ATC Aquatic Kinesiology & Biomechanics 3

Question 1

Laminar flow in aquatic therapy is characterized by water moving:

Accepted Answer

In smooth, parallel layers without cross-currents or eddies

Answer

In chaotic, unpredictable swirling patterns

Answer

Around curved body surfaces creating lateral forces

Answer

Against the direction of patient movement only

Question 2

The Magnus effect in aquatic therapy is most relevant when a patient performs:

Accepted Answer

Movements involving a spinning limb or equipment that generates a perpendicular lift force

Answer

Stationary isometric exercises at the pool wall

Answer

Deep breathing exercises to control buoyancy

Answer

Slow stretching with no resistance equipment

Question 3

Wave drag during aquatic therapy is most significant when the patient is exercising:

Accepted Answer

At or near the water surface where movement generates surface waves

Answer

Fully submerged during deep-water running

Answer

Performing stationary pool-side stretches

Answer

Using a flotation belt in a stationary position

Question 4

A patient with a higher percentage of body fat compared to lean muscle mass will demonstrate which aquatic biomechanical characteristic?

Accepted Answer

Lower specific gravity and greater ease of floating

Answer

Identical buoyancy to a more muscular patient of the same weight

Answer

Higher specific gravity and tendency to sink

Answer

No measurable difference in aquatic biomechanics

Question 5

When calculating the torque created by a buoyant force on a submerged limb, the lever arm should be measured from:

Accepted Answer

The joint axis of rotation to the center of buoyancy of the limb segment

Answer

The pool floor to the distal end of the limb

Answer

The water surface to the patient's center of gravity

Answer

The proximal attachment of the limb to the distal tip

Question 6

Adding a paddle or webbed glove to a patient's hand during aquatic upper extremity exercise primarily increases resistance by:

Accepted Answer

Increasing form drag through a larger frontal surface area

Answer

Increasing the buoyancy of the limb

Answer

Elevating hydrostatic pressure on the hand

Answer

Raising the viscosity of the surrounding water

Question 7

The velocity-resistance relationship in aquatic exercise means that a therapist can most efficiently progress exercise intensity by:

Accepted Answer

Slightly increasing the speed of limb movement to exponentially increase resistance

Answer

Increasing pool depth by 10 cm increments

Answer

Adding body weight through removal of floatation

Answer

Decreasing water temperature to increase viscosity