Jessie looks back on the day often. She remembers how weak her knees felt once they had made the jump; he had to hold her up to keep her from toppling over. She remembers his face, the flashes of abject terror, shock, and then euphoria. And she remembers the warmth in her belly, like she was glowing from the inside.
Mike keeps a calendar where he crosses off the days since it happened. Many markers are spent in the attempt to keep a record; the markers start out strong, with vibrant confident lines, and then they sputter and falter and only the blood-crawling squeak against the paper remains. Mike tries many colors. Blue. Red. Green. Magenta. The ink runs out of all of them. And still no jump.
The first dozen attempts are at the park, trying to find the right spot, wearing the right clothes. Jessie must always be on the right side. They try time of day. It must always be late afternoon. They try the weather. The day must be cool and clear.
Soon after that, Jessie refuses to go back to the park. But Mike keeps asking to try in other places. At home. When they go out to restaurants. At the movies. Jessie obliges, but each time her shoulders slump a little lower. She hates it. She hates it so much.
He looks at his life and there is the jump, an island unto itself, surrounded by an ocean of monotony. Even when he is in a big moment, on the crest of some big wave, he can look out and see the island, and it calls to him, but he knows he cannot get there and it laughs at him. Vicious searing laughter.
He is thinking of the jump even now, but it is swirled in there with the guilt. All the things he was unable to do for Jessie, the man he was unable to be. He still wants it, but now he wishes he could close his eyes and zero in on that want with his mind and send it off to some distant planet where it cannot hurt them anymore. But that seems even more impossible than that day so long ago.
The old clich of the light at the end of the tunnel. Mike laughs at it now. It is a fiction. There is light where he is. It is dim. It continues to dim. But there is no light ahead of him. All he sees is darkness.
She closes her eyes. This is the last time ever, she tells herself. A goodbye gift in honor of the thing that destroyed their lives. But even as she is thinking this, she can feel something frozen inside thawing against her will.
The phrase is no longer limited to contexts involving entertainment; anything that undergoes a significant change for the worse that marks the start of a period of decline can be said to have "jumped the shark":
A few factors play into the longevity of your jump ropes: volume of outdoor use vs. indoor use, frequency + duration of use, temperature, and rope thickness. Crossrope jump ropes are made of a high-grade, durable plastic and steel cable core. You can significantly extend the longevity of your jump rope by using a jump rope mat.
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A weighted jump rope is ideal for exercise. Weighted ropes create more resistance resulting in greater muscle engagement and a higher caloric burn during your workouts compared to light ropes. Check out our benefits of weighted jump ropes infographic for more information.
As a young athlete, I tried any training method I could get my hands on to improve my speed and jumping ability, as well as inventing many others. I tried high-repetition plyometric programs, ran stairs, did wall sits, basic strength training, and more. I acquired a few small gains here and there, but nothing dramatic. The search continued.
All that being said, the depth jump is probably the most powerful exercise an athlete can utilize in terms of specific force overload. From Russian high jumping to cult sprint training methodology and commercial basketball performance programming, the depth jump is widely used.
The problem is that it is also the most misrepresented and misperformed exercise among many athletic populations. Much of this problem is due to a lack of understanding of the theory behind the depth jump, and what athletes are trying to accomplish in its performance!
Now, the matter of intensity (drop height). It is the most immediate factor present in the movement, and the one most likely to influence the buy-in effect of the exercise due to the positive momentum of results from correct performance.
Natalia Verkhoshansky, daughter of the legendary depth jump inventor Yuri Verkhoshansky, has shed light on different ways of implementing depth jumps in training. She places the exercise into two distinct categories: the drop jump and the depth jump. Both involve dropping from a box and rebounding for maximal height upon landing, but have important differences that can help us gain greater insight into the actual purpose of the exercise itself.
Finally, whereas the drop jump focuses on minimal ground contact time and quality of muscle stiffness and landing mechanics, the depth jump is more oriented towards maximal rebound height. Therefore it must be paired with an outcome goal, such as a high rebound back up toward a target such as a Vertec or basketball hoop. For track and field athletes, the depth jump can be performed over a high hurdle for much specific effectiveness.
Check out this video depicting a depth jump performed by an Auburn football player for maximal height (hence the use of the contact mat). This is clearly not a drop jump, and is done for maximal explosive power rather than reactive plyometric ability, as seen by the huge knee bend. I recommend that athletes try to use slightly less knee bend than they naturally would in a vertical jump for depth jump performance, to maximize the power impulse. The the less the knee bend in the depth jump, the more it will likely transfer to running jumps and other high-velocity activities.
The bottom line with designing outcomes for depth jumping is that goals should be fairly specific to the type of sport. Basketball players can perform depth jumps with a basketball in their hands, trying to dunk the ball on a rebound. Volleyball players could perform a depth jump with a lateral drop off the side of the box into a blocking jump. The possibilities are endless and limited only by the creativity of coaches, who simply remember the frame of ground contact and the general muscle recruitment their individual sport tends to demand.
Single-leg depth jumps are another great method of performing the depth or drop jump. Although one would immediately think that single-leg depth jumps would be specific training for single-leg jumps in sport, counter-intuitively they are not. A single-leg depth jump registers a fairly long ground contact time, around a half-second, more similar in nature to a standing vertical jump than a jump off one leg. Strangely enough, when I was performing a large volume of single-leg jumps back in high school, I felt much more power in my two-leg takeoffs than anything.
According to sport science experts, as well as personal experience, the depth jump may be the most improperly performed exercise in the sporting world today. The rise of barbell sports such as CrossFit has brought a higher standing of barbell competency to the training world, but we are still quite behind in teaching movement skills more specific and transferable to the athletic result! That said, here are common errors in the depth jump exercise.
Since depth jumps were more or less invented to improve the performance of high jumpers, it would make sense that they might play an important role in their development. The best version of the depth jump for high jumpers depends slightly on their takeoff style preference. Other events, such as the long jump, generally require a very short ground contact time at takeoff, around .12 seconds, whereas the high jump can see takeoff times of anywhere from .14 to over .2 seconds in high-level jumpers.
The same vertical force production that depth jumps offer sprinters is quite useful for horizontal jumpers. Generally speaking, these athletes may do better with a greater respective volume of drop-jump type activities. Ground contact time must be very closely monitored, particularly in seasonal periods when a high level of reactive strength is required. A good volume of low-box-height drop jumps is not as intense as their depth jump brethren, and can be a nice way to help build specific horizontal jump fitness in the SPP training periods.
Are depth jumps necessary to build a world champion sprinter? Of course not. Are they a useful tool in the development of the majority of sprint athletes? Sure. Sprinters do well with depth jumping, as the single-response depth jump can help improve the quality of more common, repetitive vertical plyometric efforts such as hurdle hops. The depth jump is one of the best special strength exercises available for sprinters in terms of improving the magnitude of their ground reaction force, as well as providing a strong neural signal to the lower body. Athletes who need improved acceleration qualities will do better with a higher volume of the depth jump variety, while those seeking improved top-end speed will cater towards variations over hurdles, as well as drop jumps.
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