
Harder Workouts Help Older Adults Hold Onto Fitness Longer
A five-year reanalysis of the Generation 100 study in Norway followed 70–77-year-olds and found that those who trained at higher intensities preserved VO2 max better than those who trained at moderate intensity. By year five, men in the high-intensity group were 3.1% below baseline vs 7.7% for moderate; women in high-intensity returned to baseline while moderate was 4.6% below. The results support the idea that harder workouts can slow fitness decline with aging, while acknowledging zone-2 concepts remain nuanced.













