Improving cardiorespiratory fitness through regular exercise promotes cardiovascular health by making the heart more efficient and reducing cholesterol. This allows extended periods of exercise, less muscle fatigue and reduced stress on the heart. Strength and resistance exercises contribute to muscle mass and endurance by leading to muscle hypertrophy and an increase in muscle fibers, mitochondria, and capillary networks.
Improving cardiorespiratory fitness and muscular strength and endurance are considered good strategies for enhancing body composition due to several factors.
Cardiorespiratory fitness is enhanced by regular exercise which promotes cardiovascular health in numerous ways. Exercise makes the heart more efficient as it enlarges and the stroke volume increases. This results in the heart delivering the same quantity of blood as the nonathletic heart but at a lower heart rate. In effect, this allows the person to exercise for extended periods of time before the muscles fatigue, placing less stress on the heart. Exercise further lowers overall cholesterol levels by taking away certain cholesterol complexes known as low-density lipoproteins (LDLs) which are related to an increased risk of cardiovascular diseases.
As for muscular strength and endurance, resistance exercises lead to muscle hypertrophy - an enlargement of muscles. This is because such workouts drive the development of myofibrils, leading to an increase in muscle fiber thickness. This addition of structural proteins contributes to overall muscle mass, as well as to the strength of connective tissue and tendons, helping contain muscles during powerful contractions and prevent damage.
Endurance exercise, on the other hand, facilitates muscular endurance and capabilities by leading to cellular changes such as an increase in the number of mitochondria, capillary networks and certain types of muscle fibers, specifically SO fibers. These changes collectively allow for sustained low levels of muscle contractions for extended periods without fatigue and thereby enhancing body composition.
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b. estrogen level falls.
c. progesterone level falls.
d. egg is fertilized.
The inflammatory response can cause
a. permanent immunity.
b. pain, swelling, and a local rise in temperature.
c. antibodies to bind to antigens.
d. cytotoxic T cells to attack infected cells
B) Decrease in using convenience foods
C) Increase in eating away from home
D) Increase in complexity of food pyramid
Question:
Which of the following trends presents a nutrition challenge for children?
A) Increase in breastfeeding infants
B) Decrease in using convenience foods
C) Increase in eating away from home
D) Increase in complexity of food pyramid
Answer:
The following trend that presents a nutrition challenge for children is C) Increase in eating away from home.
b. Pretzels and crackers
c. Nuts and seeds
d. Fruits and frozen fruit bars
Answer:
I believe it will be Answer C.
Explanation: