Abstract
Exercise training is an important component of coronary heart disease (CHD) management, however engagement in gym-based exercise (GEX) remains sub-optimal. Water-based exercise (WEX) may provide an alternative, especially for patients with obesity or arthritis due to the buoyancy effect of water. PURPOSE: To examine the effectiveness of WEX for people with CHD. METHODS: Participants were randomised to 12 weeks of WEX, GEX, or control. Training groups undertook three, one-hour sessions of circuit training per week. Aerobic capacity (VO2peak), muscular strength (one repetition maximum; 1RM), body fat (DXA) and endothelial function (flow mediated dilation; FMD) were assessed at baseline and 12 weeks. Data were analysed using STATA 16 with mixed effects linear regression. RESULTS: Forty-five participants completed the study; WEX (n= 15), GEX (n=18), control (n=12). Data reported are estimated mean and 95% confidence interval.CONCLUSION: WEX and GEX improved aerobic fitness, leg strength and fat mass similarly, while WEX alone improved endothelial function. These findings support WEX as an alternative to GEX in patients with CHD. Supported by the Spinnaker Foundation, The Heart Foundation (Australia), and the Australian Government Research Training Programme.
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