correlational
Analysis v1
32
0
After 24 hours without sleep, heart rate drops slightly but then starts rising again over the next 8 hours, suggesting the body's response to sleep loss changes over time.
Scientific Claim
In 40 healthy men aged 31.2±6.3 years with BMI 24.6±2.6 kg/m², 24 hours of sleep deprivation is associated with an initial decrease in heart rate (1.6 bpm) followed by a gradual increase to 60.1 bpm by 32 hours of sleep deprivation.
Original Statement
“HR (bps) 57.8±8.3 56.2±7.6 59.0±12.5 60.1±8.1 p=0.000”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
The study design supports correlational claims about temporal changes in heart rate without implying causation.
Evidence from Studies
Supporting (1)
32
Contradicting (0)
0
No contradicting evidence found