When runners talk physiology, two terms tend to dominate the conversation: VO2 max and lactate threshold. Although the two metrics are related, they are not the same – and they shape performance in ...

VO2 max testing requires a mask to measure oxygen intake and carbon dioxide output to determine your cardiovascular fitness. When you think about how fit you are, you might think about how far you can ...

VO2max is a measure of cardiovascular fitness, and many watches and fitness trackers can estimate it for you. Here's what you ...

This story is one in a series called The New Running Boom, which highlights new personalities, clubs, tech, training, and shoes that make pounding the pavement fun! IF YOUR BODY is a machine, the size ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." A new study, involving nearly 800 older adults, points out the factors most associated with higher VO2 ...

There's no single 'correct' way to train for a marathon. Even at elite level, coaches and athletes approach the distance in different ways. This variation reflects attitudes and beliefs, training ...

At 77 years old, Jeannie Rice is still setting age group world records and altering what we thought we knew about aging and running. She currently owns the world record for every distance between the ...

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When you think about how fit you are, you might think about how far you can run or how many push-ups you can do. Or maybe you think about health metrics like your resting heart rate or heart rate ...