A motor unit is best defined as which of the following?
Anatomy And Physiology
Question · Easy
Week 1 vs week 12
Short
Which contractile protein contains the binding sites that myosin heads attach to during a muscle contraction?
Question · Medium
During the sliding-filament theory of contraction, what directly triggers the release of calcium from the sarcoplasmic reticulum?
According to Henneman's size principle, motor units are recruited in what order during a gradually increasing force task?
Which muscle fiber type is most fatigue-resistant and best suited for prolonged, low-intensity endurance activity?
Your resolution vs a SMART objective
The phosphagen (ATP-PC) energy system is the predominant energy source for an effort lasting approximately how long?
Which energy system produces the greatest total ATP yield but at the slowest rate?
Phosphocreatine contributes to rapid ATP resynthesis through which enzyme-driven reaction?
Question · Hard
Which structure detects changes in muscle length and rate of length change, triggering the stretch (myotatic) reflex?
The Golgi tendon organ (GTO) responds to high muscle tension by doing what?
Bone tissue adapts to mechanical loading according to which principle?
Which type of synovial joint allows the greatest range of motion in multiple planes, as seen at the shoulder and hip?
During heavy resistance exercise, the acute cardiovascular response typically includes which of the following?
What is the primary role of hemoglobin during exercise?
VO2 max is best described as which of the following?
Which hormone is most associated with anabolic muscle protein synthesis and is acutely elevated by heavy, multi-joint resistance training?
The functional contractile unit of skeletal muscle, spanning from one Z-line to the next, is called the:
Which fuel source predominates during very low-intensity, prolonged steady-state activity such as walking?
Excess post-exercise oxygen consumption (EPOC) primarily reflects which physiological process?
Which statement about the cardiorespiratory response to chronic aerobic training is correct?
Which plane of motion divides the body into front and back halves, and contains movements like abduction and adduction?
Biomechanics
In a standing biceps curl, the elbow flexors act as which type of contraction while lowering the dumbbell under control?
The force-velocity relationship of muscle states that as the velocity of a concentric contraction increases, the maximal force the muscle can produce:
A lever in which the muscle force and resistance are on the same side of the fulcrum, such as the calf raising the body at the ankle, is which class of lever?
Most movements in the human body operate as third-class levers, which are characterized by:
Torque (moment of force) about a joint is the product of the force and which other factor?
Why does a barbell back squat become hardest near the bottom position for many lifters?
The stretch-shortening cycle (SSC) enhances power output primarily because of what mechanism during the rapid eccentric phase?
A coach changes a cable's pulley height to keep tension challenging at the hardest joint angle. This is an application of which biomechanical concept?
Center of gravity in a standing human is generally located near which region, and why does it matter for lifting?
Before beginning a strength and conditioning program, the FIRST step in athlete screening should typically be:
Assessment
Which field test is most commonly used to estimate lower-body power?
The 1-repetition maximum (1RM) test is the gold-standard assessment for which fitness component?
Using the Epley formula, a lifter who completes 5 reps with 100 kg has an estimated 1RM closest to which value?
Which assessment best evaluates an athlete's ability to rapidly change direction?
When ordering a battery of performance tests in a single session, which sequence is generally recommended?
An assessment that consistently produces the same result on repeated trials under the same conditions is described as having high:
A vertical jump test result is converted to peak power using the Sayers equation. This is an example of:
For general athletic populations, which body-composition method is a practical field estimate but less accurate than laboratory hydrostatic weighing or DXA?
A baseline assessment battery is most valuable to a strength coach primarily because it:
The SAID principle stands for which of the following?
Program Design And Periodization
Selye's General Adaptation Syndrome (GAS) describes which three sequential phases in response to a training stressor?
Progressive overload means that to continue adapting, the training stimulus must be:
In classic linear periodization for a strength-power athlete, training volume and intensity typically progress in which manner across the macrocycle?
Undulating (nonlinear) periodization differs from linear periodization mainly because it:
In a periodization model, the largest planning unit that often spans an entire training year or season is called the:
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