14 research outputs found
ν΄λ μ΄μ ν€ν μ°μ μ μ κΈ°μ μΈλ ₯μ μ΄μ©ν νμ΄λλ‘μ € μ μ λ° μ νμ±μ κ΄ν μ°κ΅¬
νμλ
Όλ¬Έ (μμ¬)-- μμΈλνκ΅ λνμ : μ¬λ£κ³΅νλΆ, 2012. 8. λ¨κΈ°ν.νμ΄λλ‘μ €μ μΉμμ± κ³ λΆμλ‘ μ΄λ£¨μ΄μ§ 3μ°¨μ ꡬ쑰μ λ¬Όλ‘ κ΅¬μ±λμ΄μμΌλ©°, κ³ μ²΄μ μ‘체μ νΉμ±μ λͺ¨λ κ°λ κ²μΌλ‘ μλ €μ Έ μλ€. μ΄λ¬ν μ €μ μνμ©νμμλΆν° μλ£μ© μ¬λ£ λ± λ€μν μμμμ μμ© κ°λ₯νλ€. μΉμμ± κ³ λΆμλ₯Ό μ΄μ©νμ¬ λ§λ νμ΄λλ‘μ €μ κΈ°κ³μ κ°λκ° μ½νκ±°λ μΈλΆμκ·Ήμ λ°μνκΈ° μ΄λ ΅λ€. μ΄λ¬ν μ μ 극볡νκΈ° μν΄ 3μ°¨μ ꡬ쑰체μ λ€λ₯Έ λ¬Όμ§μ λμ
νμ¬ νμ΄λλ‘μ €μ κΈ°κ³μ κ°λλ₯Ό λμ΄κ±°λ, μΈλΆ μκ·Ήμ λ°μν μ μλ λ¬Όμ§μ λμ
νμ¬ νμ΄λλ‘μ €μ κΈ°λ₯μ λΆμ¬νκΈ°λ νλ€.
λ³Έ μ°κ΅¬μμλ μμ©μ‘μμμ μ½λ‘μ΄λ ννλ‘ μ‘΄μ¬νλ ν΄λ μ΄ μ
μμ ν€ν μ°μ λμ
νμ¬ κΈ°κ³μ μ±μ§μ΄ μ°μν νμ΄λλ‘μ €μ μ μνμλ€. ν΄λ μ΄ μ
μλ λ¬Όμ λΆμ°λμ΄ μμ μ νλ₯Ό κ°μ§λ©°, ν€ν μ°μ pHκ° 6μ΄νμΈ μ°μ± μμ©μ‘μμ μμ μ νλ₯Ό κ°λλ€. λ°λΌμ λ μ ν μ¬μ΄μ μνΈμμ©μ μν΄ 3μ°¨μ κ΅¬μ‘°κ° νμ±λλ©΄μ νμ΄λλ‘μ €μ΄ λ§λ€μ΄μ§λ€.
ν΄λ μ΄ λλκ° 3.0% (w/v)μ΄μμΈ κ²½μ°, λ¬Όμ λΆμ°μν¨ ν 1~2μκ° μ΄λ΄μ μ λκ° μ¦κ°νλ©° μ €μ΄ λλλ°, μ½ν νμ κ°νλ©΄ κ·Έ ννλ₯Ό μ μ§νμ§ λͺ»νκ³ μ©μ‘κ³Ό κ°μ ννλ‘ λ³νκ² λλ€. κ·Έλ¬λ ν΄λ μ΄ λλ 2.5% μ΄μμΈ κ²½μ°, ν€ν μ°μ λ£μ μ§ν λλ μ λΆ μ΄λ΄μ μ €μ΄ λλ κ²μ νμΈνμλ€.
κΈ°κ³μ μ±μ§μ΄ μ°μν λ¨λ¨ν ν΄λ μ΄-ν€ν μ° νμ΄λλ‘μ €μ λ§λ€κΈ° μν μ΅μ μ λΉμ¨μ΄ μ‘΄μ¬ν¨μ νμΈνμλ€. 첨κ°νλ ν€ν μ°μ μμ΄ μ μ κ²½μ°, 3μ°¨μ ꡬ쑰λ₯Ό νμ±νμ§ λͺ»νλ©°, λ무 λ§μ μμ ν€ν μ°μ 첨κ°νμμ κ²½μ° 3μ°¨μ ꡬ쑰λ₯Ό μ μ§νμ§ λͺ»νκ³ ν΄λ μ΄μ ν€ν μ°μ΄ μμ§ ν μΉ¨μ νκ² λλ€. λν ν΄λ μ΄ μ
μλ₯Ό μ λΆμ°μν€κΈ° μν΄ μ²¨κ°νλ PAASμ μμ΄ λ무 λ§μ κ²½μ°μλ νμ΄λλ‘μ €μ νμ±νμ§ λͺ»νκ³ ν΄λ μ΄ λΆμ°μ‘ λ΄λΆμ ν€ν μ° λ°©μΈμ μ»κ² λλ€.
μ νμ± μΈ‘μ μ ν΅ν΄ μ μν νμ΄λλ‘μ €μ κΈ°κ³μ κ°λλ₯Ό μΈ‘μ νμλ€. νμ΄λλ‘μ €μ΄ νμ±λλ ν€ν μ° λ²μμμ, 첨κ°νλ ν€ν μ°μ μμ΄ μ¦κ°ν μλ‘ νμ΄λλ‘μ €μ κ°λκ° μ¦κ°ν¨μ μ μ μμλ€. κ·Έλ¦¬κ³ PAASκ° μ²¨κ°λ κ²½μ° νμ΄λλ‘μ €μ κ°λκ° λμμ‘μΌλ κ·Έ ν¨κ³Όκ° ν¬μ§ μκ³ , ν΄λ μ΄μ λλκ° μ¦κ°ν μλ‘ κ°λκ° μ¦κ°ν¨μ νμΈνμλ€. λν ν€ν μ° μ¬μ¬ κΈΈμ΄κ° 짧μμλ‘ μ €μ κ°λκ° λμμΌλ©°, ν€ν μ° ννμ λ°λ₯Έ κ°λλ ν° μ°¨μ΄κ° μμμ νμΈνμλ€. 첨κ°νλ ν€ν μ° λΆμ°μ‘μ pHλ₯Ό λ³ννμ¬ μ μ ν μΈ‘μ ν κ²°κ³Ό pHκ°μ΄ λμ ν€ν μ° λΆμ°μ‘μ μ΄μ©ν νμ΄λλ‘μ €μ κ°λκ° μ½ν¨μ μ μ μμλ€.
ν΄λ μ΄μ ν€ν μ°μ κ°μ§κ³ λ¨λ¨ν νμ΄λλ‘μ €μ λ§λ€μμΌλ©°, ν€ν μ°μ μμ νκ° λ§μμλ‘ λ λ¨λ¨ν νμ΄λλ‘μ €μ μ»μ μ μμκ³ , ν€ν μ° μ¬μ¬μ μ νμ μμ΄ μ μ κ²½μ° μ €μ΄ λμ§ μμμ νμΈνμλ€. μ΄λ₯Ό ν΅ν΄ ν΄λ μ΄-ν€ν μ° νμ΄λλ‘μ €μ μ μ κΈ°μ μνΈμμ©μ μν΄ 3μ°¨μ ꡬ쑰λ₯Ό νμ±νμ¬ νμ΄λλ‘μ €μ΄ λ¨μ μ μ μλ€. λ°λΌμ λ¨λ¨ν νμ΄λλ‘μ €μ μ»κΈ° μν΄ μ΅μ μ λΉμ¨μ΄ μ‘΄μ¬νκ² λλ€. λ³Έ μ°κ΅¬μμλ νμ΄λλ‘μ €μ κΈ°κ³μ κ°λλ₯Ό ν₯μμν΄κ³Ό λμμ λλ
Έμ
μ λλ λ°ν
리μλ₯Ό μ½κ² μ € λ΄λΆμ λμ
ν μ μλ κ²μ ν΅ν΄, νμ΄λλ‘μ €μ λΆκ°μ μΈ κΈ°λ₯μ λΆμ¬ν μ μλ κ°λ₯μ±μ νμΈνμλ€.Hydrogels are wet and soft matters consist of three dimensional network structure and high water content. Hydrogels have been applied to various fields such as household items, biomaterials, drug delivery and tissue engineering and so on. But polymer hydrogels have limitations with respect to mechanical and stimuli-responsive properties. Thus, in order to overcome the shortcomings, inorganic materials are introduced to polymer hydrogels and the hybrid hydrogels are prepared.
In this work, the hybrid hydrogel is fabricated by mixing clay and chitosan and improved to mechanical property. Clay, synthetic hectorite, has negative charges on its surface and positive charges on its edge when dispersed in deionized water. And the other component, chitosan, is dissolved in acid aqueous media under pH 6, and amine groups in chitosan chain protonated. Formation of clay-chitosan hybrid hydrogel is initiated through electrostatic interaction between the surface of clay and the amine groups of chitosan. To identify the role of chitosan in the gel formation, systematically we varied the concentration and observe the gel forming capability. And to examine improved mechanical property of clay-chitosan hydrogels, the shear modulus values Gβ² and Gβ³ are measured clay-chitosan hydrogels which contained all three components or except for one component and also measured depending on chain length and type of chitosan. According to the experiments, we discovered that charge balance is the most important factor to obtain the robust hybrid gels with high modulus. Furthermore, the resulting gel can be moldable and the other materials such as nanoparticles or cell can be easily incorporated inside gel.Chapter 1. Introduction
1.1. What is a gel? 1
1.2. Chitosan hydrogels prepared by physical cross-linking 4
1.3. Hybrid hydrogels 6
1.4. Biopolymer: chitin and chitosan 9
1.5. Clay minerals: Laponite 16
1.6. Polymer induced flocculation 18
Chapter 2. Methods
2.1. Purification of chitosan 20
2.2. Hydrolysis of beta chitosan 20
2.3. Preparation of hydrogels 21
2.4. Hydrogels incorporated nanoparticles and bacteria 21
2.5. Laponite-chitosan droplets 22
2.6. Fabrication of micro-sized laponite-chitosan sphere 22
2.7. Characterization: FT-IR, ARES 23
Chapter 3. Results and Discussion
3.1. Preparation of clay-chitosan hybrid hydrogels 24
3.2. Gelation depending on the amount of each component 32
3.3. Fabrication of micro-sized laponite-chitosan sphere 36
3.4. Rheological measurements 40
3.5. FT-IR measurement 48
Chapter 4. Conclusion 52
Bibliography 54
Abstract in Korean 61Maste
Effects of a Yoga Program for Improving the Sense of Coherence of Dementia Caregivers
νμλ
Όλ¬Έ (λ°μ¬)-- μμΈλνκ΅ λνμ : κ°νΈνκ³Ό κ°νΈν μ 곡, 2016. 2. κ³ μ§κ°.μΉλ§€νμ μκ° μ¦κ°νκ³ μ λ³κΈ°κ°μ΄ κΈΈμ΄μ§λ©΄μ μΉλ§€νμλ₯Ό μ£Όλ‘ λ보λ κ°μ‘±κ΅¬μ±μμΈ μΉλ§€νμ μ£ΌλΆμμμ λΆμλΆλ΄μ΄ μ μ°¨ κ°μ€λκ³ μλ€. μ£ΌλΆμμμ μ 체μ μ μ μ 건κ°μ΄ μ
νλλ©΄ νμ λΆμμ΄ μνν΄μ§ μ μλ μνμ΄ μμ΄ μ μλ ₯μ λμ΄κΈ° μν΄ μ£ΌλΆμμμ ν΅ν©μ±μ ν₯μμν¬ νμκ° μλ€. μ£ΌλΆμμμ ν΅ν©μ±μ΄ ν₯μλλ©΄ μΉλ§€νμ κ°νΈμ κΈμ μ μΈ λ§μμ κ°μ Έ νμλΆμμ μ’μ κ²°κ³Όλ₯Ό λ³μ μ μμ΄ ν΅ν©μ± ν₯μμ μν κ°νΈμ€μ¬ κ°λ°μ΄ νμνλ€. μκ°λ μ£ΌλΆμμμ μ μ μ 건κ°μ ν₯μνλλ° λμμ μ£Όλ κ²μΌλ‘ λ³΄κ³ λμμΌλ μ 체μ μ§νμ ν¨κ» μ΅μ’
μ μΌλ‘ ν΅ν©μ±μ ν₯μμν€λμ§λ μμ§ μ°κ΅¬λ λ° μλ€. μ΄μ λ³Έ μ°κ΅¬λ λ‘μ΄μ μ μμ΄λ‘ μ λ°λΌ μκ°νλ‘κ·Έλ¨μ΄ ν΅ν©μ±μ λ―ΈμΉλ ν¨κ³Όλ₯Ό νμ
νκ³ μ νμλ€.
μ μ¬μ€νμ°κ΅¬λ‘ λΉλλ±μ± μ ν λμ‘°κ΅° μ€κ³λ‘ μ§ννμλ€. 60μΈ μ΄μ μ£ΌλΆμμ 36λͺ
μ κ° 18λͺ
μ© μ€νκ΅°κ³Ό λμ‘°κ΅°μΌλ‘ νΈμ λ°°μ νμλ€. μ€νκ΅°μκ² 8μ£Όλμ μκ°νλ‘κ·Έλ¨μ 1μ£ΌμΌμ 1νμ©, 1νμ 90λΆκ° μ§ννμκ³ λμ‘°κ΅°μκ²λ νΉλ³ν νλ‘κ·Έλ¨μ μ 곡νμ§ μμλ€. μ€μ¬ ν¨κ³Όλ₯Ό νμΈνκΈ° μν΄ μ 체μ¦μ, νΌλ‘, 체λ ₯, μ°μΈ, λΆμλΆλ΄, ν΅ν©μ±μ νλ‘κ·Έλ¨ μ νμ μΈ‘μ νμλ€. λ κ΅°μ΄ λμ§νμ§ μμ 곡λ³λλΆμ(ANCOVA)μΌλ‘ ν¨κ³Όλ₯Ό λΆμνμλ€.
μ°κ΅¬κ²°κ³Ό λμ‘°κ΅°μ λΉν΄ μ€νκ΅°μ μ 체μ¦μ(p<.001)κ³Ό νΌλ‘(p<.001)κ° κ°μνμλ€. 체λ ₯μμλ μμμμ μΌμ΄μ°λ€ μκΈ°(p=.031), μλ Ήλ€κΈ°(p=.009), 2λΆ μ μ리걷기(p=.021), μμμμ μμ μμΌλ‘ κ΅½νκΈ°(p=.039), λ± λ€λ‘ μμ‘κΈ°(p=.065), 240 cm μ볡걷기(p=.254)μμ λͺ¨λ μ¦κ°νμλ€. μ°μΈ(p<.001)κ³Ό λΆμλΆλ΄(p<.001)μ΄ κ°μνμκ³ μ΅μ’
μ μΌλ‘ ν΅ν©μ±(p<.001)μ΄ μ¦κ°νμλ€.
κ²°λ‘ μ μΌλ‘ μκ°νλ‘κ·Έλ¨μ μΉλ§€νμ μ£ΌλΆμμμ μ 체μ λΆνΈκ°κ³Ό μ μ μ κ³ ν΅μ κ°μμμΌ μ΅μ’
μ μΌλ‘ ν΅ν©μ±μ ν₯μμμΌ°λ€. μΉλ§€νμ μ£ΌλΆμμμ μΆμ ν₯μμν€λ κ°νΈμ€μ¬λ‘ μκ°νλ‘κ·Έλ¨μ΄ μ μ ν¨μ νμΈνμλ€.β
. μλ‘ 1
1. μ°κ΅¬μ νμμ± 1
2. μ°κ΅¬μ λͺ©μ 5
3. μ©μ΄μ μ μ 6
β
‘. λ¬Ένκ³ μ°° 10
1. μΉλ§€νμ μ£ΌλΆμμμ λΆμλΆλ΄κ³Ό 건κ°μν 10
2. μκ°μ ν¨κ³Ό 15
3. μκ°μ κ°νΈνμ μ μ© 23
β
’. μ΄λ‘ μ λ°°κ²½ 28
1. μ΄λ‘ μ κΈ°ν 28
2. μ°κ΅¬μ κ°μ€ 34
β
£. μ°κ΅¬λ°©λ² 35
1. μ°κ΅¬μ€κ³ 35
2. μ°κ΅¬λμ 36
3. μ°κ΅¬νκ²½ 37
4. μ€λ¦¬μ κ³ λ € 37
5. μ€μ¬ νλ‘κ·Έλ¨ 38
6. μ°κ΅¬λꡬ 50
1) κ²°κ³Όλ³μ 50
2) μΈμλ³μ 59
7. μλ£μμ§ 61
8. μλ£λΆμ 66
β
€. μ°κ΅¬κ²°κ³Ό 67
1. μ°κ΅¬λμμμ μ¬μ λμ§μ± κ²μ 67
2. κ°μ€κ²μ 76
β
₯. λ
Όμ 84
1. μΉλ§€νμ μ£ΌλΆμμλ₯Ό μν μκ°νλ‘κ·Έλ¨μ ν¨κ³Ό 84
2. μ°κ΅¬μ μμμ μ νμ 99
β
¦. κ²°λ‘ λ° μ μΈ 102
μ°Έκ³ λ¬Έν 104
λΆ λ‘ 122
Appendix 1. μ°κ΅¬λμμ μ€λͺ
λ¬Έ λ° λμμ 122
Appendix 2. μ€λ¬Έμ§ 128
Appendix 3. μ°κ΅¬μ§νμ¬μ§ 140
Appendix 4. 24κ°μ§ μκ°μμΈ 142
Appendix 5. λꡬμ¬μ© νλ½ μ΄λ©μΌ 147
Appendix 6. μλͺ
μ€λ¦¬μ¬μμμν μ¬μκ²°κ³Ό ν΅λ³΄μ 148
Abstract 149Docto
The Effect of Yoga Program on the Stress in Professionals
νμλ
Όλ¬Έ (μμ¬)-- μμΈλνκ΅ λνμ : κ°νΈνκ³Ό, 2012. 2. μ΄μΈμ.λμμμ΄ λ³ννλ νκ΅ μ¬νμ μ μνλ κ³Όμ μμ μκΈ°λ μ€νΈλ μ€λ νλμΈμ λ§μ± μ§νμ μΌμΌν€λ μ£Όμ μμΈμΌλ‘ μ§λͺ©λκ³ μλ€. νΉν μ λ¬Έμ§ μ’
μ¬μλ μ§μκ³Ό λ¬Ένλ₯Ό μ°½μ‘°νκ³ μ λ¬νλ μΌμ μ£Όλ‘ νλ μ§μ
κ΅°μΌλ‘ μ¬λ¦¬μ μ€νΈλ μ€κ° λλ€. μ€νΈλ μ€λ μ§κ°νλ μ λμ λ°λΌ κ°μΈλ§λ€ λ€λ₯΄κΈ° λλ¬Έμ μ ν©ν λμ² μμμΌλ‘ μ€νΈλ μ€λ₯Ό μ΄μμμΌ μ§λ³μΌλ‘ νλλλ κ²μ μλ°©νκ³ μ νλ λ
Έλ ₯μ΄ μ΄μ΄μ‘λ€. μκ° νλ‘κ·Έλ¨μ μκ° λμ, νΈν‘, λͺ
μμΌλ‘ μ΄λ£¨μ΄μ Έ μ λ¬Έμ§ μ’
μ¬μμ μ€νΈλ μ€ μ΄μμ μ ν©νλ€. λ³Έ μ°κ΅¬λ μκ° νλ‘κ·Έλ¨μ΄ μ λ¬Έμ§ μ’
μ¬μμ μ§κ°λ μ€νΈλ μ€, μ€νΈλ μ€ λ°μ, μ¬λ°λ³μ΄λμ μ μ©ν μ€μ¬μΈμ§λ₯Ό νμ
νκΈ° μν΄ μλνμλ€.
λ³Έ μ°κ΅¬λ λΉλλ±μ± λμ‘°κ΅° μ ν μ€ν μ€κ³λ‘ μ€νκ΅°μ 23λͺ
, λμ‘°κ΅°μ 24λͺ
μ΄μλ€. μκ° νλ‘κ·Έλ¨μ 2011λ
7μ 4μΌλΆν° 8μ 31μΌμ κ±Έμ³ λ§€ν 50λΆ, μ£Ό 2νμ©, 8μ£Όκ° 16νλ₯Ό μννμλ€. μκ° νλ‘κ·Έλ¨μ μκ° μ§λμ κ΅μ‘κ³Όμ μ μ΄μν μ°κ΅¬μκ° μΈλΆ λ΄μ©μ κ°λ°νμλ€. 1νμ μκ° νλ‘κ·Έλ¨μ 4λ¨κ³λ‘ λͺ
μ, μκ° λμ, νΈν‘, λͺ
μμΌλ‘ μ΄μ΄μ§λλ‘ κ³ μλμλ€. μκ° νλ‘κ·Έλ¨μ ν¨κ³Όλ μ§κ°λ μ€νΈλ μ€ μ²λ(Perceived Stress Scale), μ€νΈλ μ€ λ°μ μ²λ(Stress Response Inventory), μ¬λ°λ³μ΄λλ₯Ό μ΄μ©νμ¬ μ€νΈλ μ€μ μ¬λ¦¬μ , μ리μ μ λλ₯Ό μΈ‘μ νμλ€. μ립λ μλ£λ SPSS 18.0μ μ΄μ©νμ¬ λΆμνμλ€.
μ£Ό 2ν 8μ£Όκ° μκ° νλ‘κ·Έλ¨μ μ 곡νμμ λ, μ λ¬Έμ§ μ’
μ¬μμ μ€νΈλ μ€ λ°μμ ν΅κ³μ μΌλ‘ μ μνκ² κ°μνμμΌλ, μ§κ°λ μ€νΈλ μ€μ μ¬λ°λ³μ΄λλ ν΅κ³μ μΌλ‘ μ μν μ°¨μ΄κ° μμλ€. μκ° νλ‘κ·Έλ¨μ μ λ¬Έμ§ μ’
μ¬μμ μ€νΈλ μ€ λ°μμ μ§μ μ μΈ ν¨κ³Όλ₯Ό 보μμΌλ μ€νΈλ μ€λ₯Ό μ§κ°νλ μ λμ μμ¨μ κ²½κ³λ₯Ό κ°μ νμ§λ λͺ»νμλ€. κ·Έλ¬λ λμμ μ€ μ€νΈλ μ€κ° λμ κ΅°μ μ λ³νμμ λλ μ§κ°λ μ€νΈλ μ€, μ€νΈλ μ€ λ°μ, μ¬λ°λ³μ΄λκ° ν΅κ³μ μΌλ‘ μ μνκ² κ°μνμλ€.
μκ° νλ‘κ·Έλ¨μ μ λ¬Έμ§ μ’
μ¬μμ μ€νΈλ μ€ λ°μμ μνμν€λλ°μ μ©ν μ μλ μ€μ¬μ΄λ, μ€μ¬ κ°λλ₯Ό μ£Ό 150λΆ μ΄μ, 8μ£Ό μ΄μμΌλ‘ νμ₯ν λ°λ³΅ μ°κ΅¬κ° νμνκ³ , μ§κ°λ μ€νΈλ μ€μ μ리μ λ°μμ μ°κ΄μ±μ λ―Όκ°ν λ°μν μ μλ μ리μ λꡬ κ°λ°μ΄ νμνλ€. μ λ¬Έμ§ μ’
μ¬μμ μ§κ°λ μ€νΈλ μ€ μ²λμ μμμ κΈ°μ€μ λ§λ ¨νλ μ°κ΅¬κ° μꡬλλ€.Professionals have psychological stress with rapid growth environment in present-day society. They are affiliated with very stressful group in Korea. Living a stressful life has many effects on the body including chronic ill-health, and systemic illness. We can prevent chronic stress response and disease through the use of better coping. Yoga program that consist of yoga posture, yoga breathing and meditation is suitable for professionals who want to relieve stress. Therefore, the purpose of this study was to examine the effects of yoga program on perceived stress scale, stress response inventory and heart rate variability in professionals. Yoga program in this study consisted of sixteenth 50-minute-sessions, including yoga practice, yoga breathing, meditation designed by the investigator.
The design used is the quasi-experimental intervention study. The subjects were 47 adults with professional jobs. They were divide into two groups : an experimental group of 23 adults and a control group of 24 adults.
The period for the yoga program is eight weeks from July 4th to August 30th. Data collection was performed through a physical measurement and two questionnaires. The questionnaire was designed to measured perceived stress, stress response scale. To analyze the data, descriptive statistics, ΟΒ² test, independent t-test, Mann-Whitney U test for homogeneity, Mann-Whitney U test and Wilcoxon signal rank test for hypothesis examination, and Cronbachs Ξ± coefficient test were applied using SPSS version 18.0 for Windows software.
There were significant decreases in the stress response scale of professionals after eight weeks of yoga program. No significant changes in perceived stress and heart rate variability were revealed between the experimental group and the control group. But there were significant decreases in perceived stress, stress response scale, heart rate variability of some participants who stress levels were high.
The results from this study suggested that eight-week period of yoga program can decrease stress response of the professionals, while it might not reduce their perceived stress and heart rate variability. To clarify the effects of yoga program in professionals, intervention strength (such as, longer periods and frequency) and physiological measurement are necessary. And it is necessary to do research for standard criteria of perceived stress in professionals.Maste
A Study on the Development Process and Changes of the Outdoor Clothing Advertising Market
The Effect of a Yoga Program on the Stress Levels of Professionals
Purpose: The aim of this study was to examine the effects of a yoga program on perceived stress, stress response and heart rate variability in professionals. Methods: The research design was a quasi-experimental intervention study. The participants were 47 adults with professional jobs consisting of an experimental group with 23 adults and a control group with 24 adults. The duration of the yoga program was eight weeks from July 4 to August 30, 2012. Results: There were significant decreases in the stress response score after the yoga program. No significant changes in perceived stress and heart rate variability were observed between the experimental group and control group. However, there were significant decreases in perceived stress, stress response scale, and heart rate variability for some participants whose stress levels were high. Conclusion: An eight-week-long yoga program could be considered as an intervention to decrease the stress response of professionals even though it might not reduce their perceived stress and heart rate variability. To further analyze the effects of a yoga program in professionals, changes in intervention strength (such as longer periods and frequency) and the development of physiological measures, which would show the co-relationship between perceived stress and physiological response, are necessary in future studies