Health BehaviorsPCLSNCT00959270
Pennington Center Longitudinal Study (PCLS)
An observational study of Health Behaviors and Development of Health Problems, run by Pennington Biomedical Research Center at 1 site in United States.
Trial summary
The purpose of this study is to develop a cohort of volunteers that can be studied and followed up into the future for changes in health behaviors and development of health problems. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Health Behaviors, Development of Health Problems
- How many people
- 30,000 participants
- Where
- 1 siteUnited States
- Study dates
- May 2009to Feb 2050
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: Community Sample
Who may be able to join
- 18 years or older
- volunteer to Participate
Who cannot join
- younger than 18 years
- Pregnant
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
Pennington Biomedical Research Center
Baton Rouge, Louisiana, 70809
Peter Katzmarzyk, PhD
About this study
Official title: Pennington Center Longitudinal (PCLS)
The purpose of this study is to develop a cohort of volunteers that can be studied and followed up into the future for changes in health behaviors and development of health problems.
Read the detailed description
The PCLS represents an effort to utilize the data collected over the last twenty years during the clinical research studies conducted at Pennington Biomedical Research Center. A cohort will be developed and used for cross-sectional analyses, as well as followed prospectively for the development of a variety of health-related outcomes. Several data sources from the PBRC clinical database will be used to establish the PCLS database, including screening, archive and study-specific data. The only protocol specific to the PCLS study is the collection of blood sample for risk factor determination and storage in the PBRC archive bank, only to be invoked in cases where studies do not include a blood draw as part of their protocol.
- Conditions
- Health Behaviors, Development of Health Problems
- Medical subject headings
- Health Behavior
What is being measured
The primary outcome is the main question the study is designed to answer.
Cross-sectional analyses database
The only protocol specific to the PCLS study is the collection of blood sample for risk factor determination and storage in the PBRC archive bank, only to be invoked in cases where studies do not include a blood draw as part of their protocol. The PCLS represents an effort to utilize a data collection over the last twenty years during the clinical research studies for cross-sectional analyses, as well as followed prospectively for the development of a variety of health-related outcomes.
Measured: twenty-years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Aug 2009 (estimated)
- Study startMay 2009
- Primary completionFeb 2050 (estimated)
- Study completionFeb 2050 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (23)Papers the sponsor has linked to this study.
- Other trials for Health BehaviorsStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Enrolment
- 30,000 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Pennington Biomedical Research Center
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Peter T. Katzmarzyk, Pennington Biomedical Research Center
- Investigators
- Peter Katzmarzyk, PhD, Principal investigator, Associate Executive director for Population Science
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00959270
- Sponsor's protocol ID
- PBRC 28027
- Acronym
- PCLS
- Status last verified
- Sep 2026
- First submitted
- 13 Aug 2009
- Last updated
- 24 Sep 2026
- Results posted
- No
- Data monitoring committee
- No
Publications
Camhi SM, Katzmarzyk PT. Differences in body composition between metabolically healthy obese and metabolically abnormal obese adults. Int J Obes (Lond). 2014 Aug;38(8):1142-5. doi: 10.1038/ijo.2013.208. Epub 2013 Nov 12.
PubMed 24216712Katzmarzyk PT, Greenway FL, Heymsfield SB, Bouchard C. Clinical utility and reproducibility of visceral adipose tissue measurements derived from dual-energy X-ray absorptiometry in White and African American adults. Obesity (Silver Spring). 2013 Nov;21(11):2221-4. doi: 10.1002/oby.20519. Epub 2013 Aug 13.
PubMed 23794256Katzmarzyk PT, Mire E, Bray GA, Greenway FL, Heymsfield SB, Bouchard C. Anthropometric markers of obesity and mortality in white and African American adults: the pennington center longitudinal study. Obesity (Silver Spring). 2013 May;21(5):1070-5. doi: 10.1002/oby.20151.
PubMed 23784912Katzmarzyk PT, Hu G, Cefalu WT, Mire E, Bouchard C. The importance of waist circumference and BMI for mortality risk in diabetic adults. Diabetes Care. 2013 Oct;36(10):3128-30. doi: 10.2337/dc13-0219. Epub 2013 Jun 11.
PubMed 23757429Katzmarzyk PT, Heymsfield SB, Bouchard C. Clinical utility of visceral adipose tissue for the identification of cardiometabolic risk in white and African American adults. Am J Clin Nutr. 2013 Mar;97(3):480-6. doi: 10.3945/ajcn.112.047787. Epub 2013 Jan 30.
PubMed 23364010Katzmarzyk PT, Mire E, Bouchard C. Abdominal obesity and mortality: The Pennington Center Longitudinal Study. Nutr Diabetes. 2012 Aug 27;2(8):e42. doi: 10.1038/nutd.2012.15.
PubMed 23168527Camhi SM, Katzmarzyk PT. Total and femoral neck bone mineral density and physical activity in a sample of men and women. Appl Physiol Nutr Metab. 2012 Oct;37(5):947-54. doi: 10.1139/h2012-075. Epub 2012 Jul 23.
PubMed 22823076Barreira TV, Staiano AE, Harrington DM, Heymsfield SB, Smith SR, Bouchard C, Katzmarzyk PT. Anthropometric correlates of total body fat, abdominal adiposity, and cardiovascular disease risk factors in a biracial sample of men and women. Mayo Clin Proc. 2012 May;87(5):452-60. doi: 10.1016/j.mayocp.2011.12.017.
PubMed 22560524Barreira TV, Harrington DM, Staiano AE, Heymsfield SB, Katzmarzyk PT. Body adiposity index, body mass index, and body fat in white and black adults. JAMA. 2011 Aug 24;306(8):828-30. doi: 10.1001/jama.2011.1189. No abstract available.
PubMed 21862743Katzmarzyk PT, Barreira TV, Harrington DM, Staiano AE, Heymsfield SB, Gimble JM. Relationship between abdominal fat and bone mineral density in white and African American adults. Bone. 2012 Feb;50(2):576-9. doi: 10.1016/j.bone.2011.04.012. Epub 2011 Apr 28.
PubMed 21549867Hu G, Bouchard C, Bray GA, Greenway FL, Johnson WD, Newton RL Jr, Ravussin E, Ryan DH, Katzmarzyk PT. Trunk versus extremity adiposity and cardiometabolic risk factors in white and African American adults. Diabetes Care. 2011 Jun;34(6):1415-8. doi: 10.2337/dc10-2019. Epub 2011 Apr 19.
PubMed 21505210Katzmarzyk PT, Bray GA, Greenway FL, Johnson WD, Newton RL Jr, Ravussin E, Ryan DH, Bouchard C. Ethnic-specific BMI and waist circumference thresholds. Obesity (Silver Spring). 2011 Jun;19(6):1272-8. doi: 10.1038/oby.2010.319. Epub 2011 Jan 6.
PubMed 21212770Newton RL Jr, Bouchard C, Bray G, Greenway F, Johnson WD, Ravussin E, Ryan D, Katzmarzyk PT. Abdominal adiposity depots are correlates of adverse cardiometabolic risk factors in Caucasian and African-American adults. Nutr Diabetes. 2011 Jan 31;1(1):e2. doi: 10.1038/nutd.2010.2.
PubMed 23154294Broyles ST, Bouchard C, Bray GA, Greenway FL, Johnson WD, Newton RL, Ravussin E, Ryan DH, Smith SR, Katzmarzyk PT. Consistency of fat mass--fat-free mass relationship across ethnicity and sex groups. Br J Nutr. 2011 Apr;105(8):1272-6. doi: 10.1017/S0007114510004794. Epub 2010 Dec 14.
PubMed 21156087Sullivan R, Johnson WD, Katzmarzyk PT. Waist circumference is an independent correlate of errors in self-reported BMI. Obesity (Silver Spring). 2010 Nov;18(11):2237-9. doi: 10.1038/oby.2010.178. Epub 2010 Aug 19.
PubMed 20725063
Study at a glance
From the registry record, last updated by the sponsor on 24 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Pennington Center Longitudinal (PCLS)
- ClinicalTrials.gov ID
- NCT00959270
- Acronym / sponsor ID
- PCLS / PBRC 28027
- Conditions
- Health Behaviors, Development of Health Problems
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 30,000 participants (estimated)
- Lead sponsor
- Pennington Biomedical Research CenterUniversity, hospital or other
- Study start
- May 2009 (actual)
- Primary completion
- Feb 2050 (estimated)
- Study completion
- Feb 2050 (estimated)
- First posted
- 14 Aug 2009 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to develop a cohort of volunteers that can be studied and followed up into the future for changes in health behaviors and development of health problems.
Detailed description
The PCLS represents an effort to utilize the data collected over the last twenty years during the clinical research studies conducted at Pennington Biomedical Research Center. A cohort will be developed and used for cross-sectional analyses, as well as followed prospectively for the development of a variety of health-related outcomes. Several data sources from the PBRC clinical database will be used to establish the PCLS database, including screening, archive and study-specific data. The only protocol specific to the PCLS study is the collection of blood sample for risk factor determination and storage in the PBRC archive bank, only to be invoked in cases where studies do not include a blood draw as part of their protocol.
Study design
- Observational model
- Cohort
- Time perspective
- Cross-sectional
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- Community Sample
Key inclusion criteria (2 listed)
- 18 years or older
- volunteer to Participate
Key exclusion criteria (2 listed)
- younger than 18 years
- Pregnant
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Cross-sectional analyses database
Time frame: twenty-years
The only protocol specific to the PCLS study is the collection of blood sample for risk factor determination and storage in the PBRC archive bank, only to be invoked in cases where studies do not include a blood draw as part of their protocol. The PCLS represents an effort to utilize a data collection over the last twenty years during the clinical research studies for cross-sectional analyses, as well as followed prospectively for the development of a variety of health-related outcomes.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Sep 2026.
- Results publication: PubMed 24216712Camhi SM, Katzmarzyk PT. Differences in body composition between metabolically healthy obese and metabolically abnormal obese adults. Int J Obes (Lond). 2014 Aug;38(8):1142-5. doi: 10.1038/ijo.2013.208. Epub 2013 Nov 12.
- Results publication: PubMed 23794256Katzmarzyk PT, Greenway FL, Heymsfield SB, Bouchard C. Clinical utility and reproducibility of visceral adipose tissue measurements derived from dual-energy X-ray absorptiometry in White and African American adults. Obesity (Silver Spring). 2013 Nov;21(11):2221-4. doi: 10.1002/oby.20519. Epub 2013 Aug 13.
- Results publication: PubMed 23784912Katzmarzyk PT, Mire E, Bray GA, Greenway FL, Heymsfield SB, Bouchard C. Anthropometric markers of obesity and mortality in white and African American adults: the pennington center longitudinal study. Obesity (Silver Spring). 2013 May;21(5):1070-5. doi: 10.1002/oby.20151.
- Results publication: PubMed 23757429Katzmarzyk PT, Hu G, Cefalu WT, Mire E, Bouchard C. The importance of waist circumference and BMI for mortality risk in diabetic adults. Diabetes Care. 2013 Oct;36(10):3128-30. doi: 10.2337/dc13-0219. Epub 2013 Jun 11.
- Results publication: PubMed 23364010Katzmarzyk PT, Heymsfield SB, Bouchard C. Clinical utility of visceral adipose tissue for the identification of cardiometabolic risk in white and African American adults. Am J Clin Nutr. 2013 Mar;97(3):480-6. doi: 10.3945/ajcn.112.047787. Epub 2013 Jan 30.
- Results publication: PubMed 23168527Katzmarzyk PT, Mire E, Bouchard C. Abdominal obesity and mortality: The Pennington Center Longitudinal Study. Nutr Diabetes. 2012 Aug 27;2(8):e42. doi: 10.1038/nutd.2012.15.
- Results publication: PubMed 22823076Camhi SM, Katzmarzyk PT. Total and femoral neck bone mineral density and physical activity in a sample of men and women. Appl Physiol Nutr Metab. 2012 Oct;37(5):947-54. doi: 10.1139/h2012-075. Epub 2012 Jul 23.
- Results publication: PubMed 22560524Barreira TV, Staiano AE, Harrington DM, Heymsfield SB, Smith SR, Bouchard C, Katzmarzyk PT. Anthropometric correlates of total body fat, abdominal adiposity, and cardiovascular disease risk factors in a biracial sample of men and women. Mayo Clin Proc. 2012 May;87(5):452-60. doi: 10.1016/j.mayocp.2011.12.017.
- Results publication: PubMed 21862743Barreira TV, Harrington DM, Staiano AE, Heymsfield SB, Katzmarzyk PT. Body adiposity index, body mass index, and body fat in white and black adults. JAMA. 2011 Aug 24;306(8):828-30. doi: 10.1001/jama.2011.1189. No abstract available.
- Results publication: PubMed 21549867Katzmarzyk PT, Barreira TV, Harrington DM, Staiano AE, Heymsfield SB, Gimble JM. Relationship between abdominal fat and bone mineral density in white and African American adults. Bone. 2012 Feb;50(2):576-9. doi: 10.1016/j.bone.2011.04.012. Epub 2011 Apr 28.
- Results publication: PubMed 21505210Hu G, Bouchard C, Bray GA, Greenway FL, Johnson WD, Newton RL Jr, Ravussin E, Ryan DH, Katzmarzyk PT. Trunk versus extremity adiposity and cardiometabolic risk factors in white and African American adults. Diabetes Care. 2011 Jun;34(6):1415-8. doi: 10.2337/dc10-2019. Epub 2011 Apr 19.
- Results publication: PubMed 21212770Katzmarzyk PT, Bray GA, Greenway FL, Johnson WD, Newton RL Jr, Ravussin E, Ryan DH, Bouchard C. Ethnic-specific BMI and waist circumference thresholds. Obesity (Silver Spring). 2011 Jun;19(6):1272-8. doi: 10.1038/oby.2010.319. Epub 2011 Jan 6.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Peter Katzmarzyk, PhD principal investigator
Associate Executive director for Population Science
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Health Behaviors and Development of Health Problems, run by Pennington Biomedical Research Center at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 24 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Peter Katzmarzyk, PhD (225-763-2563, doctors@pbrc.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Cross-sectional analyses database (time frame: twenty-years). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00959270, which also lists 23 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Sep 2026; AzTrials last refreshed its copy on 27 Oct 2026.