During the takeoff an athlete generates forces that ultimately result in a vertical velocity high enough to leave the ground. We have shown before, that this vertical velocity reaches 0 at the peak of the jump, and it is easy to show that the velocity is exactly the same during landing as it was during takeoff (but directed in the opposite direction).
Nothing generates more excitement in a basketball game than watching the creativity and athleticism of a player flying through the air and finishing with a slam dunk. It can single-handedly change the dynamic of the game and turn a regular player into a star. Although it helps to be tall or have a natural leaping ability, short people can develop the skills required to perform this amazing athletic feat with proper training and technique.
In this multicenter, randomized, blinded trial comparing dopamine and norepinephrine as the initial vasopressor therapy in the treatment of shock, there was no significant difference in the rate of death at 28 days between patients who received dopamine and those who received norepinephrine. Dopamine was associated with more arrhythmic events than was norepinephrine, and arrhythmic events that were severe enough to require withdrawal from the study were more frequent in the dopamine group. In addition, dopamine was associated with a significant increase in the rate of death in the predefined subgroup of patients with cardiogenic shock.
Similar to building explosive power by jumping over a stationary object, hurdles allow you to practice your leap. Space eight flights of hurdles two feet from each other and aim to jump over each like a pogo stick—basically, as high as you can. Repeat this for 10 repetitions: one flight of eight hurdles equals one repetition. Do this twice per week.

IMPORTANT NOTE: Feb 2, 2019 - I am currently updating the site to have all the articles on the same format and also shooting new HD videos of the exercises in the library. For the duration of the this update I am selling Game Changers at an 80% discount (YES YOUR READ THAT RIGHT - 80% OFF the regular price). Instead of paying $47 you can pick up a copy of just $9. But hurry - this offer will be gone once I finish the updates.


Step 3. Land squarely on the floor on both feet (again, around hip-width apart) and immediately jump as high as you can, straight up in the air. It’s important that you spend as little time as possible with your feet on the floor before the jump—it should be a split-second reaction. Don’t lower down into a squat before leaving your feet. Just let your hips and knees dip naturally, then extend them explosively to launch upward. Drive your arms straight up as you do so.
Try calf raises for an easy way to exercise your calves. In a standing position, push on the balls of your feet while raising your heels so that you’re standing on your toes. Hold this position for 1-3 seconds, then slowly lower yourself back down to starting position. Do 10 reps, or as many as you can, and do as many sets as needed to complete 30 reps overall.[4]
Then, in terms of exercises, you really need to get your whole body stronger. You need to improve your core, and obviously you need to improve your legs. So someone who is interested in jumping higher will find themselves doing a lot of squats. And I would suggest that if someone just started this, they could do a lot of squat exercises without even going to the gym or even bearing weight. You know, get up in their office cubicle and do ten squats. Three sets of ten reps of squats is a good workout.
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I mean, I think you can probably improve your vertical some in a month. I think, though, that for most normal people who aren’t teenagers who are trying out for their basketball team, who don’t have all that time on their hands, I think there’s a much saner way to go about it, where you’re steadily improving your vertical over a period of time. You know, there’s a lot of this kind of slightly crazy, kamikaze, self-improvement type of thing, whether it’s trying to jump higher or do anything else. I’m sure those things work to some extent, but it’s not the way I would have wanted to go about it.
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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.

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.
Barry, who retired from the NBA in 2009, recalled that a few days before our sit-down he “drove out to the Clippers’ practice facility, wearing sneakers and board shorts, just to get my basketball fix in. Between games I pick up a ball and start shooting. In the back of my mind I’m thinking, You’re 42, man; can you still? So I get a rebound, do a little power dribble in the paint and, sure enough, throw it down. I put the ball down and walked out. I can still do that. That’s good.”
Two foot jumpers spend a lot more time on the ground during take-off than one-foot jumpers. This allows them to generate a lot of force through the muscles of the calves, quads, glutes and hips. While one-foot jumpers rely heavily on elasticity and "bounciness", two-foot jumps are more reliant on strength and power. This is one of the reasons why football players are excellent two-foot jumpers - they have really strong lower bodies!
IMPORTANT NOTE: Feb 2, 2019 - I am currently updating the site to have all the articles on the same format and also shooting new HD videos of the exercises in the library. For the duration of the this update I am selling Game Changers at an 80% discount (YES YOUR READ THAT RIGHT - 80% OFF the regular price). Instead of paying $47 you can pick up a copy of just $9. But hurry - this offer will be gone once I finish the updates.
Start on a lower hoop and practice on that, just to get the feel of dunking. Jump height is one thing, but you would be surprised at the number of people that find it hard just to slam the ball into the basket, even if they are high enough. Make sure the hoop is high enough for you to only touch the rim. Different jumping styles and distances from the basket can change your vertical drastically and could be the difference between a rim-block and a slam. Keep progressing and eventually you will see results. Good luck!
The record for the most WNBA dunks belongs to Brittney Griner. As a high school senior, she dunked 52 times in 32 games and set a single-game record of seven dunks.[47] As a standout at Baylor University, Griner became the seventh player to dunk during a women's college basketball game[48] and the second woman to dunk twice in a single college game.[49] In her WNBA debut on May 27, 2013, Griner dunked twice, and as of 2014, has five WNBA dunks, including the first in a playoff game (August 25, 2014).

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.
The things I had going for me: an understanding spouse; a modicum of foot speed and leaping ability, flashed during the occasional Motrin-supported­ pickup game; proximity to one of the best training centers in the world; and, again, an understanding spouse. The forces working against me made for a longer list and included (but were far from limited to) my average hand size and arm length, a lower-back injury that I suffered while playing semipro football in 2009 and my age. I was 42.
Similar to building explosive power by jumping over a stationary object, hurdles allow you to practice your leap. Space eight flights of hurdles two feet from each other and aim to jump over each like a pogo stick—basically, as high as you can. Repeat this for 10 repetitions: one flight of eight hurdles equals one repetition. Do this twice per week.
The dose was determined according to the patient's body weight. Doses of dopamine could be increased or decreased by 2 μg per kilogram per minute and doses of norepinephrine by 0.02 μg per kilogram per minute (or more in emergency cases) (see Figure 1 and Figure 2 in the Supplementary Appendix, available with the full text of this article at NEJM.org). An example of the dose-escalation table is provided in Table 1 in the Supplementary Appendix. The target blood pressure was determined by the doctor in charge for each individual patient. If the patient was still hypotensive after the maximum dose of either agent had been administered (20 μg per kilogram per minute for dopamine or 0.19 μg per kilogram per minute for norepinephrine — doses that have been shown to have similar effects on mean arterial blood pressure12,13), open-label norepinephrine was added. The dose of 20 μg per kilogram per minute for dopamine was selected as the maximal dose because this upper limit was the standard of care in the participating ICUs, in line with expert recommendations14 and international guidelines.15
At the competitive level (i.e., the NFL and NBA combines), vertical leap is measured using a “jump tester”—a tripod with a series of thin plastic sticks one inch apart. If you have access to this equipment, it’s your best bet for getting an accurate measurement. A cheaper, more feasible option is to do your jump next to a wall and mark the highest point you touch with a piece of chalk.
slang To be bested by someone in a spectacular fashion and/or in a way that is humiliating to one. In basketball, to "dunk on" a defender is to perform a slam dunk over them, a move often considered humiliating to the defender. Here's the part of the debate where she really got dunked on&he totally destroys her argument! Sit down, son, you just got dunked on.
I found out that if you practice penultimate two-step jumping practice dunking or just jumping, it gives a MUCH better workout than any one step jumping practice. I was also able to increase my one foot jump vertical by this. I think 2-step dunking is much more powerful and waaaaaay cooler. It is also much safer because you are in more control of your body. Right now I'm 6'1" and can 2-step tomahawk and basically everything off one foot

As far as sequels go, Ninn learned a lesson from his ill-fated follow-up to SEX. Without even a second of flashback footage, he designed SHOCK to surpass LATEX in every respect. It succeeds in some ways. In others, it merely (ha !) equals or falls just below its immediately illustrious predecessor. Simply put, and you can quote me on this, if LATEX blew your mind, SHOCK will turn it inside out !
Some players thinking jumping off two feet to be more comfortable, but it’s different for every player. Take time while you’re practice your jump to find what’s the most comfortable for you. As you’re learning the right way to jump, comfort is crucial because you don’t want to hurt yourself making a move that feels awkward. You want to be comfortable taking off and landing - and that can be done a number of different ways.
If anything came to surprise me about this journey, it was the sheer volume of physical pain involved. I had taken on impressive physical feats before. I had run a sub-3:30 marathon back in 2003 (my first and only attempt) after put­ting in the hundreds of training miles required. I’d done some of the most grueling weight training on offer, most of it either on the beach or at The Yard, a nearby temple of athletic performance where Maria Sharapova, Kobe Bryant and Tom Brady, among many others, have kneeled with exhaustion. But the physical toll of trying to dunk made the marathon and the semipro football and the parenting and everything else I’d ever attempted seem like mere rubber band snaps to the wrist. The lifting didn’t hurt as much as the jumping, the banging of my quadragenarian appendages into the ground, taking off and landing 50 to 200 times a day. My legs never got used to this bludgeoning, never got better at recovering from it, despite my daily foam-rollering, stretching, icing and hydrating. Even on my off days, a quick game of tag with my kids or a bike ride to the park meant daggers in my thighs and a gait like Fred Sanford’s.
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Step 3. Jump as high as you can while flinging your arms forward and overhead. When you leave your feet, only reach up with one arm; you’ll be able to reach a higher point this way versus reaching with both arms. Land softly with a slight knee bend, being careful not to let your knees cave inward. Drive them outward as you did when preparing to jump in the first place.
Also, using the lifting (concentric) phase of these exercises only, rather than both lowering and lifting phases, *might* further improve results. This is partly because lifting phases involve faster rate coding, and partly because this strategy might potentially help avoid optimizing stretch-shortening cycle function for lifting heavy weights, rather than for jumping.
Secondly, in addition to the rate of force development, the size of the force itself produces a negative feedback effect on vertical impulse, because higher forces lead to faster accelerations, which in turn reduce the time spent producing force before take-off. This is *partly* why drop jumps tend to involve higher forces, shorter ground contact times, and yet similar jump heights to countermovement jumps.
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