Male infertility is one of the most stressful factors of couples, being present in about 40% cases. It is usually caused by a low number of sperm (oligozoospermia) or poor sperm motility (asthenozoospermia). The sperm motility is used as an indicator of semen quality and male infertility. To the impairment of male reproduction health can contribute genetic, nutritional and environmental factors, smoking and drugs.
Low level of coenzyme Q10 contributes to the decreased sperm motility, which plays a vital role in sperm mitochondrial energy production and neutralization of reactive oxygen species (ROS).