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Ultrarunners Longitudinal TRAcking Study (ULTRA)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02014038
Recruitment Status : Completed
First Posted : December 17, 2013
Last Update Posted : March 19, 2021
University of California, Davis
Information provided by (Responsible Party):
Lorinda S Chung, Stanford University

Brief Summary:
Health status information and physical activity level will be collected longitudinally on a large group of individuals who are ultramarathon runners at the time of enrollment to determine if very high levels of physical activity alter health risks compared with sedentary or moderately active lifestyles.

Condition or disease
Arthritis Osteoporosis Injuries

Detailed Description:

The intent of this research is to longitudinally study the health of individuals who have run at least one ultramarathon (50K distance or greater) prior to enrollment.Longitudinal data will be collected through periodic (every 1-2 years) survey completion by enrolled subjects over the course of up to 20 years. All surveys will be collected through a secure web-based system used by Stanford University Qualtrics). Minor formatting adjustments will be required when placing into the on-line questionnaire format.

We anticipate that the follow-up surveys will be adjusted prior to use, so they will be submitted to the Institutional Review board as addendum or in continuing review. As indicated elsewhere, subjects will be recruited through an email exchange (referred to as the "Ultralist"), various ultramarathon-related web sites and blogs, and ultramarathon-related magazines. Initial recruitment will continue for up to 12 months or until we have reached our desired sample size. Recruitment material (attached) will include a link to the initial survey. For follow-up surveys, subjects will initially be sent an email (using the address they have provided with the initial survey) that contains a link to the survey and request that they complete the survey. Attempt to contact non-responders will be, in this order, through a second email, phone call, letter to their home, email to identified surrogate, phone call to identified surrogate, and letter to identified surrogate. Publicly available death records will be examined for cases where follow-up cannot be achieved.

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Study Type : Observational [Patient Registry]
Actual Enrollment : 2452 participants
Observational Model: Cohort
Time Perspective: Prospective
Target Follow-Up Duration: 20 Years
Official Title: Ultrarunners Longitudinal TRAcking Study (ULTRA)
Study Start Date : May 2011
Actual Primary Completion Date : December 2012
Actual Study Completion Date : December 2016

Primary Outcome Measures :
  1. Compare baseline demographic and health (number of lost work days, frequency of various medical conditions, change in BMI with aging) characteristics of ultramarathon runners with published data for less active populations. [ Time Frame: Initailly at 12 months from start of enrollment and every one to two years over the next 20 years. ]
    1. Compare baseline demographic (education level, marital status, amount of TV watching) and health (number of lost work days, frequency of various medical conditions, change in BMI with aging) characteristics of ultramarathon runners with published data for less active populations.
    2. Compare characteristics of those developing various medical conditions over the course of the longitudinal study with those not developing those conditions.
    3. Compare the longitudinal risk of developing various medical conditions between ultramarathon runners and those with sedentary or moderately active lifestyles. Knowledge gained from this work will help define if there is an upper limit in activity level for which health benefits are achieved.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Adult healthy volunteers who have completed at least one ULTRA marathon (50K distance or greater) prior to enrollment in the study.

Inclusion Criteria:Healthy adults, able to provide consent, able to do survey online, must have completed one ULTRA marathon prior to participating in this study.

Exclusion Criteria:Not meeting the inclusion criteria

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02014038

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United States, California
Stanford University School of Medicine
Palo Alto, California, United States, 94304
Sponsors and Collaborators
Stanford University
University of California, Davis
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Principal Investigator: Eswar Krishnan, MD Stanford University
Principal Investigator: Martin Hoffman, MD University of California, Davis
Additional Information:

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Responsible Party: Lorinda S Chung, Assistant Professor of Medicine (Immunology and Rheumatology), Stanford University Identifier: NCT02014038    
Other Study ID Numbers: 21271
First Posted: December 17, 2013    Key Record Dates
Last Update Posted: March 19, 2021
Last Verified: March 2021
Keywords provided by Lorinda S Chung, Stanford University:
ultramarathon runners
Physical activity
Health Risks
moderately active
Additional relevant MeSH terms:
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Musculoskeletal Diseases
Bone Diseases, Metabolic
Bone Diseases
Metabolic Diseases