OMICS International OMICS International is a scientific organization that drives the progress of research through open access journals and organizes international conferences, The best in science news, commentary, and research. Journal of Nutrition Research Volume 2, Issue 2 Exogenous Supraphysiological Doses of AnabolicAndrogenic SteroidsControversial and Reciprocal Effects on Performance and Organs Hamid Arazi Factors Affecting Sleep Quality among Adolescent Athletes Hoi Man Lo, Joyce Hoi Yee Leung, Gavin Ka Yin Chau, Michael HS Lam, Ka Yiu Lee and Alex Ho Physical Activity Measurements in Sport Field Objective or SubjectiveMeasures Michael HS Lam and Ka Yiu Lee