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Exam Prep Exercise Science Practice Exam

Pregunta 1 de 30

1

Which of the following does the cross-bridge attach to during the excitation-contraction coupling phase?

Selecciona una de las siguientes respuestas posibles:

  • Myosin

  • Actin

  • Troponin

Explicación

Pregunta 2 de 30

1

A 22-year old soccer player begins resistance training for the FIRST TIME. All major muscle groups are included. Which of the following BEST explains an increase in lower-extremity strength after 3 weeks?

Selecciona una de las siguientes respuestas posibles:

  • Muscle hypertrophy

  • Muscle hyperplasia

  • Improved neuromuscular function

Explicación

Pregunta 3 de 30

1

The energy system used during exercise depends on which of the following training variables?
I. Mode
II. Duration
III. Frequency
IV. Intensity

Selecciona una de las siguientes respuestas posibles:

  • I and IV only

  • II and IV only

  • III and IV only

Explicación

Pregunta 4 de 30

1

When a motor unit is stimulated, all of its innervated muscle fibers fully contract due to

Selecciona una de las siguientes respuestas posibles:

  • the size principle

  • the principle of selective recruitment

  • the all-or-none law

Explicación

Pregunta 5 de 30

1

An elite aerobic endurance runner preparing for a 26.6-mi marathon will have a high concentration of which of the following types of muscle fibers?

Selecciona una de las siguientes respuestas posibles:

  • Type I

  • Type IIa

  • Type IIx

Explicación

Pregunta 6 de 30

1

Michelle runs 30-40 mi/week (10-12 Sun: 8 Mon; 6 Wed; 8 Fri) and wants to improve her 10-k time, currently at 74 min. Which of the following is the MOST appropriate modification to her program?

Selecciona una de las siguientes respuestas posibles:

  • Increase her long run to 15 miles

  • 150m track repeats

  • 400-800m track repeats

Explicación

Pregunta 7 de 30

1

Which of the following will occur as a result of shortening rest periods from 2 minutes to 1 minute in a 10RM circuit weight training program?

Selecciona una de las siguientes respuestas posibles:

  • Increased lactic acid levels

  • Increased pH levels

  • Decreased creatine kinase levels

Explicación

Pregunta 8 de 30

1

A football wide receiver performs 10 sprints of 40 yards to increase his 40 yard sprint speed. What is the primary energy system?

Selecciona una de las siguientes respuestas posibles:

  • Oxidative

  • Phosphagen

  • Fast Glycolysis

Explicación

Pregunta 9 de 30

1

Which of the following enzymes catalyze the rate-limiting step of glycolysis?

Selecciona una de las siguientes respuestas posibles:

  • Phosphorylase

  • Lactate dehydrogenase

  • Phosphofructokinase

Explicación

Pregunta 10 de 30

1

Which of the following can be metabolized anaerobically?

Selecciona una de las siguientes respuestas posibles:

  • Protein

  • Carbohydrate

  • Fat

Explicación

Pregunta 11 de 30

1

Which of the following substances is MOST important in the regulation of muscle action?

Selecciona una de las siguientes respuestas posibles:

  • Calcium

  • Phosphorus

  • Potassium

Explicación

Pregunta 12 de 30

1

The wide grip bench press movement primarily takes place in which of the following anatomical planes?

Selecciona una de las siguientes respuestas posibles:

  • Sagittal

  • Frontal

  • Transverse

Explicación

Pregunta 13 de 30

1

Most human limbs operate as which class of lever?

Selecciona una de las siguientes respuestas posibles:

  • Third Class

  • Second Class

  • First Class

Explicación

Pregunta 14 de 30

1

Which is these is NOT one of the 8 biomechanical factors related to strength?

Selecciona una de las siguientes respuestas posibles:

  • Energy System Used

  • Muscle Cross Sectional Area

  • Joint Angular Velocity

Explicación

Pregunta 15 de 30

1

Which of the following best describes the differences between the downward and upward phases of a 1RM squat?

Selecciona una de las siguientes respuestas posibles:

  • Energy requirements are the same during the downward and upward phases

  • Less energy is required during the downward phase

  • More muscle activity occurs during the downward phase

Explicación

Pregunta 16 de 30

1

Which type of exercise has the GREATEST positive influence on bone mineral density?

Selecciona una de las siguientes respuestas posibles:

  • Open kinetic chain

  • Single-joint assistance

  • Axial Loading

Explicación

Pregunta 17 de 30

1

During free-weight exercise, muscle force varies with which of the following:

I. Perpendicular distance from the weight to the body joint
II. Joint angle
III. Movement velocity
IV. Movement velocity squared

Selecciona una de las siguientes respuestas posibles:

  • I and III only

  • I, II, and III only

  • II and III only

Explicación

Pregunta 18 de 30

1

A sophomore collegiate 1600-m runner has been aerobically training for 2 years. She increases her performance time throughout the course of her first season. Which of the following physiological responses is PRIMARILY responsible for her performance increases?

Selecciona una de las siguientes respuestas posibles:

  • Increase in running economy

  • Increase in maximal hear rate

  • Decrease in lactate threshold

Explicación

Pregunta 19 de 30

1

Which of the following has the GREATEST influence on an athlete's dietary carbohydrate requirement?

Selecciona una de las siguientes respuestas posibles:

  • Body size and body fat percentage

  • Type, duration, and frequency of exercise

  • Resting blood sugar levels

Explicación

Pregunta 20 de 30

1

Which of the following adaptations is an outcome of heavy resistance training (>85% 1RM) that can IMPROVE the performance of a baseball pitcher?

Selecciona una de las siguientes respuestas posibles:

  • Improved lactate clearance

  • Increase glycogen & triglyceride storage capacity

  • Increased cross-sectional are of Type II muscle fibers

Explicación

Pregunta 21 de 30

1

Which of the following is a marker of aerobic overtraining?

Selecciona una de las siguientes respuestas posibles:

  • Increased serum testosterone concentration

  • Decreased muscle glycogen stores

  • Increased testosterone-to-cortisol ratios

Explicación

Pregunta 22 de 30

1

Which of the following cardiovascular responses is disproportionately high during a resistance training exercise as compared to an aerobic exercise?

Selecciona una de las siguientes respuestas posibles:

  • Cardiac Output

  • Heart Rate

  • Stroke Volume

Explicación

Pregunta 23 de 30

1

A 33-year-old, 5'1" woman has been working with a personal trainer for 6 months. Her initial and most recent body composition tests revealed these results:

January 1: Bodyweight=130lbs Body fat=30%

January 30: Bodyweight=124lbs Body fat=25%

Approximately how much body fat (in lbs) has this client lost since her first body composition evaluation?

Selecciona una de las siguientes respuestas posibles:

  • 39lbs

  • 8lbs

  • 12lbs

Explicación

Pregunta 24 de 30

1

Which of the following is most important to replace after strenuous exercise in a warm climate?

Selecciona una de las siguientes respuestas posibles:

  • Sodium

  • Water

  • Carbohydrates

Explicación

Pregunta 25 de 30

1

An 18-year-old male baseball player has a RMR of 2,200 calories. He expends 700 calories per day through exercise and ingests the following:

Average daily protein intake: 125g
Average daily carb intake: 425g
Average daily fat intake: 40g

He would like to gain six pounds of muscle in 6 weeks. How many additional cals/day should he ingest daily to reach this goal?

Selecciona una de las siguientes respuestas posibles:

  • 697 kcals/day

  • 357 kcals/day

  • 427 kcals/day

Explicación

Pregunta 26 de 30

1

A wrestler prepares for a competition and loses 11 lbs in 5 days. Most of the weight loss is

Selecciona una de las siguientes respuestas posibles:

  • Fat

  • Water

  • Muscle Tissue

Explicación

Pregunta 27 de 30

1

A 22-year-old female college swimmer has the following anthropometric data:
Height: 66in Weight: 70kg Body fat: 22%

What is her approximate lean body mass in lbs?

Selecciona una o más de las siguientes respuestas posibles:

  • 120

  • 34

  • 154

Explicación

Pregunta 28 de 30

1

Which of the following BEST explains the requirement for increased protein intake by athletes?

Selecciona una o más de las siguientes respuestas posibles:

  • Decreased protein oxidation during aerobic exercise

  • Increased need for tissue repair

  • Protein quality

Explicación

Pregunta 29 de 30

1

An 18-year-old male baseball player has a RMR of 2,200 calories. He expends 700 calories per day through exercise and ingests the following:

Average daily protein intake: 125g
Average daily carb intake: 425g
Average daily fat intake: 40g

How many calories does he eat each day?

Selecciona una o más de las siguientes respuestas posibles:

  • 2360

  • 2560

  • 2460

Explicación

Pregunta 30 de 30

1

Which of the following proteins has an amino acid profile MOST similar to the body's needs?

Selecciona una o más de las siguientes respuestas posibles:

  • Soy

  • Milk

  • Egg

Explicación

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