Midterm 2 Kin 281

Question 1

Land vs water in regards to directional resistance?

Answer 1

Land is- undirectional, resistance is the force of gravity. Greatest at 90 degrees to the floor.
Water is- multidirectional, resistance is the water: requires core stabilization and allows us to use lesser/ weaker muscles

Question 2

Benefits of exercise in water?

Answer 2

Increase in muscle fibber size, strength and endurance, cardio respiratory fitness, bone density, posture/balance, range of motion/ coordination.
Decrease in- stress and tension. Blood cholesterol levels.
Improved- digestion and elimination , CHO metabolism

Question 3

Land vs. Water muscular actions-

Answer 3

Land concentric in one direction water is concentric in both directions.
Land works one muscle group during a single exercise. (Two exercises are needed to work opposing muscle groups)
Water works opposing muscle groups in a single exercise. Allows for muscle balance/symmetry

Question 4

Land vs water changes in direction?

Answer 4

Land air provides less resistance. Water is more resistant than air.
Land we are more agile on land. We are less agile in the water

Question 5

Land vs water movements?

Answer 5

Land more jerky and less controled. Water slower and smoother actions with greater control. Land has increased risk of injury due to speed of movement. Water has screwed rush of injury due to increase control.

Question 6

Land vs water energy expenditure?

Answer 6

No valid research to suggest that effectively planned water based fitness programs are less effective at producing aerobic fitness benefits similar to land based fitness programs. Water based programs must be at lease 6-12 weeks long and include appropriate exercise intensity and progression

Question 7

Who benefits from exercise in water?

Answer 7

Athletes. Youth through older adult populations. Rehabilitation patients. Persons with disabilities. Pre and post natal

Question 8

What are the 5 properties of water?

Answer 8

1. Resistance
2. Turbulence
3. Thermal conductivity
4. Buoyancy
5. Hydrostatic pressure

Question 9

Water provides ________ Times more resistance than air.

Answer 9

12 times

Question 10

Density of water is ______ times greater than air

Answer 10

1000 times

Question 11

What does resistance depend on?

Changes in resistance are accomplished by altering these three factors.

Answer 11

Surface area, speed of movement and ROM.

Question 12

Surface area?

Answer 12

Lever length. Configuration of hands and feet

Question 13

Speed?

Answer 13

Resistance makes water environment conductive to slow controlled movements

Question 14

Range of motion?

Answer 14

Work=force x distance

Increased ROM increases workload and energy cost

Question 15

Turbulence?

Answer 15

Movement can be streamlined of turbulent, depending on the shape and surface area. - more streamlined= greater ease of movement.

Question 16

Pressure is _____ in front of the moving body and _______ in the rear.

Answer 16

Greatest. Decreases

Question 17

Will always move towards any turbulence created?

Answer 17

Stationary body

Question 18

Also creates a wave action

Answer 18

Turbulence