Afterload is increased when aortic pressure and systemic vascular resistance are increased, by aortic valve stenosis, and by ventricular dilation. When afterload increases, there is an increase in end-systolic volume and a decrease in stroke volume.
Best Answer: Sharks typically swim with the even, liquid grace of a creature completely at home with its place in the Universe. Large sharks generally cruise at a leisurely 1.5 miles (2.4 kilometres) per hour.Because most species fare poorly in captivity, the maximum swimming speed of a shark has seldom been measured.f, as Thorburn and Bhana attest, the shark did indeed start from a standstill-which seems behaviorally unlikely-to cover the stated distance in the stated time, the little Mako must have achieved an acceleration of at least 50 feet (15 metres) per second, per second.
The french swimmer FrÃ©dÃ©rick Bousquet set world record in the 50 m freestyle with a time of 20.94 seconds . Over the course of the race, he swam at an average speed of 5.342 mph (8.6 km/hr) and is the fastest recorded speed of a human swimming. To put into perspective the Sailfish can swim at 68mph (110km/hr) on distances much greater than 50 m. Written May 5, 2015 â¢ View Upvotes.