TY - JOUR
T1 - Effect of feedback signal on blood pressure self-regulation capability in individuals with prehypertension or stage i hypertension a randomized controlled study
AU - Wang, Mei Yeh
AU - Chang, Nen-Chung
AU - Hsieh, Ming-Hsiung
AU - Su, Chien-Tien
AU - Liu, Ju-Chi
AU - Shyu, Yuh Kae
AU - Tsai, Pei-Shan
PY - 2016
Y1 - 2016
N2 - Objectives: We aimed to determine the efficacy of an 8-week direct blood pressure (BP) biofeedback training programfor prehypertensive or stage I hypertensive patientswith a particular focus on the impact of the authenticity of feedback signals on the efficacy of BP regulation. Designs: This study has a randomized, double-blind, parallel-group design. Participants and Methods: Fifty-nine individuals with ages from 18 to 64 years and who met the criteria for the diagnosis of prehypertenion or stage 1 hypertension participated in this study. The participants were referrals from physicians or community-dwelling volunteers. No participants had taken antihypertensive medication within the previous 2 months prior to enrollment. The participants were randomly assigned to the biofeedback group (n = 31) trained with real-time BP feedback signals or the control group (n = 28) trained with pseudofeedback signals. The primary outcomemeasureswere systolic BP (SBP) and diastolic BP (DBP). Systolic BP and DBP were assessed at baseline, 1 week after training (week 9), and 8 weeks after training (week 16) in both groups. Only 54 participants had week 16 data. Results: The changes in SBP and DBP from baseline to week 9, from baseline to week 16, and from week 9 to week 16 were not significantly different between the groups (All P 0.05). Both groups were able to significantly decrease BP after completing the training. A percentage of 45.2% of the participants in the biofeedback group and 63.0% of the participants in the control group lowered their SBP by 5 mm Hg or more at week 9. The SBP-lowering effects were also maintained for at least 8 weeks after the completion of training. Conclusions: The equivalent magnitude of BP reduction between the 2 study groups suggests that repeated practice in BP self-regulation was more likely responsible for the efficacy of direct BP biofeedback training than was the type of feedback signals.
AB - Objectives: We aimed to determine the efficacy of an 8-week direct blood pressure (BP) biofeedback training programfor prehypertensive or stage I hypertensive patientswith a particular focus on the impact of the authenticity of feedback signals on the efficacy of BP regulation. Designs: This study has a randomized, double-blind, parallel-group design. Participants and Methods: Fifty-nine individuals with ages from 18 to 64 years and who met the criteria for the diagnosis of prehypertenion or stage 1 hypertension participated in this study. The participants were referrals from physicians or community-dwelling volunteers. No participants had taken antihypertensive medication within the previous 2 months prior to enrollment. The participants were randomly assigned to the biofeedback group (n = 31) trained with real-time BP feedback signals or the control group (n = 28) trained with pseudofeedback signals. The primary outcomemeasureswere systolic BP (SBP) and diastolic BP (DBP). Systolic BP and DBP were assessed at baseline, 1 week after training (week 9), and 8 weeks after training (week 16) in both groups. Only 54 participants had week 16 data. Results: The changes in SBP and DBP from baseline to week 9, from baseline to week 16, and from week 9 to week 16 were not significantly different between the groups (All P 0.05). Both groups were able to significantly decrease BP after completing the training. A percentage of 45.2% of the participants in the biofeedback group and 63.0% of the participants in the control group lowered their SBP by 5 mm Hg or more at week 9. The SBP-lowering effects were also maintained for at least 8 weeks after the completion of training. Conclusions: The equivalent magnitude of BP reduction between the 2 study groups suggests that repeated practice in BP self-regulation was more likely responsible for the efficacy of direct BP biofeedback training than was the type of feedback signals.
KW - blood pressure self-regulation
KW - Direct blood pressure biofeedback
KW - Feedback signal
KW - Hypertension
KW - blood pressure self-regulation
KW - Direct blood pressure biofeedback
KW - Feedback signal
KW - Hypertension
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U2 - 10.1097/JCN.0000000000000239
DO - 10.1097/JCN.0000000000000239
M3 - Article
C2 - 25774838
AN - SCOPUS:84958955712
SN - 0889-4655
VL - 31
SP - 166
EP - 172
JO - Journal of Cardiovascular Nursing
JF - Journal of Cardiovascular Nursing
IS - 2
ER -