Does Eucharistic Adoration fulfill the Obligation of Penance required of all Catholics on Fridays throughout the year?

While giving a presentation on the Blessed Sacrament, I was informed that Eucharistic Adoration does not fulfill our requirement to do penance on Fridays during the year. After a brief disagreement with the objection to my insistence that it did fulfill the requirement. I humbled myself and let the person objection stand. Determined to find the answer, I can find no indication that Eucharistic Adoration cannot be a form of Penance satisfying the Catholics obligation to unite themselves to Christ Passion. The Penance that a Catholic should perform on Fridays can come in many forms, including Prayer, Attending mass and acts of Piety. It is my opinion that Eucharistic adoration is an act fo Piety. I am looking for a source that indicates that Eucharistic Adoration satisfies the Friday obligation to do Penance. Knowing full well that the preferred method is fasting, especially with abstinence from Meat. This question I believe would be for Catholics under the authority of Catholic Bishops, and may not be uniform outside the USA.