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Masked hypertension is 'unmasked' by low-intensity exercise blood pressure
Citation
Schultz, MG and Hare, JL and Marwick, TH and Stowasser, M and Sharman, JE, Masked hypertension is 'unmasked' by low-intensity exercise blood pressure, Blood Pressure, 20, (5) pp. 284-289. ISSN 0803-7051 (2011) [Refereed Article]
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Copyright Statement
Copyright 2011 Scandinavian Foundation for Cardiovascular Research
DOI: doi:10.3109/08037051.2011.566251
Abstract
Purpose: Masked hypertension (MH) independently predicts mortality but cannot be diagnosed from clinic blood pressure
(BP) taken under resting conditions. We sought to determine if MH could be identifi ed from BP taken during a single bout
of low-intensity exercise. Methods. BP was recorded at rest and during brief low-level cycling exercise (60 – 70% of agepredicted
maximal heart rate) in 75 untreated subjects with a hypertensive response to exercise (aged 54 9 years). All
subjects underwent 24-h ambulatory BP monitoring (ABPM) and MH was defi ned as clinic BP 140/90 mmHg and
ABPM BP 130/80 mmHg. Results. There were 42 (56%) patients with MH, and at rest systolic (SBP) was higher in
subjects with MH compared with those without MH (127 9 vs 120 9 mmHg; p 0.05). During exercise, MH subjects
had signifi cantly higher SBP (188 22 vs 168 15 mmHg; p 0.05), with a greater change from baseline (61 21
vs 48 15 mmHg; p 0.05). Low-level exercise SBP was independently associated with MH, and if 175 mmHg, identifi
ed MH with 74% sensitivity and 67% specifi city ( p 0.001). Conclusion. MH can be identifi ed in untreated individuals
from low-intensity exercise SBP. Further research on the diagnostic value of BP during early phases of exercise stress testing
is needed.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Blood pressure, exercise, hypertension, masked hypertension |
| Research Division: | Medical and Health Sciences |
| Research Group: | Cardiorespiratory Medicine and Haematology |
| Research Field: | Cardiology (incl. Cardiovascular Diseases) |
| Objective Division: | Health |
| Objective Group: | Clinical Health (Organs, Diseases and Abnormal Conditions) |
| Objective Field: | Cardiovascular System and Diseases |
| Author: | Schultz, MG (Dr Martin Schultz) |
| Author: | Marwick, TH (Professor Tom Marwick) |
| Author: | Sharman, JE (Professor James Sharman) |
| ID Code: | 70988 |
| Year Published: | 2011 |
| Web of Science® Times Cited: | 32 |
| Deposited By: | Menzies Institute for Medical Research |
| Deposited On: | 2011-07-06 |
| Last Modified: | 2014-05-05 |
| Downloads: | 4 View Download Statistics |
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