Effect of lavender and rosemary aromatherapy on test anxiety in chiropractic students.

Test anxiety is a debilitating disorder that can impair cognitive performance and affect academic success. Aromatherapy is commonly used for relaxation therapy. The primary aim of the study was to determine if nasal inhaler aromatherapy, utilizing a blend of rosemary and lavender essential oils, could be a useful strategy to reduce testing anxiety in students. This study recruited first trimester chiropractic students enrolled in both Neuroanatomy I and Biochemistry I. A randomized crossover design was utilized over 2 study days during final exams, with a 2-day wash-out period. Participants were randomly assigned into groups based on results of test anxiety analysis. On each day, students were given a nasal inhaler with either an aromatherapy blend of lavender and rosemary essential oils or distilled water as the control. Students completed pretest surveys and posttest surveys to rate their anxiety levels. Paired sample t-tests were performed to determine group differences in test anxiety. Both intention-to-treat and per-protocol analyses were conducted. Forty-five students were randomly assigned into the study, whereas only 38 completed per-protocol. Between group comparisons showed no statistically significant difference between change in anxiety scores between aromatherapy and control for both intention-to-treat (p =.10) and per-protocol (p =.07). Use of personal inhalers and aromatherapy diffusers were not shown to reduce test anxiety in a chiropractic population under high-stakes examination. Other options should be explored for future research.