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Cardiovagal baroreflex sensitivity is improved in children with high blood pressure after a psychosocial intervention (852.1)
Author(s) -
Klassen Stephen,
Chirico Daniele,
Hood Colleen,
Wade Terrance,
Cairney John,
O'Leary Deborah
Publication year - 2014
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.28.1_supplement.852.1
Subject(s) - psychosocial , medicine , blood pressure , baroreflex , percentile , supine position , anthropometry , physical therapy , heart rate , cardiology , psychiatry , statistics , mathematics
The aim of this study was to assess the effectiveness of a Leisure and Well‐Being Model (LWM) psychosocial intervention on blood pressure (BP) regulation in children. Children with consistent BP 蠅 95th percentile and <90th percentile were grouped into high (HBP) and normal blood pressure (NBP) groups, respectively. Anthropometric data were collected along with five minutes of supine beat‐by‐beat BP and R–R interval. High frequency (HF; 0.15‐0.5 Hz) and low frequency (LF; 0.05‐0.15 Hz) power spectral indices were computed and transfer function analysis for the LF region was used to calculate baroreflex sensitivity (BRS). Pre and post‐test measures were taken one year apart. Results from 60 children (43 NBP, 17 HBP) indicated a three‐way interaction between intervention, BP status (NBP or HBP) and time (year 1 to year 2) independent of BMI (p=0.036). HBP participants receiving the intervention demonstrated an improvement in BRS from year 1 (11.4 ± 5.4 ms/mmHg) to year 2 (17.4 ± 8.5 ms/mmHg) compared to the HBP participants that did not receive the intervention (15.3 ± 8.5 ms/mmHg to 13.4 ± 6.5 ms/mmHg). These findings demonstrate that a LWM psychosocial intervention had a positive impact on BP regulation in children with elevated BP. These findings provide evidence of the importance of psychosocial determinants on autonomic regulation of BP in children. Grant Funding Source : Heart and Stroke Foundation of Ontario