Piper –
Good for you! Sounds like you are improving your overall fitness. But too much of a "good" thing can be bad. Moderation in all things :)
Jennifer said,
"Major point here: You do not built endurance with strength training. You build endurance with endurance training and muscle force with "strength" training. If you lift for increased power production, you will not improve endurance (this is why sprinters are not marathon runners, and huge lineman do not run the ball in for touchdowns). Look at the different builds of cyclists in the Tour de France: the climbers are all lithe and skinny…that is endurance training; the sprinters have huge legs…that is power. The two are not the same and the muscles are not at all trained the same. While improving a muscle's force production will make stepping up a 15 inch boulder with a 15 pound pack easier…it will NOT change how many times you can step up that step. That's where endurance training (like Dave's comment about climbing stairs) comes in…….
but, the fact is specificity of training rules the day. If you want to run fast, run fast. If you want to power up a steep ascent, power up steep ascents. And if you want to hike for 30 miles/day, then you need to hike 30 miles a day. The other stuff can make minor differences, but in the grander scheme of things not all that much."
Spot on. Weight lifting for speed/power. That is how Galen Rupp (10K silver medalist 2012 Olympics) was able to run the final lap in a 13:22 5K, in 52 seconds last year. After he had the endurance, the weight lifting was done for speed when it was needed. Rupp does lift 2 or 3 days a week. We will see him move up to the marathon, and expect him to be very competitive. But most of his work is running, not weight lifting; because he is a distance runner.
Tom,
I now know why I like you. My favorite workout on the track was 440 yard intervals (pre-socialist measurement system). Everyone hated those days, except for me.
These days my goal is to wake up above ground each day, and then go for some sort of a walk. Seems to work too. :)

