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| Name | Class |
|---|---|
| Mayo Clinic | OTHER |
| Des Moines University | OTHER |
| Lindenwood University | OTHER |
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The purpose of this study was to assess the usefulness of protein and carbohydrate supplementation, with and without creatine, on occupational performance in firefighters. Research has examined the effects of adding creatine to whey protein and carbohydrates on training adaptations in resistance-trained individuals with mixed finding.
Furthermore, the ergogenic benefit of protein and carbohydrate supplementation, with or without creatine, in firefighters is largely unknown. Therefore, the primary aim of the current study was to examine the effects of protein and carbohydrate supplementation, with or without creatine, on occupational performance in firefighters.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Creatine Monohydrate Group | Experimental | 25 grams of Whey Protein Isolate + 25 grams of Carbohydrate Powder + 5 grams of Creatine |
|
| Non Creatine Group | Placebo Comparator | 25 grams of Whey Protein Isolate + 25 grams of Carbohydrate Powder only |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Creatine Monohydrate | Dietary Supplement | Participants were assigned to ingest a single serving daily of either A) a 25-gram dose of whey protein isolate + 25-gram dose of carbohydrate powder (ProCarb); or B) a 25-gram dose of Whey Protein Isolate + 25-gram dose of carbohydrate powder + 5-gram dose of creatine monohydrate (Creatine) for a 17-21-day period. |
| Measure | Description | Time Frame |
|---|---|---|
| Time to completion | Time to completion for tasks including a hose carry, body drag, stair climb, and forcible entry (Keiser sled hammer) for time. For the hose carry, firefighters advanced a 30.48 m section of a charged 4.45 cm hose line over a distance of 30.5 m in a straight line before flowing water for 2 seconds. Rescue consisted of firefighters being instructed to grasp a mannequin (mass 50 kg, height: 180 cm) underneath the shoulders using a "seatbelt" grip and dragging the mannequin 30.5 m backward. This test is known as the body drag. Stair climb consisted of climbing four flights of stairs and returning to the bottom as quickly as possible. In the forcible entry, firefighters struck a simulated forcible entry chopping device (Keiser FORCE Machine, Keiser Co., USA) using a 3.6 kg sledgehammer until completed. The total time to complete each task was recorded, in addition to the total completion time for all tasks summed together. | 24 Days |
| Time Trial | A maximal effort, 3.5 km time trial on an air-braked cycle ergometer (Assault Bike, As-sault Fitness Products, Carlsbad, CA, USA). | 24 Days |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Andrew Jagim, PhD | Mayo Clinic | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Fire Department | La Crosse | Wisconsin | 54601 | United States |
Deidentified data is available upon request.
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| ID | Term |
|---|---|
| D005221 | Fatigue |
| ID | Term |
|---|---|
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
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| ID | Term |
|---|---|
| D003401 | Creatine |
| ID | Term |
|---|---|
| D006146 | Guanidines |
| D000578 | Amidines |
| D009930 | Organic Chemicals |
| D000596 | Amino Acids |
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| Control | Dietary Supplement | A 25-gram dose of whey protein isolate + 25-gram dose of carbohydrate powder (ProCarb) |
|
| D000602 |
| Amino Acids, Peptides, and Proteins |