FAIRFIELD, Iowa (AP) — The followers of a meditation practice that has its roots in ancient India are in a dispute over the control of its teaching.

The feud pits the Iowa nonprofit that has taught transcendental meditation in the U.S. for decades against Thom Knoles, a former associate who left and built his own group of followers.

The outcome could decide whether the Maharishi (mah-hah-ree-shee) Foundation will continue to control the teaching of U.S. transcendental meditation — or whether rivals can market similar services and benefits without obtaining a license.

The two sides are fighting for customers and to protect their own reputations. With such stakes, the litigation over a technique that supporters say can reduce stress and blood pressure is getting tense.