You should consider the validity, reliability, costs and ease of use for each test. The height of a jumper during each moment of the jump is described by this formula: In this interactive graph shows the plane of flight: We can see that a jumper spends 10% of his hang time in the top 1% (or 50% of his hangtime in the top 25%). A better way to look at this problem is to assume that the potential energy of the body remains constant: Let’s take a look at the formula for the gravitational potential energy that the jumper possesses at the peak of the jump: If we asume to be constant then we get for the new jump height: So if you lose 10% bodyweight while everything else stays the same, you would improve your vertical jump by 11.1% ! How to Dunk a Basketball – Learn 3 Different Techniques, Highest Vertical Jump Ever in NBA, NFL and Track & Field. A standing vertical jump is performed from a stand-still. Now you can record a jump on camera, and then precisely trim the clip so that it begins as your feet leave the ground and finishes when your feet return. If the athlete can’t do anything at this point to increase his vertical jump, can we then determine the jump height using the recorded ground reaction forces during phases 1-3? of 0.39 seconds. The athlete has to decelerate the downward movement to reach a short moment of pause at the deepest position of the jump. You can also see how fast the takeoff velocity is , how quickly a jumper is high enough to dunk (speed of dunk) and how long he is high enough in the air to still dunk (effective hang time). This can be seen in the graph as both the yellow and the green area result in 245Ns. Save my name, email, and website in this browser for the next time I comment. While small dunkers have to train a lot more to make a dunk they also have the advantage of great hang time. In our specific case we get: This interactive graph shows the relationship between impulse, mass of the jumper, initial velocity and jump height: If you are a sports scientist and you have access to a force plate then this is great! We know, however, the time the jumper was in the air (hang time). as in reality the force curve wouldn’t be as smooth, but it will work just fine as an example: Before the jump, the analysis shows a flat line at a force of 981 Newton. In general: So the answer is no, the jumper is not really hanging in the air, but it appears this way because the athlete spends a disproportional amount of the hang time at the peak of the jump. The athlete is now back in a standstill and the 5 phases of the vertical jump are complete! facebook Inputs: initial vertical velocity (v … This part of the movement can be easily identified on the force-time diagram as the part where ground reaction forces are below the expected forces due to gravity. The app uses the accelerometer to determine the changes in forces to calculate your vert. The concept with the physics formulations is totally on point. However, velocity during the time of flight would change drastically, as it is no longer decelerated by the gravity of earth () but by the gravity of Moon (). It shows the work, step by step. During NBA telecasts you often hear the announcers say that a player stopped in the air during a particularly athletic dunk or block. Vertical Calculator. Commenting is closed on this page, though you can read some previous comments below which may answer some of your questions. This force is explained in this formula: Where is the mass of the athlete and is the acceleration of earth’s gravity. During his prime, Micheal Jordan had a vertical of at least 110cm. Visit our Programs page to find plyometric exercise to help you increase your vertical jump. This explains why it oftens seams as if a jumper is "stopping" mid air. Your run-up or step-up vertical jump height may be higher than your standing vertical jump depending on your jumping efficiency. Strong athletes will, probably subconsciously, pull their legs up near the peak of their jump. Visit our Programs page to find plyometric exercise to help you increase your vertical jump.        If the athlete wants to stop the downward movement and come to a standstill he has to exert enough forces to cancel out the impulse of the vertical speed of the landing: This impulse can be pictured as the green area in the following graph: In our example, the athlete accelerated from a velocity to , during the landing he has to accelerate from a velocity of to a speed of . Calculate how high you need to jump to dunk a basketball on a NBA regulation hoop using the Dunk Calculator. Using Vertical Jump Calculator, you can do just that! If you lose weight, will you be able to jump higher? If you want to try your knowledge and answer them yourself, you can check out the equation collection or the interactive calculator at the end of this post. To better picture it, imagine looking for a so that the pink and blue areas are exactly the same size: This phase begins with the athlete at the bottom of the jump, just as he begins exploding upwards towards the takeoff. Vertical Jump Calculator - MyFitnessCalculators. 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. This will be accompanied by charts and interactive calculators, and in the end, we are going to answer some fun questions like: “How high would Micheal Jordan jump on the Moon?”. This will be the fastest time in which you can complete a dunk. To use, simply tap and hold the start button when your feet leave the ground, and release once your feet return to the ground.