Different discrete motor-unit activation patterns in the flexor carpi radialis in boys and men

ConclusionCompared with men, boys tended to recruit their MUs earlier and at a lower percentage of MVIC. This difference in MU recruitment may explain the greater decrease in MUFR with increasing RT in boys compared with men. Overall, these findings suggest an age-related difference in the neural strategy used to develop moderate –high torque in wrist flexors, where boys recruit more of their MUs earlier in the force gradation process, possibly resulting in a narrower recruitment range.
Source: European Journal of Applied Physiology - Category: Physiology Source Type: research