question: Compared to placebo what was the result of coenzyme Q10 supplementation  on levels of serum CK?
context: Based on the present results, it can be concluded that the 14-day coenzyme Q10 supplementation
  (5mg.kg-1.day-1) is more effective than the acute supplementation to overcome the
  exercise-induced adverse responses in some oxidative, inflammatory and biochemical parameters.