Findings

What do systematic reviews say?

180 questions · 182 findings · 32 reviews · Airways

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No studies found 23 · 12.6%GRADE not reported 1 · 0.5%Very low 28 · 15.4%Low 86 · 47.3%Moderate 42 · 23.1%High 2 · 1.1%

Upper limb exercise training vs No upper limb training

Health‐related quality of life · stable COPD

1 finding from 1 review

Upper limb exercise training for COPD 2016 · Cochrane Headline outcomes only
no estimate extracted
4 studies · 126 participants
Moderate

Upper limb exercise training vs No upper limb training

Upper Limb Strength · stable COPD

1 finding from 1 review

Upper limb exercise training for COPD 2016 · Cochrane Headline outcomes only
no estimate extracted
2 studies · 43 participants
Low

Intervention not reported

Health‐related quality of life · participants with asthma

The review found no eligible studies for this question.

1 finding from 1 review

Vitamins C and E for asthma and exercise‐induced bronchoconstriction 2014 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Intervention not reported

Asthma exacerbation as defined by hospital admission or treatment with a course of oral corticosteroids · participants with asthma

The review found no eligible studies for this question.

1 finding from 1 review

Vitamins C and E for asthma and exercise‐induced bronchoconstriction 2014 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Intervention not reported

Lung function (FEV1, PEF) · participants with asthma

1 finding from 1 review

Vitamins C and E for asthma and exercise‐induced bronchoconstriction 2014 · Cochrane Headline outcomes only
no estimate extracted
3 studies · 192 participants
Moderate

Intervention not reported

Symptoms · participants with asthma

1 finding from 1 review

Vitamins C and E for asthma and exercise‐induced bronchoconstriction 2014 · Cochrane Headline outcomes only
no estimate extracted
1 study · 15 participants
Low

Intervention not reported

Adverse events · participants with asthma

1 finding from 1 review

Vitamins C and E for asthma and exercise‐induced bronchoconstriction 2014 · Cochrane Headline outcomes only
no estimate extracted
1 study · 15 participants
Low

Intervention not reported

Quality of life · Participants with primary dysfunctional breathing/hyperventilation syndrome

The review found no eligible studies for this question.

1 finding from 1 review

Breathing exercises for dysfunctional breathing/hyperventilation syndrome in adults 2013 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Intervention not reported

Symptoms (approx 4 weeks · Participants with primary dysfunctional breathing/hyperventilation syndrome

1 finding from 1 review

Breathing exercises for dysfunctional breathing/hyperventilation syndrome in adults 2013 · Cochrane Headline outcomes only
no estimate extracted
1 study · 41 participants
Very low

Intervention not reported

Quality of life · children with dysfunctional breathing/hyperventilation syndrome

The review found no eligible studies for this question.

1 finding from 1 review

Breathing exercises for dysfunctional breathing/hyperventilation syndrome in children 2013 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Intervention not reported

Nijmegen questionnaire · children with dysfunctional breathing/hyperventilation syndrome

The review found no eligible studies for this question.

1 finding from 1 review

Breathing exercises for dysfunctional breathing/hyperventilation syndrome in children 2013 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Intervention not reported

Ventilation · children with dysfunctional breathing/hyperventilation syndrome

The review found no eligible studies for this question.

1 finding from 1 review

Breathing exercises for dysfunctional breathing/hyperventilation syndrome in children 2013 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Intervention not reported

Dysfunctional breathing‐specific tests (e.g. breath hold test or hyperventilation provocation test (HVPT)) · children with dysfunctional breathing/hyperventilation syndrome

The review found no eligible studies for this question.

1 finding from 1 review

Breathing exercises for dysfunctional breathing/hyperventilation syndrome in children 2013 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Vitamin C vs placebo

Health‐related quality of life (HRQL) · people with asthma

1 finding from 1 review

Vitamin C for asthma and exercise‐induced bronchoconstriction 2013 · Cochrane Headline outcomes only
no estimate extracted
1 study · 201 participants
Low

Vitamin C vs placebo

Asthma exacerbations · people with asthma

1 finding from 1 review

Vitamin C for asthma and exercise‐induced bronchoconstriction 2013 · Cochrane Headline outcomes only
no estimate extracted
1 study · 16 participants
Very low

Vitamin C vs placebo

Lung function: FEV1 mL (change from baseline) · people with asthma

1 finding from 1 review

Vitamin C for asthma and exercise‐induced bronchoconstriction 2013 · Cochrane Headline outcomes only
no estimate extracted
1 study · 201 participants
Moderate

Vitamin C vs placebo

Asthma symptoms · people with asthma

1 finding from 1 review

Vitamin C for asthma and exercise‐induced bronchoconstriction 2013 · Cochrane Headline outcomes only
no estimate extracted
1 study · 201 participants
Moderate

Vitamin C vs placebo

Adverse events · people with asthma

1 finding from 1 review

Vitamin C for asthma and exercise‐induced bronchoconstriction 2013 · Cochrane Headline outcomes only
no estimate extracted
1 study · 41 participants
Very low

Pursed lip breathing vs expiratory muscle training

Dyspnea · patients with chronic obstructive pulmonary disease

1 finding from 1 review

Breathing exercises for chronic obstructive pulmonary disease 2012 · Cochrane Headline outcomes only
no estimate extracted
1 study · 17 participants
Low

Intervention not reported

Health‐related Quality of Life: Dyspnoea domain of the CRQ · people with chronic obstructive pulmonary disease

1 finding from 1 review

Optimal intensity and type of leg exercise training for people with chronic obstructive pulmonary disease 2011 · Cochrane Headline outcomes only
no estimate extracted
4 studies · 212 participants
Moderate