4. verb By extension, to achieve a forceful, dramatic success or accomplishment handily or easily, often at the expense of someone or something else. Sometimes hyphenated. The incumbent president has slam dunked his opponent in every televised debate so far. If we can slam-dunk this proposal, we'll get enough funding to see us through to the end of next year.

Other binary end points were analyzed with the use of chi-square tests, and continuous variables were compared by means of an unpaired Student's t-test or a Wilcoxon rank-sum test, as appropriate, with the use of SPSS software, version 13.0 (SPSS). All reported P values are two-sided and have not been adjusted for multiple testing. The study statistician and investigators remained unaware of the patients' treatment assignments while they performed the final analyses.
My early efforts were clumsy. Jumping willy-nilly as high as I could, with no regard for technique, I occasionally felt my finger graze the underside of the rim. Most times I did not. What I did feel early on was a firm self-awareness­ that I was a two-foot jumper (like Spud Webb, Dominique Wilkins, Vince Carter and myriad NBA Slam Dunk champions with whom I have nothing else in common athletically) as opposed to a one-foot jumper (see: Julius Erving, Clyde Drexler, Michael Jordan). This meant that my best shot at dunking would be to elevate like an outside hitter in volleyball—that is, by stepping forward with one foot, quickly planting my trailing foot next to it and then propelling myself upward off both.
Hi I'm 14 turning 15 this year with a height of 5'8-5'9 and a standing reach of 7'5. Right now I am 190 pounds.I know I'm not physically fit. I can touch the net by just standing and jumping but not the rim. I really want to dunk since my friends can reach almost the rim while i can't even if I'm taller than them. Is it an impossible dream to dunk before my high school life ends? Also it will be nice to hear on how to lose weight. Since people tease me on how fat I am. But i am currently trying to lose weight and lost 14 pounds already. The only problem is my asthma which is making it hard for me to do physical activities.
For one-footed jumpers, the ball is generally transferred to the non-dominant hand just before or upon take-off; for two-footers, this transfer is often delayed for milliseconds as both hands control the ball to prevent dropping it. Once airborne, the dunker generally transfers the ball from non-dominant to dominant hand beneath a raised leg. Finally, the ball is brought upwards by the dominant hand and slammed through the rim.
Important Update! – I have been receiving a few emails/comments on players tracking their jump during the course of their program. Please understand that what you are doing when completing a jump program is breaking down the muscle.  You aren’t going to see improvements mid-week because the muscle hasn’t healed properly. That’s why I suggest only checking how much you’ve improved at the end of each rest week. Rest is just as important as the routine. 

The force-velocity relationship during muscle shortening occurs because the number of simultaneously attached crossbridges between the myofilaments inside the working muscle fibers determine the amount of force that a fiber can produce. The number of attached crossbridges at any one time is dependent upon the fiber shortening velocity, because the detachment rate of the crossbridges at the end of their working stroke is higher at faster shortening speeds.
When approaching your dunk, run up with tall form and on your toes. People tend to lean forward to gain speed, this is wrong. Lean back and you will see the difference. Also when running, start off slow then gain speed into the jump. Never slow down. When you are at the poin to jump, take small strides and don't drag your foot. You want to have your front leg straight with your entire body. Again, stay leaning back some. Explode up. Keep practicing this technique. I am doing it and i went from a 32" running vert to a 38". that is how much form can do with your Dunk. (NOTE: this is for one legged jumpers)
Keep that in mind, and progress slowly. A mini basketball is a little more challenging than a tennis ball, but it's easy to palm and that helps. See if you can get high enough to get your hand over the rim--almost up to your wrist--so you can stuff the mini ball. If you can't throw it down with a little authority, a bigger basketball won't be any easier.
Ok I just turned 18 2 months ago and I'm 6,2 and weigh about 155 and I'm very athlectic I've played basketball ever since 3rd grade so I'm very familiar with tecniques and fundamentals I don't play as much as I used to but I can still get rim on my thumb no prob but can't dunk.what can I do bc I wanna jam on my bro. Also being noted that I've dunked about 2 Times but were sloppy plz help

To perform two-foot dunks, jumpers bend their knees very deeply and spend a lot more time on the ground loading the jump. This increased time during takeoff is useful because it allows the athlete to transfer force into the ground thereby improving height. Using this approach makes it more difficult to transform speed into jump height making a fast approach far less useful than in one-foot jumping.

Seventy-nine years later, the feat that Daley unwittingly named “the dunk” still flabbergasts. But how it felt to Fortenberry, a pioneering barnstormer whose name we’ve forgotten despite the gold medal he and his teammates won in 1936, remains a mystery. “He never talked about being the first person to dunk and all that,” says 65-year-old Oliver Fortenberry, the only son of Big Joe, who died in ’93. Indeed, the famous dunkers throughout history have been either reticent on the subject or unable to adequately express how it felt to show Dr. Naismith that he’d nailed his peach baskets too low. After more than a year of rigorous research on the subject, I’ve concluded that the inadequacies of modern language—not the ineloquence of the dunk’s practitioners—are at fault. In the eight decades since Fortenberry rocked the rim, words have repeatedly fallen short in describing the only method of scoring, in any sport, that both ignores one of its game’s earliest tenets and, in its very execution, carries a defiant anger.

The days and jumps and deadlifts and calf raises rolled on, rep by rep, protein shake by protein shake. Six months became seven, then eight. To protect my right hand, I began wearing a canvas gardening glove with the fingers cut off. It soon became stained with blood—the equivalent of Curt Schilling’s bloody sock, but with one-millionth the significance. The rims where I toiled belonged to me now, such that I barely noticed the toddlers wobbling nearby, the skateboarders swirling around me as day turned to dusk, the elderly couple ambling arm in arm, looking for all the world like my wife helping me to the shower on the morning after a double day.
Less helpful was my early realization that I was a two-hand dunker, in light of my inability to palm a basketball on the move. It’s common knowledge among dunkers that throwing down with two hands is typically harder than with one; the former requires a higher vertical leap. So as I flailed haplessly at the rim last spring with one hand, I felt not just discouragement but also fear. Fear that I would miss big chunks of my kids’ ninth, sixth, and first years on earth just so I could come up embarrassingly short on a senseless goal that my wife and I would later estimate consumed 15 to 20 hours a week, on top of my normal work hours. And fear that I had shared this idea with my editors way too soon.
Single leg jumping with it's high impact forces and dependence on the elasticity of muscles and tendons works best for young athletes. With increasing age, the tendons and muscles lose their elasticity and springiness and the risk of injury gets higher and higher. That's why a lot of basketball players start to rely more and more on their two-foot jump as they get older. And the winner of the Olympic high jumping contest are almost always below 30.
High-Reach Jumps – Are similar to tuck jumps, but instead of brining your knees to your chest, you just reach as high as you can. This is done best under a basketball ring or near a wall so that you can tell how much lower your reach becomes as you fatigue. Try to reach the same height through all repetitions. if you don’t have anything to measure against, that’s fine. Just jump as high as you can each repetition.