NPPB and heart failure: With regard to the hematologic values associated with myocardial cell injury and heart failure, such as CK, CK-MB, BNP, and NT-pro BNP [33,34], we detected a slight decrease in the level of NT-pro BNP after 24 weeks of supplementation (Table 2), but a highly significant negative correlation was found between plasma coenzyme Q10 and CK activity after 24 weeks of supplementation (Table 3).