2002
Physical Activity, Body Mass Index, and Ovulatory Disorder Infertility
Rich-Edwards JW, Spiegelman D, Garland M, Hertzmark E, Hunter DJ, Colditz GA, Willett WC, Wand H, Manson JE. Physical Activity, Body Mass Index, and Ovulatory Disorder Infertility. Epidemiology 2002, 13: 184-190. PMID: 11880759, DOI: 10.1097/00001648-200203000-00013.Peer-Reviewed Original ResearchConceptsBody mass indexOvulatory disorder infertilityHealth Study IIOvulatory infertilityRelative riskMass indexVigorous activityNurses' Health Study IIVigorous-intensity exerciseLower relative riskAmerican womenAdiposity levelsIntensity exercisePhysical activitySedentary lifestyleBMI distributionInfertilityU.S. womenStudy IIWomenUnderweightRiskWeekly activitiesAssociationHours
1996
Reproducibility and Validity of a Self-Administered Physical Activity Questionnaire for Male Health Professionals
Chasan-Taber S, Rimm E, Stampfer M, Spiegelman D, Colditz G, Giovannucci E, Ascherio A, Willett W. Reproducibility and Validity of a Self-Administered Physical Activity Questionnaire for Male Health Professionals. Epidemiology 1996, 7: 81-86. PMID: 8664406, DOI: 10.1097/00001648-199601000-00014.Peer-Reviewed Original ResearchConceptsPhysical Activity QuestionnaireActivity QuestionnaireVigorous activityNonvigorous activitiesActivity scoreSelf-administered physical activity questionnaireMale health professionalsParticipants 2 yearsIntraclass correlation coefficientProspective studyHealth professionalsStudy participantsPulse rateActivity diaryStep testWeekly activitiesQuestionnaireDiary measurementsInactivityScoresParticipantsUseful measureActivityParticipants' abilityYears