What makes you think resistance exercise is an aerobic challenge in any way? Enlighten me because my education has apparently all been a lie.

Maintaining a high heart rate of what 60-80% of your max is the definition of cardiovascular exercise. I would like to see how you're going to tell me that doing high reps with little rest would keep your heart rate low.

cloudkicker I know you know your shit, but this is what I was taught as well, am curious what is wrong about it.

increased HR is not a good criteria for identification of "cardiovascular exercise" or a work range that is dominated by the aerobic energy system. in typical cardiovascular exercise, your HR increases *fairly linearly with oxygen uptake, and the intensity of exercise, for example in a VO2max test you would be expected to reach HRmax, VO2max and peak power output all at the same time (should be straightforward logic as a vo2max test identifies maximum level of aerobic power), but when you're performing resistance training or circuit training, your vo2 doesnt climb linearly with your HR, in fact heart rate will increase nearly twice as fast towards its peak value compared to vo2, because oxygen demand isnt the trigger for an increased heart rate in this case. of course oxygen uptake by skeletal muscle will increase slightly to provide for ADP/Cr rephosphorylation but the majority of your working ATP is not sourced aerobically. while performing a resistance circuit you may record HR values upwards of 140, 150 or even 180 which is a great portion of your HR reserve but oxygen uptake, thus oxidative phosphorylation will remain relatively low.



the cardiovascular system isnt really performance-limiting except maybe in those individuals with circulatory disease. neither is respiration in a healthy individual, the greatest challenge is the muscle's ability to extract o2 from the blood.

also i should point out that cardiac output and respiration are more likely driven by excessive production of metabolites in the blood rather than a demand for oxygen. its more about blowing off bad things than bringing in good during resistance training.

My thinking of crossfit being cardio isn't too far off.

http://www.ncbi.nlm.nih.gov/pubmed/23439334

so much dis. I remember when I first asked for advice. Half said lifting would stunt my growth, the ones that gave advice were like don't drink milk, only green tea. Eat brown rice and chicken breasts all da time 5-6 meals of it a day.
Take your post workout protein and for preworkout take creatine.

This post was edited by tommyd323 on Jul 8 2014 05:18pm

I crossfit but I don't do Paleo I don't hate on the diet but I don't like it all its not beneficial for making gains and getting bigger, it's more for the people who really want to burn fat and also who don't know how to or are too lazy to count calories.
I tried it for few days wasn't liking it.

But if you are looking for crossfit workouts just do Leg/Back/Shoulders/Chest work outs on diff days or Mix it up together

Fairly easy to make up your own workouts if you've done crossfit before.

Nothing works in discretes in exercise, some minor stimulation of oxidative metabolism in untrained individuals will produce results but that won't be challenging for long
Try training a mildly advanced endurance runner with crossfit and see how they perform in races.

lol

That's like taking someone trained in running and tossing their ass in the ocean and expecting them to be Michael Phelps. You've kinda missed the original point, which was that if his only goal is getting his lifts up (numbers wise) he should focus on lifting in general instead of crossfit.

That's like saying his ONE goal is to make an omelette. But instead of just buying eggs and cooking them, he bought a baby chick, and is growing it until it lays some eggs, then he'll cook an omelette.

I mean why use correct form and legitimate weights, when you can do kipping pull-ups and use massive plates that weigh 2.5 lbs? That's just silly obviously.

This post was edited by Snazzy on Jul 9 2014 04:01pm