Table 3. Changes in Ambulatory Blood Pressure at Baseline and After the 12-Month Intervention.
| Ambulatory measurement | Study group, mean (SD), mm Hg | Mean between-group difference in change (95% CI) | P value | |||||
|---|---|---|---|---|---|---|---|---|
| Tai Chi (n = 173) | Aerobic exercise (n = 169) | |||||||
| Baseline | 12 mo | Change from baseline | Baseline | 12 mo | Change from baseline | |||
| 24-h SBP | 128.8 (9.5) | 125.6 (8.2) | −3.20 (8.31)a | 128.2 (9.4) | 127.2 (8.2) | −1.04 (7.48) | −2.16 (−3.84 to −0.47) | .01 |
| 24-h DBP | 81.7 (8.0) | 79.9 (7.0) | −1.75 (7.38)b | 81.5 (8.6) | 80.2 (7.3) | −1.35 (7.07)c | −0.40 (−1.94 to 1.13) | .61 |
| Daytime SBP | 131.5 (9.4) | 128.2 (8.3) | −3.34 (8.21)a | 130.9 (9.5) | 129.3 (8.7) | −1.59 (8.57)c | −1.76 (−3.55 to 0.03) | .054 |
| Daytime DBP | 83.2 (8.3) | 81.2 (7.3) | −1.99 (7.52)b | 82.8 (9.0) | 81.3 (7.7) | −1.55 (7.96)c | −0.44 (−2.09 to 1.21) | .60 |
| Nighttime SBP | 123.9 (12.0) | 120.4 (10.5) | −3.45 (12.04)a | 122.6 (14.7) | 123.2 (10.0) | 0.63 (11.50) | −4.08 (−6.59 to −1.57) | .002 |
| Nighttime DBP | 78.9 (10.2) | 77.5 (7.7) | −1.41 (10.83) | 78.7 (11.1) | 78.0 (7.6) | −0.70 (9.62) | −0.71 (−2.89 to 1.48) | .53 |
Abbreviations: DBP, diastolic blood pressure; SBP, systolic blood pressure.
a
Significantly different from baseline to post intervention (P < .001).
b
Significantly different from baseline to post intervention (P < .01).
c
Significantly different from baseline to post intervention (P < .05).