Although not part of the original plan, the Joint Chiefs of Staff also created specified commands that had broad and continuing missions but were composed of forces from only one service. Examples include the U.S. Naval Forces, Eastern Atlantic and Mediterranean and the U.S. Air Force's Strategic Air Command.
Longer the test higher will be the sustainability and stronger will be the heart. An estimated time calculated to know how long a stress tests take is around 30 minutes without stoppage. This is considered as a normal time of a stress test if a person is strong enough to sustain the external stress and regular exercise.
How It Works: This test is an improvement over the standard stress test because it adds an ultrasound both before and after exercise to evaluate blood flow to your heart's pumping chambers and check for blockages in the arteries that supply the heart. Cost: $850 to $1,600; Duration: 45 minutes