Question

running five miles tests your cardiorespiratory endurance. *
true
false
doing 20 repetitions of a certain weight is an example of muscular strength.
true
false
being able to lift 200 lbs. only once is an example of muscular strength. *
true
false

Explanation:

• First question: Cardiorespiratory endurance is the ability of the heart, lungs, and blood vessels to deliver oxygen to working muscles during continuous physical activity. Running five miles is a form of aerobic exercise that challenges the cardiorespiratory system to supply oxygen - rich blood to the muscles for an extended period. So, running five miles tests cardiorespiratory endurance.
• Second question: Muscular strength is the amount of force a muscle can produce in a single maximal effort. Muscular endurance is the ability of a muscle or group of muscles to sustain repeated contractions against resistance for an extended period. Doing 20 repetitions of a certain weight is an example of muscular endurance, not muscular strength.
• Third question: Muscular strength is defined as the maximum amount of force a muscle can exert in a single contraction. Being able to lift 200 lbs. only once is a demonstration of the maximum force (muscular strength) that the relevant muscles can produce.

Answer:

• First question: True
• Second question: False
• Third question: True