ACE 03 Program Design 33% Flashcards
A muscle with which of the following muscle arrangements has the LOWEST force production, but the HIGHEST speed of contraction?
Longitudinal
Why?
Penniform muscles, which include unipennate, bipennate, and multipennate muscles, are designed for higher force production than longitudinal muscles. Longitudinal muscles are long and thin and have parallel fibers that run in the same direction as the length of the muscle. This type of fiber arrangement allows for speed of contraction.
Which of the following is an example of a multiplanar movement from the anatomical position?
Opposition of the thumb
Why?
Opposition of the thumb is a movement unique to primates and humans that follows a semicircle toward the little finger. Each of the other movements is uniplanar.
Which pair of shoulder muscles is BEST strengthened by shoulder shrugs performed with resistance?
Levator scapulae and trapezius
Why?
These two muscles that act at the shoulder girdle to elevate the scapula are effectively targeted by shoulder shrugs.
The birddog is an effective exercise for which of the following muscles that act at the trunk?
Multifidi
Why?
The multifidi, which contribute to spinal stability during trunk extension, rotation, and side-bending, are effectively targeted by the birddog.
Which category of hip muscles is primarily responsible for hip adduction?
Medial muscles
Why?
The medial hip muscles (i.e., those hip muscles closer to the midline of the body), including the pectineus, adductor brevis, adductor longus, gracilis, and adductor magnus, are primarily responsible for hip adduction.
What muscles are strengthened when a client performs side-lying leg lifts with the lower leg?
Adductors work concentrically in the upward phase and ecentrically in the downward phase.
Why?
ACE’s Essentials of Exercise Science for Fitness Professionals, p. 121
The soleus, gastrocnemius, and plantaris are located in which compartment of the lower leg?
Superficial posterior compartment
Why?
The soleus, gastrocnemius, and plantaris are all located in the superficial posterior compartment of the lower leg and serve as primary plantarflexors of the ankle joint.
When evaluating a new client’s posture, a personal trainer notices a long outward curve of the thoracic spine with a decreased anterior lumbar curve and a backward shift of the upper trunk. What postural deviation does this client have?
Sway back
Why?
Sway-back posture is a long outward curve of the thoracic spine with a decreased anterior lumbar curve and a backward shift of the upper trunk. It is often accompanied by rounded shoulders, a sunken chest, and a forward-tilted head. If an individual has this postural abnormality and cannot actively assume a neutral-spine posture, the fitness professional should refer him or her to a physician.
Which of the following muscles plays a vital role (with the multifidi) in providing feedback to the central nervous system about spinal joint position before dynamic forces in the extremities destabilize the spine?
Transverse abdominis
Why?
Coactivation of the transverse abdominis and multifidi muscles occur before any movements of the limbs. Specifically, these two muscles are activated an average of 30 milliseconds before shoulder movement and 110 milliseconds before leg movement. What is the importance of this temporal pattern of trunk muscle recruitment? The transverse abdominis and multifidi muscles are thought to play a vital role in providing feedback about spinal joint position, and thus forewarn the central nervous system about impending dynamic forces to be created in the extremities that may destabilize the spine.
“Shoulder girdle” is the informal term for the _______________.
Scapulothoracic articulation
Why?
Shoulder girdle is the informal term for scapulothoracic (S/T) articulation, which consists of the muscles and fascia connecting the scapula to the thorax.
The _______________ joint allows inversion and eversion of the foot.
Subtalar
Why?
The articulation of the talus and the calcaneus is referred to as the subtalar joint, which allows inversion and eversion of the foot.
There are _______________ compartments in the lower leg.
Three
Why?
Like the thigh, the lower leg has three separate compartments that are divided by connective tissue: anterior, posterior, and lateral compartments.
The _______________ compartment extends the toes and dorsiflexes/inverts the foot.
The anterior compartment of the lower leg contains muscles that extend the toes and dorsiflex and/or invert the foot.
The _______________ and _______________ are powerful plantar flexors that share an insertion on the Achilles tendon.
Gastrocnemius; soleus
Why?
The gastrocnemius and soleus are powerful plantar flexors that make up the bulk of the calf and share a common insertion on the Achilles tendon.
If an individual has tight hip flexors, what condition can occur in the lumbar spine?
Lordosis
Why?
Because of its origin at the lumbar spine, tight hip flexors can result in passive hyperextension of the lumbar spine, which is known as lordosis.
ACE Essentials of Exercise Science, p. 118
The _______________ muscle group is the prime mover during a prone leg curl. As the knee flexes, a(n) _______________ contraction occurs. As the knee extends, a(n) _______________ contraction occurs.
Hamstring; concentric; eccentric
Why?
The primary knee flexors are the hamstrings; they are the prime mover during a prone leg curl. As the knee flexes, a concentric contraction occurs, and as the knee extends, an eccentric contraction occurs.
ACE Essentials of Exercise Science, p. 123
The _______________ muscle group is the prime mover during a squat. As the knee flexes, a(n) _______________ contraction occurs. As the knee extends, _______________ contraction occurs.
Quadriceps; eccentric; concentric
Why?
The quadriceps femoris is the prime mover for knee extension when acting concentrically. As the knee flexes during the downward motion of a squat, the quadriceps act eccentrically to allow knee flexion. On the upward motion of the squat, the quadriceps muscles act concentrically as prime movers to extend the knee.
You notice when a client or class participant bends down that his heels cannot maintain contact with the floor. What muscles can you suspect to be tight?
Plantar flexors
Why?
The large muscles of the superficial posterior tibial compartment are the primary plantar flexors of the ankle joint. The gastrocnemius and soleus muscles are often inflexible, particularly among individuals who regularly wear high-heeled shoes.
You notice a client or class participant is running “flat-footed.” You can hear her foot slap the treadmill with every step. What muscles can you suspect to be weak?
Dorsiflexors
Why?
When acting concentrically, the muscles of the lower leg produce dorsiflexion of the ankle, and work together during walking and running to eccentrically lower the foot to the ground with control. Without the eccentric action of the dorsiflexor muscles as dynamic shock absorbers, the foot would slap the ground with each stride or impact.
The concentric contraction of the upper trapezius produces _______________ and _______________ of the scapula.
Elevation; upward rotation
Why?
The fibers of the upper trapezius are angled upward and obliquely. Therefore, if the upper fibers are activated concentrically, they will produce elevation and upward rotation of the scapula.
If scapular adductors are weak, the postural deviation called _______________ is likely.
Kyphosis
Why?
Kyphosis is defined as an excessive posterior curvature of the spine, resulting in a rounded-shoulders posture. If the scapular adductors are weak, fatigued, or injured, the muscular tension created by the pectoralis minor will tilt the scapulae forward and down, resulting in kyphosis.
Scapular protraction is also known as _______________.
Abduction
Why?
Scapular protraction is also known as abduction. Concentric activity of the pectoralis minor results in abduction of the scapula.
Injury to the _______________ is common in baseball pitchers because of the repetitious pattern of abduction, flexion, and rotation of the shoulder.
Rotator cuff
Why?
The four musculotendinous attachments of the rotator cuff can become inflamed as a result of performing many repetitions of movements that involve abduction, flexion, and rotation, as seen in the throwing motion of baseball pitchers.
ACE Essentials of Exercise Science, p. 143-144
During the up-phase of a shoulder overhead press, the middle deltoid is _______________ contracting.
Concentrically
Why?
The fibers of the middle deltoid are aligned perfectly with the frontal plane, and thus this muscle is the primer mover in concentric abduction of the shoulder joint, as seen during the upward phase of a shoulder overhead press.
ACE Essentials of Exercise Science, p. 142
The _______________ deltoid extends, externally rotates, and horizontally extends the arm at the shoulder.
Posterior
Why?
The posterior deltoid is located on the back side of the glenohumeral joint and has the exact opposite functions as the anterior deltoid: it extends, externally rotates, and horizontally extends the arm at the shoulder.
An individual is performing a seated leg press. What prime movers initiate this exercise?
Knee extensors and hip extensors
Why?
The knee extensors (quadriceps femoris) and hip extensors (hamstrings and gluteus maximus) are the prime movers that initiate the movement to straighten the legs at the beginning of a seated leg press.
ACE Essentials of Exercise Science, p. 118, 122
Which of the following exercises would be MOST appropriate for an individual who needs to strengthen the hip adductors?
Side-lying leg lifts with the bottom leg lifting upward
Why?
Side-lying leg lifts with the lower leg lifting upward require the adductors to work concentrically in the upward phase and eccentrically in the downward phase.
ACE Essentials of Exercise Science, p. 121
What muscle or muscle group is the prime mover during a prone hamstring curl?
Knee flexors
Why?
The prime movers during a prone hamstring curl are the knee flexors, which are comprised of the hamstrings muscle group.
Your client or class participant is experiencing some pain in her low back when performing abdominal exercises. Which of the following imbalances could potentially cause this condition?
Tightness in the iliopsoas
Why?
Because of its origin at the lumbar spine, iliopsoas tightness can result in lordosis, which can cause low-back pain, particularly during the second half of a sit-up and with prolonged periods of sitting. To correct the anterior pelvic tilt position associated with lumbar lordosis, focus on strengthening the abdominal and hip extensor muscles, while stretching the hip flexors and spine extensors.
ACE Essentials of Exercise Science, p. 116, 128-129
What is the primary action of the gluteus medius?
Hip abduction
Why?
The three gluteal muscles—gluteus medius, gluteus minimus, and the superior fibers of the gluteus maximus—are the primary hip abductors and are assisted by the tensor fasciae latae. The gluteus medius is the largest of the hip abductor muscles, two times larger than the gluteus minimus.
ACE Essentials of Exercise Science, p. 119
What group of muscles works eccentrically during the down-phase of a squat?
Gluteus maximus and hamstrings
Why?
Eccentric action of the gluteus maximus and hamstrings controls the downward phase of the squat into hip flexion.
Very little of the __________ a person consumes is used for energy production.
Protein
Why?
Of the three macronutrients, relatively little protein is used for energy production except in extreme cases of caloric restriction. Protein is principally used in the growth and repair of tissue or is excreted.
Which of the primary energy systems supplies enough energy for no more than 10 seconds of all-out exertion?
Phosphagen system
Why?
The total amount of ATP and creatine phosphate (CP) stored in muscle is very small, and thus the amount of energy available for muscular contraction is extremely limited. There is probably enough energy available from the phosphagens for only about 10 seconds of all-out exertion, if there were not continual resynthesis of ATP.
What is the only macronutrient whose stored energy generates adenosine triphosphate (ATP) anaerobically?
Carbohydrate
Why?
Carbohydrate serves as the major food fuel for the metabolic production of adenosine triphosphate (ATP), which is a chemical compound required for all cellular work. Importantly, carbohydrate is the only macronutrient whose stored energy generates ATP anaerobically. This is crucial during maximal exercise that requires rapid energy release above levels supplied by aerobic metabolism.
During high-intensity workouts, when there is inadequate oxygen, pyruvate converts into _______________.
The Correct Answer is:
Lactate
Why?
If exercise intensity is very high and adequate amounts of oxygen are not available, pyruvate can be converted into lactate, which may be transported out of the active cell and used for energy by other cells in the body. This allows for the continued production of pyruvate via anaerobic glycolysis, resulting in a steady supply of ATP.
ACE Essentials of Exercise Science, p. 74
Beta oxidation is a result of _______________.
The breakdown of fatty acids to produce ATP
Why?
Beta oxidation, also called fatty acid oxidation, occurs within the mitochondria and is an aerobic pathway that breaks down fatty acids to produce ATP.
The primary energy system used during a plyometric jump squat is the _______________.
Phosphogen system
Why?
The phasphagen system is instantaneously available for muscular contraction and is essential during short-term, high-intensity activities such as sprinting or strength-training exercises like a plyometric jump squat.
ACE Essentials of Exercise Science, p. 73
Aerobic glycolysis occurs in the cells’ _______________, and anaerobic glycolysis occurs in the cells’ _______________.
Mitochondria; cytoplasm
Why?
Aerobic glycolysis is a metabolic pathway that occurs within highly specialized cell structures called the mitochondria, which are often called the powerhouses of the cell. Anaerobic glycolysis occurs within the cytoplasm of the cell and involves the incomplete breakdown of glucose to a simpler substance called pyruvate.
_______________ is the primary nutrient utilized during high-intensity exercise.
Carbohydrate
Why?
Compared to fatty-acid metabolism, glucose metabolism requires less oxygen, so the body will use more glucose and less fat for energy production as exercise intensity increases. The respiratory exchange ratio is a marker of the proportion of fat or carbohydrate that is being used for fuel at different exercise intensities. At higher intensities, carbohydrate becomes the primary source of fuel.
Oxidative glycolysis occurs as a result of sufficient _______________ in the mitochondria.
Oxygen
Why?
Oxidative glycolysis, which occurs within the mitochondria, is limited mainly by the capacity of the cardiorespiratory system to deliver oxygen to the active cells.
Blood glucose is efficient in fueling _______________ exercise, whereas muscle glycogen is more efficient in fueling _______________ exercise.
Low-intensity; high-intensity
Why?
Blood glucose plays a greater role in energy metabolism during low-intensity exercise, as the body’s ability to deliver glucose is comparable to the rate of glucose utilization. However, muscle glycogen is the primary source of carbohydrate during high-intensity exercise, as the rate of glucose utilization far exceeds the rate of glucose delivery.
When lactic acid accumulates in the body during exercise, the liver converts it to _______________ as a way to continue fueling the muscle.
Glucose
Why?
During exercise, some of the lactate that is produced by skeletal muscles is transported to the liver via the blood. The liver then converts the lactate back to glucose and releases it into the bloodstream to be transported back to the skeletal muscles to be used as an energy source. The cycle of lactate-to-glucose between the muscle and the liver is called the Cori cycle. This process works to preserve the body’s glucose levels and to ensure that the muscles have adequate fuel to perform work.
ACE Essentials of Exercise Science, p. 222-223
During the first hour of a half-marathon, carbohydrate metabolism is fueled by _______________.
Muscle glycogen
Why?
During the first hour of submaximal endurance exercise, such as a half-marathon, much of the carbohydrate metabolized by muscle comes from muscle glycogen.
During low-intensity exercise, _______________ is/are the primary source of fat energy.
Plasma free fatty acids
Why?
During low-intensity exercise, plasma free fatty acids are the primary source of fat energy. Furthermore, as the duration of the exercise increases, there is a progressive rise in the role of plasma free fatty acids as a fuel source.
What are the 3 primary energy pathways?
- Phosphagen (immediate source)
- Anaerobic (somewhat slow, uses carbohydrates)
- Aerobic (slow, uses either carbohydrate or fat)
https://www.acefitness.org/fitness-certifications/resource-center/exam-preparation-blog/3256/the-three-primary-energy-pathways-explained
The following list presents the four phases of the functional movement and resistance training component of the ACE IFT® Model in their proper order:
Stability and mobility training
Movement training
Load training
Performance training
During what phase of the functional movement and resistance training component of the ACE IFT® Model is the application of external resistance to functional movement patterns a primary focus?
Load training
Why?
The focus of phase 3, or load training, is on applying external resistances, or loads, to functional movement patterns. Phase 3 applies the traditional resistance-training methodology for endurance, hypertrophy (or strength-endurance), and strength to the client’s particular goals.