Originally Posted by Ingar
Thats a pretty ignorant statement, I'll whip up one study to prove you wrong:
(1) Faculty for Physical Culture, Belgrade, Yugoslavia
(2) Institute for Medical Research, P.O. Box 721, YU-11001 Belgrade, Yugoslavia
Six subjects performed rapid self-terminated elbow movements under different mechanical conditions prior to, and 5 weeks after an elbow extensor strengthening programme. Despite the large difference in the strengths of elbow flexors and extensors, the pretest did not demonstrate significant differences between the movement time of flexion and extension movements performed under the same mechanical conditions. The results obtained in the posttest demonstrated a decrease in movement time (i.e. an increase in movement speed) in both elbow flexion and extension movements under some mechanical conditions. In addition, flexion movements demonstrated a relative increase in the acceleration time (acceleration time as a proportion of the movement time). It was concluded that the strength of both the agonist and antagonist muscles was important for the performance of rapid movements.
Antagonists, i.e. muscles performing the opposite of a certain action on a certain limb, which means the bicep brachii is and antagonist of the triceps brachii, each play a huge role in both movements.
Then you also have the joint stability, if you're gonna increase strength and size in your triceps, you gotta do the same for the biceps to achieve optimal results as well as avoid injury.
Ehhhhh I finally get what this whole topic has been about. The study is mainly trying to illustrate that if you push and gain strength in a certain direction, you should also *pull* in the opposite direction. It's called compensatory muscles, or agonistic versus antagonistic. Since a lot of punching involves 'triggering' fast and hard with the Tricep, without a strong Bicep to retract the outgoing force, you get a slower or a delayed recoil.
That is one of my theories up to date on why so many Boxers in the past screwed up their back, they focused on working the front body too much (Abdominals) and end up neglecting the back, ultimately having very little resistance in the opposite direction. As a commonly known fact back pain is caused by disproportionate abdominal vs lower back strength. Everytime you launch a hook you outstretch the back muscles, then from the moment you jerk back to your neutral defending position, you inadvertantly end up damaging the back without even realising it. This happens because the transition between tensor and extensor is too long and fast for the actual compensatory muscles to handle. Of course that damage can be avoided if you paid equal attention to the back as well as the 'front'.