The Claim
Physical education professionals in Brazil who engage in high-volume training (averaging 5.1 hours per week) do not exhibit biochemical or physiological markers of overtraining syndrome, due to the absence of objective measurements such as creatine kinase, testosterone, cortisol, heart rate variability, and oxygen uptake in the study.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Brazilian gym teachers who train a lot each week don’t seem to get overtrained — but the study didn’t actually measure key body signals like stress hormones or muscle damage, so we can’t be sure.
See the scientific wording
Physical education professionals in Brazil who train at high volumes (average 5.1 hours/week) do not show biochemical or physiological markers of overtraining syndrome, as the study lacked objective measures such as creatine kinase, testosterone, cortisol, heart rate variability, and oxygen uptake
What the research says
1 studyThe study asked fitness pros how they felt instead of testing their blood or body signals, so it supports that they don’t feel overtrained, but didn’t check the specific body markers the claim talks about.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.