njit-etd2003-081 - New Jersey Institute of Technology
njit-etd2003-081 - New Jersey Institute of Technology njit-etd2003-081 - New Jersey Institute of Technology
211 Figure5.51 LF partial coherence of COPD (1-47) and normal (48-55) subjects. Figure 5.52 HF partial coherence of COPD (1-47) and normal (48-55) subjects.
212 For better presentation of the cross-spectral data, a descriptive statistical analysis is performed. The statistical analysis of coherence and partial coherence for both normal and COPD subjects is summarized in table 5.3.1. From this table, the mean weighted coherence and partial coherence values are plotted as shown in figure 5.53. From this figure, both the coherence and partial coherences in the LF range of normal subjects are almost double the values of COPD subjects. In the HF range, only the coherence and partial coherence values between HR & Rsp of normal are significantly higher than COPD subjects. These observations may indicate that heart rates in normal subjects are affected by respiration a lot more than COPD subjects. With much higher coherence/partial coherence in the LF range, both the sympathetic and parasympathetic activities of the ANS contribute much more to variation in heart rate of normal subjects than COPD subjects. Figure 5.53 also shows higher coherence and partial coherence values between BP and respiration of COPD subjects in the HF range than those of normal subjects. This may be due to a more dominant coupling effect of the respiration signal on the blood pressure in COPD subjects while this phenomenon is absent in the normal population. Since COPD subjects breathe faster and more shallow, with the coupling effect of respiration on blood pressure, it causes the blood pressure to have less variability which in turn causes less changes in heart rate variability in COPD subjects.
- Page 189 and 190: Figure 5.5 Test signal with 3 sine
- Page 191 and 192: 162 Figure 5.6 (c) CWD of a signal
- Page 193 and 194: 164 Figure 5.7 (c) WT (dB4 wavelet)
- Page 195 and 196: 166 HRV more information about HRV
- Page 197 and 198: 168 Figure 5.9 (c) CWD plots of a n
- Page 199 and 200: Figure 5.10 CWT (Morlet) HRV plot o
- Page 201 and 202: 172 The following figures show the
- Page 203 and 204: 174 Figure 5.15 CWT (Mexican Hat) H
- Page 205 and 206: 176 5.2.5 Best Wavelet Selection fo
- Page 207 and 208: 178 Table 5.1 Correlation Indices o
- Page 209 and 210: 180 5.2.6 Vagal Tone and Sympathova
- Page 211 and 212: 182 These figures basically show th
- Page 213 and 214: 184 Figure 5.20 Sympathetic and par
- Page 215 and 216: 186 Figure 5.24 Sympathetic and par
- Page 217 and 218: 188 5.2.7 Time-Frequency Analysis (
- Page 219 and 220: 190 Figure 5.29 3D and contour plot
- Page 221 and 222: 192 Figure 5.33 3D and contour plot
- Page 223 and 224: 194 Figure 5.34 Sympathetic and par
- Page 225 and 226: 196 Figure 5.38 Sympathetic and par
- Page 227 and 228: 198 Figure 5.42 Sympathetic and par
- Page 229 and 230: Figure 5.44 Plot of raw respiration
- Page 231 and 232: Figure 5.46 The LF partial coherenc
- Page 233 and 234: Figure 5.48 HF partial coherence pl
- Page 235 and 236: Table 5.2 Cross-Spectral Analysis o
- Page 237 and 238: Table 5.3 Cross-Spectral Analysis o
- Page 239: Figure 5.50 HF coherence of COPD (1
- Page 243 and 244: Figure 5.53 Coherence and partial c
- Page 245 and 246: 216 2. Interpretation of the transf
- Page 247 and 248: 218 covariances of the parameters,
- Page 249 and 250: 220 deviations are interpreted as A
- Page 251 and 252: 222 Figure 5.58 Bode plot of the HR
- Page 253 and 254: 224 In this section a simple model
- Page 255 and 256: 226 The data for all 47 COPD subjec
- Page 257 and 258: 228 Figure 5.60 Normal and COPD cla
- Page 259 and 260: 230 Figure 5.61 Normal and COPD cla
- Page 261 and 262: 232 Figure 5.62 Normal classificati
- Page 263 and 264: 234 5.7 Cluster Analysis The purpos
- Page 265 and 266: 236 Figure 5.64 Severity classifica
- Page 267 and 268: 238 both the normal and COPD subjec
- Page 269 and 270: 240 In summary, COPD subjects had h
- Page 271 and 272: APPENDIX A EXERCISE PHYSIOLOGY A.1
- Page 273 and 274: 244 A.3 Figure Out Your Target Hear
- Page 275 and 276: APPENDIX B ANALYSIS PROGRAM LISTING
- Page 277 and 278: 248 4) Click on file, close to exit
- Page 279 and 280: 250 • TN 11
- Page 281 and 282: 252 B.1.2 Partial Coherence Between
- Page 283 and 284: 254
- Page 285 and 286: 256 Block Diagram !rime of record K
- Page 287 and 288: 258
- Page 289 and 290: 260 B.2.2 Time — Frequency Analys
211<br />
Figure5.51 LF partial coherence <strong>of</strong> COPD (1-47) and normal (48-55) subjects.<br />
Figure 5.52 HF partial coherence <strong>of</strong> COPD (1-47) and normal (48-55) subjects.
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