Juan López started running at 66. Now in his eighties, he continues to amaze physiologists with his record-breaking feats ...

In contrast, despite being widely regarded as the greatest marathoner of all time, Eliud Kipchoge is estimated to sit closer ...

Your watch’s VO2 max isn’t perfect, but you can improve its accuracy with better data and heart-rate tracking.

VO2 max measures how much oxygen your body uses during hard exercise. A higher VO2 max improves endurance and longevity. Any ...

VO2 max has long been a measure of aerobic fitness valued by endurance athletes, but it’s not a stat that should just be of interest to keen sportspeople, because a high VO2 max is also linked with ...

By most measures, Norwegian triathlete Kristian Blummenfelt is the standard of peak performance in athletics. He won the gold ...

Add Yahoo as a preferred source to see more of our stories on Google. VO2 max testing requires a mask to measure oxygen intake and carbon dioxide output to determine your cardiovascular fitness.

VO2 max, the measure of how much oxygen the body consumes during exercise, has become a ubiquitous tool for professional athletes, but health experts increasingly say it's a measurement worthy of ...