Deck 7: Exercise Selection

Question 1

One of the fastest ways to elevate heart rate and increase oxygen consumption during exercise is to add weight to the limb being moved. Which of the following statements is the MOST accurate regarding this phenomenon? The use of 1 to 3-lb arm weights can:

A)Increase heart rate by 5-10 beats per minute
B)Increase oxygen consumption by 20%
C)Increase oxygen consumption by 30%
D)Increase carbon dioxide expulsion by 25%

Answer 1

Increase heart rate by 5-10 beats per minute

Question 2

One of the fastest ways to elevate heart rate and increase oxygen consumption during exercise is to add weight to the limb being moved. What is the BEST reason for choosing wrist weights instead of hand weights?

A)Wrist weights do not stress the small bones of the hand
B)Wrist weights do not require a gripping motion, thus reducing the likelihood of elevated blood pressure
C)Wrist weights are more comfortable
D)Wrist weights are less expensive

Answer 2

Wrist weights do not require a gripping motion, thus reducing the likelihood of elevated blood pressure

Question 3

Motor units are the functional unit of movement. What composes a motor unit?

A)The motor cortex, spinal cord, and muscle
B)The motor cortex, cerebellum, spinal cord, and muscle
C)Either an alpha or gamma neuron and all the muscle fibers they innervate
D)An alpha motor neuron and all the muscle fibers it innervates

Answer 3

An alpha motor neuron and all the muscle fibers it innervates

Question 4

Exercises can be classified as open chain or closed chain. Which of the following is the BEST example of a common closed-chain exercise?

A)Triceps kickback
B)Hamstring curl
C)Lunges
D)Knee extensions

Question 5

Group Fitness Instructors (GFIs) need to provide feedback in a group format, without the feedback feeling invasive or overtly personal to class members. Which of the following is UNLIKELY to be a component part of proper feedback as described by Wlodkowski (1998).

A)Point out something positive the class member is doing
B)Provide a necessary correction
C)Provide feedback after the correction is implemented
D)Direct the group to emulate the newly corrected activity as performed by the class member

Question 6

Flexibility exercises are designed to increase the elasticity of both contractile and non-contractile tissues surrounding or crossing a joint. Which of the following is the MOST accurate representation of the relative contributions of the body's soft tissue to the total resistance encountered by a joint during movement?

A)Skin (20%), tendons (22%), muscle/fascia (40%), joint capsule/ligaments (18%)
B)Skin (2%), tendons (10%), muscle/fascia (41%), joint capsule/ligaments (47%)
C)Skin (5%), tendons (52%), muscle/fascia (30%), joint capsule/ligaments (13%)
D)Skin (10%), tendons (40%), muscle/fascia (43%), joint capsule/ligaments (7%)

Question 7

Which of the following is NOT commonly described as a major component of physical fitness?

A)Muscular endurance
B)Muscular strength
C)Agility
D)Cardiovascular endurance

Question 8

Your popular balance class is held in the swimming pool because of the inherent "protective" qualities of exercise in water. Which of the following effect is LEAST likely to be due to the property of buoyancy?

A)A shift in blood from legs towards the thorax
B)A decrease in weight through the legs
C)Resistance during forced immersion of a foam object (such as a dumb-bell)
D)A decrease in compression forces through the spine

Question 9

Classes held in a pool can offer a challenging exercise environment, due in part to the inherent properties of water. Which of the following is MOST correct? The drag effect of water

A)Allows the instructor to increase resistance merely by performing movements more rapidly
B)Creates a slowing of the heart rate during exercise in water by increasing the shift of blood to thorax, increasing pre-load of the heart, and thus increasing stroke volume
C)Causes patients with a habitual visual method of joint placement (e.g. someone who looks at his feet to walk) to use his proprioceptive system instead.
D)Produces less spinal and lower extremity joint compression than the identical exercise performed on land.

Question 10

Which of the following statements is true?

A)Shoulder flexion and extension occur in the sagittal plane
B)Shoulder flexion and extension occur in the frontal plane
C)Hip adduction and abduction occur in the sagittal plane
D)Hip adduction and abduction occur in the transverse plane
E)Cardiovascular exercise is not a cure-all. While exercise protects against heart disease, active adults can still develop heart problems
F)Meeting the minimum guidelines for physical activity will "make up" for a sedentary lifestyle
G)Cardiovascular exercises should focus primarily on motor skills such as balance, agility, coordination and gait
H)Resistance training is contra-indicated for the geriatric population

Question 11

The anterior thigh is comprised of a group of muscles commonly referenced as the quadriceps. These four muscles - the rectus femoris, vast us medial is, vast us lateral is and vast us intermedius -- all operate on the knee to produce extension. However, only one of the muscles also produces hip flexion. Which one?

A)Vast us medial is
B)Vast us lateral is
C)Vast us intermedius
D)Rectus femoris

Question 12

The lateral deltoid muscle gets all the glory for its primary role as shoulder abductor. However, without the complementary role of the rotator cuff, the deltoid would be a weak shoulder elevator indeed! Which of the following is the LEAST likely to participate in this complementary role as a part of the rotator cuff?

A)Infraspinatus
B)Supraspinatus
C)Teres minor
D)Teres major

Question 13

Woman who routinely wear high heels are at an elevated risk of shortening the tendon commonly referred to as the "heel cord" or Achilles' tendon. The Achilles' tendon is the distal termination of which two muscles?

A)Gastrocnemius and anterior tibialis
B)Gastrocnemius and posterior tibialis
C)Gastrocnemius and popliteus
D)Gastrocnemius and soleus

Question 14

Which of the following is the BEST definition of the frontal plane of movement?

A)A plane that divides the body into a left side and a right side
B)A plane that splits the body into a front and a back
C)A plane that delineates proximal from distal ends of a limb
D)A plane that divides the body into a top and bottom