Chapter 6: Physical Laws as Applied to the Aquatic Environment

Question 1

Name at least 5 physiological responses to water immersion

Answer 1

Changes in circulation, blood volume, and the heart
Reduced resting & exercise heart rates (aka: reduced cardiac workload)
Changes in thermal regulation and body core temperature
Changes in renal output due to increased production of urine and an increase in blood fluid
Influences of hydrostatic pressure on surface (skin) and internal body organs
Reduced stress on joints
Decompression of the spine in deep water
Reduced swelling (edema) in extremities
Benefits for prenatal participants
Effects of oxygen transport and consumption
Increased muscular effort and rating of perceived exertion
Biomechanical changes in movement patterns
Changes in pulmonary function, pulmonary blood distribution, and added load to respiratory muscles
Improved recovery from exercises performed in the water and on land

Question 2

List some of the benefits of immersion

Answer 2

Less stress on heart and vessels
Reduced joint pain
Reduced blood pressure
Faster recovery from sessions
Healing may occur more rapidly due to increased blood flow
Increased strength and improved efficiency of respiratory muscles

Question 3

List four factors that may alter the extent to which a participant will feel beneficial effects from immersion

Answer 3

Water temperature
Water depth, depth of immersion
Temporary submersion of head and face (dunking)
Intensity of exercise (rest, submaximal exercise, or maximal exercise)