Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

252 questions · 261 findings · 21 reviews

No studies found 75 · 28.7%GRADE not reported 3 · 1.1%Very low 66 · 25.3%Low 75 · 28.7%Moderate 27 · 10.3%High 15 · 5.7%

Exercise therapy vs a control strategy (no treatment, placebo or waiting list controls)

Pain during activity (long‐term) VAS (0 to 10; higher scores mean worse pain) · patients with patellofemoral pain syndrome (symptoms > 3 weeks (1 study); symptoms > 1 month (3 studies); symptoms > 2 months (2 studies);…

It is very uncertain whether exercise therapy changes pain during activity (long‐term) Scale (0 to 10; higher scores mean… compared with a control strategy (no treatment, placebo or waiting list controls) (very low certainty).

1 finding from 1 review

Exercise therapy vs a control strategy (no treatment, placebo or waiting list controls)

Patient‐reported pain intensity or pain relief (VAS, NRS or categorical scale) · patients with patellofemoral pain syndrome (symptoms > 3 weeks (1 study); symptoms > 1 month (3 studies); symptoms > 2 months (2 studies);…

It is very uncertain whether exercise therapy changes usual pain (long‐term) VAS (0 to 10; higher scores mean worse pain) compared with a control strategy (no treatment, placebo or waiting list controls) (very low certainty).

1 finding from 1 review

Exercise therapy vs a control strategy (no treatment, placebo or waiting list controls)

Functional ability · patients with patellofemoral pain syndrome (symptoms > 3 weeks (1 study); symptoms > 1 month (3 studies); symptoms > 2 months (2 studies);…

It is very uncertain whether exercise therapy changes functional ability (short‐term) Scale (0 to 100; higher scores mean… compared with a control strategy (no treatment, placebo or waiting list controls) (very low certainty).

2 findings from 1 review

Exercise therapy vs a control strategy (no treatment, placebo or waiting list controls)

Recovered · patients with patellofemoral pain syndrome (symptoms > 3 weeks (1 study); symptoms > 1 month (3 studies); symptoms > 2 months (2 studies);…

It is very uncertain whether exercise therapy changes recovery (long‐term) Number of patients who had recovered or number… compared with a control strategy (no treatment, placebo or waiting list controls) (very low certainty).

1 finding from 1 review