ACSM 030-444 Exam - Topic 5 Question 18 Discussion

Actual exam question for ACSM's 030-444 exam

Question #: 18
Topic #: 5

[All 030-444 Questions]

During mild to moderate exercise, pulmonary ventilation increases primarily as a result of increased

ATidal volume.

BBreathing frequency.

CVital capacity.

DTotal lung volume.

Show Suggested Answer

Suggested Answer: A

by Stevie at Jan 05, 2026, 05:16 AM

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Oretha

20 days ago

True, but I feel tidal volume is the primary change.

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Dick

25 days ago

But what about B) Breathing frequency? That could also be a factor.

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Cecilia

1 month ago

I agree, tidal volume increases during exercise.

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Leoma

1 month ago

I think it's A) Tidal volume. It makes sense.

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Lorrie

1 month ago

I agree with A, but B plays a role too!

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Francine

2 months ago

Wait, is it really just tidal volume? That seems too simple.

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Mindy

2 months ago

Vital capacity doesn't really change much during exercise, right?

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Noel

2 months ago

I thought it was B) Breathing frequency.

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Cyndy

2 months ago

Definitely A) Tidal volume!

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Ilene

2 months ago

A. Tidal volume is the right answer. The lungs need to take in more air with each breath during a workout.

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Nu

2 months ago

Haha, D. Total lung volume? That's just silly, everyone knows the lungs don't actually get bigger during exercise.

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Sylvia

3 months ago

I'm not sure, but I'm guessing C. Vital capacity seems like it would be important for exercise.

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Marget

3 months ago

B. Breathing frequency is the correct answer. The body increases breathing rate to get more oxygen during exercise.

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Alline

3 months ago

I think the answer is A. Tidal volume increases during exercise to meet the body's increased oxygen demand.

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Raina

4 months ago

I’m confused because I thought vital capacity was more relevant to overall lung function, not just during exercise. Is it C)?

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Helene

4 months ago

I feel like we did a practice question similar to this, and it focused on tidal volume as well. I’m leaning towards A).

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Marci

4 months ago

I’m not really sure, but I remember something about breathing frequency being important too. Could it be B)?

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Kirk

4 months ago

I think the answer might be A) Tidal volume since we talked about how it increases to meet oxygen demand during exercise.

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Gabriele

4 months ago

The key here is "primarily." I think A) Tidal volume is the best answer, since our breaths get deeper even if the rate also increases during exercise.

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Verda

4 months ago

I'm leaning towards D) Total lung volume. Exercising expands our lung capacity to handle the extra air flow, right? But I'm not 100% sure.

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Essie

5 months ago

B) Breathing frequency seems like a good possibility. Our breathing rate tends to go up during exercise to meet the body's increased oxygen demands.

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Susana

5 months ago

Hmm, I'm not sure about this one. I know ventilation increases, but I'm not confident which specific factor is the primary driver. I'll have to think it through carefully.

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Leonora

5 months ago

I think the answer is A) Tidal volume. During exercise, our breathing becomes deeper to bring in more oxygen.

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Rory

15 days ago

I agree, tidal volume definitely increases during exercise.

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