Finally, to make things even more complicated, it is likely that the roles of the lower body muscles may differ according to if: (1) the jump is maximal or sub-maximal, (2) long-term training has occurred, and (3) the individual has a “hip-dominant” or a “knee-dominant” technique. Indeed, the vertical jump is more dependent upon the hip extensors in maximal jumps, compared to in sub-maximal ones. And after long-term jumping training, the increase in the amount of work done in the jump by the hip extensors is related to the increase in height, while the increase in the amount of work done by the knee extensors is not.
Justifying these selfish, skewed priorities in my head as I stuffed a basketball into my backpack and pedaled away from our home would turn out to be one of the most formidable obstacles in my path. I must have whispered, What the f--- am I doing? as many times as I leaped toward one of the rusty rims scattered around the south Los Angeles beach community where we live. That latter number tallied somewhere around 5,000, according to my journal and 24-plus hours of video. Many of these jumps were attempted while wearing a weighted vest that pulled me downward, the same way that home pulled me sideways.
Another high pull option is to shorten the range of motion to make it a hang high pull instead of a power high pull (“power” implying that the load starts on the floor). In this case, the start position is from standing, with the bar hanging in front of your thighs at arms’ length. The movement is initiated with a dip in the hips and knees, so that the bar lowers to just above knee level, followed immediately by an explosive pull.
When I started to work on the video tool that measures vertical jump, I had to dust off my old textbooks to learn about the relationship between hang time and jump height. And to my surprise, it turned out that the vertical jump is a great (and interesting!) example of the laws of physics at work. You can really learn about the relationship between velocity, acceleration, forces and hang time. Definitely more interesting than the average example of your physics textbook!
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.
The slam dunk is usually the highest percentage shot and a crowd-pleaser. Thus, the maneuver is often extracted from the basketball game and showcased in slam dunk contests such as the NBA Slam Dunk Contest held during the annual NBA All-Star Weekend. The first incarnation of the NBA Slam Dunk Contest was held during the half-time of the 1976 American Basketball Association All-Star Game.
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.
Sports scientist are able to measure these ground reaction forces with a technology called force plates. These plates record the exact forces occurring during a vertical jump (or any other movement) and allow you to see how quickly athletes can produce forces, how large these forces are, and to expose potential imbalances between the left and right leg.
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.
Increase your vertical leap. You will need the lifting power of your legs to get you in the air and up to the basket. Building a regimen of leg workouts that will increase the fast-twitch strength and the flexibility of your leg muscles can help you add inches to your vertical leap, getting you that much closer to the rim. A good regimen to get started with might include:
The boundary for stopping the trial owing to the lack of evidence of a difference between treatments at a P value of 0.05 was crossed (Figure 5 in the Supplementary Appendix). There were no significant differences between the groups in the rate of death at 28 days or in the rates of death in the ICU, in the hospital, at 6 months, or at 12 months (Table 2). Kaplan–Meier curves for estimated survival showed no significant differences in the outcome (Figure 2). Cox proportional-hazards analyses that included the APACHE II score, sex, and other relevant variables yielded similar results (Figure 6 in the Supplementary Appendix). There were more days without need for the trial drug and more days without need for open-label vasopressors in the norepinephrine group than in the dopamine group, but there were no significant differences between the groups in the number of days without need for ICU care and in the number of days without need for organ support (Table 3). There were no significant differences in the causes of death between the two groups, although death from refractory shock occurred more frequently in the group of patients treated with dopamine than in the group treated with norepinephrine (P=0.05).
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.
Vertical jump measurements are used primarily in athletic circles to measure performance. The most common sports in which one's vertical jump is measured are track and field, netball, basketball, football, and volleyball, but many sports measure their players' vertical jumping ability during physical examinations. In addition, single and multiple vertical jumps are occasionally used to assess muscular strength and anaerobic power in athletes.