The loading phase of a vertical jump should look very similar to a Romanian dDeadlift—the only difference is the arm position. In this position, the weight is on the toes. The knees and ankles are slightly bent, the chest is leaned forward and the arms are extended just past the hips. In this position, the athlete can generate the most amount of vertical power.
Scaling the back squat for beginner-level athletes generally entails sticking to lighter loads (even bodyweight only to start) while learning proper technique. Goblet squats with a kettlebell or dumbbell can be used to practice form, but keep in mind that goblets are an anterior (front-loaded) variation and won’t directly mimic the mechanics of the back squat.
Four times a week, from April through October, I embarked on 90-minute explosive weightlifting sessions based on the years I’d spent working as a strength coach to club, college and professional volleyball players. Squats, squat jumps, deadlifts, lunges, box jumps, cleans, sprints. . . . Three or four days a week I visited one of my local blacktops, where I tried to dunk tennis balls on 10-foot rims or throw down basketballs and volleyballs on lower ones. By May 3—one month in—I could dunk a tennis ball on a 9' 10" rim. I considered this a better-than-good start, not realizing that compared to dunking a basketball, this tennis-ball jam was akin to a child scrawling the diagonal line that begins a capital A on his first day of learning the alphabet.
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.
Then you need to hold the chalk in your right hand, and then you need to jump from the same starting position (without a run-up). To do the jump, you’ll need to flex (bend) at the hip and knee joints and use your arms for momentum. At the top of the jump you’ll mark the wall (or chalk board) with the chalk. The score for the jump is the difference between the standing height and the jump height (in cm). The highest of three separate trials is recorded as your max score.
I am in grade 10, 15 years old and 6'1 3/4". I have big hands and can palm the ball...I could touch rim in grade 8 and getting closer to dunking everyday now..it literally takes no effort to touch rim now but whenever I go for the dunk I get the ball above rim easily but have trouble getting that wrist motion to actually throw the ball in the hoop...and help?

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There's another twist that will really make you reconsider all that you have just witnessed, somewhat akin to the final revelation in Terry Gilliam's 12 MONKEYS. Apparently definitive at first, the ending proves considerably more ambiguous the more it sinks in. Initially introduced as a potential Savior, a paragon of good if not virtue, Stevens has transformed into more of a devil this time, showing his true colors once he has entrapped a defenseless soul in the spider's web of his omnipotent mind. The "message" seems to be that, in the not too distant future, evil rules simply because we have stopped believing in concepts like good and evil, allowing free reign to the strongest and worst of the two. The key to understanding SHOCK lies in one of the most memorable movie lines from THE USUAL SUSPECTS as Kevin Spacey's unforgettably named Verbal Kint suggest that "the greatest trick the devil ever pulled, was convincing the world he didn't exist." I rest my case. Over to you...
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.
A vital part of basketball training is improving your vertical leap. As an athlete, you should be incorporating exercises into your basketball drills and fitness training that focus on increasing muscle strength and leg speed. Simply put, you won’t turn into Vince Carter or Andre Iguodala overnight, but learning how to work the appropriate muscles on a daily basis will go a far way towards improving your overall vertical.

The vertical jump involves coordinated spine, hip, knee, and ankle extension to produce force in a vertical direction very quickly, while the muscles are shortening through to a very short muscle length. Since the time available for producing force is long compared to other athletic movements, this reduces the importance of rate of force development. Yet, the force-velocity relationship is the primary determinant of the amount of force that can be exerted at a given movement speed. Therefore, maximum force, velocity, and the force-velocity gradient all affect vertical jump height.
these shocks make a big difference in handling and ride on the2015 4wd F250. This will make the suspension work rather than the whole vehicle simply shuddering up and down over small bumps and holes in the road. Tires stay in contact with road, suspension moves, you and the seat stay still, what a concept! OEM shocks don't even move once compressed, pityful. You will need an 18 mm wrench or socket for lower shock mount bolts and a 21 mm open end, box end or deep socket for the top mount nut and a 20mm or adjustable wrench for the shaft bolt on the top mount. Once the old shocks are off, you need a 19mm open end or socket for the Bilstein top mount nut and you hold the shaft from moving with a hex key, in my experience I didn't really need that but you may want to. Check the top of the shaft you'll see a hex hole up there, seems like it was a 6mm but don't hold me to that. Forget any jacking, removing tires, etc to do this it isn't necessary, and much safer with wheels on the ground while you are under there. If you need some space I drove the wheel I was working on over a 2x12 and that gave me a little height to work with. I wasn't in the mood to fool with jacks, jack stands and all that. No need to. Just crank the steering wheel over away from the side you are working on and you'll have plenty of room. The only issue is after attaching the lower shock mounts using the OEM 18mm bolt/nut, you need to compress the shock about 3" to get it into the upper mounting hole. I used a common tie down racheting strap for this job. I hooked one hook to the chassis right under the lower shock mount bracket on the truck and after adjusting the strap length I put the upper hook around the top shock rubber grommet and washer (lower one already installed now, put upper ones on after shock is in place, of course). At this point you just crank the rachet on the strap until the shock compresses a few inches and shove the shaft under the mounting hole, release the rachet and up pops the shock into place. Put on upper grommet and washer, tighten 19mm nut and presto! IF the shaft turns while you tighten this nut hold the shaft still with the hex key mentioned earlier. Your truck is now a better place to be. Also just tighten upper nut until the grommet fills or slightly goes outside the washer, don't crank it down and flatten the grommet. If you aren't sure look at the OEM arrangement for an idea on how tight to go with that nut. Happy motoring !!

i am 6 foot 2 inches tall, i am in the 8th grade, and i am 13 years old going on 14 in september. I discovered on May 15th that I could hang on the rim at my school with two hands by jogging about 3 steps very very slowly and jumping off both of my feet. I have dunked about 3 times before, but the last couple times I tried, I got "hung" and sent backwards but I managed to keep balance on the way down due to my height. What is my problem? Also after I attempt to dunk about 4 times in a day my shin begins to hurt. Why does this keep happening?


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The two-hand backscratcher finish can exert tremendous force on the basket. In 1979, Darryl Dawkins twice shattered NBA backboards with tomahawk dunks leading to a quickly-enacted rule making it an offence to break the backboard.[citation needed] Technology has evolved to adapt to the increased strength and weight of players to withstand the force of such dunks, such as the breakaway rim (introduced to the NBA in 1981) changes to the material used for the backboards, and strengthening of the goal standards themselves.
The force-velocity profile can be described by three elements: (1) maximum strength, (2) maximum velocity, and (3) the slope of the force-velocity gradient, because this is what determines whether the balance between force and velocity is optimal at the desired speed for force production. Each of these factors is an independent predictor of vertical jump height.
With less than 2 minutes remaining, and the Grizzlies leading, 72-70, Pistons power forward Henry Ellenson appeared to have an easy dunk to tie the game. — Vince Ellis, Detroit Free Press, "Jaren Jackson Jr.'s weary Sunday caps fabulous NBA Summer League week," 9 July 2018 The high-energy guy in Game 1 was JaVale McGee, who scored a couple of times but also had a wide-open dunk blocked by the rim. — Bruce Jenkins, SFChronicle.com, "It was a grim scene inside the Cavs’ locker room after Game 1 loss to Warriors," 1 June 2018 When Bleacher Report posted a photo on Instagram about Wade wanting LeBron to sign a photo of their iconic pass and dunk in Miami, Chalmers chimed in on the comment section and took credit for the play. — Andrew Joseph, For The Win, "Mario Chalmers got busted after taking credit for iconic Wade-LeBron play," 22 May 2018 The game opened with George Hill having two dunks for the Cavs in the first three minutes. — Terry Pluto, cleveland.com, "Cleveland Cavaliers sweeping victory reason to be excited -- Terry Pluto (photos)," 7 May 2018 Insider: Why a graduate transfer makes sense for Archie Miller, IU basketball His top highlight of the night was a dunk in the second half that rattled the rim. — Dakota Crawford, Indianapolis Star, "Romeo Langford gets McDonald's All American Game viewers fired up with highlight plays," 28 Mar. 2018 There was still 2:41 left in the first quarter when Poly sophomore forward Justin Lewis had a rim-rattling dunk in the No. 4 Engineers’ Class 3A state semifinal against Stephen Decatur on Thursday night. — Glenn Graham, baltimoresun.com, "Record-setting Mims leads No. 4 Poly past Stephen Decatur, 63-46, and into 3A state title game," 9 Mar. 2018 At the center of it all was Wooten, who matched a career-high in blocks, had several highlight-worthy dunks and jumped completely over Payton Pritchard at one point pursuing another block. — Tyson Alger, OregonLive.com, "Kenny Wooten and Troy Brown spark dramatic turnaround in Oregon's win over Washington," 8 Feb. 2018 McDaniels flashed across the baseline, collected Watson’s pass and hammered home a dunk in the 85-49 final at Viejas Arena. — Bryce Miller, sandiegouniontribune.com, "Aztecs season has chance to be defined by unflappable freshman McDaniels," 9 Jan. 2018
Johan Norberg, del Instituto Cato critica el libro diciendo que "El análisis de Klein es erróneo y fuera de lógica en prácticamente a todos los niveles". Norberg encuentra fallas en aspectos específicos de los análisis, como las protestas de Tiananmen de 1989, que, afirma, no aplastaban a la oposición a las reformas pro-mercado, sino que en realidad causó la liberalización de residencia durante años.20​
Step 2. Nudge the bar out of the rack and step back, setting your feet at shoulder width, with your toes turned slightly outward. Without letting your feet actually move, try to screw both legs into the floor, as if you were standing on grass and wanted to twist it up—you’ll feel your glutes tighten and the arches in your feet rise. Take a deep breath into your belly and brace your core, pulling your ribs down so your torso forms a solid column.
Rope skipping is also a very basic form of a type of exercise called plyometrics. Plyometric exercises involve repetitive explosive movements, such as jumping up and down or catching and throwing a medicine ball. The idea is to execute the movement with as little downtime as possible between repetitions. This, in effect, trains muscles to be powerful and explosive, and utilize the kinetic energy inherent in athletic movements in the most efficient way.
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. 
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Each time you land, spring immediately back up. Don’t hesitate. The single beat that typically happens after we hit the ground is a natural reflex, and we may not even realize we’re doing it. But that extra pause has to go if we’re looking for a way to jump higher. Check the mirror or watch videos of yourself as you hit the ground. The momentary pause you may see between one vertical jump and the next may be holding you back. For more detail on how this works, visit the plyometrics section of our website.

Of course, these forces increase linearly with increasing body weight. Therefore Olympic high-jumpers are usually build more like marathon runners and less like football players. Every unnecessary pound adds to the forces during take-off, and at some point the muscles and tendons of the jumping leg are just not strong enough any more to support all the weight.
During the 1940s and 1950s, 7-foot center and Olympic gold medalist Bob Kurland was dunking regularly during games.[7] Yet defenders viewed the execution of a slam dunk as a personal affront that deserved retribution; thus defenders often intimidated offensive players and thwarted the move. Satch Sanders, a career Boston Celtic from 1960 to 1973, said:

Other investigators and participants in the trial are as follows: R. Kitzberger, U. Holzinger, Medical University of Vienna, Vienna; A. Roman, Centre Hospitalier Universitaire St. Pierre; D. De Bels, Brugmann University Hospital; S. Anane, Europe Hospitals St. Elisabeth, and S. Brimioulle, M. Van Nuffelen, Erasme University Hospital — all in Brussels; M. VanCutsem, Centre Hospitalier Universitaire de Charleroi, Charleroi, Belgium; J. Rico, J.I. Gomez Herreras, Rio Hortega University Hospital, Valladolid, Spain; H. Njimi (trial statistician), Université Libre de Bruxelles, Brussels; and C. Mélot (independent statistician and physician responsible for conducting sequential analysis and evaluation of serious adverse effects), Erasme University Hospital, Brussels.


I paid a lot of money for a vertical leap training system in the past that was a total scam. The red flags were everywhere, but I overlooked them because I was so eager to train and get results. That's why I was tentative when I first found out about TTS and Coach Cascio. Not wanting to be ripped off again, I decided to thouroughly look through his website. I was surprised to see that he actually communicated with customers via social media and actually shared useful information and excercises for free with email, Youtube, and now this book. This honest approach made me feel confortable and so I decided to give his program a shot. Thanks a lot for working hard for us, Jack.
I went through this progression, too. I went from touching the middle of the net at 12 years old, to dunking a basketball at 14 years old, to doing serious acrobatic 360-degree dunks at 17 years old. In college, my personal record for the vertical leap was 40 inches. At my peak, I was able to touch the top of the square on a regulation backboard, about 11.5 feet from the ground. Even now, in my thirties, I can dunk a basketball while standing underneath the basket—no run up required. I owe it all to the power of the vertical jump.
Though improving jumping technique may add a couple inches to an athlete's vertical jump, good landing technique is even more crucial. The landing is when almost every jumping-related injury occurs, not the jump itself. For this reason, athletes should spend a significant amount of time learning to land in a balanced position that distributes the impact of the jump equally across all joints of the lower body. This position should look almost identical to the take-off position.
“There’s something about dunking a basketball that lures us in,” he said, reflecting on his first jam, during lunch period his sophomore year at De La Salle High in Concord, Calif., back when his driver’s license read 5' 11", 112 pounds. “It stokes the imagination. It’s something you always dream of doing. I have a friend whose father, at age 50, is trying to dunk.”

Shocks work and the ride is much better but installing them is a pain. They don't come compressed and are hard to compress by hand. For a 2012 F250 I bolted the lower portion of the shock up then took a racket strap and hooked it around the top bolt collar. Racket it till its close to the hole then release the strap and knock it over in the hole. That was the way I did it. The first side took forever trying to muscle it in then I busted out the strap and had it on in 5min.........Good product but I wish it would have came compressed.
Rope skipping is also a very basic form of a type of exercise called plyometrics. Plyometric exercises involve repetitive explosive movements, such as jumping up and down or catching and throwing a medicine ball. The idea is to execute the movement with as little downtime as possible between repetitions. This, in effect, trains muscles to be powerful and explosive, and utilize the kinetic energy inherent in athletic movements in the most efficient way.

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.

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!
Perform jump and reach exercises for a simple vertical jump workout. Start in a standing position with your arms above your head, your feet shoulder-width apart, and your knees and hips forward. Bring your arms down and back, while simultaneously lowering your hips and bending your knees. Then, swing your arms forward and jump as high as you can.[5]

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.
This book is great. I was a little worried because I am a girl an wasn't sure if these excerises were gonna be too hard or effective. But Jack Cascio shows great exercises and explains the science behind vertical jump. He explain the exercises step by step and give you a website where to go if you need a visual. Very informative and great info. Will definitely help you increase you certain will you help you gain knowledge about it also.
Stand with your feet shoulder-width apart. Keeping your back straight, bend at your knees and hips as if you are attempting to sit in a chair until your thighs are parallel with the floor. Simultaneously extend your arms straight out in front of you. From this position jump up, straighten your legs and swing your arms back down to the side of your body. Repeat 25 jumping squats in a row for three sets with a 1-minute break between sets.
To build strength in the legs that will be compatible with the speed developed through successful plyometrics drills, squat and lunge exercises are important components. Squats are performed with free weights, where the athlete uses a weighted bar to carry out the exercise. The additional weight will be supported by the body through the abdominal, lumbar (low back), and gluteal muscles, in addition to the legs. This form of exercise permits the strengthening of the legs in conjunction with enhancing the core strength of the body, essential to the balance necessary to have the several muscle groups involved in leaping work in harmony.
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