Effects of Occupational Therapy Program Based on Active Meditation on Hair Cortisol Levels in Undergraduate Healthcare Students.
Alejandra Espinosa, Rodolfo Morrison, Diego Gonzalez and 9 others
PMID 35800975WHAT IT FOUND
The active meditation group did not show a significant reduction in hair cortisol compared to the control group.
However, cortisol levels in the meditation group stayed stable, while levels in the control group increased significantly over the semester.
Key findings
01There were no significant statistical differences in hair cortisol levels between the control and treated groups at baseline or after the intervention.
02Hair cortisol levels in the control group increased significantly over the three months, whereas levels in the meditation group remained similar to baseline.
03Individual pre- and post-treatment cortisol values showed significant differences within each subject, with the meditation group showing a median decrease of 30 pg/mg.
STILL TO COME
How it was doneWhat they foundWhat it means for OTs
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What it does not show
The sample size was very small (22 participants), limiting statistical power. Randomization method was not described in detail, and group allocation appeared based on availability or interest rather than strict random protocols. The control group participated in a painting course, which was a new activity and potentially stressful in itself, complicating the comparison. Environmental factors such as socioeconomic status, personal problems, or specific academic pressures were not controlled or measured. The study did not measure subjective stress levels or anxiety, relying solely on hair cortisol.
Declared interests
The study was conducted at the University of Chile. No specific funding sources or conflicts of interest were declared in the provided text.
The easy way to misread this
Do not interpret the significant within-group decrease in the meditation arm as proof that active meditation reduces stress more effectively than other activities. The difference between the meditation group and the control group was not statistically significant, and the control group's stress levels actually rose.