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Fat Oxidation

Fat Oxidation is the percentage of caloric expenditure that is derived from fatty acids (the alternative being mostly from glucose); it is independent of actual metabolic rate.

Research analysis led by and reviewed by the Examine team.
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Human Effect Matrix

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The Human Effect Matrix looks at human studies to tell you what supplements affect Fat Oxidation.

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Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
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.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-a Minor Very High See all 8 studies
There appears to be a slight but unreliable increase in fat oxidation (percentage of overall calories used coming from fatty acids rather than glucose) associated with consumption of green tea catechins
grade-b Minor Low See all 3 studies
In prolonged exercise and somewhat related to the antifatigue effects, an increase in fat oxidation is noted with BCAA supplementation; this is thought to be related to the glycogen preserving effects of BCAAs.
grade-b Minor Very High See all 3 studies
An increase in fat oxidation appears to be apparent (assessed via increased serum glycerol and free fatty acids) which is thought to be secondary to increases in adrenaline

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