Dear Hosam,

Movement speed is produced by muscle force. The higher the force or speed, the higher the number of recruited muscle fibers and the higher the rate of action potentials at the motor endplate (frequency). Thus, movement speed coupled with the muscles activation intensity (measured by means of EMG) are – to my opinion – good predictors for athletes (related to with disciplines in which strength and or RFD determine the performance). In terms of injury: would you like to be more precise? What kind of injuries are you thinking of?

Good literature for neuromuscular correlates in the strength: Komi – strength and conditioning research

Kind regards, Ramona

Speed or Position in Time? Yes, That is a Paradoxical Question, There is no Doubt About it!

I would suggest you to thinking and focus on "position in time", instead of speed. It seems that the best thing you can do for analysis of the controller (the nervous system) is by screening a certain action, and how this action evolves over - a specific period of - time. A screening test should be a movement from position A to B. And the quality of a such movement (position in time) should give you the "actual state" of the controller. However, the controller depends on feedback to correct its own action but if the action is too fast there will be no time for corrections in the movement trajectory (Woodworth 1899; Fits 1954) that is because of limits in nerve conduction velocity (Schmidt 1979). For performing an analysis for injury prevention a low speed movement as a "normal gait" is preferred but remember you need a "discrete movement" for inference or comparison. More specifically, a good screening's candidate for prevention of injuries can be the quality of joint ROM, discrete movement. I would also suggest you, what my studies found is that a neuromuscular recalibration is needed for prevention and rehabilitation of normal motor control, which means "normal motor agility".

Find attached bellow what I suggest for prevention and physical rehabilitation by recalibration of both muscles and joints

Article A Novel Approach that Ameliorates Motor Disabilities and Imp...

Best regards

Dear hosan ,

Neuromuscular control involves the detection, perception, and utilization of relevant sensory information in order to perform specific tasks. Successful performance of a task requires the intricate coordination of various body parts using information provided by peripheral receptors located in and around the articular structures . This feedback provides information that assists with proprioception, balance, and neuromuscular control. It is now well accepted that neuromuscular control impairment can change movement patterns and increase the risk of musculoskeletal injury.

Regards

Dear Vinicious.

thank you for paying attention to my question. very explicit answer. you have mentioned that low speed movement protocols are recommended in regard of injury prevention. i believe prevention is a critical component in the sports injury management that follows the prediction stage in order. however, preventive and predictive measures are the corner stone for injury prevention programs. slow speed movement - in my opinion - dose not represent sports performance characteristics. however, speed, power, agility, coordination, and balance dose.

my point is that emerging speed as a criteria to be assessed in the neuromuscular control test which is conducted to predict potentials of injuries among athletic population.

kind regard.