In young, healthy men, higher insulin levels are linked to greater blood vessel tightening during stress and less heart output increase. This finding is from the abstract summary - full study details were not available
Scientific Claim
In healthy young men aged 18-22, serum insulin levels are positively correlated with stress-induced changes in total peripheral resistance and inversely correlated with increases in cardiac output during stress.
Original Statement
“Serum insulin correlated significantly to the stress-induced change in total peripheral resistance (r = 0.54; p = 0.02), whereas the increase in cardiac output was inversely related to insulin (r = -0.59; p = 0.007).”
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 abstract uses 'correlated' and 'inversely related', which appropriately describes observational study findings without implying causation.
Evidence from Studies
Supporting (1)
Relation of central hemodynamics to obesity and body fat distribution.