Here we are, the final summit push of our strength training blog.  Of course, it involves the most grueling and most fun phase of training-- Strength Endurance.  This is where it all comes together for an alpinist.  Strength Endurance encompasses your ability to ascend and descend under load (the load is your pack) all day long, while executing intermittent powerful movements, and quickly recovering from those movements.  Referring back to our riverbed analogy from part 3, once you have taught those riverbed hoppers in your neuromuscular system to travel efficiently (power phase), and then you recruited a lot of them (strength phase), you can finally train them to keep going for miles and miles while utilizing fuel as economically as possible (strength endurance).