Fitisafeministissue iconFitisafeministissueSep 15, 2026 ~3 min source read

Hard workouts and better aging

A five-year randomized program in people aged 70–77 found everyone lost cardiorespiratory fitness with age, but twice-weekly high-intensity training reduced that decline compared with moderate sessions or standard public-health advice.

Hard workouts and better aging

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The intervention was supervised twice-weekly sessions lasting the whole program, which ran for five years and started in people aged 70–77.

Individual health constraints matter: the author notes gastroesophageal reflux triggered by intense upright efforts led to considering lower-impact alternatives that still allow hard efforts, such as uphill walking or the elliptical.

The useful part

It's about this study, Exercise Intensity and 5-Yr Trajectories in Peak Oxygen Uptake in Older Adults: The people who were doing high-intensity training (HIT) lost less fitness than those doing moderate intensity (MIT)." Why I'm thinking about it: Regular readers may recall I was diagnosed last year with a hiatal hernia and intense exercise is one of the triggers for acid reflux.

How it works

  • Like Loading… One thought on " Hard workouts and better aging " One of my knees told me pretty clearly that my running days are over (I never liked it that much…) so I now walk very fast up steep slopes.
  • Participants were originally randomized into three groups and either told to follow public health guidelines by getting half an hour of moderate exercise per day, or enrolled in twice-a-week supervised...
  • I started to think about changing my fitness identity on the bike, moving into endurance efforts instead of sprinting.
  • Biking for sure triggers reflux when I try to go fast, unless I'm very careful about what and when I eat.
  • Co-founder of Fit Is a Feminist Issue, co-author of Fit at Mid-Life: A Feminist Fitness Journey, published by Greystone Books.

Details worth keeping

The program lasted for five years." The findings, "Everybody lost fitness. So I'm looking for an exercise that's upright for intense efforts. I can get my heart rate up into low zone 5 if I go for about 5 minutes.

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Our oldest blogger on aging and fitness!

Our oldest blogger on aging and fitness!

by Winnie I read Sam’s post this morning, the one about gradual loss of fitness due to aging. Or perhaps not exactly driven by aging. What is the reality? I guess I get to speak as one who is definitely older (soon to be 75). My own experience strongly suggests that you don’t have to… Continue reading Our oldest blogge

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