High-intensity interval training strengthens the heart even more than moderate exercise does. Now researchers have found several answers to what makes hard workouts so effective. "Our research on rats ...

Supervised high-intensity interval training (HIIT) over 5 years reduced the risk for rapid decline in estimated glomerular filtration rate (eGFR) in community-dwelling adults aged 70-77 years.

Older adults who go beyond general physical activity guidelines and maintain or increase their moderate-to-vigorous physical activity levels have lower risks for rapid kidney function decline, ...