protocolSection identificationModule nctId: NCT06332248, orgStudyIdInfo id: 2014/1023-31/4 & 2014/274-31/5, briefTitle: Possible Effects of the Dietary Supplement Magnesium Compared to Placebo, statusModule overallStatus: COMPLETED, startDateStruct date: 2014-09-15, primaryCompletionDateStruct date: 2015-05-20, completionDateStruct date: 2015-05-28, studyFirstPostDateStruct date: 2024-03-27, lastUpdatePostDateStruct date: 2024-03-27, sponsorCollaboratorsModule leadSponsor name: Dan Hasson, class: OTHER, collaborators name: Stiftelsen Stressmottagningen, collaborators name: AFA Insurance, descriptionModule briefSummary: The goal of this clinical trial was to investigate possible outcomes of the nutritional supplement magnesium compared to placebo in healthy, working adults. The main questions it aimed to answer were:* Are there differences in ratings of health, stress, well-being and work environment indicators between individuals intaking 375 mg magnesium (daily for 3 months) compared to placebo?* Are there differences in hearing, measured with hearing tests between those receiving 375 mg magnesium compared to placebo?Participants were asked to ingest 375 mg magnesium or placebo daily for 3 months.Researchers compared the group ingesting magnesium with the group ingesting placebo pills to see if there were any differences in for example self-rated health, recovery, wellbeing, etc., conditionsModule conditions: Health Promotion, designModule studyType: INTERVENTIONAL, phases: NA, designInfo allocation: RANDOMIZED, interventionModel: PARALLEL, interventionModelDescription: Participants received either 375 mg nutritional supplement magnesium or placebo pill., primaryPurpose: SUPPORTIVE_CARE, maskingInfo masking: TRIPLE, whoMasked: PARTICIPANT, whoMasked: INVESTIGATOR, whoMasked: OUTCOMES_ASSESSOR, enrollmentInfo count: 1013, type: ACTUAL, armsInterventionsModule interventions name: Magnesium, interventions name: Placebo, outcomesModule primaryOutcomes measure: Time x group difference in HealthWatch-11 (questionnaire), secondaryOutcomes measure: Intervention compliance measure 1 (objective, number of pills left), secondaryOutcomes measure: Intervention compliance measure 2 (subjective, marked days in calendar), otherOutcomes measure: Time x group difference in Oldenburg Burnout Inventory (questionnaire), otherOutcomes measure: Time x group difference in Karolinska Sleep Questionnaire, otherOutcomes measure: Time x group difference in Pure Tone Audiogram (clinical hearing test), otherOutcomes measure: Time x group difference in Speech in noise test (clinical hearing test), otherOutcomes measure: Time x group difference in Uncomfortable loudness level (clinical hearing test), otherOutcomes measure: Time x group difference in single questionnaire item assessing sick leave, otherOutcomes measure: Time x group difference in single questionnaire item assessing sickness presenteeism, otherOutcomes measure: Time x group difference in prevalence of pain (questionnaire), otherOutcomes measure: Time x group difference in pain frequency (questionnaire), otherOutcomes measure: Time x group difference in pain discomfort (questionnaire), otherOutcomes measure: Time x group difference in pain intensity (questionnaire), otherOutcomes measure: Time x group difference in functional impairment due to pain (questionnaire), eligibilityModule sex: ALL, minimumAge: 18 Years, stdAges: ADULT, stdAges: OLDER_ADULT, contactsLocationsModule, hasResults: False