CSCS Practice Questions – Exercise Science Part 4

Posted by on Apr 11, 2013 in Exercise Science, Practice Questions, Review Topics | 0 comments

The answer to the question in part 3 is:

D – Exercise Intensity then Exercise Duration
I haven’t done a post on this topic, and I probably should at some point.  Basically there are three energy systems that the NSCA refers to.

Phosphagen -> Fast glycolysis -> Oxidative

No energy system is used exclusively for any activity, but one is usually dominant depending on both exercise intensity and duration.  Which is a stronger determinant of the energy system used?  Well, it turns out this was determined empirically through studies, so the NSCA book cites these studies and states:

“During exercise, the degree to which anaerobic and oxidative systems contribute to the energy being produced is determined primarily by the exercise intensity and secondarily by exercise duration” (emphasis mine)

So there’s your answer.  I try and remember this concept by going through this thought experiment.

  • If you run around a track at top speed for 1 minute, what energy system are you using? (answer: glycolytic)
  • If you walk around a track for 1 minute, what energy system are you using? (answer: oxidative)

This works for me because I already have a pretty good understanding of the availability of the different fuel types, and maybe I should go into more detail about this topic in a future post.

New Question!

If I want to maximize my testosterone levels, which resistance training goal uses the loads (%1RM) and rep ranges MOST effective for accomplishing this?

A.  Muscular Strength
B.  Muscular Endurance
C.  Muscular Hypertrophy
D.  Aerobic Endurance

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