The effects of diet alone or in combination with exercise in patients with prehypertension and hypertension: A randomized controlled trial

Chan Joo Lee, Ji Young Kim, Eugene Shim, Sung Hyun Hong, Mi Kyung Lee, Justin Y. Jeon, Sungha Park

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


Background and Objectives: Supervised lifestyle interventions, including dietary and exercise programs, may be infeasible to implement in real-world settings. Therefore, this study aimed to evaluate the effectiveness of a home-based lifestyle modification intervention on blood pressure (BP) management. Methods: Eighty-five patients aged over 20 years and diagnosed with prehypertension or mild hypertension were randomly assigned to an advice-only comparison group (C group, n=28), a Dietary Approaches to Stop Hypertension (DASH) diet education group (D group, n=30), or a DASH and home-based exercise group (D+Ex group, n=27). The intervention lasted for 8 weeks. The primary outcome was the difference in office systolic blood pressure (SBP) before and after the study period (Trial registry at, NCT01637909). Results: Seventy-two participants (87.8%) completed the trial. The degree of change in office SBP did not significantly differ among the intervention groups; however, the D+Ex group demonstrated a tendency toward decreased SBP. Upon analysis of 24-hour ambulatory BP measurements, daytime ambulatory SBP was significantly lower in the D+Ex group (134 mmHg; 95% confidence interval [CI], 131 to 137; p=0.011) than in the C group (139.5 mmHg; 95% CI, 130.9 to 137), and daytime ambulatory SBP was significantly decreased in the D+Ex group (?5.2 mmHg; 95% CI, ?8.3 to ?2.1; p=0.011) compared to the C group (0.4 mmHg, 95% CI, ?2.5 to 3.3). Conclusions: In conclusion, lifestyle modification emphasizing both diet and exercise was effective for lowering BP and should be favored over diet-only modifications.

Original languageEnglish
Pages (from-to)637-651
Number of pages15
JournalKorean Circulation Journal
Issue number7
Publication statusPublished - 2018 Jul

Bibliographical note

Funding Information:
This work was supported by a grant from the Korean Health Technology R&D Project, Ministry of Health and Welfare, Republic of Korea (HI13C0715) and by a research grant from Sanofi-Aventis Korea Company (4-2011-0305).

Publisher Copyright:
Copyright © 2018. The Korean Society of Cardiology.

All Science Journal Classification (ASJC) codes

  • Internal Medicine
  • Cardiology and Cardiovascular Medicine


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