
(Sheldon et al., 2003)
Har en humanistisk orientering understött av rigorös
kvantitativ forskning och design
Gör positiva antaganden om människans natur och
egenskaper, men undersöker vad som ändå leder till
negativa utfall, t ex brist på motivation
Antar att människan, för att växa och frodas, måste få
tillfredställelse av de tre psykologiska behoven
kompetens, autonomi och till/samhörighet
Fokuserar på personer kamp för att känna mer
självägande (dvs att de ”äger” sina beteenden) kopplat
till beteende (t ex kopplat till hälsa och vård)
Förklarar hur praktiker på bästa sätt kan motivera
klienter så att de internaliserar beteenden och kan
självreglera dem bättre
14. SDT i ett hälsokontext
(Ng et al., 2012, Perspectives on Psychological Science)
• Meta-analys av 184 oberoende studier av SDT i
hälsovård
• Test av path-analys baserat på korrelationer
från meta-analys
15. SDT i ett hälsokontext
(Ng et al., 2012, Perspectives on Psychological Science)
• En mer autonomistödjande miljö i hälsovård
predicerar större tillfredställelse av behov
• Tillfredställelse av behoven, och en
självbestämmande (autonom) reglering
predicerade viktiga patientutfall, t ex psykisk
hälsa och högre nivåer av hälsobeteenden
(rökning, fysisk aktivitet, ta medicin)
16. Take-home message
(Ng et al. 2012)
”Together, SDT constructs predicted important outcomes
across the biopsychosocial continuum in systems theory
(Engels, 1977), from higher levels of personal well-being to
markers of physiological and molecular health, including better
glycemic control for patients with diabetes, healthier
cholesterol, and lower levels of exposure to carcinogens in
smoke. These findings indicate that promoting patients´
autonomy, which is now considered a critical health care
outcome in its own right, also promotes better mental and
physical health.”
(Ng et al., 2012, pp.335-336)
17. Hur kan SDT hjälpa till att stärka följsamhet
av medicinering och öka livskvalitet hos
patienter med diabetes
(Williams et al., 2009, The Diabetes EDUCATOR)
Baserat på data från ca 2000 patienter med diabetes
20. Motivational interviewing
(Miller & Rollnick, 1991)
Motivation att förändra beteende utgår
från klienten
Det är klientens uppgift att lyfta och lösa
ambivalens inför beteendet
Direkt övertalning ej effektivt
Beredskap att förändras dynamiskt och ej
statiskt personlighetsdrag
Passiv partner att bolla med snarare än
auktoritär expert
21. Att mäta SDT
The Behavioural Regulation in Exercise
Questionnaire (Markland & Tobin, 2004; BREQ-2)
- 19 påståenden, mäter typ av självreglering
kopplat specifikt till träning
The Health Care Climate Questionnaire (Williams,
Grow et al., 1996; HCCQ)
– 15 påståenden, mäter upplevt autonomistöd
22. Hur sker beteendeförändring?
Motiverande samtal och SDT
Markland, Ryan, Tobin, & Rollnick, (2005). Motivational interviewing and self-
determination theory. J Soc Clin Psychol, 24, 811-831)
23. Självbestämmande i kliniken
Sheldon, K. M., Williams, G. C., Joiner, T. (2003). Self-determination theory
in the clinic: Motivating physical and mental health. New Haven, CT: Yale
University Press.
24. SDT och MI:
Länkar till PCC
Acknowleding the internal frame of
reference of the client/patient
Non-judgemental and supportive
Provide information that is responsive to
patients´s need
Empasizing autonomy, while at the same
time promote patients taking responsibility
for behaviour and action
Deci & Ryan (2012). Self-determination in health care and its relations to
motivational interviewing: a few comments. Int J Beh Nutr Phys Act, 9:24
25. SDT och PCC
Stipulationerna i SDT går hand i hand med grundsynen i PCC (i.e.
personalism), bland annat genom att personens subjektiva upplevelser är
centrala (jfr. person narrative), att vi betraktar personen som en aktiv,
tänkande och kapabel resurs (jfr. homo capax) och att vi uppmuntrar
delaktighet i planering, diskussioner, problemlösning och
beslutsfattande (jfr. working partnership).
PCC kännetecknas av relationer (i motsats till individperspektivet) vilket
motsvaras av”autonomy support” i SDT, dvs omgivningens betydelse för
självbestämmande och välbefinnande. Autonomibegreppet är i SDT inte
individbaserat utan kopplas till relationen person-miljö och kan även förstås
utifrån volition och interest från PCC.
Ett annat begrepp som är nära relaterat både till PCC och SDT (ffa till
autonomy support) är empowerment.
Eftersom vi kan mäta SDT-relaterade komponenter (e.g. självbestämmande
och behovsuppfyllnad) skulle detta kanske även kunna fungera som
kompletterande mått på personcentrering som utfallsvariabel.
27. Lästips fysisk aktivitet och SDT
Hagger, M. S., & Chatzisarantis, N. L. (2007). Intrinsic motivation
and self-determination in exercise and sport. Champaigne, IL:
Human Kinetics.
Hagger, M. S., & Chatzisarantis, N. L.(2008). Self-determination
theory and the psychology of exercise. International Review of Sport
and Exercise Psychology, 1, 79-103.
Josefsson, K., & Lindwall, M. (2010). Motivation till motion och fysisk
aktivitet. I L. Hallberg (Red.), Hälsa & Livsstil – forskning och
praktiska tillämpningar. (s. 207-225). Lund: Studentlitteratur.
Lindgren, S. (2011). Motivation och målsättningar för motion: Ett
självbestämmande perspektiv. I M. Lindwall & U. Johnson (Red.),
Svensk idrottspsykologisk Förenings Årsbok 2011, (s. 56-73).
Stockholm: Andrén & Holm.
Josefsson, K., & Ivarsson, A. (2011). Motivation till motion och
utveckling av webbaserad hälsopromotion. I M. Lindwall & U.
Johnson (red.), Svensk idrottspsykologisk Förenings Årsbok 2011,
(s. 74-90). Stockholm: Andrén & Holm.