Past questions Flashcards
Development of muscle force is controlled by:
a. Number of mitochondria surrounding a sarcomere
b. Movement of cross-bridges across the sarcomere
c. Frequency of motor neuron stimulation
d. The chemical activity of the periosteum
Frequency of motor neurone stimulation
Relaxation of a muscle fiber occurs when
a. Calcium is bound to troponin
b. Calcium is pumped into the sarcoplasmic reticulum
c. Cross-bridge heads are bound to actin filaments
d. All the ATP in the myofilament has been used
e. The transverse tubules are blocked by sodium ions
Calcium is pumped into the sarcoplasmic reticulum
A motor unit consists of
a. Actin and myosin filaments
b. All the motor neurons in a muscle
c. The neuromuscular junction and T-tubules
d. The neuromuscular junction and sarcoplasmic reticulum e. A motor neuron and all the muscle fibers it innervates
A motor neuron and all the muscle fibres it innervates
Eccentric strength occurs when
a. Sufficient tension is developed in a muscle to cause shortening
b. Tension is developed in a muscle but outside forces cause it to lengthen
c. Calcium is pumped into the sarcoplasmic reticulum
d. No movement occurs in the muscle
e. Troponin moves from the myofibril to the mitochondria
Tension is developed in the muscle, but outside forces cause it to lengthen
The maximum force capability of a muscle is inversely related to
a. The velocity of a concentric contraction
b. The angle of pennation
c. The cross-sectional size of a muscle
d. The size of the neuromuscular junction
e. The number of cross-bridges heads bound to actin
The velocity of a concentric contraction
Skeletal muscles fibres
a. Have multiple neuromuscular junctions
b. Normally are no longer than 1 cm in length
c. Have many nuclei situated on their surface
d. Are surrounded by periosteum
e. Are usually two sarcomeres in length
Have many nuclei situated on their surface
Increases in strength following resistance training
a. Are due to an increased number of muscle fibers
b. Reflect an increase in fiber size
c. Are relatively greater in males than females
Reflect an increased fibre size
During the first month after stopping resistance training
a. Strength declines modestly, if at all
b. The size of muscle fibers decreases to pre-training levels
c. Distribution of the two types of muscle fibers returns to pre-training levels
d. The aerobic enzyme content of skeletal muscle decreases
Strength declines modestly, if at all
Concurrent endurance and resistance training might
a. Increase sprint ability in a distance cyclist
b. Augment increases in aerobic power
c. Augment increases in muscle strength
d. Compromise increases in aerobic power
Increase sprint ability in a distance cyclist
Females, as compared to males
a. Show modest increases in muscle size after resistance training
b. Reflect increases in strength mainly attributed to neural factors
c. Show greater muscle fiber hyperplasia after resistance training
d. Show the same or greater relative hypertrophy after resistance training
Show the same or greater relative hypertrophy after resistance training
Which kind of joint is the knee?
Synovial
Most human limbs are operated as which class of lever?
a. First class
b. Second class
c. Third class
Third class
To compare performances of lifters of different body weights, the classical
formula divides the lift by
a. Body weight
b. Body weight squared
c. Body weight to the two-thirds power
d. Body weight to the three-fourths power
Body weight to the two-thirds power
During free-weight exercise, resistive torque varies with
a. The horizontal distance from the weight to the body joint
b. The vertical distance from the weight to the body joint
c. The movement velocity
d. The square of movement velocity
e. The inverse
The horizontal distance from the weight to the body joint
A vertical jump involves knee, hip and shoulder movement mainly in which plane?
a. Perpendicular
b. Orthogonal
c. Sagittal
d. Frontal
e. Transverse
Sagital
Compared to other athletes of various sizes and body builds, an athlete with a high strength-to- mass ratio should be able to
a. Lift more
b. Change direction more quickly
c. Throw farther
d. Hit harder
e. Absorb impact better
Change direction more quickly
Resistance exercise programs designed to stimulate new bone formation should emphasize all of the following except
a. Metabolic specificity
b. Specificity of loading
c. Progressive overload
d. Variation in exercise selection
Metabolic specificity
Which of the following exercises should most effectively stimulate new bone formation in the axial skeleton?
a. Squat
b. Leg extension
c. Bench press
d. Lat pull-down
Squat
Which of the following factors is least effective in creating an effective osteogenic stimulus?
a. Volume of exercise
b. Magnitude of the load
c. Rate of force application
d. Variation of exercise selection
Volume of exercise
Increases in type 2 muscle fibers diameter from training for strength are associated with increases in all of the following except
a. Phosphagen levels
b. Glycogen levels
c. Troglyceride levels
d. Myokinase
Triglyceride levels
Muscle size increases are caused by all of the following except
a. A higher proportion of type 2 fibers
b. A greater amount of intermuscular collagen fibers
c. An increase in diameter of type 1 fibers
d. Greater substrate stores
A higher proportion of type 2 fibres
Increases in the endurance capability of muscle tissue are caused by all of the
following except
a. Conversion of type 2b to type 1a fibers
b. Hypertrophy of type 1 fibers
c. Greater myoglobin content
d. Conversion of type 2 to type 1 fibers
Conversion of type 2 to type 1 fibres
Which of the following is the connective tissue support cell found in cartilage?
a. Chondrocyte
b. Osteoblast
c. Fibroblast
d. Myocyte
Chondrocyte
Which of the following is not a specific change that occurs within tendons or ligaments in response to chronic resistance exercise training?
a. a switch from type 2 to type 1 collagen
b. an increase in collagen fibril diameter
c. an increase in collagen fibril packing density
d. an increase in covalent cross-links present in collagen fibrils
A switch from tope 2 to type 1 fibres
Which tissue has the poorest blood supply?
a. Cartilage
b. Bone
c. Muscle
d. T endon
Cartilage
The ultimate source of energy for muscular contraction is a. GTP
b. Oxygen
c. NADH
d. ATP
ATP
Which of the following can be metabolized anaerobically? a. Protein
b. Carbohydrate
c. Fat
d. All of the above
CHO
Which energy system is used depends primarily on
a. Exercise intensity
b. Exercise duration
c. State of training
d. Body composition
Exercise intensity
The activation of ______ results in the production of lactic acid
a. The phosphagen system
b. Slow glycolysis
c. Fast glycolysis
d. The oxidation of carbohydrates
Fast glycolysis
Which of the following has the highest rate of energy production?
a. The phosphagen system
b. Fast glycolysis
c. Oxidation of fats
d. Oxidation of carbohydrates
The phosphagen system
The oxidative system results in the production of approximately _______ ATP’s
from the degregation of 1 glucose molecule
a. 36
b. 27
c. 41
d. 38
38
Which enzyme catalyzes the rate-limiting step of glycolysis?
a. PFK
b. Isocitrate dehyrogenase
c. Phosphorylate
d. Lactate dehydrogenase
PFK
Which of the following hormones enhance muscle tissue growth?
a. Growth hormone and IGF-I only
b. Growth hormone and Progesterone only
c. Growth hormone, cortisol and IGF-I only
d. Growth Hormone, Cortisol and Progesterone only
GH and IGF-1 only
Which hormone has the greatest influence on changes in nerves?
a. Growth hormone
b. T estosterone
c. Cortisol
d. IGF
Testosterone
Which hormone is higher is women than men at rest?
a. Cortisol
b. Insulin
c. T estosterone
d. Growth hormone
GH
What type of workout promotes the highest growth hormone increases following
the exercise session?
a. Short rest (1min), high volume, multiple sets
b. Single set, low volume
c. Sets of 5RM
d. Long rest (3min), low volume, multiple sets
Short rest (1 min), high volume, multiple sets
The contracting left ventricle pushes blood through
a. The tricuspid valve into the pulmonary circulation
b. The mitral valve into the peripheral circulation
c. The aortic valve into the peripheral circulation
d. The aortic valve into the pulmonary circulation
The aortic valve into the peripheral circulation
Normal responses to exercise include the following expect
a. Mean arterial pressure rise
b. Stroke volume increase
c. Systolic blood pressure response similar to heart rate
d. Diastolic blood pressure rise
Diastolic blood pressure rise
Which of the following is not a component of oxygen uptake?
a. Heart rate
b. Systolic blood pressure
c. Stroke volume
d. arteriovenous oxygen difference
Stroke volume
A muscle that gets totally depleted of its ATP will become stiff because Select one:
a. The Myosin heads cannot swivel and deliver their powerstroke
b. The myosin heads cannot detach from the actin
c. The Myosin heads sequester calcium ions reducing calcium availability to other myofibrils
The myosin heads cannot detach from the actin
The epimysium and periosteum are structurally connected why? Select one:
a. To provide a seamless connection between the muscle and the bone
b. To allow space for muscle fibre hypertrophy
c. To prevent kinetic energy loss
d. To help prevent tendonitis
To provide a seamless connection between the muscle and the bone
What does “stacking” involve in regards to administering anabolic steroids? Select one:
a. Taking one anabolic steroid, then the next day taking a new steroid
b. Combining two anabolic steroids in one dose and then adding an antagonistic
steroid
mixture the next day
c. Taking many anabolic steroids together
Taking as many anabolic steroids together
Which of the following muscle fibre types are “bypassed” as a result of selective recruitment that allows an Olympic weightlifter to generate maximum power during a 1RM snatch? Select one: a. IIx b. I c. IIa d. IIc
I
What trunk muscles are involved in performing an abdominal crunch with a twist? (Tick all that apply) Select one or more: a. Tensor Fasciae Latae d. Osteoblasts e. External oblique f. Pectineus g. Semitendinosus h. Piriformus i. Gluteus Maximus j. Internal oblique
External oblique
Internal oblique
How many hours after GH release is IGF-I peak seen to occur Select one:
a. 16-28hrs
b. 26-46hrs
c. 6-18hrs
26-46hrs
Golgi tendon organ function is to Select one:
a. Protect the muscle by stimulating reflex inhibition of the motor neuron
b. To cause muscle contraction in response to increased muscle loading
c. To enhance acetylcholine production in response to an increased muscle
loading
d. To provide afferent signals to increase heart rate
Protect the muscle by stimulating reflex inhibition of the motor neuron
Which component of an integrated sports performance program is concerned with improving the rate of force production? Select one: a. Plyometric training b. Cardiorespiratory training c. Balance training d. Core training
Plyometric training
All of the following are examples of progressively overloading the body through resistance training except:
Select one:
a. Using forced repetitions during an exercise session
b. Adding reps to a workout session
c. Increasing the velocity of the exercise to be performed
d. Increasing the rest time between sets with standard loading
Increasing the rest time between sets with standard loading
Which of the following best explains the requirement for increased protein intake by athletes? Select one:
a. The quality of protein consumed
b. Restriction of calories to lose weight
c. Increased need for tissue repair
d. Decreased protein oxidation during aerobic exercise
Increased tissue repair
A blunted training response to IGF-I concentration has been seen in which athletes? Select one:
a. those with an initially high resting level of IGF-I
b. those with high concentrations of Acetylcholine
c. those with high concentrations of ACTH
Those with an initially high resting level of IGF-1
Strength and conditioning facility _________ are important for offering to participants guidelines on equipment and facility use and personal conduct
a. Goals and objectives
b. Rules and policies
c. Cleaning and maintenance
d. Organization and administration
Rules and policies
Without _____, the program goal(s) may not be achieved
a. Objectives
b. Competition
c. Performance
d. New equipment
Objectives
Effective organization and efficient administration of a strength and conditioning program require of the co-ordinator skill in
a. Supervision
b. Co-operation
c. Observation
d. Instruction
Supervision
Which of the following are the major goals of a strength and conditioning program?
a. Improving performance and lowering the potential for injury
b. Providing a safe and orderly environment
c. Producing winning teams and developing an individual’s potential
d. Improving participation and attracting recruits
Improving performance and lowering potential for injury
During a short competitive period (1-3 weeks), the goal of training should be
a. Active rest
b. Maintenance of fitness
c. Development of strength
d. Development of endurance
Active rest
Volume of training during the hypertrophy phase of the preparatory period is
a. Moderate
b. Low
c. Low to moderate
d. High
High
he macrocycle is generally
a. One year of training
b. Part of a year of training
c. A week of training
d. A day’s training
One year of training
Periodization was first developed by a. Stone
b. Selye
c. Matveyev
d. O’Bryant
Matveyev
When utilizing multiple-joint exercise training, frequency should be ____________ single-joint exercises
a. Lower than
b. Greater than
c. The same as
d. Decreased one week and increased the next compared to
Lower than
In order to maintain muscle strength in an exercise, you need to engage in the exercise at least
a. 2 days/week
b. 1 day/week
c. 3 days/week
d. 4 days/week
3 days/week
Athletes returning to training after prolonged periods of detraining should begin by resting _____ usual between sets of exercise
a. Less than
b. The same as
c. More often than
d. Longer than
Longer than
Traditional circuit weight training has a work-rest ratio of approximately
a. 1:2
b. 2:1
c. 1:1
d. 3:1
1:2
A high jumper performing sets of three reps with 90% of hit 1RM capacity in strength training exercises should rest ______ min between sets
a. 1-2
b. 3-5
c. 7-9
d. 10-15
3-5 mins
To replenish phosphagen stores, rest between sets should last
a. 3min
b. 1min
c. 30s
d. 6min
1min
Volume of training decreases
a. During the hypertrophy/endurance phase of the preparatory period
b. For athletes whose events require high levels of aerobic endurance with low levels of strength and power
c. As the competition period approaches
d. With younger athletes
As the competition period approaches