procedure (see also variations below): the athlete stands side on to a wall and reaches up with the hand closest to the wall. Keeping the feet flat on the ground, the point of the fingertips is marked or recorded. This is called the standing reach height. The athlete then stands away from the wall, and leaps vertically as high as possible using both arms and legs to assist in projecting the body upwards. The jumping technique can or cannot use a countermovement (see vertical jump technique). Attempt to touch the wall at the highest point of the jump. The difference in distance between the standing reach height and the jump height is the score. The best of three attempts is recorded.

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.


My wife of 11 years, who isn’t a sports fan, knit her brow in confusion and nodded when I raised this idea for the first time. She wanted to care but could not muster the attention span, for she had given birth just three weeks earlier to our third daughter. I would be needed at home in the coming weeks—a reasonable expectation. Although I look back today with pride at how I balanced that responsibility with the time-consuming­ and far less important dedication to dunking, I knew at the time that I would miss a lot of family dinners, bath times and diaper changes so that I could ride my bike to the gym or to local playgrounds, with no guarantee that I would reach my goal, or even come close.

Many models have been constructed to identify the most important muscles in the vertical jump, with some conflicting results. Some have suggested that movement is governed by the gluteus maximus and quadriceps, while others have proposed that the hamstrings, quadriceps, and calf muscles are key. Importantly, no model has yet explored the role of the adductor magnus, which is the primary hip extensor in the barbell squat. This is relevant, as many studies have found that the squat is an ideal exercise for improving jump height, and maximum back squat strength is closely associated with vertical jump performance among athletes.


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Original shocks have a secocnd lower nut that prevents the shock rod from spinning when loosening or tightening the upper mounting nut. The Bilstein shocks are not equipped with the second nut and the shock rod turns while trying to tighten the upper mounting lock nut, making it impossible to tighten. I had to return the shocks and bought a different brand. Also, Bilstein's installation instructions are about the worst I have ever seen.

variations: The vertical jump test can also be performed using a specialized apparatus called the Vertec. The procedure when using the Vertec is very similar to as described above. Jump height can also be measured using a jump mat which measures the displacement of the hips. To be accurate, you must ensure the feet land back on the mat with legs nearly fully extended. Vertical jump height can also be measured using a timing mat. The vertical jump test is usually performed with a counter movement, where there is bending of the knees immediately prior to the jump. The test can also be performed as a squat jump, starting from the position of knees being bent. Other test variations are to perform the test with no arm movement (one hand on hip, the other raised above the head) to isolate the leg muscles and reduce the effect of variations in coordination of the arm movements. The test can also be performed off one leg, with a step into the jump, or with a run-up off two feet or one foot, depending on the relevance to the sport involved. For more details see vertical jump technique.
After a one-week recovery period in January following Phase 1 of Jump Attack, Phase 2 brought an increase in intensity and time investment. This was the last stop before Phase 3, the wilderness where those attack depth jumps lived. (Attack depth jumps: Rest on your knees in front of a box; explode to your feet without using your hands; immediately jump onto the box; immediately jump as high as you can off the box, landing on the balls of your feet. Repeat. Many times. No blacking out allowed.) Phase 3 brought dramatic increases in both explosiveness and hip flexibility, two critical ingredients that I started to feel working in tandem. I emerged both confident and in dire need of another one-week recovery period, which I spent playing with our kids, watching dunk videos and mouthing the syllable Ow. Once healed, in early March, I returned to the rims with a friend whom I’d asked to toss lobs to me. There would be no more lifting. (After Jump Attack, what else could there possibly be?) From here on, I just jumped and recovered, jumped and recovered, attacking this tiny window of three or four weeks before my time away from the gym began to sap my strength. It would be over at that point, all over, whether I wanted it to be or not.
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.
Hi I'm 14 years old and 6 foot 4 I can dunk but not really good like I need more air so that I can dunk better and I'm trying to get my vertical jump up to 5 feet my vertical you probably will say that's crazy but it's possible a really love it that a 13 year old can dunk but I want to do something amazing and that is to be better that micheal Jordan and I will succeed thank you so much hope you see me in the NBA .

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.
There are over 300 fitness tests, so it's not easy to choose the best one. You should consider the validity, reliability, costs and ease of use of each test. Use our guide to conducting, recording, and interpreting fitness tests. Any questions, please ask or search for your answer. To keep up with the latest in sport science and this website, subscribe to our newsletter. We are also on facebook and twitter.

This list of movements was compiled by a pair of trainers who know a thing or two about making athletes more explosive: Jason Benguche, assistant strength and conditioning coach for the Carolina Panthers (@movement_mogul on Instagram), works one-one-one during the season with the NFL’s most explosive quarterback, Cam Newton. And Firdose Khan (@dose_9), head trainer at Nine Innovations athlete training facility in Houston, has worked with such athletes as former NBA MVP Derrick Rose and NFLers Arian Foster, Braxton Miller, and Brian Cushing.
From the Department of Intensive Care, Erasme University Hospital (D.D.B., A.B., J.-L.V.); the Department of Intensive Care, Brugmann University Hospital, Université Libre de Bruxelles (J.D., P.G.); and the Department of Intensive Care, Centre Hospitalier Etterbeek Ixelles (D.C.) — all in Brussels; the Department of Intensive Care, Centre Hospitalier Universitaire de Charleroi, Charleroi, Belgium (P.B., P.D.); the Department of Medicine III, Intensive Care Unit 13H1, Medical University of Vienna, Vienna (C.M.); and the Department of Anesthesia and Critical Care, Rio Hortega University Hospital, Valladolid, Spain (C.A.).
Randomization was performed in computer-generated, permuted blocks of 6 to 10, stratified according to the participating ICU. Treatment assignments and a five-digit reference number were placed in sealed, opaque envelopes, which were opened by the person responsible for the preparation of the trial-drug solutions. The solutions of norepinephrine or dopamine were prepared in vials or syringes according to the preference of the local ICU. Each vial or syringe was then labeled with its randomly allocated number. The doctors and nurses administering the drugs, as well as the local investigators and research personnel who collected data, were unaware of the treatment assignments. The trial was approved by the ethics committee at each participating center. Written informed consent was obtained from all patients or next of kin.
“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.”
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.

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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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