I get into this argument with one of my colleagues (a tenured faculty member that teaches cardiovascular physiology and runs a cardiac rehab clinic). He is an avid runner but hates weight training.
My cholesterol is less than 150, resting HR in the low 60’s, resting blood pressure 130/70. I do zero cardio, just lift and watch what I eat. My high intensity weight-training, esp. 50 reps sets of leg presses is all I need to get me up multiple flights of stairs especially when I’m carrying something that weighs 50 + lbs. While my colleague would get up the stairs perhaps a little easier because he weighs only 160 lbs while I weight 270, carrying the 50 lbs would crush him.
While I do agree, being an exercise physiologist, that three 20-30 minute sessions of cardio per week is fine, I think the health benefits of cardio beyond that are grossly overrated, especially for body composition control and providing functional improvements in daily living activity particularly in women and aging individuals. Weight training is by FAR more important than cardio and given limited time, I would recommend that those populations lift and watch their diet vs do cardio.
Last time I put a distance runner through a high-rep fast paced leg workout, they ended up face in the toilet. So much for their high VO2max.
When I have to start chasing cattle on foot for my filets, I’ll start formalized cardio.
Now, having said all that, if you are involved in activities that require mostly aerobic metabolism, then cardio is necessary because training is specific. As far as the male BBs go that aren’t worth a shit climbing and hiking, some cardio is unlikely to do them much good. Their problem is that they are not built or trained for cardiovascular activities, nor is it their goal. If they were, they’d have to lose some mass and reduce the size of their muscle fibers to facilitate better O2 diffusion, but then they wouldn’t look like bodybuilders.
And, interval training with short exercise bouts above lactate threshold is used to further improve VO2max beyond that derived from moderate intensity cardio. In addition, sprint training is used by distance runners to prepare them for hills.
W6