2902912
Pregunta 1
Pregunta
Which of the following muscles acts synergistically to the vastus lateralis during the upward movement phase of the squat?
Respuesta
-
biceps femoris
-
rectus abdominis
-
iliopsoas
Pregunta 2
Pregunta
Which is an approximate rest interval for a middle distance runner performing 800-m running intervals in 2 minutes?
Respuesta
-
6 minutes
-
4 minutes
-
3 minutes
Pregunta 3
Pregunta
Which of the following human muscle fiber types possesses the highest capillary density?
Respuesta
-
I
-
lIa
-
lIb
Pregunta 4
Pregunta
Which of the following upper arm muscle groups and types of muscle actions are associated with the biceps curl exercise?
I. flexors, eccentric
II. extensors, eccentric
III. flexors, concentric
IV. extensors, concentric
Respuesta
-
I and III only
-
II and III only
-
II and IV only
Pregunta 5
Pregunta
As compared to males, the potential of force production in females per muscle cross-sectional area is
Respuesta
-
higher.
-
equal.
-
lower.
Pregunta 6
Pregunta
A 176 Ib (80 kg) athlete has an average daily intake of 450g of carbohydrate, 75g of protein, and 100g of fat. What percent of the total kilocalorie intake is fat?
Respuesta
-
30
-
35
-
40
Pregunta 7
Pregunta
Which cardiovascular adaptations to chronic aerobic exercise contribute the most to improved aerobic endurance performance?
Respuesta
-
increased maximal cardiac output
-
decreased resting blood pressure
-
decreased resting heart rate
Pregunta 8
Pregunta
An untrained college-aged athlete begins a strength training program. After training for 3 weeks, her strength increases dramatically. Which of the following is the most influential factor responsible for this improvement?
Respuesta
-
increased cross-sectional area of muscle fibers
-
improved neuromuscular efficiency
-
increased quantity of muscle fibers
Pregunta 9
Pregunta
Which of the following ankle movements and planes of action occur with the upward movement phase of the standing calf (heel) raise exercise?
Respuesta
-
plantar flexion, sagittal
-
plantar flexion, frontal
-
dorsiflexion, frontal
Pregunta 10
Pregunta
All of the following applied program design variables contribute to significant exercise-induced increases in serum testosterone concentrations EXCEPT:
Respuesta
-
high volumes
-
large muscle group exercise
-
long rest periods
Pregunta 11
Pregunta
Which of the following exercises involves a first-class lever?
Respuesta
-
triceps pushdown
-
leg (knee) curl
-
dumbbell biceps curl
Pregunta 12
Pregunta
The depletion of which fuel sources may contribute to fatigue in prolonged aerobic events AND repeated anaerobic exercise bouts?
Respuesta
-
muscle glycogen
-
free fatty acids
-
creatine phosphate
Pregunta 13
Pregunta
Which of the following causes the largest increase in serum growth hormone concentration?
Respuesta
-
high-intensity resistance exercise
-
low-intensity aerobic exercise
-
oral ingestion of arginine
Pregunta 14
Pregunta
Which is a characteristic of fast-twitch muscle fibers?
Respuesta
-
high power output
-
high resistance to fatigue
-
low anaerobic enzyme content
Pregunta 15
Pregunta
What type of lipid comprises the majority of dietary fat?
Respuesta
-
triglycerides .
-
low-density lipoproteins
-
high-density lipoproteins
Pregunta 16
Pregunta
Which activity places the LEAST metabolic demand on the phosphagen energy system?
Respuesta
-
cross-country skiing
-
basketball
-
football
Pregunta 17
Pregunta
Which is a characteristic of a vertical chest press machine versus a free weight bench press?
Respuesta
-
less skill is required to perform the exercise
-
less stress is placed on the prime movers
-
more muscle groups are trained simultaneously
Pregunta 18
Pregunta
In what elbow position is the torque generating capabilities of the elbow flexors greatest?
Respuesta
-
90° elbow flexion
-
0° elbow flexion, since muscles are at their resting length
-
120° elbow flexion
Pregunta 19
Pregunta
What energy system is used the most during a 400 m sprint race?
Respuesta
-
fast glycolysis
-
slow glycolysis
-
Phosphagen
Pregunta 20
Pregunta
Which exercise stimulates the greatest increase in axial skeleton bone mineral density?
Respuesta
-
lying triceps extension
-
lat pulldown
-
shoulder press
Pregunta 21
Pregunta
Which of the following is a dietary source of an incomplete protein?
Respuesta
-
eggs
-
fish
-
legumes
Pregunta 22
Pregunta
Which describes the proper position of the lumbar spine during the performance of the back squat?
Respuesta
-
lordotic
-
flexed
-
kyphotic
Pregunta 23
Pregunta
Which substrates requires oxygen to be available to allow it to be metabolized for energy for exercise?
I. triglycerides
II. muscle glycogen
III. amino acids
IV. blood glucose
Respuesta
-
I and III only
-
II and III only
-
II and IV only
Pregunta 24
Pregunta
Dynamically pre-stretching a muscle is associated with which type of subsequent muscle action?
Respuesta
-
eccentric
-
concentric
-
isometric
Pregunta 25
Pregunta
Which is an indicator of anorexia nervosa?
Respuesta
-
a fear of becoming obese
-
frequent weight fluctuations
-
a binge-purge eating pattern
Pregunta 26
Pregunta
Which decreases as a result of resistance training and increases due to aerobic training?
Respuesta
-
mitochondrial density
-
glycogen stores
-
creatine phosphate stores
Pregunta 27
Pregunta
Performance decrements from dehydration among aerobic athletes may begin to occur after the loss of what percentage of body mass?
Respuesta
-
3
-
1
-
5
Pregunta 28
Pregunta
Which competitive situations would inspire an athlete with a high motive to achieve success (MAS)?
Respuesta
-
a challenging situation in which the probability of success to failure is even
-
an easy competition in which success is virtually guaranteed
-
a very difficult situation in which the likelihood of success is limited
Pregunta 29
Pregunta
Which is the most appropriate course of action if an eating disorder is suspected with an athlete?
Respuesta
-
Monitor the athlete's food intake.
-
Provide comprehensive nutrition information.
-
Refer the athlete to the team physician.
Pregunta 30
Pregunta
All are changes to collagen fibrils within a tendon in response to a resistance training program EXCEPT increased
Respuesta
-
decrease in cross section area
-
greater number of covalent cross-link with the hypertrophied fiber
-
increase in collagen fibril diameter
Pregunta 31
Pregunta
Which of the following events occurs during a concentric muscle action?
Respuesta
-
the H-zone decreases as the Z-discs are pulled toward each other
-
the actin cross-bridges attach to the myosin filaments
-
each sarcomere is stimulated by a motor neuron
Pregunta 32
Pregunta
All are potential indicators of overtraining EXCEPT::
Respuesta
-
increased resting blood pressure
-
decreased exercise heart rate
-
decreased muscle glycogen stores
Pregunta 33
Pregunta
When lifting maximal loads, the use of a weight belt may provide the greatest benefits when performing which of the following exercises?
Respuesta
-
front squat
-
bench press
-
machine shoulder press
Pregunta 34
Pregunta
A 6'2" (188 cm), 220 Ib (100 kg) college football player desires to gain muscle weight. Which of the following should be his first nutritional priority if his current 3000 kcal/day intake consists of 18% protein (1.4 g/kg), 55% carbohydrate (4.1g/kg), and 27% fat (0.9g/kg)?
Respuesta
-
decrease fat
-
increase protein
-
increase kcals
Pregunta 35
Pregunta
During a single aerobic exercise session, oxygen is delivered to the working muscles at an elevated rate due to an increase in:
Respuesta
-
cardiac output.
-
total blood hemoglobin.
-
blood glucose.
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