The possible injuries for this executive vice have already been mentioned.
No observation for Concentration Curl, with elbow resting on thigh in a sitting position.
No observation for Forearm Flexion, Cross Arms, Vertical Pulley.
is the wrist joint.
Although already statistically rarer than pushing or extension exercises, it happens to see people who keep their hands extended dorsally with forcing flexibility of the wrist tendons. See what has already been written on pushing exercises.
: the hands must be kept in line with the forearms and not flexed, so as not to force the resistance of the wrist joint. About the blows of the kidneys, see what is written on the curl with hands in supination (the common curl standing up). of the forearms. These movements are generally used to strengthen and make the forearms less clumsy, a weak link in the kinetic chain of various multi-joint movements, including rowing and pulling. But that doesn't mean that the same weight should be used as in these complex exercises, here in flexion / extension of the barbell wrists. You have to be sensible and mature. An excessive load forces the flexion (or extension, in the mirror exercise) of the hand and dangerously stresses the wrist joint which I have repeatedly pointed out here as deserving particular attention.
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