- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT00366990
Low Sodium Diet and Behavioral Intervention for Reversing Arterial Stiffening in Overweight Individuals (SAVE)
Clinical Trial to Reverse Early Arterial Stiffening
Studieoversigt
Status
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
CVD includes diseases that affect the heart and blood vessels. Arterial stiffness, in which arteries harden and become less flexible, increases the risk of developing CVD. Arterial stiffness increases both with age and in certain disease states, including high blood pressure, diabetes, and obesity. Young adults who are obese prematurely place themselves at risk for developing arterial stiffness and CVD. Physical activity and weight loss may reverse arterial stiffness in these individuals. Reducing sodium intake, which has been proven to decrease blood pressure, may also improve blood vessel function and arterial stiffness. The purpose of this study is to evaluate the effectiveness of a low sodium diet and a behavioral weight loss intervention in reducing arterial stiffness in young, moderately overweight individuals.
Participants will first attend a baseline study visit, at which time blood will be collected, and height, weight, waist circumference, and blood pressure will be measured. Questionnaires to assess medical history, physical activity levels, and dietary habits will be completed. An ultrasound will be used to evaluate blood vessel function and arterial stiffness. All participants will then take part in a 12-month behavioral and dietary intervention. The intervention will emphasize increasing physical activity and decreasing caloric intake by modifying lifestyle choices, physical and social environments, and attitudes toward food and exercise. Participants will be randomly assigned to follow either a low sodium diet or a normal sodium diet. During Months 1 through 4, participants will attend weekly study visits for group counseling sessions; during Months 4 through 8, study visits will occur once every two weeks; and during Months 8 through 12, they will occur once a month. At each study visit, weight, waist circumference, and blood pressure will also be measured. If necessary, individual counseling sessions will be scheduled. Participants will also document daily physical activity and caloric intake in a diary. Baseline evaluations will be repeated at Months 6, 12, and 24.
Undersøgelsestype
Tilmelding (Faktiske)
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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Pennsylvania
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Pittsburgh, Pennsylvania, Forenede Stater, 15260
- University of Pittsburgh
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Body mass index (BMI) between 25 and 35
Exclusion Criteria:
- High blood pressure currently being treated with medication
- Blood pressure greater than or equal to 140/90 mm Hg on two consecutive study visits
- Diabetes, defined as either a fasting glucose test result of .126 or current use of hypoglycemic medications
- Currently taking hyperlipidemia medication
- Currently taking vasoactive medications
- History of known atherosclerotic disease (e.g., angina, heart attack, lower extremity arterial disease)
- Underlying inflammatory condition (e.g., systemic lupus erythematosus, rheumatoid arthritis)
- Chronic infection
- Current participation in a formal exercise or weight loss program
- Pregnant or planning to become pregnant during the study
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Forebyggelse
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Ingen (Åben etiket)
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
---|---|
Aktiv komparator: weight loss and sodium intake reduction
Behavioral and weight loss intervention, including a low sodium diet.
Study goals are a 10% weight loss, 200 minutes of moderate physical activity a week, such as walking, and a 50% reduction in sodium intake.
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Group sessions once a week for 16 weeks, bi-weekly for 16 weeks, and monthly for 16 weeks on behavioral & weight loss topics with a focus on lowering sodium intake.
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Placebo komparator: weight loss and normal sodium intake
Behavioral and weight loss intervention, with regular sodium intake.
Study goals are a 10% weight loss, 200 minutes of moderate physical activity a week, such as walking.
|
Group sessions once a week for 16 weeks, bi-weekly for 16 weeks, and monthly for 16 weeks on behavioral & weight loss topics.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Tidsramme |
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Arterial stiffness
Tidsramme: Measured at Month 6
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Measured at Month 6
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Sekundære resultatmål
Resultatmål |
Tidsramme |
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Arterial stiffness and remodelling
Tidsramme: Measured at Months 6, 12 and 24
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Measured at Months 6, 12 and 24
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Endothelial function
Tidsramme: Measured at Months 6, 12, and 24
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Measured at Months 6, 12, and 24
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Samarbejdspartnere og efterforskere
Sponsor
Samarbejdspartnere
Efterforskere
- Ledende efterforsker: Emma Barinas-Mitchell, PhD, University of Pittsburgh
Publikationer og nyttige links
Generelle publikationer
- Cooper JN, Tepper P, Barinas-Mitchell E, Woodard GA, Sutton-Tyrrell K. Serum aldosterone is associated with inflammation and aortic stiffness in normotensive overweight and obese young adults. Clin Exp Hypertens. 2012;34(1):63-70. doi: 10.3109/10641963.2011.618200. Epub 2011 Oct 18.
- Cooper JN, Fried L, Tepper P, Barinas-Mitchell E, Conroy MB, Evans RW, Mori Brooks M, Woodard GA, Sutton-Tyrrell K. Changes in serum aldosterone are associated with changes in obesity-related factors in normotensive overweight and obese young adults. Hypertens Res. 2013 Oct;36(10):895-901. doi: 10.1038/hr.2013.45. Epub 2013 May 9.
- Cooper JN, Evans RW, Mori Brooks M, Fried L, Holmes C, Barinas-Mitchell E, Sutton-Tyrrell K. Associations between arterial stiffness and platelet activation in normotensive overweight and obese young adults. Clin Exp Hypertens. 2014;36(3):115-22. doi: 10.3109/10641963.2013.789045. Epub 2013 May 8.
- Cooper JN, Buchanich JM, Youk A, Brooks MM, Barinas-Mitchell E, Conroy MB, Sutton-Tyrrell K. Reductions in arterial stiffness with weight loss in overweight and obese young adults: potential mechanisms. Atherosclerosis. 2012 Aug;223(2):485-90. doi: 10.1016/j.atherosclerosis.2012.05.022. Epub 2012 May 30.
- Njoroge JN, El Khoudary SR, Fried LF, Barinas-Mitchell E, Sutton-Tyrrell K. High urinary sodium is associated with increased carotid intima-media thickness in normotensive overweight and obese adults. Am J Hypertens. 2011 Jan;24(1):70-6. doi: 10.1038/ajh.2010.113. Epub 2010 May 27.
- Lee JJ, Woodard GA, Gianaros PJ, Barinas-Mitchell E, Tepper PG, Conroy MB. Ectopic adiposity is associated with autonomic risk factors and subclinical cardiovascular disease in young adults. Obesity (Silver Spring). 2015 Oct;23(10):2030-6. doi: 10.1002/oby.21138. Epub 2015 Sep 3.
- Hughes TM, Althouse AD, Niemczyk NA, Hawkins MS, Kuipers AL, Sutton-Tyrrell K. Effects of weight loss and insulin reduction on arterial stiffness in the SAVE trial. Cardiovasc Diabetol. 2012 Sep 22;11:114. doi: 10.1186/1475-2840-11-114.
- Niemczyk NA, Catov JM, Barinas-Mitchell E, McClure CK, Roberts JM, Tepper PG, Sutton-Tyrrell K. Nulliparity is associated with less healthy markers of subclinical cardiovascular disease in young women with overweight and obesity. Obesity (Silver Spring). 2015 May;23(5):1085-91. doi: 10.1002/oby.21044. Epub 2015 Apr 10.
- Hawkins M, Gabriel KP, Cooper J, Storti KL, Sutton-Tyrrell K, Kriska A. The impact of change in physical activity on change in arterial stiffness in overweight or obese sedentary young adults. Vasc Med. 2014 Aug;19(4):257-263. doi: 10.1177/1358863X14536630. Epub 2014 May 30.
- Smith HA, Storti KL, Arena VC, Kriska AM, Gabriel KK, Sutton-Tyrrell K, Hames KC, Conroy MB. Associations between accelerometer-derived physical activity and regional adiposity in young men and women. Obesity (Silver Spring). 2013 Jun;21(6):1299-305. doi: 10.1002/oby.20308.
- Lott MP, Kriska A, Barinas-Mitchell E, Wang L, Storti K, Winger DG, Conroy MB. Impact of Lifestyle Strategies on Longer-Term Physical Activity and Weight. J Phys Act Health. 2017 Aug;14(8):606-611. doi: 10.1123/jpah.2016-0508. Epub 2017 Apr 19.
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 415
- 5R01HL077525 (U.S. NIH-bevilling/kontrakt)
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
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