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This research evaluates muscle damage responses in elbow flexors after two types of exercises.

March 15, 2026Scientific ReportsOpen Access

Acute muscle damage responses in elbow flexors following eccentric quasi-isometric exercise

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This research evaluates muscle damage responses in elbow flexors after two types of exercises.
Healthy young men (n=30) assigned to eccentric quasi-isometric (EQI) or eccentric (ECC) exercises
Participants performed 5 sets of dumbbell elbow flexion to failure
Measured variables included MVC, ROM, CIR, PPT, CK, Mb, and TUT before and after exercise.
ECC resulted in a 30% reduction in MVC versus 15% in EQI
ROM decreased by 27% in ECC compared to 13% in EQI
Peak CK levels were significantly higher in ECC (11,601 IU/L) than in EQI (135.2 IU/L)

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Eccentric exercise shows more muscle damage in elbow flexors than eccentric quasi-isometric exercise, suggesting superior recovery.

Lin et al. (2026) studied this question.

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