Kilo Klub Member
- Sep 21, 2010
It feels like the last one? I lay in between sets of 35 lateral raises literally wanting to vomit there is so much lactic acid in my shoulders/arms. By the end of the workout I’m unable to make a solid fist my forearms are so pumped.Also, think the phosphagen energy system is limited to short bursts of energy, it is short bursts of energy from a cellular standpoint, in individual motor units that are firing. So even someone who doing endurance activity (like running for example) is still using the phosphagen energy system to a small extent as individual motor units are working in short bursts, always. The same is true of the aerobic metabolism and low reps. The differences are what is the limiting factor? Inability to supply oxygen fast enough to continue being primarily aerobic, lack of sufficient ATP to stay anaerobic, or inability to clear anaerobic waste products.