Our new mode-comparison study (aerobic vs. resistance exercise) in young Black men, an understudied group at elevated cardiovascular risk, showed that:
-RE induces a more pronounced and sustained cardiovascular and autonomic strain during the early post-exercise period than AE
-This was characterized by elevated central afterload, reduced myocardial oxygen supply–demand balance, and delayed parasympathetic reactivation
-Mode differences occurred despite similar session duration and exercise HR between bouts
-While both modes are generally safe/recommended, exercise Rx should consider mode-specific recovery differences, particularly when central afterload or autonomic recovery is a consideration
Full text below:
Focusing on young Black men was a smart and overdue choice for a mode-comparison study, given how underrepresented this group is in cardiovascular research despite carrying elevated risk. The finding that resistance exercise produced more pronounced and sustained cardiovascular and autonomic strain than aerobic exercise during the early post-exercise period is a useful reminder that the first minutes of recovery after lifting are not benign. Elevated central afterload combined with a reduced myocardial oxygen supply–demand balance sounds like a genuine concern for anyone with undetected cardiac issues. I’m also curious about the delayed parasympathetic reactivation — does that effect persist into later recovery, and would you expect the same pattern in older or hypertensive participants? As someone who tracks HRV around my own training, I’d love to see a follow-up connecting these hemodynamic responses to recovery metrics.