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동의어 포함
Title Page 2
Contents 5
Abstract 10
Chapter 1. INTRODUCTION 12
1. Importance of research 12
2. Purpose of research 16
3. Hypothesis 17
Chapter 2. LITERATURE REVIEW 19
1. Chronic ankle instability 19
2. Sensorimotor dysfunction 20
3. Postural control impairments 21
4. Sensory organization strategies 23
5. Sensory dependence in CAI 24
6. Center of pressure parameters for postural control assessment 25
Chapter 3. METHOD 27
1. Study design 27
2. Participants 29
3. Test procedure 30
3.1. Sensory feedback manipulation for sensory organization in CAI 33
3.2. Visual disrupt by stroboscopic goggles 33
3.3. Somatosensory disrupt by Airex foam pad 35
4. Data processing 36
4.1. Center of pressure (COP)-based parameters 36
4.2. Percent change score of COP parameters 36
5. Statistical analysis 38
Chapter 4. RESULTS 39
1. Participant demographics 39
2. Sensory organization in response to normal to disrupted visual feedback 41
3. Sensory organization in response to normal to disrupted somatosensory feedback 44
4. Sensory organization in response to normal to disrupted bi-sensory feedback 44
Chapter 5. DISCUSSION 49
1. Sensory organization in response to normal to disrupted visual feedback 49
2. Sensory organization in response to normal to disrupted somatosensory feedback 51
3. Sensory organization in response to normal to disrupted bi-sensory feedback 53
4. Clinical implication 55
5. Limitations and recommendations for future studies 57
Chapter 6. CONCLUSION 58
References 59
Appendices 71
〈Appendix 1〉 Operational definition 71
〈Appendix 2〉 Health Questionnaire 76
〈Appendix 3〉 Cumberland Ankle Instability Tool 83
〈Appendix 4〉 Foot and Ankle Ability Measure 84
〈Appendix 5〉 Center of pressure (COP) measures taken during single-leg stance for 10 seconds under different levels of sensory conditions 86
〈Appendix 6〉 Balance reduction as % change in total area 87
〈Appendix 7〉 Balance reduction as % change in total velocity 88
〈Appendix 8〉 Balance reduction as % change in velocity-ML 89
〈Appendix 9〉 Balance reduction as % change in velocity-AP 90
논문요약 91
Figure 1. General representation of the postural control system 22
Figure 2. Flowchart of study design 28
Figure 3. Single-leg balance tests under different levels of sensory conditions 32
Figure 4. Stroboscopic goggles (A. Opaque and clear view, B. 8 levels of visual disruption) 34
Figure 5. Airex Balance foam pad (A. Solid-foam pad, B. Cloud-foam pad) 35
Figure 6. Center-of-pressure trajectory measured using a force plate.... 37
Figure 7. Group-by-sensory disruption level interaction in postural control decline under visual... 43
Figure 8. Group differences in % change in postural control decline under somatosensory... 46
Figure 9. Group differences in % change in postural control decline under bi-sensory disruption... 48
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