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).


Research analysis by and verified by the Examine.com Research Team. Last updated on Apr 29, 2017.

Human Effect Matrix

The Human Effect Matrix looks at human studies (it excludes animal and in vitro studies) to tell you what supplements affect rate of perceived exertion

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.
Outcome 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
Caffeine
All comparative evidence is now gathered in our ​Supplement Goals Reference.
The evidence for each separate supplement is still freely available ​here.
Sodium Bicarbonate  
Branched Chain Amino Acids  
Coenzyme Q10  
L-Carnitine  
Nitrate  
Rhodiola Rosea  
Vitamin C  
Choline  
Eleutherococcus senticosus  
Ginger  
Kaempferia parviflora  
Leucine  
Maca  
Panax ginseng  
Taurine  
Trimethylglycine  
Ashwagandha  
Cocoa Extract