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.
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.
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.
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
Aside from squats, the exercises below are considered some of the best bodyweight plyometrics you can do to help improve the fast-twitch muscle fibers that enable you to jump higher and run faster. When it comes to vertical jump, plyometrics are a key. A review in the "British Journal of Sports Medicine" looked at 26 research studies that tested the effects of plyometrics on vertical jumps and found that plyometrics increased vertical jump by 8 percent. Another study reported that plyometrics helped professional athletes increase their vertical leap by 23 percent, improve their agility by 8 percent, their balance by 5 percent, and their time by 0.30 seconds on the 20-meter sprint.
I gave myself six months to dunk because that was the low end of the “six to eight months” prescribed on the website of Brandon Todd, a 5'5" former D-III star who set the same goal for himself in 2005, and then, at age 22, accomplished it. When I first contacted him, Todd perfectly expressed the more shallow reason behind my goal: “When you can dunk, it means you’re a good athlete. Period. It takes away any subjectiveness.” I also chose six months because, as would be proved repeatedly during this mission, I am prone to tragic spells of overconfidence.
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!
After warming up, I proceeded to slam Jeff’s best lobs off the back rim at least 10 times, watching these missed dunks rebound high over the lane and land somewhere near the three-point line. It’s tough to express how difficult it was to pack up and walk away from the court on such days, to listen to my body when it told me it had reached the point of diminishing returns. To come up with yet another way to tell the wife: No, not today, Sugar. But I came reeeally close.
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.
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.
After four months of failing to pull off anything even resembling a real dunk, the planets aligned on Aug. 9: After at least 19 failed attempts that afternoon, I dunked a soccer ball on a middle school court whose rim measured 9' 11". (The original basketball, incidentally, was a soccer ball, property of Dr. Naismith’s employer, Springfield College.) Video from that afternoon shows me standing there, looking confused, in the moment afterward. Did that just happen? Failing had become so routine that even this small success felt foreign.
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.
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
Before and after every workout, stretch your legs. This can lead to increase flexibility which loosens your muscles and allows them to perform better with a greater range of motion. In other words, they are strong and function better. Be sure to include dynamic stretches into your warm-up to get your joints moving and static stretches into your cool down after the workout.
No, I think there’s a practical aspect to that. It’s hard to grip a basketball. I mean, that’s another physical challenge. I have pretty small hands, and one thing I had to train myself to do, which I couldn’t do at the start of this project, is palm a basketball. So that involved fingertip push-ups, to get the tips of your fingers much stronger. It involves, while hanging out and watching television, trying to palm a basketball for as long as you can. You want to get into a quick, full sprint, and you want to be able to grip the basketball as you go up to jam it. So doing those things can be a challenge. That’s partly what’s behind people doing the alley-oop-type things or throwing it up off the backboard. In some cases, they simply can’t grip the ball on the way to the hoop, so their solution is to throw it in the air, catch it, and try to bring it down.
My quest to dunk started poorly. The main problem was that I could only do about half of the very long list of ercises the Jump Manual instructed at the crowded and inadequate YMCA near my place. The basketball court—the only space big enough to do some of the drills—was always occupied with classes. The Strength Shoes, meanwhile, were so absurd that I was too embarrassed to wear them in front of other gym-goers. I used them only a handful of times, in an empty stairwell on the top floor of the gym.
Vertical jumps are used to both train and test for power output in athletes. Plyometrics are particularly effective in training for power output, and include vertical jumps of different types in their protocol. In one recent study, training with plyometrics (which included continuous vertical jumps) was shown to improve jump height and boost vertical jump performance to similar degrees in combination with very different resistance training protocols, indicating that the plyometric jumping contributed to the increased jump height more than resistance training. Research into plyometric jumps found vertical jumps to be among the highest in terms of muscle recruitment (as measured by electromyography), power output, and ground reaction force produced. Fatigue has been researched in athletes for its effect on vertical jump performance, and found to decrease it in basketball players, tennis players, cyclists, rugby players, and healthy adults of both genders.