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!
For improving vertical jumping ability, the back squat and jump squat have been used for many years with great success. Depending on the exact force-velocity profile of the athlete, either back squats or jump squats should be effective for improving vertical jump height. Even so, exercises that shift the load towards the center of mass of the body, such as hex bar deadlifts and weighted vest jumps could be superior.
The player approaches the basket and leaps as they would for a generic dunk. Instead of simply dunking the ball with one or two hands, the player allows their forearm(s) to pass through the basket, hooking their elbow pit on the rim before hanging for a short period of time. Although the dunk was introduced by Vince Carter in the 2000 NBA Slam Dunk contest, Kobe Bryant was filmed performing the dunk two years earlier at an exhibition in the Philippines.[22] Colloquially, the dunk has a variety of names including 'honey dip', 'cookie jar', and 'elbow hook'.
Cameras of that era were too crude to capture the split second when the rules of both Newton and Naismith were bent, so it was fortuitous that New York Times writer Arthur J. Daley was at the Y that day covering the tournament that would decide which Americans sailed to Berlin for the Olympic debut of the 45-year-old sport. This new “version of a lay-up shot,” Daley wrote, “left observers simply flabbergasted. Joe Fortenberry, 6-foot-8-inch center . . . left the floor, reached up and pitched the ball downward into the hoop, much like a cafeteria customer dunking a roll in coffee.”
Add some flair with a double-pump. Suggesting you're so high you could dunk it twice, in the double-pump dunk you bring the ball back down to chest level at the apex of your leap, then force it back up to slam it with authority. Some notable players, Tracy McGrady among them, would do this regularly while spinning in the air, doing a 360 dunk variation.
In basketball, the ability to jump high can be pretty important, especially for layups and dunks. Thus, it’s no surprise that many people who play basketball, either professionally or just for fun, want to be able to jump higher to improve their game. Luckily, by performing certain exercises, losing weight, and perfecting your technique, you can significantly improve your vertical leap and jump higher in basketball.

The defining characteristic of the depth jump is that the jump is preceded with the strong eccentric (negative) muscle action caused by dropping down from a raised surface, as opposed to a standard box jump where you start on the floor. This makes the depth jump a true plyometric movement, where the muscles are stretched suddenly (by the impact of the landing), producing a powerful shortening of the muscle fibers.
Janik was available by text whenever I needed him, like my very own dunk training app. The important thing, he said, was to work out hard and smart. When my knees or back were sore, he advised lowering the weight for a few sessions and eliminating depth jumps. "Listen to your body," he told me. And I did: I took a day off here or there if I needed it; I added more weight when I felt good. When, after five weeks, I started to worry that I wasn’t going to dunk again, he kept me motivated. "Leg strength is the key. Squat deep. Ass to grass," he told me, unsympathetic to the known fact that squats are fucking terrible.
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)
You will need to get at least that high to be able to snap the ball into the basket. If you're relatively short, then you have your work cut out for you. Developing a one-handed dunk requires less vertical ability than a two-handed dunk, and, for most players, jumping off of one foot from a running start makes it easier to jump high enough to dunk. There are many things that you can do to work on your vertical leap.
This phase begins with the athlete at the bottom of the jump, just as he begins exploding upwards towards the takeoff. The force-time graph shows that the athlete reaches peak forces shortly after reaching the lowest point of the jump. He then further accelerates until his feet leave the ground and there are no more ground reaction forces measurable.
Technique Tip: Determining how far out in front of you to place your front foot may require some trial and error. At the bottom of the motion, your front knee should be somewhere above your heel to mid foot. If your knee is behind your heel, your foot is too far forward; if it’s out over your toes, step out further. One trick to find the right distance is to start in the bottom position and adjust your stance from there. Then stand up and have someone hand you the dumbbells.

The vertical jump is defined as the highest point that the athlete can touch from a standing jump, less the height that the athlete can touch from a standing position. The measurement of the jump is flawed if the athlete is permitted to take one or more steps before jumping, as the athlete will convert some of the energy developed in the step taken into the force of propulsion that generates upward lift. Basketball has numerous legends and other urban myths concerning the seemingly superhuman leaping ability attributed to certain players; one such player, former University of Louisville star Darrell "Dr. Dunkenstein" Griffith, was reputed to possess a 42 in (1 m) vertical leap. It is likely that the average National Basketball Association player 6 ft 6 in (1.97 m) or shorter has a vertical leap of between 25 and 30 in (0.63 and 0.75 m); taller and heavier players will usually not be able to jump as high.

During the 2009 NBA dunk contest, Howard had a separate goal brought onto the court, and the rim was noticeably significantly higher than a standard goal. Howard, after going into a 1950s-era telephone booth and again fashioning the Superman attire, caught a pass from Nelson and easily completed a two-handed dunk on the higher goal. While this was not performed for record-setting purposes, the dunk received a perfect score and a warm response from the crowd, in part because of its theatrics. Also in this contest, 5'9" guard Nate Robinson wore a green New York Knicks jersey and green sneakers to represent Kryptonite, playing on Howard's Superman theme. He used a green "Kryptonite" ball, and jumped over the 6'11" Howard prior to dunking. This dunk and the theatrics could have won the competition for Robinson, who was voted the winner by the NBA fans. Robinson then thanked Howard for graciously allowing him to dunk over him, asking the crowd to also give Howard a round of applause.
In summary, although the rate of death did not differ significantly between the group of patients treated with dopamine and the group treated with norepinephrine, this study raises serious concerns about the safety of dopamine therapy, since dopamine, as compared with norepinephrine, was associated with more arrhythmias and with an increased rate of death in the subgroup of patients with cardiogenic shock.
Exactly which muscles are most important for improving the vertical jump is still relatively unclear, and may differ between individuals. Clearly, the spinal erectors, hip extensors, quadriceps, and calf muscles are all involved in the jumping movement, and the hip extensors and quadriceps are likely the prime movers, but which of the hip extensors is the primary muscle is very unclear. Importantly, since force production is required right up until take-off, the lower body muscles must produce force from moderate through to short muscle lengths, which differs from the barbell back squat exercise.
Dunking exposes you to some extra risk of injury. First of all, you can get low-bridged or get your legs tangled up with defenders near the hoop, causing you to fall awkwardly from a significant height. You can also throw yourself off balance by trying to hang on the rim and slipping off, resulting in awkward falls. If you are in heavy traffic on the dunk, then being able to grab and hang on the rim until the clutter beneath you clears is a safety technique. If you are in the clear on a dunk, then avoiding hanging on the rim at all is the recommended safety technique (It's also a technical foul to hang on the rim in that situation). Whatever the situation, you need to come down with control and balance. Ankle, knee, neck, and head injuries await those who fail to control their momentum after a dunk.
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.

Bodyweight squats are a great way to practice your vertical jump because your squat stance mimics the lowest crouch position of your vertical jump. Incorporate these into your routine twice every week, increasing the number or sets and reps as you improve. After you become comfortable with regular squats, consider adding jump squats to your routine.
I'm 5"11 and 12 years old, and i'm able to touch the rim, but it's very inconsistent. like 50% of the time I can wrap my 3 biggest fingers around it, or i dont touch it the other 50% of the time. I've been training for about 4 months, doing calf raises every day until they cramp, and everyday i try to touch the rim at my gym or school or at any court. I found out i could touch the rim 2 days ago, but is there any way to add 7 inches to my vertical instead of doing thousands of calf raises again, because i really want to be able to dunk by 8th gradr
Robert Cole, de The Times dijo: "Klein se burla del "complejo de desastres del capitalismo" y las ganancias y las privatizaciones que van con él, pero no proporciona una crítica convincente -que argumente sobre los principios del mercado libre-, y sin ésta, La doctrina del shock desciende en una maraña de historias que a menudo son preocupantes, a veces interesantes y, en ocasiones, extrañas".17​
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

Where it (relatively) falters is in the oft gratuitous sexual content, occasionally drawn out beyond all reason. This holds particularly true of Million's trawl through the mind's red light district full of tempting whores like Orientals Kia and Tricia Yen and Caressa Savage, abusing herself at length with a scary looking dildo. At best, the sex is still positively riveting though with sweet Shayla subjugated to a pair of fearsome gargoyles (T.T. Boy and Vince Voyeur in amazing body make-up) and a group of pony girls - remember them ? - at film's climax.

I think it’s the sort of thing that a lot of kids probably fantasize about, me included. Just like you might want to become an astronaut or something like that. I was always one of the tallest kids in my class, but I never really tried to dunk. And so as an adult, you start wondering a little bit about what sorts of things you left on the table, that you never really tried your hand at. And I got it into my head that I’d pick up this childhood fantasy of mine and see if I could dunk.

A study was carried out in 2015 to show the effectiveness of different shot types, including slam dunks. The study was carried out across five different levels of basketball (NBA, EuroBasket, the Slovenian 1st Division, and two minor leagues). Overall the study showed that slam dunks were a very effective way of scoring in the game of basketball, particularly in the NBA, which had the highest dunk percentage in the study.[37]
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.
I gave myself ten weeks to dunk again. It wasn’t going to be easy: I figured I’d need to add five or six inches to my vertical in order to dunk a regulation basketball. I was in half-decent shape, and at six-foot-three, I had height on my side. But I had a few things other than age working against me—namely feet that had flattened over the years to canoe paddles, and an ankle injury I’d never properly rehabbed.
En 2018 la Radio Televisión Suiza invitó al colectivo Bande à part, que integran los cuatro reputados cineastas Ursula Meier, Lionel Baier, Frédéric Mermoud y Jean-Stéphane Bron, a llevar a la ficción un suceso que les hubiese marcado profundamente. El resultado es esta mini-serie antológica que retrata cuatro crímenes atroces que conmocionaron a la sociedad suiza, sobre todo por la implicación en ellos de niños y adolescentes. 
When performing a vertical jump, the athlete exerts force at the low back, hip, knee, and ankle joints. The spine flexes as the athlete squats downwards, and then is extended by the spinal erectors over the course of the jump. The hip extensors (gluteus maximus, hamstrings, and adductor magnus) work to move the trunk and the thigh apart, which pushes the torso up and backwards. Meanwhile, the knee extensors (quadriceps) contract to extend the knee, and the calf muscles contract to move the shin backwards, towards the vertical.
Often times, basketball players have used one-leg jumping their whole life. It's just a much more natural movement because it's used every single time someone goes for a layup. On the other hand, volleyball players are often used to two-foot jumping because it is the most common way to jump when trying to block or spike. So, if you have all the suppositions to be a great two-foot jumper, but you get barely of the ground this way, it's probably because of a lack of technique.

Even so, the back squat does differ in important ways from the vertical jump. Primarily, it involves a much greater trunk extension turning force, because of the barbell weight on the upper back, and this likely contributes to the more hip-dominant nature of the squat over the vertical jump. Secondly, it is often performed to a deeper depth, which can alter the relative contribution of each of the hip extensors to the movement, because of their different leverages at each joint angle. And thirdly, it only involves accelerating up to midway through the movement, while the vertical jump involves accelerating right up until take-off. This also affects the relative contribution of the hip extensors, as force production will be required in the jump even when the hip is nearly fully extended, while this is unnecessary in the squat.
Hi im Deontay i been trying 2 dunk ever since 7th grade and i know i been improveing since 7th grade i could touch the bottom of the backboard and i guest i was 5'6 or 5'7 at the end of the 8th grade i started exercising by having a 150 pound bag of cement on my shoulders and started squats and i try 2 15 wit a extra 5 at ever exercise i do but i still c very little effects so when went 2 my last day of school i could touch rim easily but the rim was about 8 foot and i was 5'9 now im a freshmen at my high school and i grip 10 foot rim wit my fingers not wit my hands but wit my fingers and im at 5'10 and im only 15 and i think my growing sprout is kicking in but anyway i want 2 know how can i get the ball over the rim and pound it in like d.rose king james and blake griffin i could grip the ball all i need 2 know is how 2 jump high enough 2 have that ball above the rim and pound it in will u please help
The primary end point of the trial was the rate of death at 28 days. Secondary end points were the rates of death in the ICU, in the hospital, at 6 months, and at 12 months; the duration of stay in the ICU; the number of days without need for organ support (i.e., vasopressors, ventilators, or renal-replacement therapy); the time to attainment of hemodynamic stability (i.e., time to reach a mean arterial pressure of 65 mm Hg)16; the changes in hemodynamic variables; and the use of dobutamine or other inotropic agents. Adverse events were categorized as arrhythmias (i.e., ventricular tachycardia, ventricular fibrillation, or atrial fibrillation), myocardial necrosis, skin necrosis, ischemia in limbs or distal extremities, or secondary infections.17
High Reach Jumps – with your feet shoulder width apart, bend down into a comfortable squat position and then jump up as high as you can reaching for the sky! This drill is great to do under the basketball goal or near a wall so you can have a visual of how high you’re jumping – or how low you jump once you start getting tired. Try to reach the same height through all your reps.

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.
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. 
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