After a 24-hour race, the levels of certain tiny muscle molecules in the blood match up better with how weak the runners still feel the next day than the usual muscle damage markers do.
Scientific Claim
In elite athletes after a 24-hour ultramarathon, changes in muscle-specific microRNA levels are significantly correlated with the degree of persistent muscle power loss 24 hours post-race, while creatine kinase and myoglobin levels are not.
Original Statement
“Circulating myomiR levels ... significantly (p < 0.05) correlated or tended to significantly (p < 0.07) correlate with the reduction in CMJ height at 24 h. We found no significant correlation between CMJ height loss at 24 h and CK (p = 0.23) or Mb (p = 0.41) values”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design cannot support claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
The claim uses 'correlated' appropriately for an observational study. The abstract explicitly states correlation results and p-values, supporting this exact phrasing.
Evidence from Studies
Supporting (1)
Unknown Title
After a super-long race, the athletes’ muscles were still weak 24 hours later, and the study found that certain tiny muscle signals (microRNAs) matched how weak they were — but common blood markers like CK and myoglobin didn’t.