AND ANSWERS SURE A+
✔✔During a free weight exercise, muscle force varies with which of the following?
1. perpendicular distance from the weight to the body joint
2. joint angle
3. movement acceleration
4. movement velocity squared
a. 1 and 2 only
b. 1 and 4 only
c. 1, 2, and 3 only
d. 2, 3, and 4 only - ✔✔a. 1 and 2 only (perpendicular distance from the weight to the
body joint AND joint angle)
✔✔A vertical jump involves knee, hip, and shoulder movement primarily in which of the
following anatomical planes?
sagittal
perpendicular
frontal
transverse - ✔✔sagittal
,✔✔An athlete is performing a concentric isokinetic elbow flexion and extension
exercise. Which of the following type(s) of lever occur(s) at the elbow during this
exercise?
1. 1st class
2. 2nd class
3. 3rd class
a. 1 only
b. 2 only
c. 1 and 3 only
d. 2 and 3 only - ✔✔c. 1 and 3 only
✔✔Which of the following substances can be metabolized anaerobically?
glycerol
glucose
amino acids
free fatty acids - ✔✔glucose
✔✔Which of the following reactions is the primary cause of metabolic acidosis
(decrease in intramuscular pH during high-intensity, fatiguing exercise)?
ATP = ADP + Pi + H+
pyruvate + NADH = lactate + NAD+
ADP + creatine phosphate = ATP + creatine
fructose-6-phosphate = fructose-1,6-biphosphate - ✔✔ATP = ADP + Pi + H+
✔✔Which of the following energy systems produces ATP at the quickest rate?
phosphagen
aerobic glycolysis
fat oxidation
fast glycolysis - ✔✔phosphagen
✔✔Approximately how many net ATP are produced via the oxidative energy system
from the metabolism of one molecule?
27
34
38
41 - ✔✔38
✔✔Which of the following energy substrates cannot be depleted during extreme
exercise intensities or durations?
, creatine phosphate
glycogen
water
ATP - ✔✔ATP
✔✔After a bout of resistance training, acute hormonal secretions provide all of the
following information to the body EXCEPT
amount of physiological stress
metabolic demands of exercise
type of physiological stress
energy expended - ✔✔energy expended
✔✔Which of the following hormones enhance(s) muscle tissue growth?
1. growth hormone
2. cortisol
3. IGF-1
4. progesterone
a. 1 and 3 only
b. 2 and 4 only
c. 1, 2, and 3 only
d. 2, 3, and 4 only - ✔✔a. 1 and 3 only
✔✔Which of the following is NOT a function of growth hormone?
increase lipolysis
decrease collagen synthesis
increase amino acid transport
decrease glucose regulation - ✔✔decrease collagen synthesis
✔✔Which of the following hormones has the greatest influence on neural change?
growth hormone
testosterone
cortisol
IGF - ✔✔testosterone
✔✔What type of resistance training workout promotes the highest growth hormone
increases following the exercise session?
a. 30s rest, high volume, 3 sets
b. 30s rest, low volume, 1 set