NSCA CSCS 問題練習

Question No : 1
Which lung structure provides the principal surface for gas exchange with pulmonary capillary blood?

• A.Trachea
• B.Primary bronchus
• C.Alveolus

答えを確認する

正解:
Explanation:
Alveoli provide the principal surface for exchange with pulmonary capillary blood. Their thin interface permits oxygen and carbon dioxide to diffuse between air and blood.

Question No : 2
Two athletes try the same brief self-talk cue during comparable technical practice. One consistently finds it helpful; the other reports distraction and loses movement consistency. Which next step BEST applies self-talk to this difference?

• A.Keep the cue for both athletes and extend the second athlete’s practice without changing the cue
• B.Replace the cue for both athletes because the second athlete’s difficulty suggests it is unsuitable for the team
• C.Trial a relevant alternative cue with the second athlete and evaluate each athlete’s response

答えを確認する

正解:
Explanation:
C responds to the different observed effects while retaining an effective cue for the first athlete. A assumes that additional exposure will resolve the second athlete's distraction. B generalizes the second athlete's response to the first. Self-talk is evaluated by its relevance and the individual's response.

Question No : 3
Which hormone facilitates glucose uptake by skeletal muscle and supports glycogen storage after nutrient intake?

• A.Glucagon
• B.Somatostatin
• C.Insulin

答えを確認する

正解:
Explanation:
Insulin facilitates glucose uptake by skeletal muscle after nutrient intake and supports glucose storage as glycogen. These uptake and storage actions are the functions specified in the question.

Question No : 4
Which proprioceptor primarily detects tension produced by skeletal muscle?

• A.Muscle spindle
• B.Golgi tendon organ
• C.Cutaneous touch receptor

答えを確認する

正解:
Explanation:
Golgi tendon organs sense tension transmitted through tendons. Muscle spindles primarily provide information about muscle length and changes in length. Cutaneous receptors provide information from the skin.

Question No : 5
A healthy collegiate athlete says that having no input into training reduces motivation. The coach has two exercise variations that are equally appropriate for the session goal and that the athlete can perform safely. Which change BEST supports autonomy while preserving the training objective?

• A.Let the athlete choose between the two appropriate variations
• B.Show the athlete evidence of improved technique while retaining coach selection of the variation
• C.Explain the coach's preferred variation and ask the athlete to follow that selection

答えを確認する

正解:
Explanation:
A gives the athlete meaningful choice between safe options that meet the same goal. B can support competence but does not add choice. C explains a coach-led decision while leaving selection with the coach.

Question No : 6
Which structures together form a skeletal-muscle motor unit?

• A.One motor neuron and the skeletal muscle fibers it innervates
• B.All the muscle fibers within an entire muscle, regardless of innervation
• C.One myofibril and all the actin filaments within that myofibril

答えを確認する

正解:
Explanation:
A skeletal-muscle motor unit consists of one motor neuron and all skeletal muscle fibers it innervates. Motor-unit size varies, so the definition does not require the same number of fibers in every unit.

Question No : 7
In an isolated motor unit, a second stimulus arrives before the fibers have fully relaxed from the first twitch. No additional motor units are activated. Which response is MOST likely?

• A.Greater tension from recruiting more motor units
• B.Lower tension because the second action potential becomes smaller
• C.Greater tension from summation of successive twitches

答えを確認する

正解:
Explanation:
A stimulus arriving before complete relaxation can increase tension through temporal, or wave, summation of successive twitches. The same motor unit remains active; the effect depends on stimulus timing and overlapping contractions.

Question No : 8
Which action is associated with growth hormone?

• A.Supporting protein synthesis and tissue growth
• B.Primarily promoting glucose uptake and storage after a meal
• C.Primarily increasing renal water reabsorption during dehydration

答えを確認する

正解:
Explanation:
Growth hormone supports protein synthesis and tissue growth, directly and through growth factors. B primarily describes insulin's post-meal actions; C describes the water-retaining action of antidiuretic hormone.

Question No : 9
Two supervised resistance-training protocols produce different acute hormone responses: Protocol X has a larger postexercise rise. Over the training block, measured muscle-size gains are similar, while the jump-performance gain is greater with Y. The team prioritizes jumping performance while maintaining muscle size. Which interpretation BEST integrates the results?

• A.Favor X because its larger acute hormone rise is the better indicator of future jump adaptation
• B.Favor Y because it produced greater jump gains with similar muscle-size gains
• C.Treat the programs as equally suitable because they produced similar muscle-size gains

答えを確認する

正解:
Explanation:
Y better matches the stated jump-performance priority while maintaining similar muscle-size gains. A substitutes an acute hormone response for the measured training outcomes. C ignores the difference in jump gains. This comparison does not identify the physiological cause of the gains.

Question No : 10
During a 1-hour session, an athlete drinks 0.4 L. Body mass decreases from 75.0 to 74.2 kg using the same dry-clothing procedure. There is no food intake or urine output. Assuming 1 kg of mass loss ≈ 1 L of fluid and ignoring other mass changes, what is the estimated fluid loss rate?

• A.0.4 L/h
• B.0.8 L/h
• C.1.2 L/h

答えを確認する

正解:
Explanation:
Fluid loss is the 0.8-kg mass decrease plus the 0.4 L consumed: 1.2 L. Dividing by the one-hour duration gives 1.2 L/h. A counts only intake; B omits the fluid consumed. The calculation uses the stated mass-to- fluid approximation.