Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,780 questions · 1,852 findings · 204 reviews

No studies found 417 · 22.5%GRADE not reported 58 · 3.1%Very low 577 · 31.2%Low 468 · 25.3%Moderate 272 · 14.7%High 60 · 3.2%

Resistance and endurance exercise prior to influenza vaccination vs no exercise prior to influenza vaccination

Incidence of influenza Self‐reported influenza‐like illness · Adults and elderly

It is very uncertain whether resistance and endurance exercise prior to influenza vaccination changes incidence of influenza Self‐reported influenza‐like illness compared with no exercise prior to influenza vaccination (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