Document Detail

Blood pressure rise with swimming versus walking in older women: the Sedentary Women Exercise Adherence Trial 2 (SWEAT 2).
MedLine Citation:
PMID:  16508577     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Swimming is often recommended in the prevention and treatment of hypertension. Few studies have investigated the effect of swimming training on blood pressure (BP). Our objective was to evaluate 6 months of supervised moderate swimming or walking on BP in previously sedentary, normotensive, older women. DESIGN: Women aged 50-70 years (n = 116) were randomly assigned to a supervised 6-month swimming or walking programme. They were further randomized to receive usual care or a behavioural intervention package. METHODS: Exercise comprised 3 sessions/week with a warm-up, cool down, and 30-min of moderate intensity walking or swimming. BP was recorded for 20 min supine, and 5 min standing. Assessments were made at 0 and 6 months. RESULTS: At baseline, mean supine BP (+/- SD) was 115.7 +/- 1.3/66.8 +/- 0.7 mmHg. Swimming improved swim distance by 78.1 m (29.3%) [95% confidence interval (CI); 66.7, 89.4] and walk time by 0.58 min (3.8%) (0.41, 0.74). Walking decreased walk time by 1.0 min (6.5%) (0.81, 1.19). After adjustment for initial BP, age, hypertension treatment status and change in weight, swimming increased supine and standing systolic BP relative to walking by 4.4 mmHg (1.2, 7.5) (P = 0.008) and 6.0 mmHg (2.6, 9.5) (P = 0.001), respectively. Supine and standing diastolic BP increased by 1.4 mmHg (-0.14, 3.0) (P = 0.07) and 1.8 mmHg (-0.02, 3.5) (P = 0.05), respectively. CONCLUSION: Relative to moderately paced walking, regular swimming significantly elevates BP in previously sedentary, normotensive, older women. This finding may have important implications for exercise prescription in older subjects.
Kay L Cox; Valerie Burke; Lawrence J Beilin; J Robert Grove; Brian A Blanksby; Ian B Puddey
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of hypertension     Volume:  24     ISSN:  0263-6352     ISO Abbreviation:  J. Hypertens.     Publication Date:  2006 Feb 
Date Detail:
Created Date:  2006-03-01     Completed Date:  2006-03-31     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8306882     Medline TA:  J Hypertens     Country:  England    
Other Details:
Languages:  eng     Pagination:  307-14     Citation Subset:  IM    
School of Medicine and Pharmacology, University of Western Australia, Western Australian Institute for Medical Research, Perth, Western Australia. KayCox@cyllene,
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MeSH Terms
Blood Pressure*
Heart Rate
Middle Aged
Physical Fitness
Comment In:
J Hypertens. 2006 Feb;24(2):269-72   [PMID:  16508569 ]

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