Quiz: Strengthening (PTA version)

This quiz will assess your knowledge of principles of resistance exercise for strengthening, including muscle fiber types, the overload principle, adaptation, alignment and stabilization.

All of the following factors will influence the tension created by a skeletal muscle, EXCEPT:

The starting position of the muscle

Distance of muscle from heart

Distribution of muscle fiber types

Recruitment of motor units

Question 1 of 10

Which of the following BEST describes the point at which a muscle cannot shorten any further?

Active insufficiency

Passive insufficiency

Close-packed position

Open-packed position

Question 2 of 10

Which of the following definitions is MOST correct when describing muscle power?

The resultant force of a muscle based on demand placed on the muscle

The work produced by a muscle per unit of time

The ability of contractile tissue to produce tension

The ability of a muscle to contract repeatedly against a load

Question 3 of 10

A patient is attempting to perform a supine, bilateral straight-leg raise to increase muscle performance in her abdominal muscles. However, she is unable to perform the activity without excessive lumbar extension as the legs are raised off of the support surface. Which of the following BEST describes this clinical situation?

The patient has poor internal stabilization leading to substitute motions.

The patient requires internal stabilization by the therapist.

The patient has poor alignment leading to substitute motions.

The patient requires the removal of all external stabilization.

Question 4 of 10

In a patient with poor lower extremity muscular endurance, the physical therapist assistant should focus on interventions designed to increase the percentage of which type of muscle fiber, so that the patient can return to walking several miles a day?

Type I

Type IIA

Type III

Type IIB

Question 5 of 10

Which of the following adaptations to resistance exercise BEST describes a change that can be attributed to the neural system?

Increase in capillary bed density

Increase in ATP and myoglobin storage

Increase in number of motor units firing

Muscle fiber hypertrophy

Question 6 of 10

The use of a 1-repetition maximum (1-RM) test is inappropriate in some patient populations. Which of the following patient populations represents the MOST appropriate group with which one would use a 1-RM test?

Older adults who are active

Patients with joint impairments

Patients with cardiovascular pathology

Patients at risk for osteoporosis

Question 7 of 10

Which of the following scenarios BEST describes a situation in which it is acceptable to continue with resistance exercises?

The patient has Guillain-Barre Syndrome.

The tissue being targeted is inflamed.

The patient reports muscle soreness during the exercise.

The patient reports resting angina pectoris.

Question 8 of 10

The physical therapist assistant (PTA) is aware that the patient will likely experience Delayed-Onset Muscle Soreness (DOMS), and may not want to continue the prescribed exercises for fear of the pain. In order to increase the chances that the patient will comply with the exercise prescription, the PTA should:

Increase the intensity of the patient's activity gradually.

Allow the patient plenty of rest between sets and sessions.

Explain to the patient that DOMS is normal and expected.

Provide the patient electrical stimulation to the sore muscles.

Question 9 of 10

10.

Which of the following terms BEST describes the principle that if muscle performance is to improve, a load that exceeds the metabolic capacity of the muscle must be applied?

Overload principle

Specificity of training

Reversibility principle

Cross-training effect

Question 10 of 10

Quiz: Strengthening (PTA version)

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