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To investigate whether or not the ingestion of caffeine with alter airway responsiveness to methacholine and/or change the level of exhaled nitric oxide.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| coffee with caffeine | Experimental |
| |
| decaffeinated coffee | Placebo Comparator | Starbuck's Grande Pike Roast Decaf |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| caffeine | Other | Starbuck's Grande Pike Roast coffee |
| |
| Measure | Description | Time Frame |
|---|---|---|
| methacholine pc20 | 1 hour post ingestion |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Donald W Cockcroft, MD | University of Saskatchewan | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of Saskatchewan | Saskatoon | Saskatchewan | S7N 0W8 | Canada |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 21726992 | Derived | Yurach MT, Davis BE, Cockcroft DW. The effect of caffeinated coffee on airway response to methacholine and exhaled nitric oxide. Respir Med. 2011 Nov;105(11):1606-10. doi: 10.1016/j.rmed.2011.06.006. Epub 2011 Jul 2. |
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| ID | Term |
|---|---|
| D001249 | Asthma |
| ID | Term |
|---|---|
| D001982 | Bronchial Diseases |
| D012140 | Respiratory Tract Diseases |
| D008173 | Lung Diseases, Obstructive |
| D008171 | Lung Diseases |
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| ID | Term |
|---|---|
| D002110 | Caffeine |
| ID | Term |
|---|---|
| D014970 | Xanthines |
| D000470 | Alkaloids |
| D006571 | Heterocyclic Compounds |
| D011688 | Purinones |
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| No caffeine |
| Other |
Starbuck's Grande Pike Roast Decaffeinated Coffee |
|
| D012130 |
| Respiratory Hypersensitivity |
| D006969 | Hypersensitivity, Immediate |
| D006967 | Hypersensitivity |
| D007154 | Immune System Diseases |
| D011687 |
| Purines |
| D006574 | Heterocyclic Compounds, 2-Ring |
| D000072471 | Heterocyclic Compounds, Fused-Ring |