351 - 375 Flashcards
Wrist curls and wrist extensions are both designed to strengthen which part of the body?
Wrist
Forearm
None of these
Upper arm
Shoulder
Forearm:
is correct because the wrist curl involves the flexor carpi ulnaris, flexor carpi radialis and palmaris lingus while wrist extensions work the extensor carpi ulnaris and the extensor carpi radialis brevis and longus.
Despite the use of the word wrist in the names these exercise, both are really exercise of the forearm.
The other options are incorrect because the wrist, shoulder and upper arm are either not a muscular area, don’t strengthe the forearm or isn’t a part of the lower arm.
Which of the following is least likely to be affected by endurance or cardiorespiratory training?
Mitochondrial density
Stroke volume
Ventilation
Max oxygen consumption
Arteriovenous oxygen difference
Ventilation:
is the correct answer. Aerobic training results in increased lung volume and diffusion capacity and may increase max ventilation capacity; however, it is unclear whether this adaptation is actually useful.
Ventilation at rest, submaximal exercise and exercise appears to be unchanged or slightly improved with endurance training.
All of the other options are primary adaptations to endurance and cardiorespiratory training.
With a goal of weight loss, what is the recommended decrease in calories per day?
30
100
300
500
1,000
300:
is correct because this is a safe reduction and will prevent clients from starving themselves.
The ACSM recommeds that you should decrease your daily caloric intake by 300 calories per day to achieve safe and effective weight loss.
30 and 100 are incorrect because they’re not low enought to achieve effective weight loss.
500 and 1,000 are incorrect because they’re to high and will lead to feelings of hunger.
Which of the following does not contribute to joint stability?
Muscles and tendons that span across the joint
Fascia that span the joint
Bony structure of the joint
Ligaments that span across the joint
Amount of synovial fluid
Amount of synovial fluid:
is correct because this may contribute to ease of movement and joint ROM, it does not affect joint stability.
The stability of a joint is its resistance to displacement. All joints do have the same degree of stability and in general, ROM is gained at the expense of stability.
All of the other options are incorrect because they contribute to joint stability.
When a motor unit is triggered, what % of the motor unit is utilized when performing exercises with a load half of one’s maximum?
25%
50%
75%
100%
None of these
100%:
is correct. Muscles are divided into motor units that consist of the motor neuron and all of the muscle fibers that it innervates.
During muscle contractions either the stimulus will be large enough to trigger an action potential, which will recruit all of the muscle fibers of the motor unit, or not large enough to trigger any of them.
This is referred to as the “all of nothing” or “all or none” law.
The other options are incorrect because the answer is 100% [all or nothing or all or none law].
Which types of food should a client consume to ensure they obtain an adequate amount of vitamins?
Grains and cereals
Fish and legumes
Meats and grains
Legumes and vegetables
Fruits and vegetables
Fruits and vegetables:
is correct because these are the most nutrient dense foods.
A variety of these two food choices will result in a variety of vitamin consumption.
Vegetables contain an abundance of minerals as well.
The other options are incorrect because the contain primarily carbs and protein.
Utilizing a resistance training program only will least likely result in the following improvement?
Power
Muscular endurance
Hypertrophy
Strength
Aerobic endurance
Aerobic endurance:
is correct because resistance training does not typically involve maintaining the heart rate needed to improve this quality for an extended period of time.
In resistance training, the attributes typically improved are strength, power, hypertrophy and muscular endurance.
However, resistance training exercises can be used in circuit training to improve aerobic endurance.
The other options are incorrect because they’re typically improved by resistance training.
When a client is performing a biceps curl with a 10lb weight and the weight moves a total of 1 m per rep, what is the total work for 3 sets of 10?
10 lb*m
30 lb*m
100 lb*m
3000 lb*m
300 lb*m
_300 lb*m:_
The equation for determining total work is [force or load] x [distance] x [number of reps].
In this example the force is 10lbs the distance is 1m and the number of reps is 10 and the number of sets is 3.
10lb x 1m = 10lbs*m x 10 = 100 lbs*m x 3 = 300lb*m
The other options are incorrect because they don’t equal 300lb*m
Which of the following is not a characteristic of type I muscle fibers compared to type II muscle fibers?
Fewer capillaries
Less force
More mitochondria
Longer contractions
Smaller in size
Fewer capillaries:
is correct. Type I or slow twitch, muscle fibers have characteristics that allow for greater oxygen delivery, such as a greater capillary density and myoglobin content, and more mitochodrial density.
In addition, slow-twitch muscle fibers are smaller, produce less force, are slower to fatigue and are utilized for longer-term contractions when compared to fast-twitch fibers.
The other options are incorrect because: Type II are capable of producing more force, are larger than Type I, have greater mitochondrial density and are faster than Type I with shorter contractions.
What is the VO2 of a client with a heart rate of 140 bpm and a stroke volume of 250ml per heart beat and arterial-venous oxygen difference of 12 ml of oxygen per 100 ml of blood?
402 ml per minute
4,200 ml per minute
420,000 ml per minute
42,000 ml per minute
2,916 ml per minute
4,200 milliliters per minute:
is correct. VO2 or volume of oxygen consumption, is a representation of the body’s ability to use oxygen as a fuel source, its aerobic capacity.
It is calculated by using Fick equation, which is the product of cardiac output (Q) and arterial-venous oxygen difference.
VO2 = Q x a-vO2 difference (In this case below)
140 bpm x 250mL/beat X 12mL O2 ÷ 100ml of blood = 4,200 mL/min
Which of the following dynamic flexibility exercises occurs in the frontal plane?
Wood chop
Side shuffle
Pendulum leg swings [front to back]
Soldier walk
Butt kicks
Side shuffle:
is correct because this is a lateral movement.
It moves along the plane that cuts the body into anterior and posterior halves.
Most movements occur in the sagittal plane.
The other options occur either in the sagittal or transverse planes, therefore those options are incorrect responses to this question.
Which level of education is needed to become a Certified Personal Trainer?
Grad degree in health sciences
There is no education requirement
Any undergrad degree
High school diploma
Undergrad degree in health sciences
High school diploma:
is correct because post-secondary education is not a requirement to become a PT.
In addition to a high school diploma an individual must be at least 18 years old and have a current CPR certification.
These requirements increase the professionalism of Certified Personal Trainers and decreases risk.
The other options are incorrect because a high school diploma is required but none of the other levels of education is.
Which of the following is not an effective method of minimizing risk?
Obtaining medical screeing for clients
Selling supplements
Obtaining adequate qualifications
Developing an emergency action plan
Regularly cleaning and maintaining exercise equipment.
Selling supplements:
is correct because they involve selling a product that may be harmful.
Risks can be reduced by educating oneself and taking action to keep the workplace clean and safe, ensuring that every client receives a medical screening before beginning a training program and developing an emergency action plan.
The other options are incorrect answers to the question because they all are effective methods of minimizing risk.
Which of the following activities falls outside the scope of a PT?
Addressing protein intake
Talking about calories
Discussing food preparation techniques
Developing meal plans
Discussing diets
Developint meal plans:
is correct because this involves knowledge of specific food amounts and interactions.
This knowledge is outside the scope of a PT.
Most states require professionals to obtain a license to develop meal plans, such as a dietition.
The other options are incorrect because they do fall reasonably within the scope of a PT.
Personal Trainers should provide exercise information in a manner that relates to which of the following?
Based on latest trends
Based on scientific evidence
Enertaining to watch
Base on popularity
Difficult to comprehend
Base on scientific evidence:
is correct because this is a safe and effective practice.
ACSM requires that all certified trainers base their training regiments on scientifically-backed evidence.
In other words, trainers shouldn’t blindly follow fitness trends or propose concepts that haven’t been backed by scientific research.
The reasons the other options are incorrect: no bearing on achieving results or decreasing risk, not customer-centered or is ineffective and unsafe.