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BioMed Research International
Volume 2014, Article ID 728289, 9 pages
Research Article

High-Intensity Intermittent Swimming Improves Cardiovascular Health Status for Women with Mild Hypertension

1Sport and Health Sciences, College of Life and Environmental Sciences, St. Luke’s Campus, University of Exeter, Exeter EX12LU, UK
2Department of Food and Nutrition, and Sport Sciences, University of Gothenburg, 405 30 Gothenburg, Sweden
3Department of Nutrition, Exercise and Sports, Copenhagen Centre for Team Sport and Health, University of Copenhagen, 2100 Copenhagen, Denmark
4The Faroese Confederation of Sports and Olympic Committee, 100 Torshavn, Faroe Islands
5Department of Nursing, Faculty of Natural and Health Sciences, University of the Faroe Islands, 100 Torshavn, Faroe Islands
6Southern Hospital, The Faroese Hospital System, Faroe Islands
7Department of Medicine, The Faroese National Hospital, 100 Torshavn, Faroe Islands
8Department of Clinical Physiology, Nuclear Medicine & PET, Rigshospitalet, Copenhagen University Hospital, 2100 Copenhagen, Denmark
9Department of Occupational Medicine and Public Health, The Faroese Hospital System, 100 Torshavn, Faroe Islands

Received 21 January 2014; Revised 11 March 2014; Accepted 11 March 2014; Published 10 April 2014

Academic Editor: David G. Behm

Copyright © 2014 Magni Mohr et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


To test the hypothesis that high-intensity swim training improves cardiovascular health status in sedentary premenopausal women with mild hypertension, sixty-two women were randomized into high-intensity (; HIT), moderate-intensity (; MOD), and control groups (; CON). HIT performed 6–10 × 30 s all-out swimming interspersed by 2 min recovery and MOD swam continuously for 1 h at moderate intensity for a 15-week period completing in total and sessions, respectively. In CON, all measured variables were similar before and after the intervention period. Systolic BP decreased () by and  mmHg in HIT and MOD; respectively. Resting heart rate declined () by bpm both in HIT and MOD, fat mass decreased () by and  kg, respectively, while the blood lipid profile was unaltered. In HIT and MOD, performance improved () for a maximal 10 min swim (% and %), interval swimming (% and %), and Yo-Yo IE1 running performance (% and %). In conclusion, high-intensity intermittent swimming is an effective training strategy to improve cardiovascular health and physical performance in sedentary women with mild hypertension. Adaptations are similar with high- and moderate-intensity training, despite markedly less total time spent and distance covered in the high-intensity group.