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Citation? Maybe I'm lifting wrong (too few reps with too much weight?) but I never get my heart rate up for long while doing it. IIRC exercise-elevated heart rate and breathing are what most directly translate to better cardiopulmonary health and stamina, which is what has the strongest effect on healthspan and lifespan.
There are many studies which conclude that strength, as measured by grip strength, is highly correlated with life span, even for individuals under age 60.
Here's a review: https://pubmed.ncbi.nlm.nih.gov/20829298/
What's your HR when doing squats? I usually got to 80%+ of my max HR when doing 5 reps at my working weight. Now, I do lighter weights and still experience elevated HR, but not to the same level.
My general understanding is that resistance work alone is enough to get someone to a decent level of cardiovascular health. Is there a lifespan benefit to being 95th percentile in resting HR or VO-2 max as opposed to 80th percentile?
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