Still, it is not of importance since the natural resistance of water makes this workout as effective as land - based one. (water-aerobics-equipment.com)
Studies proved that the natural resistance of water, along with its zero gravity are the best scenario for old people. (water-aerobics-equipment.com)
Water walking, jogging (suspended with a belt), or actually swimming will allow you to safely use resistance of the water to further develop your aerobic fitness and do some safe resistance training as well. (flippingfifty.com)