About this trial
This protocol is a retrospective study using the observational data of the the Prostate, Lung, Colorectal, and Ovarian (PLCO) screening trial with over 150,000 participants aged 55-74 years to conduct a target trial emulation to examine the association between self-reported exercise and all cause and cause-specific mortality in apparently healthy, middle-aged and older adults. The PLCO includes assessments of participants' exercise level at two timepoints: at randomization into the PLCO trial (Q0) and 5-7 years after randomization into the PLCO (Q1).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Adults enrolled into the PLCO screening trial.
Among participants reporting low exercise at Q0 (i.e., 0 or less than 1 day/week, with each session <15 minutes in duration), completion of an exercise survey at Q1 as part of PLCO standard trial procedures no later than 5 years after reporting non-exercising status [i.e., no exercise) at Q0.
No evidence of any of the following absolute contraindications to exercise: uncontrolled hypertension, symptomatic valvular disease; hypertrophic cardiomyopathy; unstable angina pectoris; primary pulmonary hypertension; heart failure; severe arrhythmia; diagnosed dementia; any form of cancer other than non-melanoma, and severe infectious disease.
Disqualifiers
None
Trial population
Adults enrolled into the PLCO screening trial
Trial design
Cohort
Retrospective
Treatments tested in this trial
Control
Behavioral0 or less than 1 day per week, with each session, on average \< 15 minutes.
Exercise
Behavioral\>/= 2 days per week of moderate or vigorous intensity, with each session, on average, \>/=20 minutes in duration.
Treatment groups
Trial outcomes
Primary outcomes
Overall survival (all-cause mortality)
All-cause mortality (death from any cause) occurring within the follow-up period in the PLCO screening trial.
Cause-specific mortality
Cause-specific mortality (cancer mortality, mortality from other causes) occurring within the total follow-up period in the PLCO screening trial.
Secondary outcomes
Cancer incidence
Cancer incidence occurring within the total follow-up period in the PLCO screening trial.
Other outcomes
Exploratory Analyses #1
Analyses to examine whether the association between exercise vs. control with all-cause mortality differs as a function of: * Sex (male vs. female) * Age (\<50 years vs. =/\>50 years)
Exploratory Analyses #2
Examine the association between exercise vs. control with incidence of individual cancer types.
Sponsors and contacts
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