The Claim

In elite U20 basketball players, elevated creatine kinase levels are moderately associated with reduced sleep quality.

Source: Biochemical and Perceptual Markers of Physiological Stress During Acute Exercise Overload in U20 Elite Basketball Players

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
59score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

Elite U20 basketball players with higher creatine kinase levels tend to report poorer sleep quality.

See the scientific wording

In elite U20 basketball players, creatine kinase levels are moderately associated with reduced sleep quality, suggesting that higher physiological stress may coincide with poorer subjective recovery.

Why this might work

When muscles are damaged from intense exercise, chemicals leak into the blood that signal the brain to increase stress hormones, which then interfere with the body's natural sleep cycle.

Verified mechanismbased on 1 study

What the research says

1 study

  1. Study: Biochemical and Perceptual Markers of Physiological Stress During Acute Exercise Overload in U20 Elite Basketball Players

    In young elite basketball players, when their muscles are more stressed (shown by higher CK levels), they tend to report sleeping worse — the study found this link clearly, even if it’s not a huge effect.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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