instruction:
In medical studies, the efficacy of medical treatments (called interventions) is evaluated within a group of study participants. You will be given a sentence of a study report in which your task is to list the phrases that describe the intervention(s) of the study. You should list the phrase in the same order that they appear in the text, separated by commas. If no information about the interventions is mentioned, just answer with "not found". Interventions are: a specific drug, surgery, talking therapy, a lifestyle modification, control or placebo treatment. Do not include details, dosages, frequency and duration, intervention mentions that are not in an informative span of text.
question:
We conducted a study including 15 depressive patients who had been under antidepressant treatment for at least one month .
answer:
antidepressant


question:
MAIN MEASURES PTSD symptom severity was the primary outcome .
answer:
not found


question:
The effects of 12 weeks of antioxidant supplementation on exercise-induced oxidative stress were investigated in older adults ( 60 ( SE 1 ) years ; BMI 26 ( SE 1 ) kg/m ( 2 ) ) .
answer:

antioxidant supplementation