Key result
Repeated electrical stimulated isometric muscle contractions induced sarcomere-level damage, evidenced by z-line disruption and increased creatine kinase activity (P<0.05).
Why the study?
Does repeated electrically stimulated isometric contraction induce muscle damage at the level of the sarcomere in young healthy men?
Does repeated electrically stimulated isometric contraction induce muscle damage at the level of the sarcomere in young healthy men?
p-value: p=<0.05
Repeated electrically stimulated isometric muscle contractions can induce muscle damage at the myofiber and sarcomere levels without lengthening contractions.
No takes yet. Share an insight, caveat, or question.
Hypothesis-generating for sarcomere damage without lengthening contractions; leaves open relevance beyond young healthy men.
Mackey et al. (2008) studied Healthy (n=7). Repeated electrical stimulated isometric muscle contractions vs. Contralateral leg was evaluated on Muscle damage (macrophage infiltration, intermediate filament disruption, z-line disruption, and creatine kinase activity) (p=<0.05). Repeated electrical stimulated isometric muscle contractions induced sarcomere-level damage, evidenced by z-line disruption and increased creatine kinase activity (P<0.05).
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