Final answer:
The submax test in question is a walking test that evaluates cardiovascular fitness and endurance. It assesses the speed of walk, heart rate, age, and gender during a 4-minute walk at a constant pace on a 5% grade.
Step-by-step explanation:
The submax test in question is walking for 4 minutes at a constant pace of 2, 3, 4, or 4.5 mph on a 5% grade. During this test, the speed of walk, heart rate, age, and gender are assessed. The purpose of this test is to evaluate cardiovascular fitness and endurance. By measuring heart rate and speed of walking, this test can provide valuable information about a person's overall health and fitness level.