Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

191 questions · 201 findings · 59 reviews

No studies found 39 · 19.4%GRADE not reported 2 · 1%Very low 60 · 29.9%Low 57 · 28.4%Moderate 32 · 15.9%High 11 · 5.5%

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)

Usual pain (short‐term) · 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 (short‐term) Scale (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)

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)

Pain during activity (short‐term) · 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 (short‐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