NSCA CSCS Practice Questions - Part 1REVIEW and EXPLANATION

[@thestrengthcoachtutor4176]

Looking for more questions? Head to thestrengthcoachtutor.com now and join my Online Classroom!

[@geraldyusko5499]

just because you go from eccentric to concentric, doesn't change the primary mover. Eccentric is lengthening of the muscle, the tibialis anterior in a concentric contraction does doors flexion, if you are doing an eccentric contraction, it's still the same muscle. Answer is still the tibialis anterior.

[@thestrengthcoachtutor4176]

What you are saying is correct. But take another look at the context of the question. Eccentric dorsiflexion. That's asking what muscle is eccentrically contracting as I go into dorsiflexion? Like you said, the tibialis anterior pulls the ankle into dorsiflexion when it concentrically contracts. If the tibialis anterior eccentrically contracts, the ankle would lower into plantarflexion. So for the gastrocnemius, it concentrically does plantarflexion, but eccentrically it controls the rate at which the ankle goes into dorsiflexion.

[@SimpExterminator]

You are incorrect. You have to analyze the question carefully and realize it's asking for the muscle that would be involved in ECCENTRICALLY dorsiflexing the ankle, not concentric which is what you're thinking of. Think of a standing calf raise. When you push the weight up, you're plantarflexing the ankle and thus making the gastroc working concentrically, right? But now, when you slowly bring the weight down in a controlled manner, you are still using the gastroc muscle BUT they are working eccentrically to dorsiflex as you come down.

[@josephmoore977]

7:48 I think you may have this backwards. Wouldn't your feet move further away (laterally) when you externally rotate and closer together (medial direction) when you internally rotate?

[@thestrengthcoachtutor4176]

That would be true if you are standing, but not in a seated position as the question states in the video.

[@a.ghobrial1092]

How is question 5 the gastroc? With this logic, the triceps would be the primary muscle in an eccentric curl contraction. False? I get the gastroc concentric contraction is the same movement pattern as AT dorsi flexion. Put a dumbbell between your feet as you hang from a bar. Do dorsi flexion, then lower it. The eccentric dorsi contraction is primarily governed by anterior tib. If I’m wrong, please explain

[@SimpExterminator]

It is definitely the gastroc. Let's look at another example. A biceps curl coming up is concentrically working right? So, does that mean that extending back down is working the triceps? No, because you have to eccentrically control the weight going back down, which means the biceps are still working but now eccentrically . Same idea with the gastroc and tibialis anterior. To eccentrically control a movement into dorsiflexion, it is still the gastroc working, not the tib anterior.

[@amatotravis]

Hey, thanks for the practice, awesome video. I was wondering if you could explain the lat question a bit more. My understanding was that in eccentric muscle actions we would still consider the prime mover to be the one controlling the movement. In your example, it would still be the tibialis anterior controlling the eccentric dorsiflexion unless it was active plantar flexion?

[@thestrengthcoachtutor4176]

Hey Travis, you are on the right path, but let me help. There's only two ways to go into dorsiflexion: concentric contraction of the tibialis anterior, or eccentric contraction of the gastrocnemius/soleus. If the tibialis anterior were to eccentrically contract, our ankle would go into plantarflexion. When we talk about a muscle's action, we always discuss in the context of its concentric joint action. This question is intended to do the opposite.

[@strivemore]

Brilliant!!

[@bolterboy]

So these questions aren't directly from the NSCA??

[@thestrengthcoachtutor4176]

No these are questions from one of the quizzes in my online classroom. I do my best to create questions that replicate the NSCA's, and to test your knowledge and understanding of the material.

[@geraldyusko5499]

Number 3 is not sagittal.

[@thestrengthcoachtutor4176]

You're right. It is frontal.