They're not the same adaptations at all. You literally cannot get any significant hypertrophy of the left ventricle, which is your primary means of improving recovery, from resistance training. Improving injection fraction is not even remotely the same thing. Which is not to say that you shouldn't be lifting for health benefits, because you obviously should for things like maintaining mobility and bone mass, but saying that starting strength causes the same adaptations as Couch to 5k is bullshit.
Originally Posted by Lindz
Last edited by selfcritical; 12/17/2011 8:00pm at .
What does injection fraction mean and why would I want to improve it?
just googled it. http://en.wikipedia.org/wiki/Injection_fraction
feel even dumber after reading that
Last edited by Lindz; 12/17/2011 8:09pm at .
Basically doing work under high pressure increases the amount of force your heart can eject blood with. High intensity work and weights generally make your heart thicker, which means you can deliver blood with the quickness. However, it still has to work hard to do that. That's concentric hypertrophy(because it's caused by the concentric action of the heart, aka the effort phase). Eccentric hypertrophy is caused by the eccentric action, which is the "stretch" phase. The stretch phase is longer on slow work with a high volume, which is why lance armstrong's left ventricle is like a cavern compared to Louie Simmon's.
What's more, the order you develop significant hypertrophy matters- significant concentric hypertrophy makes it more difficult to develop eccentric hypertrophy, but the reverse is not true(it's harder to stretch a thick thing, but it's not hard to make a stretchy muscle grow).
Having a big left ventricle basically makes you recover faster, because it makes your heart less effort to supply blood at low intensities.
In addition (Hi! New member here.), you can do cardio for raw endurance. Lifting weights does get my heart going, and an hour of lifting burns a lot of calories and keeps the heart rate comfortably up, but that same solid hour (or two) of interval running from just 3 to 7 MPH (at 1 minute intervals) for a month puts me in the kind of shape that allows me to do moderate-to-active physical activity for nine hours with minimal breaks.
I need that, since every October I perform in a haunted attraction in Vegas (in addition to costuming and tech work) and have a fairly physical performance to get through for each group of patrons. I'm 36, and kids ten years my junior are crapping out before me (a few can keep up) because they don't train.
So again, it depends what you want it for. Remember, it's hard to burn a huge amount of calories with regular running because once you get used to it, humans are very well adapted for it. We're efficient walkers and runners.
For basic heart health, make sure you're checking your pulse rate while lifting to get an idea what it's doing for you. If it's in a good zone, you're fine. But if you want some extra oomph for specific activities, get on that treadmill or elliptical.
Some trainers don't do cardio altogether and just do super sets of other exercises without stopping and that gives full cardio effect. Combat is more anaerobic than aerobic anyway.
Your anerobic-lactic system can generate about two minutes of energy if it's running full bore and you're in very good condition. Your anerobic-alactic system can do between 8-12 seconds(15 if you're loaded to the gills with creatine) at max intensity. You cannot completely regenerate glycogen stores in your muscle in one minute.
Including rest periods, an MMA fight is about 17 minutes in a non-championship bought.
In boxing, it's about 39 minutes in a non-championship bought.
If the sports were primarily anaerobic literally everyone would gas by the second round.
By contrast, a wrestling period is either 2 or 3 minutes depending on the period, and you've got rest between them, and it's against a high resistance(another human beings bodyweight most of the time). That's legitimately majority anaerobic, although still a largeish contribution by the aerobic system.
Saying MMA is entirely anaerobic because of the flurries is like saying soccer is primarily anaerobic because of the frequent sprints, and ignoring the fact that it's over an hour and a half long with fairly constant motion.
If you are doing a weighted circuit training program Ok, if lifting heavy weights why bother. You would do well to get of the treadmill and actually run.
Originally Posted by Coeloptera
I'm not sure i understand here. Why bother if lifting heavy weights?
Originally Posted by mrh80
Also, I use the treadmill because my city isn't very good for paths (I'm in Las Vegas) and also so I can do precise intervals at a specific speed (I am, admittedly, a stickler about that).
Bullwhip, how does doing super-sets for cardio effect performance at a less strenuous activity over a much longer period? Is it as good?
Muscle gain aside, the fittest and most rounded I ever got was by doing crossfit. Eg, 20 squat presses (squats followed through to shoulder press) followed by 100m sprint, followed by medicine ball twists, followed by 100m jog back (recovery period) = 1 set - complete 5 sets. The point being you are mixing up your exercises and stresses on the body rather than focusing one static push pull exercises or running you do strength/speed/endurance type training under pretty severe cardio stress. 3 months of this had my bodyfat levels down from 23% to just under 10% plus I found I had more endurance across the board. It depends on what you are looking for though, I could have gotten bigger doing bodybuilding, stronger doing pure power lifting or better at running by doing treadmill.
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