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My ankles would be dead after 5 minutes of that insane barbell hop routine.How about a heavy barbell calf raise/ankle hop type of complex? At some point I think you might consider experimenting with hypertrophy work too because I don't think your weakness is neurological or tendinous in origin as much as it is probably structural. Do several sets of higher rep barbell calves and see if you have more leverage off your toes the following days. Something like 5 x 5 at a 2-3-x tempo. If I notice extra leverage from something like that I'd be surprised if you don't notice it too.

um, wtf?
I thought the same thing until I realized that even if she has a vertical of around 16 inches, mine is only five inches higher and I'm definitely older and bigger than her.
I can't believe you put up CCJ's "forumula"...
The results showed that subjects in the HCI (High Contextual Interference aka randomized learning)group were more accurate in diagnosing far transfer problems, although during practice they needed more time to diagnose system failures and made significantly more incorrect diagnoses.
Retention and transfer of motor tasks was greater for high interference (random) acquisition groups than for low interference (blocked) acquisition groups. This effect was most notable when transfer was measured for the transfer task of greatest complexity.
On both the random and blocked transfer tests, however, the random group performed with reliably higher scores than the blocked group, who performed better than the control group. When comparing the pretest to the random transfer test, the random group improved 56.7%, the blocked group 24.8%, and the control group only 6.2%.
Athletes who routinely exercise their hamstrings, however, had a coactivation response similar to that of normal subjects.
We concluded that coactivation of the antagonist is necessary to aid the ligaments in maintaining joint stability, equalizing the articular surface pressure distribution, and regulating the joint's mechanical impedance. The reduced coactivation pattern of the unexercised antagonist to a hypertrophied muscle increases the risk of ligamentous damage, as well as demonstrates the adaptive properties of the antagonist muscle in response to exercise.
Thus the mechanisms that contribute to enhanced dynamic strength appearred unrelated to the mechanisms that contribute to enhanced isometric strength. Measures of dynamic and isometric speed-strength were unrelated, as were the changes in these measures resulting from training.
Once fatigued, both males and females used an ankle-dominant strategy, with greater reliance on the ankle musculature and less on the knee musculature. Also, once fatigued, all subjects used an antagonist inhibition strategy by minimizing antagonist coactivation. Overall, females used a more quadriceps-dominant strategy than males, showing greater quadriceps activity and a larger quadriceps-hamstrings coactivation ratio. Changes in muscle activation and coactivation ratios because of fatigue and sex are suggested to alter knee joint stability and increase anterior cruciate ligament injury risk.
The more thorough employment of motor programming during acquisition by random practice participants resulted in a more efficient use of this planning operation during retention, as well as more accurate movement reproduction. These data support the claim that practice conditions high in contextual interference support improvements in both movement preparation and memory strength.
These results suggest a different co-contractive behavior between the gluteus maximus and semitendinosus, signifying a shift in neuromuscular control patterns. It appears that female recreational athletes utilize a different neuromuscular control pattern for performing a drop jump sequence when estrogen levels are high (luteal phase) compared to when they are low (early follicular phase).
Most evidence indicates that for lengthening contractions of a wide range of efforts and speeds, fast-twitch muscle fibres cannot be selectively recruited without activity of the slow-twitch fibres of the same muscle.
Abstract: The purpose of this study was to investigate electromyographical (EMG) activation of the hamstring (H) and quadriceps (Q) muscle groups, and their ratio of activation during the performance of resistance training (RT) and plyometric (P) exercises. These variables have not previously been investigated despite the belief that quantifying RT and P exercises is important for program design. Furthermore, gender differences in H and Q activation and H:Q ratio have been proposed and linked to H and anterior cruciate ligament (ACL) injury, though no previous work has evaluated these variables during RT and P, despite the fact that these two training modes are considered to be critical for performance enhancement and injury prevention. Sixty-seven subjects volunteered to participate in two phases of this study designed to investigate these research questions. Thirty four subjects volunteered as subjects for the first part of the study designed to assess H, Q, and H to Q activation ratio during a variety of lower body RT exercises thought to be effective at recruiting the H muscle group, including the squat, Russian curl, seated leg curl, stiff leg dead lift, single leg stiff leg dead lift and good morning exercise. During the second phase of this study, twenty-three subjects volunteered to participate in order to evaluate motor unit activation of the H and Q during the performance of ten P exercises. Data were collected during 10 randomly ordered exercises including 2 foot ankle hops, 15 cm cone hops, tuck, box, and pike jumps, 1 and 2 leg vertical jump and reach, squat jumps with approximately 30 percent of 1RM load, and 30 and 61cm depth jumps. Female subjects demonstrate a trend toward less concentric Q activation during P exercises that have the greatest overload, such as during P exercises with added mass, performed on only one leg, and for drop jumps of greater height, compared to P with less overload. (Abstract shortened by UMI.)
Hey,
I've got another question about the second article in the series. It says that anaerobic endurance training is the best for developing tendon stiffness so I would like to know how I can incorporate that type of training into my workouts. The first thing I thought of was running a 400 but that would have to take up an entire workout since as it is I usually don't do more than 300m total in a speed workout. I'd like to do anaerobic endurance training if it is the most effective for building tendon stiffness but I don't really know how to do it. Isn't something which is 40-60 seconds of 100% intensity too draining to use as regular part of a workout?
Hey all.
I added a little article to my blog about quads, the neglected A Chain as RJ puts it
Got some cool video in it as well
http://evolutionaryathletics.wordpress.com/2009/06/06/quads-the-secret-to-your-athletic-success/
Alex
My cross country team implemented all of the core stuff, including the techniques for the squat, bench, rdl, pull up
in six weeks they gained 2.5-5.5 inches on their verts.
Great stuff, just goes to show how much learning how to move properly will help performance. WGF will be posting an article about it in a short while