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NASM GFI practice questions

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Question 1Basic and Applied Sciences and Nutritional Concepts

During a steady-state group cycling class, which energy system supplies the majority of ATP for working muscles?

  1. Oxidative system Correct answer.
  2. Anaerobic alactate system
  3. Phosphagen system
  4. Fast glycolysis

Explanation

Steady-state aerobic work lasting several minutes depends mainly on the oxidative system, which uses carbohydrate and fat with oxygen to produce ATP at a sustainable rate. The phosphagen and glycolytic systems are fast but short-lived and dominate only brief, high-intensity efforts.

Question 2Basic and Applied Sciences and Nutritional Concepts

A new participant reports being able to talk in short sentences but not sing during a warm-up. Which cardiorespiratory training zone does this describe?

  1. Zone 2, aerobic base training Correct answer.
  2. Zone 4, anaerobic training
  3. Zone 3, threshold training
  4. Zone 1, recovery training

Explanation

The talk test is a practical marker of exercise intensity; the ability to speak in short sentences but not sing corresponds to moderate intensity, which maps to Zone 2 aerobic base work. Zone 1 recovery allows easy conversation, while higher zones make speech increasingly difficult.

Question 3Basic and Applied Sciences and Nutritional Concepts

Which structure connects muscle to bone and transmits the force generated by muscle contraction?

  1. Fascia
  2. Ligament
  3. Cartilage
  4. Tendon Correct answer.

Explanation

Tendons are dense connective tissues that attach muscle to bone and transmit contractile force to produce joint movement. Ligaments instead connect bone to bone, fascia surrounds and organizes tissues, and cartilage provides joint surface cushioning.

Question 4Basic and Applied Sciences and Nutritional Concepts

Which macronutrient provides 9 kcal per gram and is the most energy-dense?

  1. Fat Correct answer.
  2. Alcohol
  3. Carbohydrate
  4. Protein

Explanation

Fat yields about 9 kcal per gram, compared with roughly 4 kcal per gram for carbohydrate and protein. This energy density is why fat is the most concentrated of the three macronutrients.

Question 5Basic and Applied Sciences and Nutritional Concepts

During a calf stretch, which sensory receptor primarily detects tension at the muscle-tendon junction?

  1. Muscle spindle
  2. Ruffini ending
  3. Golgi tendon organ Correct answer.
  4. Pacinian corpuscle

Explanation

Golgi tendon organs sit at the muscle-tendon junction and detect tension. Their sensory input helps regulate muscle force and can contribute to reflexive relaxation through inhibition of the same muscle. This distinguishes tension detection from the muscle-length changes sensed by muscle spindles.

Question 6Basic and Applied Sciences and Nutritional Concepts

Which postural deviation is characterized by an anterior pelvic tilt and increased lumbar lordosis?

  1. Upper crossed syndrome
  2. Pes planus distortion syndrome
  3. Lower crossed syndrome Correct answer.
  4. Kyphosis

Explanation

Lower crossed syndrome involves an anterior pelvic tilt with tight hip flexors and lumbar extensors paired with weak gluteals and abdominals, increasing lumbar lordosis. Upper crossed syndrome affects the head, neck, and shoulders rather than the pelvis.

Question 7Basic and Applied Sciences and Nutritional Concepts

Which muscle group is the primary target when a participant performs a hip hinge exercise such as a Romanian deadlift?

  1. Quadriceps and hip flexors
  2. Hamstrings and gluteals Correct answer.
  3. Pectorals and anterior deltoids
  4. Gastrocnemius and soleus

Explanation

Hip hinge movements emphasize hip extension, which is produced primarily by the hamstrings and gluteus maximus. The quadriceps and hip flexors are more associated with squatting and hip flexion.

Question 8Basic and Applied Sciences and Nutritional Concepts

Which type of muscle action occurs when the biceps brachii lengthens while controlling the descent of a dumbbell curl?

  1. Concentric
  2. Eccentric Correct answer.
  3. Isometric
  4. Isokinetic

Explanation

An eccentric action occurs when a muscle produces force while lengthening, as when the biceps controls the lowering phase of a curl. Concentric actions involve shortening, isometric actions involve no change in length, and isokinetic actions occur at a constant speed.

Question 9Basic and Applied Sciences and Nutritional Concepts

A participant wants to improve muscular endurance during a group class. Which training variable should be emphasized?

  1. Explosive single repetitions
  2. Higher repetitions with lighter loads Correct answer.
  3. Long rest intervals between sets
  4. Maximal loads with low repetitions

Explanation

Muscular endurance is best developed with higher repetitions and lighter loads, which increase time under tension and metabolic demand. Heavy loads with low repetitions and long rests favor maximal strength and power instead.

Question 10Basic and Applied Sciences and Nutritional Concepts

Which of the following best describes the optimal length-tension relationship of a sarcomere?

  1. Maximal force is produced when the sarcomere is fully shortened
  2. Maximal force is produced when the sarcomere is fully stretched
  3. Maximal force is produced when actin filaments overlap completely
  4. Maximal force is produced when there is optimal overlap between actin and myosin filaments Correct answer.

Explanation

Force output depends on the number of cross-bridges that can form between actin and myosin. Optimal overlap allows the greatest number of cross-bridges, whereas excessive shortening or stretching reduces available binding sites and lowers force.

Question 11Basic and Applied Sciences and Nutritional Concepts

Which assessment is most appropriate for estimating a participant's cardiorespiratory fitness in a group setting?

  1. Sit-and-reach test
  2. Push-up test
  3. YMCA 3-minute step test Correct answer.
  4. Overhead squat assessment

Explanation

The YMCA 3-minute step test uses a submaximal stepping protocol and post-exercise heart rate to estimate cardiorespiratory fitness. The other tests assess movement quality, muscular endurance, or flexibility rather than aerobic capacity.

Question 12Basic and Applied Sciences and Nutritional Concepts

During a squat, a participant's knees move inward. Which muscle is most likely underactive?

  1. Gastrocnemius
  2. Gluteus medius Correct answer.
  3. Adductor complex
  4. Tensor fasciae latae

Explanation

Knee valgus during a squat often reflects insufficient hip abductor and external rotator strength, particularly the gluteus medius. Overactivity of the adductors and tensor fasciae latae can also contribute to inward knee motion.

Question 13Basic and Applied Sciences and Nutritional Concepts

Which dietary strategy best supports muscle protein synthesis following a resistance training session?

  1. Consuming 20-40 grams of high-quality protein Correct answer.
  2. Consuming a high-fat meal with no protein
  3. Fasting for several hours after training
  4. Consuming only simple carbohydrates

Explanation

Post-exercise protein intake of roughly 20-40 grams of high-quality protein provides essential amino acids and leucine to stimulate muscle protein synthesis. Carbohydrate supports glycogen replenishment but does not by itself provide the amino acids needed for repair.

Question 14Basic and Applied Sciences and Nutritional Concepts

Which principle explains why a training program must progressively increase demands to continue producing adaptation?

  1. Individuality
  2. Specificity
  3. Progressive overload Correct answer.
  4. Reversibility

Explanation

Progressive overload states that the body adapts only when training stress gradually exceeds current capacity. Without increasing demand, adaptation plateaus and may reverse.

Question 15Basic and Applied Sciences and Nutritional Concepts

A participant experiences dizziness and nausea during a high-intensity interval class. What is the most appropriate immediate response?

  1. Increase the intensity to improve conditioning
  2. Encourage the participant to push through the interval
  3. Have the participant continue with breath-holding
  4. Stop the activity, have the participant sit or lie down, and monitor them Correct answer.

Explanation

Dizziness and nausea can signal exertional heat illness, hypotension, or other medical concern, so the safe response is to stop activity and monitor the participant. Pushing through symptoms or increasing intensity raises the risk of syncope or more serious harm.

Question 16Basic and Applied Sciences and Nutritional Concepts

Which type of joint allows motion in all three planes and is exemplified by the shoulder?

  1. Hinge joint
  2. Saddle joint
  3. Pivot joint
  4. Ball-and-socket joint Correct answer.

Explanation

Ball-and-socket joints, such as the shoulder and hip, permit movement in all three planes, including flexion, extension, abduction, rotation, and circumduction. Hinge, saddle, and pivot joints allow more limited motion.

Question 17Basic and Applied Sciences and Nutritional Concepts

Which adaptation is most associated with chronic aerobic training?

  1. Hypertrophy of fast-twitch fibers
  2. Reduced blood volume
  3. Decreased mitochondrial density
  4. Increased stroke volume and capillary density Correct answer.

Explanation

Regular aerobic training increases stroke volume, blood volume, capillary density, and mitochondrial content, improving oxygen delivery and use. Fast-twitch hypertrophy is more characteristic of heavy resistance training.

Question 18Basic and Applied Sciences and Nutritional Concepts

Which muscle acts as a primary mover during shoulder abduction?

  1. Latissimus dorsi
  2. Pectoralis major
  3. Middle deltoid Correct answer.
  4. Biceps brachii

Explanation

The middle deltoid is a primary abductor of the shoulder, working with the supraspinatus to lift the arm laterally. The pectoralis major and latissimus dorsi are adductors and extensors, and the biceps brachii flexes the elbow and assists shoulder flexion.

Question 19Basic and Applied Sciences and Nutritional Concepts

A participant reports knee pain that increases with squats and stairs. Which recommendation is most appropriate for a group fitness instructor?

  1. Modify the exercise and refer the participant to a qualified healthcare professional Correct answer.
  2. Recommend a dietary supplement to resolve the pain
  3. Diagnose the cause and prescribe a corrective program
  4. Tell the participant to ignore the pain and continue

Explanation

Group fitness instructors are not licensed to diagnose or treat pain, so the appropriate action is to modify or avoid aggravating movements and refer the participant to a healthcare professional. Prescribing corrective or supplement protocols exceeds the scope of practice.

Question 20Basic and Applied Sciences and Nutritional Concepts

Which postural distortion involves a forward head and rounded shoulders?

  1. Ankle dorsiflexion restriction
  2. Upper crossed syndrome Correct answer.
  3. Lower crossed syndrome
  4. Pronation distortion syndrome

Explanation

Upper crossed syndrome describes forward head posture and rounded shoulders, often with tight upper trapezius and pectorals and weak deep neck flexors and lower trapezius. Lower crossed syndrome involves the pelvis and lumbar spine.

Question 21Basic and Applied Sciences and Nutritional Concepts

A participant with hypertension begins a class. Which training modification is most consistent with safe practice?

  1. Have the participant skip the warm-up
  2. Avoid prolonged breath-holding during resistance exercises Correct answer.
  3. Use heavy loads with the Valsalva maneuver
  4. Encourage maximal isometric holds to build strength

Explanation

Breath-holding during resistance exercise raises intrathoracic pressure and blood pressure, so participants with hypertension should be coached to breathe continuously. Heavy loads combined with the Valsalva maneuver and skipping warm-up increase cardiovascular risk.

Question 22Basic and Applied Sciences and Nutritional Concepts

Which sequence best reflects the typical stages of the general adaptation syndrome applied to training?

  1. Overload, plateau, detraining
  2. Warm-up, conditioning, cool-down
  3. Specificity, variation, recovery
  4. Alarm, resistance, exhaustion Correct answer.

Explanation

The general adaptation syndrome describes an alarm reaction to a stressor, a resistance phase of adaptation, and exhaustion if the stress persists without adequate recovery. Applying this model to training highlights the need for recovery to avoid overtraining.

Question 23Basic and Applied Sciences and Nutritional Concepts

A participant performs a bench press with a heavy load, and their lower back arches off the bench. Which cue best addresses this compensation?

  1. Reduce the load and cue bracing with the feet planted and spine neutral Correct answer.
  2. Increase the load to challenge the core
  3. Elevate the hips further off the bench
  4. Cue the participant to hold their breath throughout

Explanation

Excessive lumbar extension during a bench press often reflects a load that is too heavy or insufficient core control. Reducing the load and cueing a braced, neutral spine with feet planted addresses the compensation without increasing risk.

Question 24Basic and Applied Sciences and Nutritional Concepts

Which statement best explains why the oxidative system is limited during maximal-intensity sprinting?

  1. Oxygen delivery and mitochondrial processing cannot meet the rapid ATP demand Correct answer.
  2. Fat oxidation is the only pathway available during sprinting
  3. The oxidative system requires no oxygen and cannot produce ATP quickly
  4. The phosphagen system blocks oxidative phosphorylation

Explanation

At maximal intensity, ATP demand outpaces the rate at which oxygen can be delivered and used by mitochondria. The oxidative system has high capacity but relatively slow kinetics, so the phosphagen and glycolytic systems dominate short sprints.

Question 25Basic and Applied Sciences and Nutritional Concepts

A participant reports following a vegan diet and asks how to support protein intake. Which recommendation is most appropriate?

  1. Consume only simple carbohydrates before training
  2. Rely solely on fruit for protein
  3. Eliminate all protein sources to reduce intake
  4. Combine complementary plant proteins such as legumes and grains across the day Correct answer.

Explanation

Plant-based diets can meet protein needs when varied sources such as legumes, grains, soy, and nuts are combined across the day to provide a complete essential amino acid profile. Relying on fruit or simple carbohydrates alone would not supply adequate protein.

Question 26Basic and Applied Sciences and Nutritional Concepts

Which energy system is the primary contributor during a 30-second maximal-effort sprint?

  1. Aerobic system
  2. Glycolytic system Correct answer.
  3. ATP-PC system
  4. Oxidative system

Explanation

The glycolytic system dominates during high-intensity efforts lasting roughly 20 to 60 seconds, breaking down glucose to produce ATP quickly. The ATP-PC system is depleted within about 10 seconds, while the oxidative system contributes more as duration increases.

Question 27Basic and Applied Sciences and Nutritional Concepts

Which macronutrient provides the most concentrated source of energy per gram?

  1. Alcohol
  2. Protein
  3. Carbohydrate
  4. Fat Correct answer.

Explanation

Fat yields approximately 9 kcal per gram, compared with about 4 kcal per gram for carbohydrate and protein. This makes fat the most energy-dense macronutrient, which is relevant when advising participants on energy balance.

Question 28Basic and Applied Sciences and Nutritional Concepts

Which muscle fiber type is best suited for low-intensity, long-duration activities such as a 60-minute group cycling class?

  1. Type IIa fibers
  2. Type IIx fibers
  3. Type I fibers Correct answer.
  4. Type IIb fibers

Explanation

Type I (slow-twitch) fibers have a high oxidative capacity, many mitochondria, and resistance to fatigue, making them ideal for sustained aerobic work. Type II fibers are more glycolytic and fatigue quickly, so they are less suited to long-duration efforts.

Question 29Basic and Applied Sciences and Nutritional Concepts

During the upward phase of a biceps curl, which muscle action is occurring at the elbow flexors?

  1. Concentric Correct answer.
  2. Isometric
  3. Passive
  4. Eccentric

Explanation

A concentric action occurs when a muscle shortens while producing force, as the elbow flexors do when lifting the dumbbell against gravity. The eccentric action would be the lowering phase, and isometric would involve no change in muscle length.

Question 30Basic and Applied Sciences and Nutritional Concepts

A participant in a step aerobics class reports burning in the front of the lower leg during the workout. Which muscle group is most likely overactive or tight?

  1. Tibialis anterior Correct answer.
  2. Peroneus longus
  3. Soleus
  4. Gastrocnemius

Explanation

The tibialis anterior dorsiflexes the ankle and is often overactive in individuals who develop shin discomfort during repetitive stepping. Tightness or overactivity in this muscle can contribute to altered ankle mechanics and localized burning.

Question 31Basic and Applied Sciences and Nutritional Concepts

Which of the following is a primary function of the cardiovascular system during exercise?

  1. Storing glycogen in the liver
  2. Producing synovial fluid
  3. Generating action potentials in muscle fibers
  4. Delivering oxygen and nutrients to working muscles Correct answer.

Explanation

The cardiovascular system transports oxygen, nutrients, and hormones to working muscles and removes metabolic byproducts such as carbon dioxide. This delivery supports aerobic energy production and helps maintain homeostasis during exercise.

Question 32Basic and Applied Sciences and Nutritional Concepts

A participant wants to reduce the risk of osteoporosis. Which type of exercise is most effective for increasing bone mineral density?

  1. Weight-bearing resistance training Correct answer.
  2. Static stretching
  3. Swimming
  4. Cycling

Explanation

Weight-bearing and resistance exercises apply mechanical stress to bone, which stimulates osteoblast activity and helps maintain or increase bone mineral density. Non-weight-bearing activities like swimming and cycling provide less osteogenic stimulus.

Question 33Basic and Applied Sciences and Nutritional Concepts

Which of the following best describes the role of the antagonist muscle during a movement?

  1. It generates the majority of the force for the action.
  2. It stabilizes the joint to prevent movement.
  3. It opposes the prime mover and helps control the movement. Correct answer.
  4. It assists the prime mover in producing force.

Explanation

The antagonist muscle opposes the action of the prime mover and helps regulate the speed and control of movement, often through eccentric action. It does not typically generate the primary force or act as a stabilizer in the same way as a fixator.

Question 34Basic and Applied Sciences and Nutritional Concepts

A participant performs a lunge and the front knee excessively moves past the toes. Which cue is most appropriate to improve the movement?

  1. Shift more weight onto the front leg.
  2. Allow the front heel to lift off the floor.
  3. Rotate the torso toward the front leg.
  4. Increase the stride length and keep the torso upright. Correct answer.

Explanation

Increasing stride length allows the front shin to remain more vertical and reduces forward knee translation, helping keep the knee aligned over the foot. Maintaining an upright torso also supports better hip and knee mechanics.

Question 35Basic and Applied Sciences and Nutritional Concepts

Which of the following is the recommended protein intake range for most active adults participating in regular resistance training?

  1. 1.2 to 2.0 g/kg body weight per day Correct answer.
  2. 0.4 g/kg body weight per day
  3. 0.8 g/kg body weight per day
  4. 3.0 to 4.0 g/kg body weight per day

Explanation

Current position stands suggest 1.2 to 2.0 g/kg per day for active individuals engaged in resistance training to support muscle repair and growth. The RDA of 0.8 g/kg is a minimum for sedentary adults, while very high intakes are unnecessary for most.

Question 36Basic and Applied Sciences and Nutritional Concepts

A participant performs a plank and their hips sag toward the floor. Which muscle group is most likely underactive?

  1. Rectus abdominis and transverse abdominis Correct answer.
  2. Latissimus dorsi
  3. Erector spinae
  4. Hip flexors

Explanation

Hip sagging in a plank often indicates insufficient core stabilization, particularly from the rectus abdominis and transverse abdominis, which help maintain a neutral spine. These muscles work to prevent lumbar extension and keep the pelvis level.

Question 37Basic and Applied Sciences and Nutritional Concepts

Which statement best explains why a participant's heart rate might be lower than expected during a group fitness class despite high perceived exertion?

  1. The participant is likely dehydrated.
  2. The participant is not working hard enough.
  3. The participant may be taking a beta-blocker medication. Correct answer.
  4. The participant has a high level of aerobic fitness.

Explanation

Beta-blockers reduce heart rate and can blunt the normal heart rate response to exercise, so perceived exertion may be high while heart rate remains lower than predicted. This medication effect is important to consider when using heart rate to gauge intensity.

Question 38Basic and Applied Sciences and Nutritional Concepts

Which of the following is a primary role of the Golgi tendon organ during resistance training?

  1. Monitoring tension and inhibiting muscle contraction to prevent injury Correct answer.
  2. Regulating blood flow to working muscles
  3. Detecting joint position and movement
  4. Detecting changes in muscle length

Explanation

The Golgi tendon organ senses tension within the tendon and can trigger a reflexive relaxation of the muscle when tension becomes excessive, helping protect against injury. This is distinct from muscle spindles, which detect changes in muscle length.

Question 39Basic and Applied Sciences and Nutritional Concepts

A participant with a history of shoulder impingement complains of pain when performing overhead presses. Which modification is most appropriate for the group fitness instructor to suggest?

  1. Encourage rapid overhead movements to improve mobility.
  2. Perform the exercise behind the neck.
  3. Limit overhead range of motion and focus on scapular stabilization exercises. Correct answer.
  4. Increase the load to strengthen the shoulder.

Explanation

Limiting overhead range and emphasizing scapular stabilizers can reduce impingement symptoms by avoiding the position that narrows the subacromial space. Strengthening the rotator cuff and scapular muscles supports better mechanics without provoking pain.

Question 40Basic and Applied Sciences and Nutritional Concepts

Which of the following best explains the concept of specificity in training?

  1. All participants respond similarly to the same program.
  2. The body adapts specifically to the type of stress applied. Correct answer.
  3. Training must be varied to avoid plateaus.
  4. Training intensity should be reduced every few weeks.

Explanation

The principle of specificity states that physiological adaptations are specific to the type of training stimulus, so a program should mimic the desired outcome. For example, endurance training improves endurance, while strength training improves strength.

Question 41Assessment

During a pre-participation screening, a new participant reports sharp knee pain when climbing stairs. What is the most appropriate initial action for the group fitness instructor?

  1. Begin a corrective flexibility program for the knee and reassess in two weeks
  2. Clear the participant for low-impact classes only and monitor symptoms
  3. Document the pain and proceed with the planned workout at reduced intensity
  4. Refer the participant to a qualified health care professional before continuing with exercise recommendations Correct answer.

Explanation

Sharp pain reported during screening is a red flag that falls outside the instructor's scope of practice. The instructor should refer the participant to a qualified health care professional rather than designing or modifying a program for a medical condition. Documentation is appropriate, but it does not replace referral.

Question 42Assessment

Which of the following best describes the purpose of the PAR-Q+ during an initial fitness assessment?

  1. To measure baseline cardiorespiratory endurance and muscular strength
  2. To determine the participant's preferred class format and schedule
  3. To identify participants who need medical clearance before increasing activity Correct answer.
  4. To calculate a precise body fat percentage for goal setting

Explanation

The PAR-Q+ is a health screening tool designed to flag individuals who should consult a physician before becoming more physically active. It does not measure fitness, body composition, or preferences. Its value lies in safety screening and appropriate referral.

Question 43Assessment

A participant's resting heart rate is 70 beats per minute. Using the heart rate reserve method with an estimated maximum heart rate of 190 bpm, what is the lower end of the 50-70% training zone?

  1. 95 bpm
  2. 130 bpm
  3. 126 bpm
  4. 112 bpm Correct answer.

Explanation

Heart rate reserve equals maximum heart rate minus resting heart rate, or 190 minus 70, which is 120. The lower target is resting heart rate plus 50% of the reserve: 70 plus 60 equals 130. Rechecking the calculation confirms 130 bpm as the correct lower bound.

Question 44Assessment

When administering a cardiorespiratory assessment to a deconditioned beginner, which modification best supports safety and accurate data collection?

  1. Compare the participant's result directly against elite normative data
  2. Extend the test duration so the participant reaches volitional fatigue
  3. Administer the test immediately after a vigorous warm-up to raise heart rate
  4. Use a submaximal protocol and monitor perceived exertion and symptoms throughout Correct answer.

Explanation

Submaximal protocols are appropriate for beginners because they reduce cardiovascular risk while still yielding useful estimates. Monitoring perceived exertion and symptoms allows the instructor to stop the test if needed. Maximal efforts and elite comparisons are inappropriate for deconditioned participants.

Question 45Assessment

A participant performs a squat assessment and the feet flatten and rotate outward as the descent begins. Which observation is the instructor documenting?

  1. Asymmetrical arm raise during the descent
  2. Knee valgus with hip adduction
  3. Foot and ankle pronation compensation Correct answer.
  4. Excessive forward lean of the torso

Explanation

Flattening and outward rotation of the feet during a squat typically indicate pronation compensation at the foot and ankle. The instructor records this as an observed movement impairment for later program design. Torso lean and knee valgus are separate, distinct compensations.

Question 46Assessment

Which postural view is used primarily to observe the alignment of the head, shoulders, hips, and knees from the side?

  1. Posterior view
  2. Overhead view
  3. Anterior view
  4. Lateral view Correct answer.

Explanation

The lateral view examines the body from the side and reveals forward head, rounded shoulders, and pelvic tilt in the sagittal plane. Anterior and posterior views address frontal-plane alignment. Each view contributes different information to a complete postural assessment.

Question 47Assessment

During a single-leg squat assessment, a participant's knee moves inward. Which muscle group is most commonly identified as underactive in this compensation?

  1. Hip flexors
  2. Adductor complex
  3. Gluteus maximus and gluteus medius Correct answer.
  4. Tensor fasciae latae

Explanation

Inward knee motion during a single-leg squat often reflects insufficient hip abductor and external rotator strength, commonly the gluteus maximus and medius. These muscles help control femoral alignment. The other listed groups are typically associated with overactivity in this pattern.

Question 48Assessment

A participant's push-up assessment shows the low back sagging toward the floor. What does this observation most likely indicate?

  1. Weak pectorals limiting push-up depth
  2. Overactive hip flexors with underactive gluteals and core stabilizers Correct answer.
  3. Overactive gluteals with underactive hip flexors
  4. Tight latissimus dorsi limiting shoulder extension

Explanation

Sagging of the low back during a push-up suggests the core and gluteals are not maintaining spinal stability while hip flexors pull the pelvis anteriorly. The instructor would note this as a lumbo-pelvic compensation. Shoulder and chest strength affect different aspects of the movement.

Question 49Assessment

Which assessment tool is most appropriate for estimating a participant's muscular endurance of the upper body in a group setting?

  1. One-repetition maximum bench press
  2. Sit-and-reach test
  3. Vertical jump test
  4. Push-up test to fatigue with controlled form Correct answer.

Explanation

A push-up test performed to fatigue with controlled form is a practical field measure of upper body muscular endurance. It is safe and time-efficient for group settings. One-repetition maximum testing requires specialized supervision and is not an endurance measure.

Question 50Assessment

A participant holds a plank for 45 seconds before the hips drop. Which variable is being assessed?

  1. Core muscular endurance Correct answer.
  2. Cardiorespiratory endurance
  3. Flexibility
  4. Muscular power

Explanation

A plank hold assesses the ability of the core musculature to sustain a contraction over time, which is muscular endurance. Power involves force production over a short duration, and flexibility involves range of motion. Cardiorespiratory endurance requires sustained whole-body activity.