Which statement defines cardiovascular endurance?

Which statement defines cardiovascular endurance?

• A. The range of motion of joints and mobility of muscles.
• B. The ability of the heart, blood cells, & lungs to supply oxygen-rich blood to the working muscle tissues to help them move efficiently; ability of the muscles to use oxygen to produce energy for movement.
• C. The ability to perform repeated contractions without fatigue.
• D. The maximum force you can apply against a weight.

Answer: (B)

Cardiovascular endurance is the body's ability to supply oxygen to working muscles during sustained activity and to use that oxygen to produce the energy needed for movement. This is why the statement describing the heart, blood, and lungs delivering oxygen-rich blood to the muscles, plus the muscles' use of oxygen to generate energy, is the best fit. Flexibility relates to how far joints can move, not the cardiorespiratory system. Muscular endurance refers to performing repeated contractions without fatigue, and maximal strength is about the greatest force a muscle can produce in one effort.

Cardiovascular endurance is the body's ability to supply oxygen to working muscles during sustained activity and to use that oxygen to produce the energy needed for movement. This is why the statement describing the heart, blood, and lungs delivering oxygen-rich blood to the muscles, plus the muscles' use of oxygen to generate energy, is the best fit. Flexibility relates to how far joints can move, not the cardiorespiratory system. Muscular endurance refers to performing repeated contractions without fatigue, and maximal strength is about the greatest force a muscle can produce in one effort.