Studied by 8 people
Emily is able to flip a 500 pound tire, but can not deadlift 500 pounds. Which of the following statements best explains why?
A) The act of tire flipping creates a 3rd class lever, resulting in a mechanical advantage for Emily.
B) The act of tire flipping creates a 1st class lever, resulting in a mechanical advantage for Emily.
C) The act of tire flipping creates a 2nd class lever, resulting in a mechanical advantage for Emily.
C) The act of tire flipping creates a 2nd class lever, resulting in a mechanical advantage for Emily.
A 3rd class lever is characterized by
A) the resistance and muscle force located on opposite sides of the fulcrum
B) its ability to produce the largest force compared to other classes of lever
C) the moment arm of muscle force being longer than the moment arm of resistive force
D) the moment arm of muscle force being shorter than the moment arm of resistive force
D) the moment arm of muscle force being shorter than the moment arm of resistive force
Knee flexion uses which class of lever?
A) 2nd
B) 3rd
C)None
D) 1st
B) 3rd
The formula for Work is?
A) Work/Time
B) Speed/Velocity
C) Torque x Angular Displacement
D) Displacement x Force
D) Displacement x Force
A muscle that can slow down or stop the movement?
A) Friction
B) Concentric
C) Agonist
D) Antagonist
D) Antagonist
Which anatomical plane divides the body into left and right sections?
A) Perpendicular
B) Frontal
C) Transverse
D) Sagittal
D) Sagittal
Which lever has the fulcrum in the middle of the load and effort?
A) 1st class
B) None
C) 3rd class
D) 2nd class
A) 1st class
When a muscle shortens because the contractile force is greater than the resistive force, this muscle action is known as?
A) Concentric
B) Eccentric
C) Inertial force
D) Muscle force
A) Concentric
Which of the following is the resistive force encountered when one attempts to move an object while it is pressed against another object?
A) Inertia
B) Gravity
C) Obstruction
D) Friction
D) Friction
Which of the following is an example of a 1st class lever?
A) Tweezers
B) Wheelbarrow
C) A crow bar or car jack
D) A nutcracker
C) A crow bar or car jack
Which energy system exclusively uses the Kreb cycle to replenish ATP?
A) Glycolysis
B) Oxidative System
C) Phosphagen System
B) Oxidative System
The Krebs cycle occurs in which portion of the cell?
A) Mitochondria
B) Nucleus
C) Membrane
D) Cytoplasm
A) Mitochondria
Which of the following energy systems has the capacity to produce the east amount of ATP, but does so at a quick rate?
A) Phosphagen System
B) Oxidative Phosphorylation
C) Glycolysis
D) Beta oxidation
A) Phosphagen System
Depletion of muscle glycogen during recovery is related to post-exercise carbohydrates ingestion.
True
False
False
The extent to which each of the 3 energy systems contributes to ATP production depends primarily on the intensity of muscular activity and secondarily on the duration. At no time, during either exercise or rest, does any single energy system provide the complete supply of energy.
True
False
True
During aerobic/endurance-type that requires an athlete to maintain their highest level of performance for several hours, which of the following will contribute to fatigue the most?
A) Muscle glycogen
B) Fat stores
C) Creatine Phosphate
A) Muscle glycogen
The total of all the catabolic or exergonic and anabolic or endergonic reactions in a biological system
A) Bioenergetics
B) Anabolism
C) Catabolism
D) Metabolism
D) Metabolism
HITT when used in conjunction with other training sessions, may result in greater stress and risk of injury.
True
False
True
Two athletes are competing in upcoming competition, a weightlifting meet and a marathon. Which energy systems will each be primarily using respectively?
A) Oxidative & Glycolytic
B) Oxidative & Phosphagen
C) Glycolytic & Phosphagen
D) Phosphagen & Oxidative
D) Phosphagen & Oxidative
Selectively training energy systems that are used in your sport is defined as?
A) Metabolic Profiling
B) Metabolic Specificity
C) Energy system predominance
B) Metabolic Specificity
Some research suggests that females mount an acute increase in free testosterone but not total testosterone, following resistance training?
True
False
True
Which peptide hormone stimulates the release of IFG-1?
A) Growth Hormone
B) Testosterone
C) Insulin
A) Growth Hormone
Which of the following is a steroid hormone?
A) Cortisol
B) Growth Hormone
C) IFG-1
D) Insulin
A) Cortisol
Effects of low testosterone can include
A) can impact human growth hormones
B) impact emotional level
C) can increase libido (sex drive)
D) all of the above
B) impact emotional level
Which of the following intensity ranges would be most conductive to acute increases in testosterone levels during and immediately after a resistance training session?
A) 60-75% of 1RM
B) 80-95% of 1RM
C) 55-70% of 1RM
B) 80-95% of 1RM
Hormones are secreted _______ the resistance exercise bout due to the physiological stress of resistance exercise.
A) During
B) Before
C) After
D) All the above
D) All the above
Which answer does not represent testosterone role in building muscle?
A) decreases libido (sex drive)
B) Impacts fat distribution
C) enhances muscle mass creation
D) enhances strength development
A) decreases libido (sex drive)
Acute increases in ______ stimulate energy availability and suppress energy consuming processes.
A) IGF-1
B) Cortisol
C) Testosterone
B) Cortisol
For several weeks one of your athletes has been performing 2/day workouts at very high intensity. You notice that performance in the weight room has steadily declined over the last 2 weeks What may explain the decline in the athlete's performance?
A) The athlete is in chronic alarm phase by overactivation of adrenal cortex. The athlete has chronically elevated estrogen levels
B) The athlete is in chronic alarm phase characterized by overactivation of adrenal cortex. The athlete has chronically elevated cortisol levels
C) The athlete is in chronic adaptation phase characterized by overactivation of the adrenal medulla. The athlete has chronically elevated cortisol levels.
B) The athlete is in chronic alarm phase characterized by overactivation of adrenal cortex. The athlete has chronically elevated cortisol levels
Which of the following is NOT a role of cortisol?
A) Suppress protein synthesis
B) Promote gluconeogenesis
C) Promote lipolysis
D) Increase immune function
D) Increase immune function
Note 
Flashcard (21)