NAFC 5 EXAM 2025 QUESTIONS
AND ANSWERS
Aerobic - ANSWER✔✔-To be aerobic means to be "with oxygen," and one must engage
in an activity that promotes the supply and use of oxygen. The cardio-respiratory
system consists of the lungs, arteries, veins, heart, and blood within the body. Exercise
is developed to stimulate muscle contractions, hence training the muscles to promote
various health goals. Aerobic (cardio) training requires uninterrupted rhythmic
movements using large muscle systems to increase delivery of oxygen throughout the
human body. The oxygen delivery system improves with aerobic training and is called
aerobic capacity. Aerobic capacity improves with each of the following variables:
••
The ability to breathe in large volumes of air
••
The ability to deliver large amounts of blood to tissues
••
The ability to effectively transport blood to the entire body
COPYRIGHT © 2025 ALL RIGHTS RESERVED
, ••
A powerful heart and healthy vascular system is a direct reflection of improving aerobic
capacity and is currently the best measure of physical fitness
Anaerobic - ANSWER✔✔-Training continually at too high of a pace or not training hard
enough to stay within specified training intensity can render the exercise an anaerobic
activity. Anaerobic exercise consists of activity that requires an all-out effort and can
only be performed for short periods of time.
49 Group Fitness Manual 3rd Ed. 10.21.14 © 2014 Developing Group Fitness Routines
This flushes more oxygen into the body than can be used and creates an oxygen deficit.
The oxygen deficit leads to an increased lactic acid build up within the muscle and
could be the cause for exercise exhaustion
Progressive Overload - ANSWER✔✔-To enhance aerobic capacity one must place a
demand on the cardiovascular and respiratory systems to temporarily overload the
heart, increasing the heart's beats per minute (BPM.) The principle of Progressive
Overload is used in aerobic training to condition the heart muscle by strengthening it to
pump more blood per beat. The principle of Progressive Overload is defined as a
greater demand (intensity or duration) continually placed on the body in incremental
stages. This also corresponds to the first stage of stress and stimulus. If overload is not
present, adaptation is not necessary and will not occur.
COPYRIGHT © 2025 ALL RIGHTS RESERVED
AND ANSWERS
Aerobic - ANSWER✔✔-To be aerobic means to be "with oxygen," and one must engage
in an activity that promotes the supply and use of oxygen. The cardio-respiratory
system consists of the lungs, arteries, veins, heart, and blood within the body. Exercise
is developed to stimulate muscle contractions, hence training the muscles to promote
various health goals. Aerobic (cardio) training requires uninterrupted rhythmic
movements using large muscle systems to increase delivery of oxygen throughout the
human body. The oxygen delivery system improves with aerobic training and is called
aerobic capacity. Aerobic capacity improves with each of the following variables:
••
The ability to breathe in large volumes of air
••
The ability to deliver large amounts of blood to tissues
••
The ability to effectively transport blood to the entire body
COPYRIGHT © 2025 ALL RIGHTS RESERVED
, ••
A powerful heart and healthy vascular system is a direct reflection of improving aerobic
capacity and is currently the best measure of physical fitness
Anaerobic - ANSWER✔✔-Training continually at too high of a pace or not training hard
enough to stay within specified training intensity can render the exercise an anaerobic
activity. Anaerobic exercise consists of activity that requires an all-out effort and can
only be performed for short periods of time.
49 Group Fitness Manual 3rd Ed. 10.21.14 © 2014 Developing Group Fitness Routines
This flushes more oxygen into the body than can be used and creates an oxygen deficit.
The oxygen deficit leads to an increased lactic acid build up within the muscle and
could be the cause for exercise exhaustion
Progressive Overload - ANSWER✔✔-To enhance aerobic capacity one must place a
demand on the cardiovascular and respiratory systems to temporarily overload the
heart, increasing the heart's beats per minute (BPM.) The principle of Progressive
Overload is used in aerobic training to condition the heart muscle by strengthening it to
pump more blood per beat. The principle of Progressive Overload is defined as a
greater demand (intensity or duration) continually placed on the body in incremental
stages. This also corresponds to the first stage of stress and stimulus. If overload is not
present, adaptation is not necessary and will not occur.
COPYRIGHT © 2025 ALL RIGHTS RESERVED
