Circulatory shock is a life-threatening condition that is associated with high mortality.1,2 The administration of fluids, which is the first-line therapeutic strategy, is often insufficient to stabilize the patient's condition, and adrenergic agents are frequently required to correct hypotension. Among these agents, dopamine and norepinephrine are used most frequently.3 Both of these agents influence alpha-adrenergic and beta-adrenergic receptors, but to different degrees. Alpha-adrenergic effects increase vascular tone but may decrease cardiac output and regional blood flow, especially in cutaneous, splanchnic, and renal beds. Beta-adrenergic effects help to maintain blood flow through inotropic and chronotropic effects and to increase splanchnic perfusion. This beta-adrenergic stimulation can have unwanted consequences as well, including increased cellular metabolism and immunosuppressive effects. Dopamine also stimulates dopaminergic receptors, resulting in a proportionately greater increase in splanchnic and renal perfusion, and it may facilitate resolution of lung edema.4 However, dopaminergic stimulation can have harmful immunologic effects by altering hypothalamo–pituitary function, resulting in a marked decrease in prolactin and growth hormone levels. 5
When tendons elongate to a greater extent during a jumping movement that is preceded by a countermovement, the muscle lengthens less. This produces two effects. Firstly, the greater elongation of the tendon means that more elastic energy is stored during the countermovement, which is then released in the subsequent jumping phase. Secondly, the smaller elongation of the muscle means that countermovement depth can be greater for the same shortening velocity in the subsequent jumping phase, because the muscle never lengthened that much to begin with. Since shortening velocity determines force, this allows the same muscle force to be produced, despite the larger joint range of motion.
Because of the foam edges the fear of scraping your shins are gone so you can go harder but also because of the foam it is a little unstable when you jump to the 30" level. Instead of scraping my shin on the edge, the foam made the base a little unstable and the box kicked out. Luckily I was on a mat and not a hard floor. That is the only problem I saw with this box.
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
Whether the result of a 180° spin or body angle at takeoff, the double clutch is generally performed with the player's back toward the rim. While this orientation is rather conducive to the double clutch motion, Spud Webb was known to perform the dunk while facing the basket. Additionally, Kenny "Sky" Walker, Tracy McGrady—in the 1989 and 2000 NBA Contests, respectively—and others, have performed 360° variation of the double clutch (McGrady completed a lob self-pass before the dunk). Circa 2007, independent slam dunker T-Dub performed the double clutch with a 540° spin which he concluded by hanging on the rim.
High Reach Jumps – with your feet shoulder width apart, bend down into a comfortable squat position and then jump up as high as you can reaching for the sky! This drill is great to do under the basketball goal or near a wall so you can have a visual of how high you’re jumping – or how low you jump once you start getting tired. Try to reach the same height through all your reps.
The opening scene finds Modern Messiah Malcolm Stevens (the tragically deceased Jon Dough recreating his career-defining character) back in his familiar padded cell. Out of thin air, his lost lady love Gwen (Jeanna Fine, resplendent in stylized Marilyn Monroe Kabuki make-up) appears as an echo of the original's psychiatric theory that Stevens concocted his entire past out of years of transfixed TV ogling à la Jim Carrey's CABLE GUY. This proves to be the film's first of many technical knockouts, shot in black and white complete with scratches and splices to suggest an old movie, the tiniest splash of pink occurring as Jeanna vibrates herself into a frenzy. Malcolm still has a problem projecting himself into his own fantasies and is, at first almost subliminally, replaced by tattooed muscle boy John Decker, the mesmerizing lead from Paul Thomas' terrific MARISSA.
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.
Use a smaller ball. It's much easier, when you're first starting out, to try dunking with a smaller ball. You'll be able to palm it more easily and control your approach, making the maneuver more satisfying and your practice closer to the real thing. Continue dribbling and shooting exercises with the appropriate-sized ball so you're not getting too used to the "wrong" size, but keep a small ball around for your sick dunks.
Before takeoff, or at the onset of the jump, the ball is brought to the abdomen and then the windmill motion is started by moving the ball below the waist according to the length of the player's fully extended arm. Then following the rotation of the outstretch arm, the ball is moved in a circular motion, typically moving from the front towards the back, and then slammed through the rim (from the profile view of a player facing the basket, the windmill motion most generally appears clockwise). Although, due to momentum, many players are unable to palm the ball through the entire windmill motion, the dunk is often completed with one-hand as centripetal force allows the player to guide the ball with only their dunking hand. In some instances sticky resins or powders may be applied to the palm, these are thought to improve grip and prevent loss of possession. Amongst players, subtle variations in the direction of the windmill depend on bodily orientation at takeoff and also jumping style (one-foot or two-feet) in relation to dominant hand.
An alley-oop dunk, as it is colloquially known, is performed when a pass is caught in the air and then dunked. The application of an alley-oop to a slam dunk occurs in both games and contests. In games, when only fractions of a second remain on the game or shot clock, an alley-oop may be attempted on in-bound pass because neither clock resumes counting down until an in-bounds player touches the ball. The images to the right depict an interval spanning 1/5 of a second.
This is why using a slightly deeper countermovement often increases jump height, because the larger range of motion allows the muscles to exert force for a longer duration of time before take-off. Jump height *can* increase even though the force produced is almost always smaller. (Force is smaller when the countermovement is deeper partly because shortening through a longer range of motion leads to a faster contraction velocity, on account of the force-velocity relationship, and partly because the leverage of bodyweight on the lower body joints is larger with a deeper countermovement).
The force-velocity relationship during muscle shortening occurs because the number of simultaneously attached crossbridges between the myofilaments inside the working muscle fibers determine the amount of force that a fiber can produce. The number of attached crossbridges at any one time is dependent upon the fiber shortening velocity, because the detachment rate of the crossbridges at the end of their working stroke is higher at faster shortening speeds.
For improving vertical jumping ability, the back squat and jump squat have been used for many years with great success. Depending on the exact force-velocity profile of the athlete, either back squats or jump squats should be effective for improving vertical jump height. Even so, exercises that shift the load towards the center of mass of the body, such as hex bar deadlifts and weighted vest jumps could be superior.
There are a number of variations on the windmill, the most common being the aforementioned one- or two-hand variants. In these cases, the windmill motion may be performed with the previously discussed one-arm technique and finished with one- or two-hands, or the player may control the ball with two hands, with both arms performing the windmill motion, finishing with one or both hands. Additionally, the ball may be cuffed between the hand and the forearm—generally with the dominant hand. The cuff technique provides better ball security, allowing for a faster windmill motion and increased force exerted on the basket at finish, with either one or both hands. Using the cuffing method, players are also afforded the opportunity of performing the windmill motion towards the front (counterclockwise), a technique exploited by French athlete Kadour Ziani when he pioneered his trademark double-windmill.
A forceful, dramatic move, as in That indictment was a slam dunk if ever there was one. This expression is also often put as a verb, slam-dunk, meaning "make a forceful move against someone," as in This is a great chance for us to slam-dunk the opposition. The idiom comes from basketball, where it refers to a dramatic shot in which the ball is thrust into the basket from above the rim. It was transferred to other activities from about 1980 on.
Slow-Motion Squats – Involves standing with your feet shoulder width apart. From this position slowly lower down until you are in a deep squat making sure your heels are ﬂat on the ground. Hold for 2 seconds before slowly rising back to the starting position. The descent and rise should each take 4 seconds to complete. Throughout the entire exercise make sure to keep your head up and your back straight.