Exercise Performance
Conditions
Brief summary
Creatine supplementation has been shown to increase exercise performance at sea level. The goal of this study is to determine the effects of creatine supplementation on exercise performance at simulated altitude.
Detailed description
Military personnel often encounter harsh environments such as high altitudes and hypoxic conditions, leading to significant constraints on their exercise capacity and performance. At sea-level creatine supplementation increases exercise performance; however no experimental studies have examined the effect of creatine supplementation at simulated altitude. The overall objective of this study is to investigate the effects of creatine supplementation on exercise performance, via a repeated sprints test (Wingate Test) after a 2-day supplementation period, compared to a placebo group.
Interventions
DIETARY_SUPPLEMENTPlacebo
Participants given 40 grams of glucose in total to be taken over 2 days, in 5-gram servings (4 capsules), 4 times per day.
DIETARY_SUPPLEMENTCreatine
Participants given 40 grams of creatine in total to be taken over 2 days, in 5-gram servings (4 capsules), 4 times per day.
Sponsors
California Polytechnic State University-San Luis Obispo
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Masking description
Research staff collecting data will be masked to intervention
Intervention model description
Randomized study to two arms: 1) creatine supplementation, 2) glucose supplementation
Eligibility
Sex/Gender
ALL
Age
18 Years to 40 Years
Healthy volunteers
Yes
Inclusion criteria
* 18-40 years old * BMI 18.5 to 40 kg/m2 * Habitually active (\>150 minutes per week of moderate-vigorous physical activity)
Exclusion criteria
* Pregnant or trying to become pregnant * Recent use of creatine supplementation * Supplemental allergies
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Peak power | Change from baseline to 3 days | Peak power is measured in watts. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Body Weight | Change from baseline to 3 days | Body weight is measured in kilograms. |
| Relative peak power | Change from baseline to 3 days | Relative peak power is measured in watts per kilogram. |
| Mean power | Change from baseline to 3 days | Mean power is measured in watts. |
| Relative mean power | Change from baseline to 3 days | Relative mean power is measured in watts per kilogram. |
| Fatigue index | Change from baseline to 3 days | Fatigue index is measured in watts per second. |
Countries
United States
Contacts
Primary ContactTodd Hagobian, PhD
Outcome results
None listed