Water Workouts Work Well
Many people exercise in the water because of its low-impact nature. According to research presented in October at the Canadian Cardiovascular Congress, water exercise may provide similar cardiovascular benefits to land-based workouts.
Twenty-two participants exercised using a dry-land ergocycle and an immersible ergocycle. The dry-land exercise started at 25 watts, increasing by 25 watts each minute until exhaustion. In the water, participants—submerged to chest level—started at about 40 revolutions per minute, increasing by 10 rpm each minute until exhaustion. External power output was measured using equations specific to each environment, taking into account potential drag from pedals, legs, etc.
The researchers found that maximal oxygen consumption was similar for both modalities.
“Exercise during water immersion results in a significantly lower mean VO, O2 pulse and heart rate relative to a land exercise of equivalent power output,” they explained. “These differences are believed to be in part due [to] the hydrostatic forces of water on the body, leading to increased venous return and subsequent rise in cardiac output and compensatory reduction in heart rate, as well as effects on ventilation from external pressure to the chest wall.”
The authors added that further study using a larger sample size was needed to confirm these findings. The abstract of this presentation was published in a supplement of the Canadian Journal of Cardiology (2012; 28, S242).
For the latest research, statistics, sample classes, and more, "Like" IDEA on Facebook here.
© 2013 by IDEA Health & Fitness Inc. All rights reserved. Reproduction without permission is strictly prohibited.
IDEA Newsletter Sign-up
|Extreme Interval Training
In this course you'll learn goal-focused intervals and over 50 dynamic exercises and drills to create extensive and intensive training formats.
|Cut to the Core
This is a raw, unedited video filmed live at the 2009 IDEA World Fitness Convention™. Cut to the Core is packed full of core-focused exercises that aim to improve the way you look, feel and live.
|September 2011 IDEA Fitness Journal Quiz 4: Plyometric Training
This continuing education quiz is an in-depth look at plyometric training. Plyometric exercises—jumping, bounding, hopping, arm pushing, and catching and throwing weighted objects such as machine balls—are movements that involve rapid eccentric and concentric muscle actions.