Progress Seminar 2015.12.31 이준녕

연구 진행 상황 보고서 재활의학과 응급의학과 Bepatch/CPF 2주전 계획 연구 결과 문제점 및 대책 목표 및 계획 ABT 논문 진행 PCB 제작+납땜+펌웨어 통합 알고리즘 개발 - 연구 결과 ABT 논문 통계 연구 Introduction 100% Methods 100% Results 100% Discussion 50% PCB 제작 2차 LCD 펌웨어 제작 Chemical sensor 작동 확인 문제점 및 대책 목표 및 계획 PCB Ver2 납땜 펌웨어 확인

재활의학과: ABT

ABT 문제점 Could not get a statistically significant result on the correlation between sEMG and ABT when the ABT belt was tightened Correlation: 0.5933 Correlation: 0.6561

Fisher’s r-to-z transform Compare Z scores after transformation using Significance @ 5%: z>|1.96|

Wilcoxon Signed Rank Test

ABT 문제점: previous methods sEMG vs. ABT Fisher’s r-to-z transform (group): z=0.8847, not significant Fisher’s r-to-z transform (individual): one subject w/ increase p<0.05, another subject w/ decrease p<0.1, 13 others show no significant change Wilcoxon signed rank test (individual): between 15 set of correlations p=0.1354

Concept: comparing sEMG and ABT may not be viable ABT 문제점: solution Concept: comparing sEMG and ABT may not be viable sEMG also shows poor correlation with torque at times Overall, when ABT is tightened, it reflects torque output very well Torque is the final output of the muscle activity, not sEMG

ABT vs Torque Correlation: 0.4025 Correlation: 0.9556

Wilcoxon Rank Sum Test: between ABT loose and ABT tight ABT vs Torque Wilcoxon Rank Sum Test: between ABT loose and ABT tight p~0.95 Fisher’s r-to-z Transformation: between ABT loose and ABT tight p<0.0005 WOW!

Wilcoxon Rank Sum Test: between sEMG loose and sEMG tight sEMG vs Torque Wilcoxon Rank Sum Test: between sEMG loose and sEMG tight p~1 Fisher’s r-to-z Transformation: between sEMG loose and sEMG tight p<0.001 why? Training effect Correlation: 0.7593 Correlation: 0.8811

Additional figures: Anomalies Subject Correlations Z p value Loose Tight 1 0.842977 0.97312 -1.71486 0.0872 2 0.843128 0.94955 -1.11368   3 0.578596 0.783906 -0.73912 4 0.737429 0.896897 -0.95656 5 0.890504 0.886391 0.03653 6 0.864582 0.989419 -2.44525 0.0146 7 0.621657 0.791912 -0.65261 8 0.906194 0.917735 -0.12844 9 0.857692 0.307523 1.78905 0.0688 10 0.959974 0.951795 0.177836 11 0.960431 0.927314 0.584779 12 0.92427 0.961039 -0.6394 13 0.822279 0.743583 0.384209 14 0.859123 0.86168 -0.01842 15 0.418268 0.457759 -0.09144

Additional figures: Anomalies Drop in ABT while torque and EMG rises Limitation on the device structure

Additional figures: Anomalies As sEMG rises, ABT decreases and vice versa… leads to extremely low correlation