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.

[EX Q]: A pilot study on the effect of progressive muscle relaxation training of patients after stoma surgery .
[EX A]: progressive muscle relaxation training

[EX Q]: Before and after the 12 week supplementation period , subjects cycled for 45 min at submaximal intensity ( 50 % maximal workload capacity ) .
[EX A]: cycled

[EX Q]: Antipyrine was used as marker for oxidative stress .
[EX A]:
not found