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1-year follow-up results for participants who completed the DASH-Sodium trial

We conducted a 12-month follow-up study on a subset of individuals in the DASH-Sodium trial to determine the long-term impact of eating the DASH diet and either 150, 100 or 50 mmol/day of sodium once the controlled feeding intervention was discontinued. The DASH-Sodium trial randomly assigned partic... Full description

Journal Title: American Journal of Hypertension May 2003, Vol.16(5), pp.A158-A159
Main Author: Ard, Jamy D
Other Authors: Coffman, Cynthia , Lin, Pao-Hwa , Vollmer, William M , Svetkey, Laura P
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0895-7061 ; E-ISSN: 1879-1905 ; DOI: 10.1016/S0895-7061(03)00500-4
Link: https://www.sciencedirect.com/science/article/pii/S0895706103005004
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recordid: elsevier_sdoi_10_1016_S0895_7061_03_00500_4
title: 1-year follow-up results for participants who completed the DASH-Sodium trial
format: Article
creator:
  • Ard, Jamy D
  • Coffman, Cynthia
  • Lin, Pao-Hwa
  • Vollmer, William M
  • Svetkey, Laura P
subjects:
  • Medicine
ispartof: American Journal of Hypertension, May 2003, Vol.16(5), pp.A158-A159
description: We conducted a 12-month follow-up study on a subset of individuals in the DASH-Sodium trial to determine the long-term impact of eating the DASH diet and either 150, 100 or 50 mmol/day of sodium once the controlled feeding intervention was discontinued. The DASH-Sodium trial randomly assigned participants to be fed the DASH or control diet for three consecutive 30-day feeding periods; participants had a different sodium intake during each feeding period. Upon completion of the trial, 56 of the 113 Duke participants entered a longitudinal observational study. Measurements (24-hour ambulatory blood pressure, weight, and 24-hour urinary electrolytes) were obtained at 1, 6 and 12 months post completion of the DASH-Sodium trial. Block food frequency questionnaires were completed at the 12-month visit. Linear mixed-effects regression models were used to analyze the effect of the diet and sodium intake during the final feeding period on longitudinal changes in blood pressure and urinary electrolytes. For both DASH and control groups, systolic and diastolic blood pressure increased after discontinuation of feeding, but remained significantly lower than the pre-trial blood pressure. Systolic and diastolic blood pressure for control participants increased more than DASH participants. One DASH subset had a decrease in blood pressure; participants with the final assignment of DASH/high sodium had an average decrease in blood pressure of 0.28/2.9 mmHg; in contrast, control/high sodium participants had an average increase in blood pressure of 7.9/2.7 mmHg. There was a significant effect of the last assigned sodium level by diet on the change in systolic pressure over time. DASH participants significantly increased their intakes of fruits/juices and vegetables, while decreasing red meat intake at the end of follow-up. Control participants had no change in DASH food group intakes. Participants who ate the DASH diet had lower blood pressure over time once the controlled feeding intervention was discontinued and were more likely to change their dietary intakes in ways that were consistent with the DASH diet. (See Table)
language: eng
source:
identifier: ISSN: 0895-7061 ; E-ISSN: 1879-1905 ; DOI: 10.1016/S0895-7061(03)00500-4
fulltext: fulltext
issn:
  • 0895-7061
  • 08957061
  • 1879-1905
  • 18791905
url: Link


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descriptionWe conducted a 12-month follow-up study on a subset of individuals in the DASH-Sodium trial to determine the long-term impact of eating the DASH diet and either 150, 100 or 50 mmol/day of sodium once the controlled feeding intervention was discontinued. The DASH-Sodium trial randomly assigned participants to be fed the DASH or control diet for three consecutive 30-day feeding periods; participants had a different sodium intake during each feeding period. Upon completion of the trial, 56 of the 113 Duke participants entered a longitudinal observational study. Measurements (24-hour ambulatory blood pressure, weight, and 24-hour urinary electrolytes) were obtained at 1, 6 and 12 months post completion of the DASH-Sodium trial. Block food frequency questionnaires were completed at the 12-month visit. Linear mixed-effects regression models were used to analyze the effect of the diet and sodium intake during the final feeding period on longitudinal changes in blood pressure and urinary electrolytes. For both DASH and control groups, systolic and diastolic blood pressure increased after discontinuation of feeding, but remained significantly lower than the pre-trial blood pressure. Systolic and diastolic blood pressure for control participants increased more than DASH participants. One DASH subset had a decrease in blood pressure; participants with the final assignment of DASH/high sodium had an average decrease in blood pressure of 0.28/2.9 mmHg; in contrast, control/high sodium participants had an average increase in blood pressure of 7.9/2.7 mmHg. There was a significant effect of the last assigned sodium level by diet on the change in systolic pressure over time. DASH participants significantly increased their intakes of fruits/juices and vegetables, while decreasing red meat intake at the end of follow-up. Control participants had no change in DASH food group intakes. Participants who ate the DASH diet had lower blood pressure over time once the controlled feeding intervention was discontinued and were more likely to change their dietary intakes in ways that were consistent with the DASH diet. (See Table)
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