Your muscles adapt to hard eccentric exercise faster than you think—after just 10 weekly sessions, they stop showing any signs of damage.
Scientific Claim
The repeated bout effect in eccentric exercise occurs rapidly in healthy young men, with full adaptation to biomarker response achieved within 10 weekly sessions of maximal isokinetic training.
Original Statement
“During the nine following sessions, this effect progressively diminished, while after the 10th week of training, no alterations in muscle damage biomarkers were observed after either exercise protocol.”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
definitive
Can make definitive causal claims
Assessment Explanation
The repeated-measures RCT design with clear temporal progression supports definitive description of the adaptation timeline observed.
Evidence from Studies
Supporting (1)
Eccentric exercise per se does not affect muscle damage biomarkers: early and late phase adaptations
After doing intense leg exercises once, your muscles get sore and damaged—but after doing them 10 times, your body gets used to it and stops getting sore or damaged, even though you're still working just as hard.