someone had to do it wrote:
I have to disagree with this.
As long as proper form and sensible weights are used there is no reason why it should be dangerous. Obviously he wouldn't start by doing super heavy weights.
There is no reason why he should spend weeks doing all of these other exercises before he even touches a weight.
If someone never ran before and wanted to start you wouldn't tell him to do all of these other exercises before he even ran. You would have him start by jogging a few miles at an easy pace. Over time he will run more. And over time the OP will add more weight.
Your are correct that if someone wanted to run they would simply start running, or walking, and be fine. But, simply walking around on two legs for their entire life has prepared them for the next phase, running.
That is a far different scenario than someone who claims to have never lifted [heavy] weights, who wants to start lifting weights in order to improve their running. Unless he's worked on a farm, bailing hay and kicking cows around, I doubt he has the prerequisite strength as a distance runner to surpass a pre-weight room program that would lead him more safely into a program with heavy weights and low reps, as he suggests his goal is.
At his level of strength, I'd imagine proper form and sensible weight would be a body weight squat, maybe a single leg squat, both of which are recommended in many GSM programs.
I just spoke with a runner (15:20 5k) who recently began a "weight training program" and thankfully started light. His first day he did 15 lunges on each leg (5 in each direction), and was noticeably sore the next day. 15!!! He was a former basketball player and had lifted weights in the past but not within the last few years. For him, and many other distance runners like him, GSM workouts using body weight provide the appropriate "weight" and properly introduce the body to that new(ish) range of motion while under stress.