Growth Hormone
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Human Effect Matrix
The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect growth hormone.
| Grade | Level of Evidence [show legend] |
|---|---|
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Robust research conducted with repeated double-blind clinical trials |
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Multiple studies where at least two are double-blind and placebo controlled |
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Single double-blind study or multiple cohort studies |
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Uncontrolled or observational studies only |
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Level of Evidence
?
The amount of high quality evidence. The more
evidence, the more we can trust the results.
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Supplement |
Magnitude of effect
?
The direction and size of the supplement's impact on
each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
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Consistency of research results
?
Scientific research does not always agree. HIGH or
VERY HIGH means that most of the scientific research agrees.
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Notes |
|---|---|---|---|---|
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Minor
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- See all 5 studies |
Arginine has been implicated in increasing growth hormone (at rest) and suppressing an exercise-induced increase in growth hormone; both of these are short in duration, and it is unsure if there are any long lasting effects of such short a spike.
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Notable
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- See all 4 studies |
During exercise, creatine supplementation can suppress growth hormone secretion: up to 35% during loading; up to 5% during maintenance. At rest, creatine supplementation can spike growth hormone by up to 83±45%. This bidirectional effect is similar to that of arginine supplementation.
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Minor
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Very High See 2 studies |
Has noted an increase in circulating growth hormone, but measurements were acute (whole-day measurements of growth hormone are more reliable due to hourly fluctuations)
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Things to Note
Also Known As
GH
