Definition of "endurance" []

• The act, quality, or power of withstanding hardship or stress: A marathon tests a runner's endurance. (noun)
• The state or fact of persevering: Through hard work and endurance, we will complete this project. (noun)
• Continuing existence; duration. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Even if you're genetically predisposed to see little improvement in endurance, "it doesn't mean that you don't get any benefit from exercise," Rankinen says."
• "However, with a five-pack battery configuration, endurance is said to be 2.25 to 2.5 hours."
• "Iron Profile – a key physiologic component for oxygen transport/extraction and deficiencies are prevalent in endurance athletes (notably females)"