A couple of things I want to address here:
7starmantis said:
More than building mass or lifting weights, this person should be in there fighting. High cardio is the key, very high.
Lifting weights works your cardio vascular system just as hard and just as thoroughly as a dedicated 'cardio' workout does. The only difference is that it also increases mass and size. Weights are detrimental where large muscle mass is a disadvantage, such as in the pool or on distance runs, but otherwise it is
always and advantage. It doesnt limit your movement or flexibility (except in very extreme Mr Universe style cases) and significantly increases your strength, mass, stability, and natural 'armour'.
In short, for martial arts and self defence, you are almost
always better off lifting weights than doing a dedicated cardio workout. Since weightlifting is limited by recovery rates, there is still a place for cardio workouts, and many low impact isolation exercises (skipping rope, crunches) and many SD or MA specific exercises (speed ball, patterns or sparring) are definate 'cardio' workouts as well. It certainly has a place, I won't deny that. But if you are deciding to spend a fwe more hours a week at the gym, look at weightlifting before the treadmill or the bikes.
7starmantis said:
If you must use weights, I would recomend lower weight with higher reps.
I disgaree. If you are going to use weights, you will get the best results from starting at a medium weight, and increasing per set. Lifting light weights works your heart and lungs, but doesn't increase the mass of the muscle group you are working. Since lifting heavier will work your heart and lungs just as much, and increase the muscle mass as well, there is no reason not to do it.
coungnhuka said:
a good way to decide the amount of weight you what to lift is to max out. a good safe max out is the most amount of weight you can lift 10 times perfectly. and then lift 1/3 of that weight.
Nearly right. First, you need to find your ten rep max, as CNK says above. Then, you need to work out your set weights. This is how I do it.
TRW = ten rep weight
First set - 10 x TRW -20%
Second set - 10 x TRW -20%
Third set - 8 x TRW -10%
Fourth set - 6 x TRW
Fifth set - 4 x TRW +10%