16. A physical therapist uses pulse pressure calculations to interpret blood pressure data in the clinic. Which blood pressure reading is most suggestive of inadequate cardiac output?

Why is it difficult to throw a ball while treading water (as in water polo)? 

BONUS QUESTION: What is the difference between walking and running when analyzing gait (1 point)? If this questions is answered correctly, the points will be added to your score.

Discuss and list three mechanical principles that apply to either a throwing, striking, hitting or kicking motion? (3 points)

BONUS QUESTIONS: What are the three components of a kinesiological analysis (1.5 point)? These bonus points will be added to your test score if correct. 

Why lift a heavy weight by flexing and then extending the knees, rather than flexing at the hips and then lifting the trunk?

What type of exercise is an exercise in which the velocity of muscle contraction is controlled? 

List and discuss at least one factor that must be considered in any evaluation of a particular exercise or piece of exercise equipment (1 point).

Why is it more difficult to perform a sit-up when the hands are clasped behind the head than when the arms are kept at the side? 

Which best describes the striking segment when hitting a ball with as high of a velocity as possible?