On the force-velocity curve of skeletal muscle, what happens to the force a muscle can produce as the velocity of concentric shortening increases?
Functional Anatomy And Biomechanics
Question · Medium
Week 1 vs week 12
Short
Rate of force development (RFD) is best defined as which of the following?
A muscle that lengthens while contracting to control a load is performing which type of action?
Question · Easy
The stretch-shortening cycle (SSC) enhances concentric power primarily through which combination of mechanisms?
Which muscle fiber type is characterized by high oxidative capacity, fatigue resistance, and a low rate of force development?
According to Henneman's size principle, motor units are typically recruited in what order during a graded contraction?
A muscle's force production is greatest when the sarcomere is at which length, based on the length-tension relationship?
In the back squat, the hip extensors and knee extensors work to overcome a resistance that creates flexion torque. What lever and resistance characteristic most increases the demand on these muscles as the lifter descends?
Question · Hard
Which of the following best describes a second-class lever in the human body, exemplified by plantarflexion during a calf raise?
The Golgi tendon organ (GTO) responds primarily to which stimulus and produces what reflex effect?
Which scenario describes a muscle acting as an antagonist?
Pennate muscle architecture, compared with a fusiform arrangement of equal volume, generally provides which advantage?
During the flight phase of sprinting, the hamstrings function eccentrically to perform which action?
Newton's second law, applied to athletic performance, is most accurately expressed as which relationship?
Mechanical power output in a vertical jump is best described as which product?
Which energy system regenerates ATP most rapidly but has the smallest total capacity, dominating efforts lasting roughly 1-10 seconds?
Sport Metabolism
During a maximal 400-meter sprint lasting about 45-55 seconds, which energy system contributes the largest share of ATP?
Which statement about lactate during high-intensity exercise is most accurate?
Excess post-exercise oxygen consumption (EPOC) primarily reflects which physiological processes after intense exercise?
As exercise intensity rises from rest toward maximal, the relative contribution of fat versus carbohydrate as fuel generally shifts in which direction?
Which adaptation is a hallmark of chronic aerobic endurance training that improves oxygen utilization?
The aerobic (oxidative) system can use which substrates to resynthesize ATP?
Repeated near-maximal sprint efforts with short rest intervals will most rapidly deplete which substrate, limiting subsequent sprint quality?
The lactate threshold is best defined as which of the following?
A primary purpose of conducting a needs analysis before designing a strength and conditioning program is to do which of the following?
Performance Assessment And Evaluation
When selecting a battery of performance tests for an athlete, the order of testing should generally follow which sequence to preserve data quality?
A vertical jump test is most appropriate for assessing which athletic quality?
Using the Epley equation, an athlete who lifts 100 kg for 5 repetitions has an estimated one-repetition maximum (1RM) closest to which value?
For a test to be considered reliable, it must demonstrate which property?
The pro-agility (5-10-5) test is primarily used to evaluate which quality?
When assessing maximal speed, why is a flying-start sprint segment often used rather than timing from a stationary start?
Which of the following is the most appropriate first step when interpreting an athlete's test battery results?
Skinfold measurements are most commonly used to estimate which athlete characteristic?
A coach wants the most ecologically valid measure of an athlete's readiness to perform sport-specific power. Which approach is generally preferred?
In a graded exercise test, the attainment of a plateau in oxygen uptake despite increasing workload indicates which measure has been reached?
Why does muscle protein synthesis require an adequate dietary protein intake distributed across the day for athletes?
Nutrition And Ergogenic Aids
Carbohydrate is an especially important fuel for athletes primarily because it does which of the following?
Which ergogenic aid has strong evidence for improving short-duration, high-intensity and repeated-sprint performance by increasing muscle phosphocreatine availability?
Following glycogen-depleting exercise, the most effective practice to accelerate muscle glycogen resynthesis is to do which of the following?
Which statement about hydration and athletic performance is most accurate?
Caffeine's ergogenic effect on endurance and high-intensity performance is primarily attributed to which mechanism?
An athlete asks the strength coach to design a specific clinical meal plan to treat a diagnosed eating disorder. The most appropriate action is to do which of the following?
Carbohydrate loading is a strategy primarily intended to benefit which type of athlete?
The principle of specificity (SAID principle) in athletic training states that adaptations will primarily occur in response to which of the following?
Training Techniques For Athletic Performance
To maximize maximal strength development in a well-trained athlete, which loading prescription is most appropriate?
During the second pull of the power clean, the athlete should emphasize which action to maximize bar velocity?
A defining feature of plyometric training that distinguishes it from standard resistance exercise is its emphasis on which of the following?
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