On the issue of inter-correlation in proprioceptive ability across body areas: a comment on Han, et al. (2013)

In this comment, a critical point of view is presented regarding a recent report by Han, et al. (2013), where the authors asked whether proprioceptive acuity in a given joint is correlated with that in another joint. The criticism is first directed at the rationale of the study to address the problem of establishing parallels between physiological processes involved in muscle force production and pain and those involved in proprioception. Then, some issues are indicated with regard to the methodology used in the report to assess proprioceptive acuity at different joints.