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Rate of Perceived Exertion

The rate of percieved exertion (RPE) is a subjective measurement of how difficult it is to conduct an exercise, usually used during cardiovascular exercise. Reducing the RPE may help with performance by allowing one to push harder (due to less difficulty and pain).

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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 Rate of Perceived Exertion.

Full details on all Rate of Perceived Exertion supplements are available to Examine members.
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-b Minor High See all 5 studies
Although the effects are somewhat unreliable, there appears to be a reduction in the rate of perceived exertion associated with caffeine ingestion
grade-b - Very High See all 10 studies
Although there is some limited evidence that sodium bicarbonate can increase 'percieved readiness' for a task and ample evidence that it can reduce the rate of neuromuscular decline (seen with fatigue), the actual rate of percieved exertion (how hard an exercise feels) is wholly unaffected.
grade-b - Very High See all 3 studies
No significant influence of betaine (acute or two weeks of supplementation) on the rate of perceived exertion.

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Things to Note

Also Known As

RPE