Having been familiar with an exercise protocol that emphasizes very slow movement, Zickerman's book as well as that of Frederick Hahn's, to me anyway, revealed nothing new. Rest assured, this stuff works and works well!
I get a kick out of the negative reviews, the one and two star types. The reader from Atlanta, Georgia ("Gruelling") makes me chuckle. Claims to have tried it for 3 months and gave up! What, you were looking for a quick fix?? The changes evidently were not "dramatic" enough for them. Also, their absurd statement that they have seen people at their gym doing super slow for "years" (unlikely as so few people really know about the pioneering work that Ken Hutchins did in this field), and that "while not overweight, not exactly super toned either". Please, did it ever occur to you that they might have less than optimal eating habits??!! This person appears to be happy living in the gym, and good luck to you in the future when your overuse injuries from aerobics start to act up! How about the reader from Texas ("Not even close"), who claims that this is only for couch potatoes (huh??) and that the science is flat out wrong. Thanks for the laugh! Thankfully, there was a 5 star review from a personal trainer, as I would be inclined to think that the negative stuff comes from trainers and/or gym owners who have a vested interes in people setting records for gym attendance.
My background? OK, years of lifting, and I mean serious squatting and deadlifting that made me big (5'7", 220 and 18% BF)and "strong" (how functional was that strength is what I always wondered). Enough was enough, all the little aches and pains and for what? Quit lifting two and a half years ago, started hiking, swimming(an exercise which I have become good at and love), and playing some recreational hockey. My only strength training was good old-fashioned bodyweight exercises in the privacy of my home. Yup, multiple variations of pushups, chin/pull-ups with a bar over the doorway, etc. Maintained all my size and just felt better. Who cares whether I could still squat 365 for reps or deadlift close to 500 for a single. Not I at that point.
6 months ago, headed back to the gym for once a week workouts using this book as a guide. Brutally tough, but oh so satisfying. I perform 6 exercises, one set each, on Hammer machines. Actually, only every other Saturday am I in the gym. I alternate with a bodyweight workout at home. Try 10 second up/10 second down pullups, an experience you will not soon forget. Along with cleaning up my eating habits (the nutritional advice in this book is worth the price alone as it is so practical and doable and does not smack of extremism), I am down to a muscular 197 (11% BF). I am now asked if I compete as a bodybuilder. Whatever. All I know is that I am functionally strong, have a physique which causes people to do double takes, and enjoy a balanced life. All this with 25 minutes a week of resistance work.
With all due respect to Frederick Hahn, I prefer Zickerman's treatise, as it is less "extreme", and he sees nothing wrong with aerobics in moderation, as well as some stetching. His humor makes for an easier read as well.