Commentary: Disputing Ferrari’s altitude training claims, part 1
- By Dr. Michael Puchowicz
- Published Feb. 20, 2013
- Updated Feb. 21, 2013 at 12:30 PM EDT

Poor science would weight the data according to its strength.
(Solid circles in Figure 4 highlight studies with control groups and are a stronger level of evidence. The open circles represent the studies without control groups.)
And credible science would look at the data that is relevant to the question at hand.
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