CCSP Exercise Physiology & Sports Performance Testing

Question 1

The phosphocreatine (ATP-PC) energy system is the primary fuel source for activities lasting approximately how long?

Accepted Answer

0–10 seconds

Answer

30–60 seconds

Answer

1–3 minutes

Answer

Over 3 minutes

Question 2

VO2 max is defined as which of the following?

Accepted Answer

The maximum rate of oxygen consumption during maximal incremental exercise

Answer

The resting oxygen consumption of skeletal muscle at basal metabolic rate

Answer

The ratio of oxygen delivered to oxygen consumed at rest

Answer

The partial pressure of oxygen in arterial blood during exercise

Question 3

The glycolytic (anaerobic) energy system is the primary energy source for activities lasting approximately:

Accepted Answer

10 seconds to 2 minutes

Answer

0–10 seconds

Answer

2–5 minutes

Answer

Greater than 10 minutes

Question 4

During intense exercise approaching VO2 max, which fuel substrate provides the greatest contribution to muscle energy?

Accepted Answer

Muscle glycogen via anaerobic glycolysis

Answer

Free fatty acids from adipose tissue

Answer

Ketone bodies from hepatic metabolism

Answer

Blood glucose from hepatic glycogenolysis

Question 5

The Fick equation expresses VO2 as:

Accepted Answer

Cardiac output multiplied by the arteriovenous oxygen difference

Answer

Heart rate multiplied by stroke volume

Answer

Pulmonary ventilation divided by oxygen saturation

Answer

Hemoglobin concentration multiplied by SpO2

Question 6

Compared to Type I (slow-twitch) muscle fibers, Type II (fast-twitch) fibers are best characterized by:

Accepted Answer

Greater peak force production but faster fatigability

Answer

Higher oxidative capacity and greater fatigue resistance

Answer

More mitochondria and higher capillary density

Answer

Preferential use of fat as fuel during high-intensity exercise

Question 7

The lactate threshold is best defined as the exercise intensity at which:

Accepted Answer

Blood lactate begins to accumulate faster than it can be cleared

Answer

Skeletal muscle glycogen stores are fully depleted

Answer

Arterial oxygen saturation drops below 95%

Answer

Heart rate exceeds 85% of age-predicted maximum