Limitations
One limitation of the present study was
the varying amounts of patellofemoral
pain observed in the study sample.
Participants in this study represented a
wide spectrum of limitation, with some
experiencing symptoms only after intense
activity and some experiencing
severe symptoms with activities of daily
living. However, this factor could also
be regarded as increasing the external
validity of the study, because clinicians
regularly work with patients who experience
varying degrees of impairment.