ALT	Alanine aminotransferase
ANCOVA	Analysis of covariance
AST	Aspartate aminotransferase
AUC	Area-under-the-curve
BMI	Body mass index
CIS	Checklist individual strength
Cmax	Maximum observed concentration
CRF	Case report form
e-CRFs	Electronic case report forms
EDC	Electronic data capture
eNOS	endothelial NO synthase
FA	Full analysis
FSS	Fatigue Severity Scale
IPs	Investigational products
IRB	Institutional Review Board
LDH	Lactate dehydrogenase
MFS	Multidimensional fatigue scale
NO	Nitric oxide or nitric-oxide
PP	Per-protocol
PSQI	Pittsburgh Sleep Quality Index
PSQI-K	Korean Pittsburgh Sleep Quality Index
RPE	Rating of perceived exertion
SAEs	Serious adverse events
SBP	Systolic blood pressure
Tmax	Time of maximum concentration
ULN	Upper limit of normal
χ2	Chi-square test