A 2007 study from researchers at the American College of Chest Physicians compared hypnosis to nicotine replacement therapy. Fifty percent of patients who were treated in the hypnotherapy group were still quit at 26 weeks compared to just 15.78 percent in the nicotine replacement group. Patients who underwent NRT and hypnotherapy also experienced a 50-percent success rate at 26 weeks.
As Martens argued for applied methods in sport psychology research, the increasing emergence of practitioners of sport psychology (including sport psychology consultants who taught sport psychology skills and principles to athletes and coaches, and clinical and counseling psychologists who provided counseling and therapy to athletes) brought into focus two key questions and a debate which continues to the present day: under what category does the discipline of sport psychology fall?, and who governs the accepted practices for sport psychology? Is sport psychology a branch of kinesiology or sport and exercise science (like exercise physiology and athletic training)? Is it a branch of psychology or counseling? Or is it an independent discipline?
Hypnosis is not a psychotherapeutic treatment or a form of psychotherapy, but rather a tool or procedure that helps facilitate various types of therapies and medical or psychological treatments. Only trained health care providers certified in clinical hypnosis can decide, with their patient, if hypnosis should be used along with other treatments. As with psychotherapy, the length of hypnosis treatment varies, depending on the complexity of the problem.