# Rules of Heliogeomagnetics Diversely Coordinating Biological Rhythms and Promoting Human Health
## 3 Results  
### Changes of Biological Characteristics of BP and HR Associated with Geomagnetic Disturbances  
First, the effect of geomagnetic disturbances on BP and HR variabilities of all 16 participants is examined on the basis of 2-day ABPM records including geomagnetically quiet and disturbed days. Table 1 (top) summarizes changes in circadian and circasemidian parameters of BP and HR related to geomagnetic activity. The circadian amplitude of SBP increased by 29.7% (from 13.8 to 17.9 mm Hg; \(p=0.0236\)), while the circasemidian amplitude decreased by 27.6% (from 10.5 to 7.6 mm Hg; \(p=0.0529\)). The circadian acrophase of SBP and DBP was delayed on disturbed days compared to quiet days (SBP: from 15:08 to 16:14, \(p=0.0574\); DBP: from 15:05 to 16:55, \(p=0.0463\)), whereas the circasemidian acrophase did not change statistically significantly. No change in SBP or DBP MESOR was found between geomagnetically disturbed and quiet days. \begin{table}
\begin{tabular}{c c c c c c c} \hline \multicolumn{2}{c}{**State of Geomagnetic Activity**} & \multicolumn{2}{c}{**Quiet (n = 16)**} & \multicolumn{2}{c}{**Disturbed (n = 16)**} & \multicolumn{2}{c}{**Paired \(t\)-Test**} \\ \hline \multicolumn{2}{c}{**Variable (Units)**} & **Mean** & **SD** & **Mean** & **SD** & **t-Value** & \(p\)**-Value** \\ \hline \multirow{8}{*}{ \begin{tabular}{c} Circadian \\ Characteristics of BP \\ and HR \\ \end{tabular}  } & SBP-M (mmHg) & 119.8 & 9.7425 & 119.8 & 11.8 & 0.023 & 0.982 \\ \cline{2-7}  & SBP-A(24 h) (mmHg) & 13.8 & 4.3158 & 17.9 (129.1\%) & 5.8 & 2.52 & 0.024 \\ \cline{2-7}  & SBP-\(\Phi\)(24 h) (hour.min) & 15.08 & 1.37 & 16.14 & 2.11 & 2.058 & 0.057 \\ \cline{2-7}  & DBP-M (mmHg) & 74.1 & 6.8 & 72.1 & 6.1 & \(-\)1.745 & 0.102 \\ \cline{2-7}  & DBP-A(24 h) (mmHg) & 11.3 & 4.8 & 10.6 & 5.9 & \(-\)0.38 & 0.709 \\ \cline{2-7}  & DBP-\(\Phi\)(24 h) (hour.min) & 15.05 & 1.56 & 16.55 & 3.54 & 2.172 & 0.046 \\ \cline{2-7}  & HB-M (ppm) & 67.2 & 7.1 & 68.2 & 7.4 & 1.035 & 0.317 \\ \cline{2-7}  & HR-A(24 h) (ppm) & 8.3 & 3.8 & 9.7 & 3.4 & 1.567 & 0.138 \\ \cline{2-7}  & HR-\(\Phi\)(24 h) (hour.min) & 14.17 & 2.33 & 14.66 & 3.57 & 0.471 & 0.644 \\ \hline \multirow{8}{*}{\ \begin{tabular}{c} Circadian \\ Characteristics of BP \\ and HR \\ \end{tabular}  } & SBP-M (mmHg) & 118.4 & 9.7 & 119.8 & 11.7 & 0.827 & 0.421 \\ \cline{2-7}  & SBP-A(12 h) (mmHg) & 10.5 & 2.9 & 7.6 (72.4\%) & 4.7 & \(-\)2.101 & 0.053 \\ \cline{2-7}  & SBP-\(\Phi\)(12 h) (hour.min) & 19.08 & 636 & 17.51 & 5.02 & \(-\)0.815 & 0.428 \\ \cline{2-7}  & DBP-M (mmHg) & 73.3 & 6.8 & 72.7 & 6.6 & \(-\)0.478 & 0.640 \\ \cline{2-7}  & DBP-A(12 h) (mmHg) & 9.0 & 4.2 & 6.0 (66.7\%) & 4.3 & \(-\)2.029 & 0.061 \\ \cline{2-7}  & DBP-\(\Phi\)(12 h) (hour.min) & 19:18 & 6.38 & 163.0 & 5.52 & \(-\)1.428 & 0.174 \\ \cline{2-7}  & HR-M (ppm) & 67.1 & 7.0 & 67.9 & 7.3 & 0.827 & 0.421 \\ \cline{2-7}  & HR-A(12 h) (ppm) & 5.0 & 3.1 & 4.2 & 2.6 & \(-\)0.7 & 0.495 \\ \cline{2-7}  & HR-\(\Phi\)(12 h) (hour.min) & 12:57 & 7.58 & 16.03 & 5.34 & 1.412 & 0.179 \\ \hline \multirow{8}{*}{ \begin{tabular}{c} Circadian \\ Characteristics of BP \\ and HR \\ \end{tabular}