Accumulation of physical activity: blood pressure reduction between 10-min walking sessions.

Division of Sports Science, Korea Institute of Sport Science, Seoul, Korea.
Journal of Human Hypertension (Impact Factor: 2.82). 08/2008; 22(7):475-82. DOI: 10.1038/jhh.2008.29
Source: PubMed

ABSTRACT The accumulation of intermittent bouts of physical activity (PA) has been found to reduce blood pressure (BP) in prehypertension and hypertension. Yet, the BP response among several short sessions within the accumulation of PA in a single day has not been examined. The purpose of the study was (1) to investigate the BP reduction during the rest periods following three successive 10-min walking sessions accumulated over a 3-h period in prehypertensive adults and (2) to observe the role of autonomic modulation during the rest periods following each short PA session. Adults with prehypertension (131.9+/-4.7/82.5+/-6.4 mm Hg) participated in the study. BP using ambulatory monitoring and autonomic modulation through heart rate variability (HRV) using Holter monitoring were measured at baseline and during the rest periods following three short sessions (three 10-min treadmill walks at 50% of peak oxygen uptake (VO2peak); at least 50 min apart) over a 3-h period. Variables of BP and autonomic modulation were averaged for the baseline and for the rest periods following each 10-min walk. One-way analysis of variance with repeated measures was used to test the differences over time in BP and HRV (P<0.05). A significant main effect was found in systolic BP (P=0.039), whereas none was found in diastolic BP (P=0.630). Systolic BP was decreased following the third short session (-4.0+/-7.4 mm Hg) compared to baseline. No significance was found in any of the autonomic modulation variables. In conclusion, accumulating intermittent bouts of PA, as short as 10 min, total 30-min walk sessions may reduce systolic BP in prehypertension.

  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Objective Determine the relationship between physical exercise and self-perceived quality of life in hypertensive patients over 70 years of age.
    Hipertensión y Riesgo Vascular. 01/2009; 26(5).
  • [Show abstract] [Hide abstract]
    ABSTRACT: Regular physical activity is known to reduce blood pressure in 75% of individuals with hypertension and is a key component of lifestyle therapy for the prevention and management of hypertension. However, the frequency, intensity, duration, and mode of activity play a role in the magnitude and duration of blood pressure reduction. Aerobic activity is the preferred type of activity to lower blood pressure. Acute, moderate-intensity aerobic activity (40%-60% VO2max ) can decrease blood pressure by 5 to 7 mm Hg for up to 22 hours postexercise, so participation in aerobic activity is recommended on most, if not all, days of the week. The recommended duration for aerobic activity is 30 to 60 minutes of continuous or intermittent activity. Resistance activity results in a 3-mm Hg decrease in blood pressure and should supplement the aerobic activity. Low- to moderate-intensity resistance training (30%-40% of a 1—repetition maximum [1RM] for upper body exercises and 50%-60% 1RM for lower body exercises) is recommended 2 to 3 d/wk. The volume of resistance training for blood pressure reduction is 1 to 3 sets of 10 to 15 repetitions for 8 to 10 exercises that target large muscle groups (thighs, hips, back, chest, arms, and abdominals). When prescribing physical activity for the prevention or management of hypertension, it is important to know that certain populations respond differently to activity and that certain medications can inhibit physical performance.
    American Journal of Lifestyle Medicine 01/2009; 3(6):446-449.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: . Long-term physical exercise has been shown to noticeably reduce blood pressure (BP) and remarkably attenuate symptoms of hypertension. It is believed that physical exercise induces these beneficial effects by increasing the blood supply to the brain, enhancing the release of growth factors from skeletal muscles into the bloodstream, facilitating neurogenesis, stimulating angiogenesis, and influencing endothelial cell proliferation and subsequent endothelial cell membrane permeability. Previous findings also revealed that physical exercise significantly elevates brain-derived neurotrophic factor (BDNF) concentrations which appear to increase dramatically in BP-sensing neurons during hypertension. Elevating BDNF levels is the proposed mechanism by which physical exercise reduces BP and lowers hypertension risk. Relatively effective measures exist today to prevent or delay much of the burden of hypertension and curtail or remediate the devastating consequences of chronic elevated BP over time. Nevertheless, this medical problem contributes to excess risk for morbidity and mortality and is a major public health concern, especially among minority populations. To date, however, it appears as though few studies have focused on the impact of non-pharmacological, behavioral interventions such as physical exercise on BP in minorities. Therefore, the purpose of the present study was to examine the effect of long-term exercise on BP in an African American sample. Specifically, the aim was to determine whether a 12-week moderate intensity physical exercise program would significantly decrease BP. Because data provided evidence to support the hypothesis tested, it was concluded that physical exercise resulted in a significant reduction in BP in the African Americans sampled.
    International Journal of Exercise Science. 01/2014; 7(3).


Available from

Similar Publications