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Fragen in diesem Quiz (55)
1which of the following substances acts at the NMJ to excite the muscle fibers of the motor unit?
- Aacetylcholine
- Bcreatine
- CATP
2a college volleyball player begins resistance training for the first time. what muscle fiber types will hypertrophy first?
- Afast twitch
- Bslow twitch
- Cmuscle spindle
3a 22 yr old soccer player begins resistance training for the first time. his chosen exercises include those for all major muscle groups. after 3 weeks, he notices an increase in lower extremity strength. which of the following best explains this athletes
- Aimproved motor control
- Bincreased hypertrophy
- Cincrease cross section area
4which of the following results from adding resistance training to a marathoners aerobic exercise training program?
- Ashort-term endurance may improve
- Bmax o2 uptake increases
- Cmax o2 uptake decreases
5a bundle of muscle fibers is called
- Afasiculus
- Bmotor unit
- Ctetanus
6to which of the following structures do the cross-bridges attach during muscle action?
- Aactin
- Bmyosin
- Cm- bridge
7which of the following substances regulates muscle actions?
- Acalcium
- Bpotassium
- Cphosphorus
8which of the following best describes what occurs during a concentric muscle action?
- Aresistance is greater than muscle force
- Bresistance is equal to muscle force
- Cresistance is less than muscle force
9which of the following will increase force produced during a concentric muscle action?
- Aagonist prestretching
- Bmore calcium released in the myofibril
- Cboth of these
10the knee joint can be described as
- Asynovial
- Bcartilaginous
- Cmultiaxial
11which of the following defines power?
- Aforce * velocity
- Bmass * acceleration
- Cforce * distance
12to compare performances of lifters of different body weights, the classical formula divides
- Abody weight to the 2/3 power
- Bthe lift by body weight
- Cbody weight squared
13a vertical jump involves knee, hip, and shoulder movement in primarily which plane?
- Asagittal
- Bfrontal
- Ctransverse
14a person is performing a concentric isokinetic elbow flexion and extension exercise. which of the following types of levers occur at the elbow during this exercise?
- Afirst class and third class
- Bsecond class and third class
- Cfirst class and second class
15resistance exercise programs designed to stimulate new bone formation should emphasize all of the following EXCEPT
- Avariation in exercise selection
- Bprogressive overload
- Cmetabolic specificity
16a 17 year old HS cross country runner has been training aerobically for 6 months in preparation for the upcoming season. which of the following adaptations will occur in the muscles during that time?
- Aincreased concentration of glycolytic enzymes
- Bhypertrophy of type I fibers
- Cincreased type II fibers
17which of the following is NOT a primary function of cartilage?
- Aaids in the attachment of muscle to bone
- Bconnects bones together
- Cimproves shock absorption in joints
18which of the following occurs as a result of a combination of heavy resistance training and aerobic training?
- Aincreased cartilage thickness
- Bdecreased cartilage thickness
- Cjoint degeneration
19in general, which of the following types of tissue has the poorest blood supply?
- Acartilage
- Btendon
- Cmuscle
20which of the following is the ultimate source of energy for contraction?
- AATP
- BNADH
- CO2
21which of the following can be metabolized anaerobically?
- Acarbohydrate
- Bfat
- Cprotein
22the energy system used depends primarily on the athlete's
- Aexercise intensity
- Bexercise duration
- Cbody composition
23the production of lactic acid results from the activation of
- Afast glycolysis
- Bthe phosphagen system
- Cfat oxidation
24which of the following pathways/systems has the highest rate of energy production?
- Aphosphagen system
- Bfat oxidation
- Cfast glycolysis
25in the oxidative system approximately how many ATPs are produced from the degradation of 1 glucose molecule?
- A38
- B41
- C36
26which of the following pathways/systems supports the initiation of all exercise?
- Aphosphagen system
- Bfast glycolysis
- Cslow glycolysis
27which of the following enzymes catalyzes the rate limiting step of glycolysis?
- APFK
- Blactate dehydrogenase
- Cphosphorylase
28following a bout of resistance exercise training, acute hormonal secretions provide all the following information to the body EXCEPT the
- Aamount of physiological stress
- Bmetabolic demands of exercise
- Ctype of physiological stress
29which of the following hormones enhance muscle tissue growth
- Agrowth hormone
- Bcortisol
- Cboth of these
30growth hormone provides all of the following physiological roles EXCEPT
- Adecreased collagen synthesis
- Bincreased lipolysis
- C increased amino acid transport
31which of the following hormones has the greatest influence on neural changes?
- Atestosterone
- BIGF
- Cgrowth hormone
32through which of the following valves does blood flow after contraction of the left ventricle?
- Aaortic
- Bpulmonary
- Cmitral (bicuspid)
33which of the following occurs during the QRS complex of a typical ECG?
- Arepolarization of the ventricle
- Brepolarization of the atrium
- Cdepolarization of the atrium
34in what portion of the lungs does gas exchange occur?
- Aalveoli
- Btrachea
- Cbronchus
35the amount of blood ejected from the left ventricle during each beat is the
- Astroke volume
- Ba-vo2 difference
- Ccardiac output
36all of the following normally increase during aerobic exercise EXCEPT:
- Adiastolic blood pressure
- Bcardiac output
- Cend diastolic volume
37which of the following best describes the change in stroke volume during heavy resistance exercise?
- Astays the same
- Bincreases
- Cincreases, then plateuas
38the mean arterial pressure is defines as:
- Aaverage blood pressure throughout the cardiac cycle
- Baverage of systolic and diastolic blood pressures
- Caverage systolic blood pressure during exercise
39high intensity, low repetition resistance training results in which of the following adaptations?
- Adecreased capillary density
- Bdecreased tidal volume
- Cno change in maximal o2 uptake
40which of the following is an early adjustment to acclimatizing to high altitude?
- Aincreased resting cardiac output
- Bdecreased tidal volume
- Cincreased stroke volume
41chronic training involving the fast
glycolysis energy system results in improved buffering of which of the following substances?- Ahydrogen ions
- Bblood lactate
- Cglycogen
42primary training adaptations of elite aerobically trained athletes include the following?
- Aincreased capillary density
- Bincreased running economy
- Cdecreased blood lactate concentration
43when males and females are compared relative to muscle cross- sectional area, it appears that the potential for force production is:
- Agreater in males
- Bgreater in females
- Cequal in males and females
44which of the following is the most significant adaptation to chronic resistance training in older adults?
- A increased muscle mass
- Bincreased cardiovascular fitness
- Cimproved blood lipid profile
45an 8 yr old boy has observed dramatic increases in his upper-body strength following 6 months of resistance training. which of the following is most likely to be responsible for this gain?
- Aincreased size of muscle
- Bincreased number of muscle fibers
- Cimproved neuromuscular functioning
46growth cartilage in children is located in all of the following locations EXCEPT:
- Athe diaphysis
- Bthe epiphyseal plate
- Capophyseal insertion
47all of the following are likely benifits of preadolescent resistance training EXCEPT increased:
- Amuscle hypertrophy
- Bbone density
- Cresistance to injury
48the condition characterized by a bone mineral density more than -2.5 SD below the young adult mean is called:
- Aosteoporosis
- Bosteopenia
- Csarcopenia
49deconditioned college female athletes who participate in sports such as basketball and soccer appear to be at increased risk for developing injuries to the:
- Aknee
- Bgrowth plate
- Cback
50an olympic weightlifter attempting a personal record is able to ignore the audience to concentrate solely on her performance. which of the following abilities is this athlete most likely using to perform the lift?
- Aselective attention
- Bsomatic anxiety
- Cselective attention
51prior to performing the long jump, an athlete reviews and concentrates on the technique required to jump as far as possible. which of the following strategies is the athlete using to prepare for the jump?
- Afocusing on task relevant cues
- Bstate anxiety
- CMAF
52which of the following is most important to achieving the ideal performance state?
- Apersonal control
- Bbroad focus on the activity and the environment
- Cfear of failure
53an athletes desire to perform to his/her potential is an example of:
- Aintrinsic motivation
- Bachievement motivation
- Cdissociation
54for the high school football team, if any player squats two times his bodyweight, his name is placed on the wall. this is an example of:
- Apositive punishment
- Bpositive reinforcement
- Cnegative reinforcement
55how does an athlete's amount, or latitude, of optimal arousal change with limited skill and ability of the activity?
- Ait decreases
- Bit increases
- Cit has no effect
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- Beschreibung
- ok
- Autor
- grayere
- Sprache
- English
- Aufrufe
- 97
- Schlagwörter
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